Comerica (CMA) 10-K14 Feb 232022 FY Annual reportFinancial data

Company Profile

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2022	Feb. 10, 2023	Jun. 30, 2022
Document And Entity Information [Abstract]
Document Annual Report	true
Entity Incorporation, State or Country Code	DE
City Area Code	(214)
Local Phone Number	462-6831
Title of 12(b) Security	Common Stock, $5 par value
Document Type	10-K
Document Period End Date	Dec. 31, 2022
Entity File Number	1-10706
Amendment Flag	false
Entity Registrant Name	Comerica Incorporated
Entity Central Index Key	0000028412
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		131,352,922
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Public Float			$ 9,500,000,000
Document Transition Report	false
Trading Symbol	CMA
Security Exchange Name	NYSE
Entity Address, Address Line One	1717 Main Street, MC 6404
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
Entity Tax Identification Number	38-1998421
ICFR Auditor Attestation Flag	true
Auditor Name	Ernst & Young LLP
Auditor Location	Dallas, Texas
Auditor Firm ID	42

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 1,758	$ 1,236
Interest-bearing deposits with banks	4,524	21,443
Other short-term investments	157	197
Investment Securities, Available-for-sale	19,012	16,986
Commercial loans	30,909	29,366
Real estate construction loans	3,105	2,948
Commercial mortgage loans	13,306	11,255
Lease financing	760	640
International loans	1,197	1,208
Residential mortgage loans	1,814	1,771
Consumer loans	2,311	2,097
Total loans	53,402	49,285
Less allowance for loan losses	(610)	(588)
Net loans	52,792	48,697
Premises and equipment	400	454
Accrued income and other assets	6,763	5,603
Total assets	85,406	94,616
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing deposits	39,945	45,800
Money market and interest-bearing checking deposits	26,290	31,349
Savings deposits	3,225	3,167
Customer certificates of deposit	1,762	1,973
Other time deposits	124	0
Foreign office time deposits	51	50
Total interest-bearing deposits	31,452	36,539
Total deposits	71,397	82,339
Short-term borrowings	3,211	0
Accrued expenses and other liabilities	2,593	1,584
Total medium- and long-term debt	3,024	2,796
Total liabilities	80,225	86,719
Fixed rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000 liquidation preference per share: Authorized - 4,000 shares, Issued - 4,000 shares at 12/31/2022 and 12/31/2021	394	394
Common stock - $5 par value: Authorized - 325,000,000 shares; Issued - 228,164,824 shares	1,141	1,141
Capital surplus	2,220	2,175
Accumulated other comprehensive loss	(3,742)	(212)
Retained earnings	11,258	10,494
Less cost of common stock in treasury - 97,197,962 shares at 12/31/22 and 97,476,872 shares at 12/31/21	(6,090)	(6,095)
Total shareholders' equity	5,181	7,897
Total liabilities and shareholders' equity	$ 85,406	$ 94,616

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred Stock, No Par Value	$ 0	$ 0
Preferred Stock, Shares Authorized	4,000	4,000
Preferred Stock, Shares Issued	4,000	4,000
Common stock, par value	$ 5	$ 5
Common stock, authorized shares	325,000,000	325,000,000
Common stock, issued shares	228,164,824	228,164,824
Shares in treasury	97,197,962	97,476,872

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Millions		12 Months Ended
Consolidated Statements Of Income - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
INTEREST INCOME
Interest and fees on loans		$ 2,153	$ 1,594	$ 1,773
Interest on investment securities		414	280	291
Interest on short-term investments		105	27	29
Total interest income		2,672	1,901	2,093
INTEREST EXPENSE
Interest on deposits		102	22	101
Interest on short-term borrowings		17	0	1
Total interest on medium- and long-term debt	[1]	87	35	80
Total interest expense		206	57	182
Net interest income		2,466	1,844	1,911
Provision for credit losses		60	(384)	537
Net interest income after provision for credit losses		2,406	2,228	1,374
NONINTEREST INCOME
Card fees		273	298	270
Fiduciary income		233	231	209
Service charges on deposit accounts		195	195	185
Commercial lending fees		109	104	77
Derivative income		109	99	67
Bank-owned life insurance		47	43	44
Letter of credit fees		38	40	37
Brokerage fees		21	14	21
Other noninterest income		43	99	91
Total noninterest income		1,068	1,123	1,001
NONINTEREST EXPENSES
Salaries and benefits expense		1,208	1,133	1,019
Outside processing fee expense		251	266	242
Occupancy expense		175	161	156
Software expense		161	155	154
Equipment expense		50	50	49
Advertising expense		38	35	35
FDIC insurance expense		31	22	33
Other noninterest expenses		84	39	66
Total noninterest expenses		1,998	1,861	1,754
Income before income taxes		1,476	1,490	621
Provision for income taxes		325	322	124
Net Income		1,151	1,168	497
Less income allocated to participating securities		6	5	2
Preferred stock dividends		23	23	13
Net income attributable to common shares		$ 1,122	$ 1,140	$ 482
Basic earnings per common share		$ 8.56	$ 8.45	$ 3.45
Diluted earnings per common share		$ 8.47	$ 8.35	$ 3.43
Cash dividends declared on common stock		$ 356	$ 365	$ 378
Cash dividends declared per common share		$ 2.72	$ 2.72	$ 2.72

[1]Includes the effects of hedging.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 1,151	$ 1,168	$ 497
Net unrealized holding (losses) gains arising during the period	(2,903)	(406)	191
Change in net unrealized (losses) gains before income taxes	(2,903)	(406)	191
Net cash flow hedge (losses) gains arising during the period before income taxes	(1,329)	(35)	229
Net cash flow hedge (losses) gains recognized in interest and fees on loans before taxes	(25)	95	70
Change in net cash flow hedge (losses) gains before income taxes	(1,304)	(130)	159
Actuarial (loss) gain arising during the period	(415)	159	128
Prior service credit arising during the period	0	1	0
Amortization of actuarial net loss	28	40	47
Amortization of prior service credit	(23)	(25)	(27)
Change in defined benefit pension and other postretirement plans adjustment before income taxes	(410)	175	148
Total other comprehensive (loss) income before income taxes	(4,617)	(361)	498
(Benefit) provision for income taxes	(1,087)	(85)	118
Total other comprehensive income (loss), net of tax	(3,530)	(276)	380
Comprehensive (Loss) Income	$ (2,379)	$ 892	$ 877

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Nonredeemable Preferred Stock	Common Stock	Capital Surplus	Accumulated Other Comprehensive (Loss) Income	Retained Earnings	Treasury Stock
BALANCE (in shares)			142.1
BALANCE at Dec. 31, 2019	$ 7,327	$ 0	$ 1,141	$ 2,174	$ (316)	$ 9,619	$ (5,291)
Cumulative effect of change in accounting principle	13					13
Net income	497					497
Other comprehensive income (loss), net of tax	380				380
Cash dividends declared on common stock	(378)					(378)
Cash dividends declared on preferred stock	(13)					(13)
Purchase of common stock (in shares)			(3.4)
Purchase of common stock	(194)						(194)
Issuance of preferred stock	394	394
Net issuance of common stock under employee stock plans (in shares)			0.5
Net issuance of common stock under employee stock plans	0			(13)		(11)	24
Share-based compensation	24			24
BALANCE at Dec. 31, 2020	8,050	394	$ 1,141	2,185	64	9,727	(5,461)
BALANCE (in shares)			139.2
Net income	1,168					1,168
Other comprehensive income (loss), net of tax	(276)				(276)
Cash dividends declared on common stock	(365)					(365)
Cash dividends declared on preferred stock	(23)					(23)
Purchase of common stock (in shares)			(9.5)
Purchase of common stock	(723)			(24)			(699)
Issuance of preferred stock	0
Net issuance of common stock under employee stock plans (in shares)			1
Net issuance of common stock under employee stock plans	25			(27)		(13)	65
Share-based compensation	41			41
BALANCE at Dec. 31, 2021	7,897	394	$ 1,141	2,175	(212)	10,494	(6,095)
BALANCE (in shares)			130.7
Net income	1,151					1,151
Other comprehensive income (loss), net of tax	(3,530)				(3,530)
Cash dividends declared on common stock	(356)					(356)
Cash dividends declared on preferred stock	(23)					(23)
Purchase of common stock (in shares)			(0.4)
Purchase of common stock	(36)						(36)
Issuance of preferred stock	0
Net issuance of common stock under employee stock plans (in shares)			0.7
Net issuance of common stock under employee stock plans	18			(15)		(8)	41
Share-based compensation	60			60
BALANCE at Dec. 31, 2022	$ 5,181	$ 394	$ 1,141	$ 2,220	$ (3,742)	$ 11,258	$ (6,090)
BALANCE (in shares)			131

Consolidated Statements Of Ch_2

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Changes in Equity Parenthetical [Abstract]
Cash dividends declared per common share	$ 2.72	$ 2.72	$ 2.72

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES
Net income	$ 1,151	$ 1,168	$ 497
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	60	(384)	537
(Benefit) provision for deferred income taxes	(27)	79	(82)
Depreciation and amortization	92	99	108
Net periodic defined benefit credit	(91)	(81)	(55)
Share-based compensation expense	60	41	24
Net amortization of securities	30	36	15
Net gains on sales of foreclosed property	(2)	0	(1)
Net change in accrued income receivable	(152)	13	25
Net change in accrued expenses payable	131	132	(29)
Other, net	(614)	(469)	(111)
Net cash provided by operating activities	638	634	928
INVESTING ACTIVITIES
Maturities and redemptions of investment securities available-for-sale	2,511	5,536	3,350
Purchases of investment securities available-for-sale	(7,470)	(7,936)	(5,804)
Net change in loans	(4,824)	4,067	(2,136)
Proceeds from sales of foreclosed property	3	8	5
Net increase in premises and equipment	(82)	(70)	(79)
Purchases of Federal Home Loan Bank stock	(131)	0	(51)
Redemptions of Federal Home Loan Bank stock	0	115	92
Proceeds from bank-owned life insurance settlements	39	16	20
Other, net	2	(13)	1
Net cash (used in) provided by investing activities	(9,952)	1,723	(4,602)
FINANCING ACTIVITIES
Net change in deposits	(10,401)	8,438	15,554
Net change in short-term borrowings	3,211	0	(71)
Maturities and redemptions of medium- and long-term debt	0	(2,800)	(1,675)
Issuances and advances of medium- and long-term debt	500	0	0
Issuance of preferred stock	0	0	394
Cash dividends paid on preferred stock	(23)	(23)	(8)
Repurchases of common stock	(43)	(729)	(199)
Cash dividends paid on common stock	(353)	(369)	(375)
Issuances of common stock under employee stock plans	28	34	4
Other, net	(2)	4	(1)
Net cash (used in) provided by financing activities	(7,083)	4,555	13,623
Net (decrease) increase in cash and cash equivalents	(16,397)	6,912	9,949
Cash and cash equivalents at beginning of period	22,679	15,767	5,818
Cash and cash equivalents at end of period	6,282	22,679	15,767
Interest paid	130	57	203
Income taxes paid	$ 277	$ 157	$ 141

Basis of Presentation and Accou

Basis of Presentation and Accounting Policies	12 Months Ended
Basis of Presentation and Accounting Policies	Dec. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation and Accounting Policies	BASIS OF PRESENTATION AND ACCOUNTING POLICIES Organization Comerica Incorporated (the Corporation) is a registered financial holding company headquartered in Dallas, Texas. The Corporation’s major business segments are the Commercial Bank, the Retail Bank and Wealth Management. For further discussion of each business segment, refer to Note 22. The Corporation and its banking subsidiaries are regulated at both the state and federal levels. The accounting and reporting policies of the Corporation conform to United States (U.S.) generally accepted accounting principles (GAAP). The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts and disclosures. Actual results could differ from these estimates. Certain amounts in the financial statements for prior years have been reclassified to conform to the current financial statement presentation. The following summarizes the significant accounting policies of the Corporation applied in the preparation of the accompanying consolidated financial statements. Principles of Consolidation The consolidated financial statements include the accounts of the Corporation and the accounts of those subsidiaries that are majority owned and in which the Corporation has a controlling financial interest. The Corporation consolidates entities not determined to be variable interest entities (VIEs) when it holds a controlling financial interest and applies the cost or equity method when it holds less than a controlling financial interest. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies acquired are included from the date of acquisition. The Corporation holds investments in certain legal entities that are considered VIEs. In general, a VIE is an entity that either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. If any of these characteristics are present, the entity is subject to a variable interests consolidation model, and consolidation is based on variable interests, not on voting interests. Variable interests are defined as contractual ownership or other economic interests in an entity that change with fluctuations in the entity’s net asset value. The primary beneficiary, which is required to consolidate the VIE, is defined as the party that has both the power to direct the activities of the VIE that most significantly impact the entity’s economic performance and the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. The maximum potential exposure to losses relative to investments in VIEs is generally limited to the sum of the outstanding book basis and unfunded commitments for future investments. The Corporation evaluates its investments in VIEs, both at inception and when there is a change in circumstances that requires reconsideration, to determine if the Corporation is the primary beneficiary and consolidation is required. The Corporation accounts for unconsolidated VIEs using either the proportional, cost or equity method. These investments comprise investments in community development projects which generate tax credits to their investors and are included in accrued income and other assets on the Consolidated Balance Sheets. The proportional method is used for investments in affordable housing projects that qualify for the low-income housing tax credit (LIHTC). The equity method is used for other investments where the Corporation has the ability to exercise significant influence over the entity’s operation and financial policies. Other unconsolidated equity investments that do not meet the criteria to be accounted for under the equity method are accounted for under the cost method. Amortization and other write-downs of LIHTC investments are presented on a net basis as a component of the provision for income taxes, while income, amortization and write-downs from cost and equity method investments are recorded in other noninterest income on the Consolidated Statements of Income. Assets held in an agency or fiduciary capacity are not assets of the Corporation and are not included in the consolidated financial statements. See Note 9 for additional information about the Corporation’s involvement with VIEs. Fair Value Measurements The Corporation utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, the Corporation uses present value techniques and other valuation methods to estimate the fair values of its financial instruments. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used. Fair value is an estimate of the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction (i.e., not a forced transaction, such as a liquidation or distressed sale) between market participants at the measurement date. Fair value is based on the assumptions market participants would use when pricing an asset or liability. Investment securities available-for-sale, derivatives, deferred compensation plans and equity securities with readily determinable fair values (primarily money market mutual funds) are recorded at fair value on a recurring basis. Additionally, from time to time, the Corporation may be required to record other assets and liabilities at fair value on a nonrecurring basis, such as impaired loans, other real estate (primarily foreclosed property), nonmarketable equity securities and certain other assets and liabilities. These nonrecurring fair value adjustments typically involve write-downs of individual assets or application of lower of cost or fair value accounting. Fair value measurements and disclosures guidance establishes a three-level fair value hierarchy based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. Fair value measurements are separately disclosed by level within the fair value hierarchy. For assets and liabilities recorded at fair value, it is the Corporation’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. Level 1 Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are less active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. The Corporation generally utilizes third-party pricing services to value Level 1 and Level 2 securities. Management reviews the methodologies and assumptions used by the third-party pricing services and evaluates the values provided, principally by comparison with other available market quotes for similar instruments and/or analysis based on internal models using available third-party market data. The Corporation may occasionally adjust certain values provided by the third-party pricing service when management believes, as the result of its review, that the adjusted price most appropriately reflects the fair value of the particular security. Fair value measurements for assets and liabilities where limited or no observable market data exists are based primarily upon estimates, often calculated based on the economic and competitive environment, the characteristics of the asset or liability and other factors. Therefore, the results cannot be determined with precision and may not be realized in an actual sale or immediate settlement of the asset or liability. Additionally, there may be inherent weaknesses in any calculation technique so that changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results of current or future values. Following are descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities recorded at fair value, as well as a description of the methods and significant assumptions used to estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring basis. The descriptions include an indication of the level of the fair value hierarchy in which the assets or liabilities are classified. Cash and due from banks, federal funds sold and interest-bearing deposits with banks Due to their short-term nature, the carrying amount of these instruments approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of these instruments as Level 1. Deferred compensation plan assets and liabilities as well as equity securities with a readily determinable fair value The Corporation holds a portfolio of securities that includes equity securities and assets held related to deferred compensation plans. Securities and associated deferred compensation plan liabilities are recorded at fair value on a recurring basis and included in other short-term investments and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets. Level 1 securities include assets related to deferred compensation plans, which are invested in mutual funds, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and other securities traded on an active exchange, such as the New York Stock Exchange. Level 2 securities include municipal bonds and mortgage-backed securities issued by U.S. government-sponsored entities and corporate debt securities. Deferred compensation plan liabilities represent the fair value of the obligation to the plan participant, which corresponds to the fair value of the invested assets. The methods used to value equity securities and deferred compensation plan assets are the same as the methods used to value investment securities, discussed below. Investment securities Investment securities available-for-sale are recorded at fair value on a recurring basis. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored entities, as well as corporate debt securities. The fair value of Level 2 securities is determined using quoted prices of securities with similar characteristics, or pricing models based on observable market data inputs, primarily interest rates, spreads and prepayment information. Securities classified as Level 3 represent securities in less liquid markets requiring significant management assumptions when determining fair value. Loans held-for-sale Loans held-for-sale, included in other short-term investments on the Consolidated Balance Sheets, are recorded at the lower of cost or fair value. Loans held-for-sale may be carried at fair value on a nonrecurring basis when fair value is less than cost. The fair value is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, the Corporation classifies both loans held-for-sale subjected to nonrecurring fair value adjustments and the estimated fair value of loans held-for sale as Level 2. Loans The Corporation does not record loans at fair value on a recurring basis. However, an individual allowance may be established for a loan that no longer shares risk characteristics with loan pools, typically collateral-dependent loans for which reserves are based on the fair value of the underlying collateral. Such loan values are reported as nonrecurring fair value measurements. Collateral values supporting individually evaluated loans are evaluated quarterly. When management determines that the fair value of the collateral requires additional adjustments, either as a result of non-current appraisal value or when there is no observable market price, the Corporation classifies the loan as Level 3. The Corporation discloses fair value estimates for loans. The estimated fair value is determined based on characteristics such as loan category, repricing features and remaining maturity, and includes prepayment and credit loss estimates. Fair values are estimated using a discounted cash flow model that employs discount rates reflecting current pricing for loans with similar maturity and risk characteristics, including credit characteristics, and the cost of equity for the portfolio at the balance sheet date. The rates take into account the expected yield curve, as well as an adjustment for prepayment risk, when applicable. The Corporation classifies the estimated fair value of loans held for investment as Level 3. Customers’ liability on acceptances outstanding and acceptances outstanding Customers' liability on acceptances outstanding is included in accrued income and other assets and acceptances outstanding are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Due to their short-term nature, the carrying amount of these instruments approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of these instruments as Level 1. Derivative assets and derivative liabilities Derivative instruments held or issued for risk management or customer-initiated activities are traded in over-the-counter markets where quoted market prices are not readily available. Fair value for over-the-counter derivative instruments is measured on a recurring basis using internally developed models primarily based on market observable inputs, such as yield curves and option volatilities. The Corporation manages credit risk on its derivative positions based on whether the derivatives are settled through a clearinghouse or bilaterally with each counterparty. For derivative positions settled on a counterparty-by-counterparty basis, the Corporation calculates credit valuation adjustments, included in the fair value of these instruments, on the basis of its relationships at the counterparty portfolio or master netting agreement level. These credit valuation adjustments are determined by applying a credit spread for the counterparty or the Corporation, as appropriate, to the total expected exposure of the derivative after considering collateral and other master netting arrangements. These adjustments, which are considered Level 3 inputs, are based on estimates of current credit spreads to evaluate the likelihood of default. When credit valuation adjustments are significant to the overall fair value of a derivative, the Corporation classifies the over-the-counter derivative valuation in Level 3 of the fair value hierarchy; otherwise, over-the-counter derivative valuations are classified in Level 2. Nonmarketable equity securities The Corporation has a portfolio of indirect (through funds) private equity and venture capital investments, included in accrued income and other assets on the Consolidated Balance Sheets. The investments are accounted for either on the cost or equity method and are individually reviewed for impairment on a quarterly basis by comparing the carrying value to the estimated fair value. These investments may be carried at fair value on a nonrecurring basis when they are deemed to be impaired and written down to fair value. Where there is not a readily determinable fair value, the Corporation estimates fair value for indirect private equity and venture capital investments based on the net asset value, as reported by the fund. The Corporation also holds restricted equity investments, primarily Federal Reserve Bank (FRB) and Federal Home Loan Bank (FHLB) stock. Restricted equity securities are not readily marketable and are recorded at cost (par value) in accrued income and other assets on the Consolidated Balance Sheets and evaluated for impairment based on the ultimate recoverability of the par value. No significant observable market data for these instruments is available. The Corporation considers the profitability and asset quality of the issuer, dividend payment history and recent redemption experience and believes its investments in FRB and FHLB stock are ultimately recoverable at par. Therefore, the carrying amount for these restricted equity investments approximates fair value. The Corporation classifies the estimated fair value of such investments as Level 1. The Corporation’s investment in FHLB stock totaled $138 million and $7 million at December 31, 2022 and 2021, and its investment in FRB stock totaled $85 million at both December 31, 2022 and 2021. Other real estate Other real estate is included in accrued income and other assets on the Consolidated Balance Sheets and includes primarily foreclosed property. Foreclosed property is initially recorded at fair value, less costs to sell, at the date of legal title transfer to the Corporation, establishing a new cost basis. Subsequently, foreclosed property is carried at the lower of cost or fair value, less costs to sell. Other real estate may be carried at fair value on a nonrecurring basis when fair value is less than cost. Fair value is based upon independent market prices, appraised value or management's estimate of the value of the property. When management determines that the fair value of other real estate requires additional adjustments, either as a result of a non-current appraisal or when there is no observable market price, the Corporation classifies the other real estate as Level 3. Deposit liabilities The estimated fair value of checking, savings and certain money market deposit accounts is represented by the amounts payable on demand. The estimated fair value of term deposits is calculated by discounting the scheduled cash flows using the period-end rates offered on these instruments. As such, the Corporation classifies the estimated fair value of deposit liabilities as Level 2. Short-term borrowings The carrying amount of federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of short-term borrowings as Level 1. Medium- and long-term debt The estimated fair value of the Corporation's medium- and long-term debt is based on quoted market values when available. If quoted market values are not available, the estimated fair value is based on the market values of debt with similar characteristics. The Corporation classifies the estimated fair value of medium- and long-term debt as Level 2. Credit-related financial instruments Credit-related financial instruments include unused commitments to extend credit and letters of credit. These instruments generate ongoing fees which are recognized over the term of the commitment. The carrying value of the deferred fees, which approximates fair value of these instruments, is included in accrued expenses and other liabilities on the Consolidated Balance Sheets. The Corporation classifies the estimated fair value of credit-related financial instruments as Level 3. For further information about fair value measurements refer to Note 2. Other Short-Term Investments Other short-term investments include deferred compensation plan assets, certificates of deposits, equity securities with a readily determinable fair value and loans held-for-sale. Deferred compensation plan assets and equity securities are carried at fair value. Realized and unrealized gains or losses are included in other noninterest income on the Consolidated Statements of Income. Loans held-for-sale, typically residential mortgages originated with the intent to sell and occasionally including other loans transferred to held-for-sale, are carried at the lower of cost or fair value. Fair value is determined in the aggregate for each portfolio. Changes in fair value and gains or losses upon sale are included in other noninterest income on the Consolidated Statements of Income. Investment Securities Debt securities are classified as trading, available-for-sale (AFS) or held-to-maturity. Trading securities are recorded at fair value, with unrealized gains and losses included in noninterest income on the Consolidated Statements of Income. AFS securities are recorded at fair value, with unrealized gains and losses, net of income taxes, reported as a separate component of other comprehensive income (OCI). Securities for which management has the intent and ability to hold to maturity are classified as held-to-maturity and recorded at amortized cost. Interest income is recognized using the interest method. All of the Corporation's investment securities are classified as AFS at December 31, 2022 and 2021. An AFS security is impaired if its fair value is less than amortized cost. Credit-related impairment is recognized as an allowance to investment securities available-for-sale on the Consolidated Balance Sheets with a corresponding adjustment to provision for credit losses on the Consolidated Statements of Income. Non-credit-related impairment is recognized as a component of OCI. If the Corporation intends to sell an impaired AFS security or more likely than not will be required to sell that security before recovering its amortized cost basis, the entire impairment amount is recognized in earnings with corresponding adjustment to the security's amortized cost basis. For certain types of AFS securities, such as U.S. Treasuries and other securities with government guarantees, the Corporation generally expects zero credit losses. The zero-loss expectation applies to all the Corporation’s securities and no allowance for credit losses was recorded on its AFS securities portfolio at December 31, 2022. Gains or losses on the sale of securities are computed based on the adjusted cost of the specific security sold. For further information on investment securities, refer to Note 3. Loans Loans and leases originated and held for investment are recorded at the principal balance outstanding, net of unearned income, charge-offs and unamortized deferred fees and costs. Interest income is recognized on loans and leases using the interest method. The Corporation assesses all loan modifications to determine whether a restructuring constitutes a troubled debt restructuring (TDR). A restructuring is considered a TDR when a borrower is experiencing financial difficulty and the Corporation grants a concession to the borrower. TDRs on accrual status at the original contractual rate of interest are considered performing. Nonperforming TDRs include TDRs on nonaccrual status and loans which have been renegotiated to less than the original contractual rates (reduced-rate loans). Certain types of modifications related to COVID-19 that were granted during 2020 and 2021 were excluded from TDR accounting. See Note 1 in the 2021 10-K for additional information. Effective January 1, 2020, the Corporation adopted Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2020-04 "Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting," (ASU 2020-04). Typically, entities must evaluate whether a loan contract modification results in a modified loan or a new loan for accounting purposes. Topic 848 allows entities to bypass this evaluation for qualifying modifications related to reference rate reform. The Corporation will apply the relief provided by Topic 848 to qualifying contract modifications. The FASB included a sunset provision within Topic 848 of December 31, 2022, based on the United Kingdom’s Financial Conduct Authority (FCA) announcement that it would no longer need to persuade or compel banks to submit to LIBOR after December 31, 2021. In March 2021, the FCA extended the intended cessation date of most tenors of LIBOR in the United States to June 30, 2023. In response, the FASB issued ASU 2022-06 “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848,” (ASU 2022-06) in December 2022, which defers the expiration date of ASC Topic 848 to December 31, 2024. The Corporation adopted ASU 2022-06 immediately upon issuance. Loan Origination Fees and Costs Substantially all loan origination fees and costs are deferred and amortized to net interest income over the life of the related loan or over the commitment period as a yield adjustment. Net deferred income on originated loans, including unearned income and unamortized costs, fees, premiums and discounts, totaled $118 million and $102 million at December 31, 2022 and 2021, respectively. Loan fees on unused commitments and net origination fees related to loans sold are recognized in noninterest income. Allowance for Credit Losses The allowance for credit losses includes both the allowance for loan losses and the allowance for credit losses on lending-related commitments. The Corporation disaggregates the loan portfolio into segments for purposes of determining the allowance for credit losses. These segments are based on the level at which the Corporation develops, documents and applies a systematic methodology to determine the allowance for credit losses. The Corporation's portfolio segments are business loans and retail loans. Business loans include the commercial, real estate construction, commercial mortgage, lease financing and international loan portfolios. Retail loans consist of residential mortgage and consumer loans, including home equity loans. Current expected credit losses are estimated over the contractual life of the loan portfolio, considering all available relevant information, including historical and current conditions as well as reasonable and supportable forecasts of future events. Allowance for Loan Losses The allowance for loan losses is estimated on a quarterly basis and represents management’s estimates of current expected credit losses in the Corporation’s loan portfolio. Pools of loans with similar risk characteristics are collectively evaluated while loans that no longer share risk characteristics with loan pools are evaluated individually. Collective loss estimates are determined by applying loss factors, designed to estimate current expected credit losses, to amortized cost balances over the remaining contractual life of the collectively evaluated portfolio. Loans with similar risk characteristics are aggregated into homogeneous pools. Business loans are assigned to pools based primarily on business line and the Corporation’s internal risk rating system. For retail loans, pools are based on loan type, past due status and credit scores. Loss factors are based on estimated probability of default for each pool, set to a default horizon based on contractual life, and loss given default. Historical estimates are calibrated to economic forecasts over the reasonable and supportable forecast period based on the projected performance of specific economic variables that statistically correlate with each of the probability of default and loss given default pools. At least annually, management considers different models when estimating credit losses, selecting ones that most reasonably forecast credit losses in the relevant economic environment. The calculation of current expected credit losses is inherently subjective, as it requires management to exercise judgment in determining appropriate factors used to determine the allowance. Some of the most significant factors in the quantitative allowance estimate are assigning internal risk ratings to loans, selecting the economic forecasts used to calibrate the reserve factors and determining the reasonable and supportable forecast period. • Internal Risk Ratings : Loss factors are dependent on loan risk ratings for business loans. Risk ratings are assigned at origination, based on inherent credit risk, and updated based on new information that becomes available, periodic reviews of credit quality, a change in borrower performance or modifications to lending agreements. • Economic Forecasts: Management selects economic variables it believes to be most relevant based on the composition of the loan portfolio and customer base, including forecasted levels of employment, gross domestic product, corporate bond and treasury spreads, industrial production levels, consumer and commercial real estate price indices as well as housing statistics. Different economic forecast scenarios ranging from more benign to more severe are evaluated each reporting period to forecast losses over the contractual life of the loan portfolio. • Forecast Period : Economic forecasts are applied over the period management believes it can estimate reasonable and supportable forecasts. Forecast periods may be adjusted in response to changes in the economic environment. To estimate losses for contractual periods that extend beyond the forecast horizon, the Corporation reverts to an average historical loss experience. The Corporation typically forecasts economic variables over a two-year horizon, followed by an immediate reversion to an average historical loss experience that generally incorporates a full economic cycle. Management reviews this methodology on at least an annual basis. The allowance for loan losses also includes qualitative adjustments to bring the allowance to the level management believes is appropriate based on factors that have not otherwise been fully accounted for, including adjustments for foresight risk, input imprecision and model imprecision. Foresight risk reflects the inherent imprecision in forecasting economic variables, including determining the depth and duration of economic cycles and their impact to relevant economic variables. The Corporation may make qualitative adjustments based on its evaluation of different forecast scenarios and known recent events impacting relevant economic variables. Input imprecision factors address the risk that certain model inputs may not reflect all available information including (i) risk factors that have not been fully addressed in internal risk ratings, (ii) changes in lending policies and procedures, (iii) changes in the level and quality of experience held by lending management, (iv) imprecision in the risk rating system and (v) limitations in data available for certain loan portfolios. Model imprecision considers known model limitations and model updates not yet fully reflected in the quantitative estimate. The determination of the appropriate qualitative adjustment is based on management's analysis of current and expected economic conditions and their impact to the portfolio, as well as internal credit risk movements and a qualitative assessment of the lending environment, including underwriting standards. Management recognizes the sensitivity of various assumptions made in the quantitative modeling of expected losses and may adjust reserves depending upon the level of uncertainty that currently exists in one or more assumptions. Credit losses for loans that no longer share risk characteristics with the loan pools are estimated on an individual basis. Individual credit loss estimates are typically performed for nonaccrual loans and modified loans classified as TDRs and are based on one of several methods, including the estimated fair value of the underlying collateral, observable market value of similar debt or the present value of expected cash flows. The Corporation considers certain loans to b

Fair Value Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTSNote 1 contains information about the fair value hierarchy, descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities recorded at fair value, as well as a description of the methods and significant assumptions used to estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring basis. Assets and Liabilities Recorded at Fair Value on a Recurring Basis The following tables present the recorded amount of assets and liabilities measured at fair value on a recurring basis as of December 31, 2022 and 2021. (in millions) Total Level 1 Level 2 Level 3 December 31, 2022 Deferred compensation plan assets $ 92 $ 92 $ — $ — Equity securities 44 44 — — Investment securities available-for-sale: U.S. Treasury securities 2,664 2,664 — — Residential mortgage-backed securities (a) 11,655 — 11,655 — Commercial mortgage-backed securities (a) 4,693 — 4,693 — Total investment securities available-for-sale 19,012 2,664 16,348 — Derivative assets: Interest rate contracts 206 — 206 — Energy contracts 1,020 — 1,020 — Foreign exchange contracts 53 — 53 — Total derivative assets 1,279 — 1,279 — Total assets at fair value $ 20,427 $ 2,800 $ 17,627 $ — Derivative liabilities: Interest rate contracts $ 644 $ — $ 644 $ — Energy contracts 1,006 — 1,006 — Foreign exchange contracts 45 — 45 — Other financial derivative 12 — — 12 Total derivative liabilities 1,707 — 1,695 12 Deferred compensation plan liabilities 92 92 — — Total liabilities at fair value $ 1,799 $ 92 $ 1,695 $ 12 December 31, 2021 Deferred compensation plan assets $ 113 $ 113 $ — $ — Equity securities 62 62 — — Investment securities available-for-sale: U.S. Treasury securities 2,993 2,993 — — Residential mortgage-backed securities (a) 13,288 — 13,288 — Commercial mortgage-backed securities (a) 705 — 705 — Total investment securities available-for-sale 16,986 2,993 13,993 — Derivative assets: Interest rate contracts 239 — 213 26 Energy contracts 670 — 670 — Foreign exchange contracts 19 — 19 — Total derivative assets 928 — 902 26 Total assets at fair value $ 18,089 $ 3,168 $ 14,895 $ 26 Derivative liabilities: Interest rate contracts $ 69 $ — $ 69 $ — Energy contracts 662 — 662 — Foreign exchange contracts 16 — 16 — Other financial derivative 13 — — 13 Total derivative liabilities 760 — 747 13 Deferred compensation plan liabilities 113 113 — — Total liabilities at fair value $ 873 $ 113 $ 747 $ 13 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises. There were no transfers of assets or liabilities recorded at fair value on a recurring basis into or out of Level 3 fair value measurements during the years ended December 31, 2022 and 2021. The following table summarizes the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2022 and 2021. Net Realized/Unrealized Gains (Losses) (Pretax) Recorded in Earnings (a) Balance at Beginning of Period Settlements Balance at End of Period (in millions) Realized Unrealized Year Ended December 31, 2022 Derivative assets: Interest rate contracts $ 26 $ — $ — $ (26) $ — Derivative liabilities: Other financial derivative (13) — 1 — (12) Year Ended December 31, 2021 Derivative assets: Interest rate contracts $ 39 — $ (13) — $ 26 Derivative liabilities: Other financial derivative (11) — (2) — (13) (a) Realized and unrealized gains and losses due to changes in fair value recorded in other noninterest income on the Consolidated Statements of Income. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis The Corporation may be required to record certain assets and liabilities at fair value on a nonrecurring basis. These include assets that are recorded at the lower of cost or fair value, and were recognized at fair value since it was less than cost at the end of the period. The following table presents assets recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021. No liabilities were recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021. (in millions) Level 3 December 31, 2022 Loans: Commercial $ 53 Real estate construction 2 Commercial mortgage 11 Total loans $ 66 Other real estate 9 Total assets at fair value $ 75 December 31, 2021 Loans: Commercial $ 125 Real estate construction 4 Commercial mortgage 17 International 4 Total assets at fair value $ 150 Level 3 assets recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021 included both nonaccrual loans and TDRs for which a specific allowance was established based on the fair value of collateral as well as bank property held for sale. The unobservable inputs were the additional adjustments applied by management to the appraised values to reflect such factors as non-current appraisals and revisions to estimated time to sell. These adjustments are determined based on qualitative judgments made by management on a case-by-case basis and are not observable inputs, although they are used in the determination of fair value. Estimated Fair Values of Financial Instruments Not Recorded at Fair Value on a Recurring Basis The Corporation typically holds the majority of its financial instruments until maturity and thus does not expect to realize many of the estimated fair value amounts disclosed. The disclosures also do not include estimated fair value amounts for items that are not defined as financial instruments, but which have significant value. These include such items as the future earnings potential of significant customer relationships and the value of trust operations and other fee generating businesses. The Corporation believes the imprecision of an estimate could be significant. The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a recurring basis on the Corporation’s Consolidated Balance Sheets are as follows: Carrying Estimated Fair Value (in millions) Total Level 1 Level 2 Level 3 December 31, 2022 Assets Cash and due from banks $ 1,758 $ 1,758 $ 1,758 $ — $ — Interest-bearing deposits with banks 4,524 4,524 4,524 — — Other short-term investments 19 19 19 — — Loans held-for-sale 2 2 — 2 — Total loans, net of allowance for loan losses (a) 52,792 50,964 — — 50,964 Customers’ liability on acceptances outstanding 3 3 3 — — Restricted equity investments 223 223 223 — — Nonmarketable equity securities (b) 5 12 Liabilities Demand deposits (noninterest-bearing) 39,945 39,945 — 39,945 — Interest-bearing deposits 29,566 29,566 — 29,566 — Customer certificates of deposit 1,762 1,719 — 1,719 — Other time deposits 124 124 — 124 — Total deposits 71,397 71,354 — 71,354 — Short-term borrowings 3,211 3,211 3,211 — — Acceptances outstanding 3 3 3 — — Medium- and long-term debt 3,024 3,071 — 3,071 — Credit-related financial instruments (79) (79) — — (79) December 31, 2021 Assets Cash and due from banks $ 1,236 $ 1,236 $ 1,236 $ — $ — Interest-bearing deposits with banks 21,443 21,443 21,443 — — Other short-term investments 16 16 16 — — Loans held-for-sale 6 6 — 6 — Total loans, net of allowance for loan losses (a) 48,697 49,127 — — 49,127 Customers’ liability on acceptances outstanding 5 5 5 — — Restricted equity investments 92 92 92 — — Nonmarketable equity securities (b) 5 10 Liabilities Demand deposits (noninterest-bearing) 45,800 45,800 — 45,800 — Interest-bearing deposits 34,566 34,566 — 34,566 — Customer certificates of deposit 1,973 1,968 — 1,968 — Total deposits 82,339 82,334 — 82,334 — Acceptances outstanding 5 5 5 — — Medium- and long-term debt 2,796 2,854 — 2,854 — Credit-related financial instruments (59) (59) — — (59) (a) Included $66 million and $150 million of loans recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021, respectively. (b) Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.

Investment Securities

Investment Securities	12 Months Ended
Investment Securities	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES A summary of the Corporation’s investment securities follows: (in millions) Amortized Gross Gross Fair Value December 31, 2022 Investment securities available-for-sale: U.S. Treasury securities $ 2,810 $ — $ 146 $ 2,664 Residential mortgage-backed securities (a) 13,983 — 2,328 11,655 Commercial mortgage-backed securities (a) 5,252 — 559 4,693 Total investment securities available-for-sale $ 22,045 $ — $ 3,033 $ 19,012 December 31, 2021 Investment securities available-for-sale: U.S. Treasury securities $ 3,010 $ 22 $ 39 $ 2,993 Residential mortgage-backed securities (a) 13,397 67 176 13,288 Commercial mortgage-backed securities (a) 709 2 6 705 Total investment securities available-for-sale $ 17,116 $ 91 $ 221 $ 16,986 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises. A summary of the Corporation’s investment securities in an unrealized loss position as of December 31, 2022 and 2021 follows: Less than 12 Months 12 Months or more Total (in millions) Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2022 U.S. Treasury securities $ 996 $ 5 $ 1,668 $ 141 $ 2,664 $ 146 Residential mortgage-backed securities (a) 3,500 361 8,153 1,967 11,653 2,328 Commercial mortgage-backed securities (a) 4,008 405 685 154 4,693 559 Total temporarily impaired securities $ 8,504 $ 771 $ 10,506 $ 2,262 $ 19,010 $ 3,033 December 31, 2021 U.S. Treasury securities $ 465 $ 6 $ 1,334 $ 33 $ 1,799 $ 39 Residential mortgage-backed securities (a) 7,197 128 1,128 48 8,325 176 Commercial mortgage-backed securities (a) 346 6 — — 346 6 Total temporarily impaired securities $ 8,008 $ 140 $ 2,462 $ 81 $ 10,470 $ 221 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises. Unrealized losses on investment securities resulted from changes in market interest rates. The Corporation’s portfolio is comprised of securities issued or guaranteed by the U.S. government or government-sponsored enterprises. As such, it is expected that the securities would not be settled at a price less than the amortized cost of the investments. Further, the Corporation does not intend to sell the investments, and it is not more-likely-than-not that it will be required to sell the the investments before recovery of amortized costs. At December 31, 2022, the Corporation had 1,289 securities in an unrealized loss position with no allowance for credit losses, comprised of 27 U.S. Treasury securities, 1,008 residential mortgage-backed securities and 254 commercial mortgage-backed securities. Interest receivable on investment securities totaled $49 million and $36 million at December 31, 2022 and 2021 and was included in accrued income and other assets on the Consolidated Balance Sheets. Sales, calls and write-downs of investment securities available-for-sale, computed based on the adjusted cost of the specific security, resulted in no gains or losses during the years ended December 31, 2022 and 2021. During the year ended December 31, 2020, a $1 million gain was offset by a $1 million loss, recorded in noninterest income. The following table summarizes the amortized cost and fair values of investment securities by contractual maturity. Securities with multiple maturity dates are classified in the period of final maturity. The actual cash flows of mortgage-backed securities may differ as borrowers of the underlying loans may exercise prepayment options. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. (in millions) December 31, 2022 Amortized Cost Fair Value Contractual maturity Within one year $ 1,103 $ 1,093 After one year through five years 1,943 1,797 After five years through ten years 5,518 4,946 After ten years 13,481 11,176 Total investment securities $ 22,045 $ 19,012 At December 31, 2022, investment securities with a carrying value of $3.2 billion were pledged where permitted or required by law, including $1.0 billion pledged to the Federal Home Loan Bank (FHLB) as collateral for potential future borrowings and $2.2 billion to secure $1.0 billion of liabilities, primarily public and other deposits of state and local government agencies as well as derivative instruments. For information on FHLB borrowings, refer to Note 12.

Credit Quality And Allowance Fo

Credit Quality And Allowance For Credit Losses	12 Months Ended
Credit Quality And Allowance For Credit Losses	Dec. 31, 2022
Credit Quality And Allowance For Credit Losses [Abstract]
Credit Quality And Allowance For Credit Losses	CREDIT QUALITY AND ALLOWANCE FOR CREDIT LOSSES The following table presents an aging analysis of the amortized cost basis of loans. Loans Past Due and Still Accruing (in millions) 30-59 60-89 90 Days Total Nonaccrual Current Total December 31, 2022 Business loans: Commercial $ 238 $ 13 $ 20 $ 271 $ 142 $ 30,496 $ 30,909 Real estate construction: Commercial Real Estate business line (b) — — — — — 2,505 2,505 Other business lines (c) 2 — — 2 3 595 600 Total real estate construction 2 — — 2 3 3,100 3,105 Commercial mortgage: Commercial Real Estate business line (b) — 6 — 6 1 4,674 4,681 Other business lines (c) 64 5 3 72 22 8,531 8,625 Total commercial mortgage 64 11 3 78 23 13,205 13,306 Lease financing 6 — — 6 — 754 760 International — 9 — 9 3 1,185 1,197 Total business loans 310 33 23 366 171 48,740 49,277 Retail loans: Residential mortgage 22 — — 22 53 1,739 1,814 Consumer: Home equity 4 3 — 7 15 1,754 1,776 Other consumer 5 1 — 6 1 528 535 Total consumer 9 4 — 13 16 2,282 2,311 Total retail loans 31 4 — 35 69 4,021 4,125 Total loans $ 341 $ 37 $ 23 $ 401 $ 240 $ 52,761 $ 53,402 December 31, 2021 Business loans: Commercial $ 35 $ 18 $ 6 $ 59 $ 173 $ 29,134 $ 29,366 Real estate construction: Commercial Real Estate business line (b) — — — — — 2,391 2,391 Other business lines (c) 15 1 — 16 6 535 557 Total real estate construction 15 1 — 16 6 2,926 2,948 Commercial mortgage: Commercial Real Estate business line (b) — — — — 1 3,337 3,338 Other business lines (c) 18 4 16 38 31 7,848 7,917 Total commercial mortgage 18 4 16 38 32 11,185 11,255 Lease financing 5 — — 5 — 635 640 International 5 8 1 14 5 1,189 1,208 Total business loans 78 31 23 132 216 45,069 45,417 Retail loans: Residential mortgage 4 — — 4 36 1,731 1,771 Consumer: Home equity 4 3 — 7 12 1,514 1,533 Other consumer 32 1 4 37 — 527 564 Total consumer 36 4 4 44 12 2,041 2,097 Total retail loans 40 4 4 48 48 3,772 3,868 Total loans $ 118 $ 35 $ 27 $ 180 $ 264 $ 48,841 $ 49,285 (a) Includes $22 million of loans with deferred payments not considered past due in accordance with the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) at December 31, 2021. (b) Primarily loans to real estate developers. (c) Primarily loans secured by owner-occupied real estate. The following table presents loans by credit quality indicator (CQI) and vintage year. CQI is based on internal risk ratings assigned to each business loan at the time of approval and subjected to subsequent reviews, generally at least annually, and to pools of retail loans with similar risk characteristics. Vintage year is the year of origination or major modification. December 31, 2022 Vintage Year (in millions) 2022 2021 2020 2019 2018 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 3,946 (b) $ 3,509 (b) $ 917 (b) $ 1,041 $ 598 $ 1,030 $ 18,604 $ 9 $ 29,654 Criticized (c) 75 274 81 69 45 78 632 1 1,255 Total commercial 4,021 3,783 998 1,110 643 1,108 19,236 10 30,909 Real estate construction Pass (a) 836 1,134 633 162 102 28 207 — 3,102 Criticized (c) — — 3 — — — — — 3 Total real estate construction 836 1,134 636 162 102 28 207 — 3,105 Commercial mortgage Pass (a) 3,349 2,501 1,825 1,394 1,050 2,182 838 — 13,139 Criticized (c) 7 5 7 32 31 75 10 — 167 Total commercial mortgage 3,356 2,506 1,832 1,426 1,081 2,257 848 — 13,306 Lease financing Pass (a) 316 140 64 47 37 130 — — 734 Criticized (c) 10 — 2 8 5 1 — — 26 Total lease financing 326 140 66 55 42 131 — — 760 International Pass (a) 317 161 55 88 19 14 498 — 1,152 Criticized (c) 12 — 3 — 3 10 17 — 45 Total international 329 161 58 88 22 24 515 — 1,197 Total business loans 8,868 7,724 3,590 2,841 1,890 3,548 20,806 10 49,277 Retail loans: Residential mortgage Pass (a) 327 398 480 133 68 355 — — 1,761 Criticized (c) 4 — — 9 1 39 — — 53 Total residential mortgage 331 398 480 142 69 394 — — 1,814 Consumer: Home equity Pass (a) — — — — — 9 1,708 40 1,757 Criticized (c) — — — — — — 17 2 19 Total home equity — — — — — 9 1,725 42 1,776 Other consumer Pass (a) 69 38 50 8 1 10 355 — 531 Criticized (c) — — — 1 — — 3 — 4 Total other consumer 69 38 50 9 1 10 358 — 535 Total consumer 69 38 50 9 1 19 2,083 42 2,311 Total retail loans 400 436 530 151 70 413 2,083 42 4,125 Total loans $ 9,268 $ 8,160 $ 4,120 $ 2,992 $ 1,960 $ 3,961 $ 22,889 $ 52 $ 53,402 Table continues on the following page. December 31, 2021 Vintage Year 2021 2020 2019 2018 2017 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 5,270 (b) $ 1,740 (b) $ 1,528 $ 947 $ 713 $ 763 $ 17,241 $ 10 $ 28,212 Criticized (c) 101 120 105 86 26 94 620 2 1,154 Total commercial 5,371 1,860 1,633 1,033 739 857 17,861 12 29,366 Real estate construction: Pass (a) 458 858 849 424 158 34 132 — 2,913 Criticized (c) — 3 — 13 8 8 3 — 35 Total real estate construction 458 861 849 437 166 42 135 — 2,948 Commercial mortgage: Pass (a) 2,491 1,932 1,444 1,343 1,018 2,298 481 — 11,007 Criticized (c) 17 44 50 22 23 87 5 — 248 Total commercial mortgage 2,508 1,976 1,494 1,365 1,041 2,385 486 — 11,255 Lease financing Pass (a) 166 88 97 50 38 179 — — 618 Criticized (c) — 2 10 8 1 1 — — 22 Total lease financing 166 90 107 58 39 180 — — 640 International Pass (a) 381 141 103 29 1 16 480 — 1,151 Criticized (c) 20 10 3 5 4 8 7 — 57 Total international 401 151 106 34 5 24 487 — 1,208 Total business loans 8,904 4,938 4,189 2,927 1,990 3,488 18,969 12 45,417 Retail loans: Residential mortgage Pass (a) 443 527 164 83 111 407 — — 1,735 Criticized (c) 5 — 1 2 7 21 — — 36 Total residential mortgage 448 527 165 85 118 428 — — 1,771 Consumer: Home equity Pass (a) — — — — — 11 1,460 45 1,516 Criticized (c) — — — — — 1 12 4 17 Total home equity — — — — — 12 1,472 49 1,533 Other consumer Pass (a) 101 68 13 9 1 31 337 — 560 Criticized (c) — — — — — — 4 — 4 Total other consumer 101 68 13 9 1 31 341 — 564 Total consumer 101 68 13 9 1 43 1,813 49 2,097 Total retail loans 549 595 178 94 119 471 1,813 49 3,868 Total loans $ 9,453 $ 5,533 $ 4,367 $ 3,021 $ 2,109 $ 3,959 $ 20,782 $ 61 $ 49,285 (a) Includes all loans not included in the categories of special mention, substandard or nonaccrual. (b) Includes Small Business Administration Paycheck Protection Program (PPP) loans of $35 million and $459 million at December 31, 2022 and 2021, respectively. (c) Includes loans with an internal rating of special mention, substandard loans for which the accrual of interest has not been discontinued and nonaccrual loans. Special mention loans have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. Accruing substandard loans have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans are also distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies. These categories are generally consistent with the "special mention" and "substandard" categories as defined by regulatory authorities. A minority of nonaccrual loans are consistent with the "doubtful" category. Loan interest receivable totaled $261 million and $120 million at December 31, 2022 and 2021, respectively, and was included in accrued income and other assets on the Consolidated Balance Sheets. Allowance for Credit Losses The following table details the changes in the allowance for credit losses. 2022 2021 2020 (in millions) Business Loans Retail Loans Total Business Loans Retail Loans Total Business Loans Retail Loans Total Years Ended December 31, Balance at beginning of period: Allowance for loan losses $ 531 $ 57 $ 588 $ 895 $ 53 $ 948 $ 601 $ 36 $ 637 Allowance for credit losses on lending-related commitments 24 6 30 35 9 44 28 3 31 Allowance for credit losses 555 63 618 930 62 992 629 39 668 Cumulative effect of change in accounting principle — — — — — — (42) 25 (17) Loan charge-offs (65) (3) (68) (67) (3) (70) (233) (5) (238) Recoveries on loans previously charged-off 47 4 51 76 4 80 38 4 42 Net loan (charge-offs) recoveries (18) 1 (17) 9 1 10 (195) (1) (196) Provision for credit losses: Provision for loan losses 28 11 39 (373) 3 (370) 531 (7) 524 Provision for credit losses on lending-related commitments 16 5 21 (11) (3) (14) 7 6 13 Provision for credit losses 44 16 60 (384) — (384) 538 (1) 537 Balance at end of period: Allowance for loan losses 541 69 610 531 57 588 895 53 948 Allowance for credit losses on lending-related commitments 40 11 51 24 6 30 35 9 44 Allowance for credit losses $ 581 $ 80 $ 661 $ 555 $ 63 $ 618 $ 930 $ 62 $ 992 Allowance for loan losses as a percentage of total loans 1.10 % 1.67 % 1.14 % 1.17 % 1.47 % 1.19 % 1.85 % 1.32 % 1.81 % Allowance for credit losses as a percentage of total loans 1.18 1.96 1.24 1.22 1.63 1.26 1.93 1.55 1.90 Nonaccrual Loans The following table presents additional information regarding nonaccrual loans. Interest income of $12 million, $11 million and $7 million was recognized on nonaccrual loans for the years ended December 31, 2022, 2021 and 2020, respectively. (in millions) Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total December 31, 2022 Business loans: Commercial $ 64 $ 78 $ 142 Real estate construction: Other business lines (a) — 3 3 Commercial mortgage: Commercial Real Estate business line (b) — 1 1 Other business lines (a) 4 18 22 Total commercial mortgage 4 19 23 International 3 — 3 Total business loans 71 100 171 Retail loans: Residential mortgage 53 — 53 Consumer: Home equity 15 — 15 Other consumer 1 — 1 Total consumer 16 — 16 Total retail loans 69 — 69 Total nonaccrual loans $ 140 $ 100 $ 240 December 31, 2021 Business loans: Commercial $ 8 $ 165 $ 173 Real estate construction: Other business lines (a) — 6 6 Commercial mortgage: Commercial Real Estate business line (b) — 1 1 Other business lines (a) 4 27 31 Total commercial mortgage 4 28 32 International — 5 5 Total business loans 12 204 216 Retail loans: Residential mortgage 36 — 36 Consumer: Home equity 12 — 12 Total retail loans 48 — 48 Total nonaccrual loans $ 60 $ 204 $ 264 (a) Primarily loans secured by owner-occupied real estate. (b) Primarily loans to real estate developers. Foreclosed Properties Foreclosed properties were insignificant at December 31, 2022, compared to $1 million at December 31, 2021. Retail loans secured by residential real estate properties in process of foreclosure included in nonaccrual loans were insignificant at December 31, 2022 compared to none at December 31, 2021. Troubled Debt Restructurings The following table details the amortized cost basis at December 31, 2022 and 2021 of loans considered to be TDRs that were restructured during the years ended December 31, 2022 and 2021, by type of modification. In cases of loans with more than one type of modification, the loans were categorized based on the most significant modification. 2022 2021 (a) Type of Modification Type of Modification (in millions) Principal Deferrals (b) Interest Rate Reductions Total Modifications Principal Deferrals (b) Interest Rate Reductions Total Modifications Years Ended December 31, Business loans: Commercial $ 26 $ — $ 26 $ 8 $ — $ 8 Real estate construction: Other business lines (c) 3 — 3 — — — Commercial mortgage: Other business lines (c) 14 — 14 — — — Total business loans 43 — 43 8 — 8 Retail loans: Residential mortgage — 27 27 — — — Consumer: Home equity (d) 1 1 2 — 2 2 Other consumer — 1 1 — — — Total consumer 1 2 3 — 2 2 Total retail loans 1 29 30 — 2 2 Total loans $ 44 $ 29 $ 73 $ 8 $ 2 $ 10 (a) Under the provisions of the CARES Act, qualifying COVID-19-related modifications, primarily principal deferrals, were not considered TDRs during the year ended December 31, 2021. (b) Primarily represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. Also includes commercial loans restructured in bankruptcy. (c) Primarily loans secured by owner-occupied real estate. (d) Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt. The Corporation charges interest on principal balances outstanding during deferral periods. Additionally, none of the modifications involved forgiveness of principal. There were no significant commitments to lend additional funds to borrowers whose terms have been modified in TDRs at December 31, 2022 and 2021. On an ongoing basis, the Corporation monitors the performance of modified loans to their restructured terms. The allowance for loan losses continues to be reassessed on the basis of an individual evaluation of the loan. For principal deferrals, incremental deterioration in the credit quality of the loan, represented by a downgrade in the risk rating of the loan, for example, due to missed interest payments or a reduction of collateral value, is considered a subsequent default. For interest rate reductions, a subsequent payment default is defined in terms of delinquency, when a principal or interest payment is 90 days past due. Of the TDRs modified during the years ended December 31, 2022 and 2021, there were $6 million of subsequent defaults of principal deferrals and no interest rate reductions for the year ended December 31, 2022, compared to no principal deferrals or interest rate reductions for the comparable period in 2021.

Significant Group Concentration

Significant Group Concentrations of Credit Risk	12 Months Ended
Significant Group Concentrations of Credit Risk	Dec. 31, 2022
Significant Group Concentrations of Credit Risk [Abstract]
Significant Group Concentrations of Credit Risk	SIGNIFICANT GROUP CONCENTRATIONS OF CREDIT RISK Concentrations of credit risk may exist when a number of borrowers are engaged in similar activities, or activities in the same geographic region, and have similar economic characteristics that would cause them to be similarly impacted by changes in economic or other conditions. Concentrations of both on-balance sheet and off-balance sheet credit risk are controlled and monitored as part of credit policies. The Corporation is a regional financial services holding company with a geographic concentration of its on-balance-sheet and off-balance-sheet activities in Michigan, California and Texas. At December 31, 2022, the Corporation's concentration of credit risk with the commercial real estate industry, which includes a portfolio of real estate construction and commercial mortgage loans, represented 31 percent of total loans. The following table summarizes the Corporation's commercial real estate loan portfolio by loan category. (in millions) December 31 2022 2021 Real estate construction loans: Commercial Real Estate business line (a) $ 2,505 $ 2,391 Other business lines (b) 600 557 Total real estate construction loans 3,105 2,948 Commercial mortgage loans: Commercial Real Estate business line (a) 4,681 3,338 Other business lines (b) 8,625 7,917 Total commercial mortgage loans 13,306 11,255 Total commercial real estate loans $ 16,411 $ 14,203 Total unused commitments on commercial real estate loans $ 6,602 $ 4,030 (a) Primarily loans to real estate developers. (b) Primarily loans secured by owner-occupied real estate. The Corporation also has a concentration of credit risk with the automotive industry, which represented 12 percent of total loans at December 31, 2022. Outstanding loans, included in commercial loans on the Consolidated Balance Sheets, and total exposure (outstanding loans, unused commitments and standby letters of credit) to companies related to the automotive industry were as follows: (in millions) December 31 2022 2021 Automotive loans: Production $ 1,068 $ 1,112 (a) Dealer 5,367 4,162 Total automotive loans $ 6,435 $ 5,274 Total automotive exposure: Production $ 2,028 $ 2,041 (a) Dealer 10,910 10,665 Total automotive exposure $ 12,938 $ 12,706 (a) Excludes PPP loans.

Premises and Equipment

Premises and Equipment	12 Months Ended
Premises and Equipment	Dec. 31, 2022
Premises and Equipments [Abstract]
Premises and Equipment	PREMISES AND EQUIPMENT A summary of premises and equipment by major category follows: (in millions) December 31 2022 2021 Land $ 81 $ 85 Buildings and improvements 737 852 Furniture and equipment 518 516 Total cost 1,336 1,453 Less: Accumulated depreciation and amortization (936) (999) Net book value $ 400 $ 454

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
Goodwill and Intangible Assets	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Core Deposit Intangibles	GOODWILL AND CORE DEPOSIT INTANGIBLES The following table summarizes the carrying value of goodwill by reporting unit for the years ended December 31, 2022 and 2021. (in millions) December 31 2022 2021 Commercial Bank $ 473 $ 473 Retail Bank 101 101 Wealth Management 61 61 Total $ 635 $ 635 The Corporation performs its annual evaluation of goodwill impairment in the third quarter of each year and may elect to perform a quantitative impairment analysis or first conduct a qualitative analysis to determine if a quantitative analysis is necessary. In addition, the Corporation evaluates goodwill impairment on an interim basis if events or changes in circumstances between annual tests indicate additional testing may be warranted to determine if goodwill might be impaired. In 2022 and 2021, the annual test of goodwill impairment was performed as of the beginning of the third quarter, and in both periods, a qualitative assessment resulted in the Corporation determining goodwill was not impaired, as it was more likely than not that the fair value of each reporting unit exceeded its carrying value. The Corporation recorded amortization expense related to the core deposit intangible of $1 million for both the years ended December 31, 2021 and 2020. The core deposit intangible was fully amortized at December 31, 2021.

Derivative And Credit-Related F

Derivative And Credit-Related Financial Instruments	12 Months Ended
Derivative And Credit-Related Financial Instruments	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	DERIVATIVE AND CREDIT-RELATED FINANCIAL INSTRUMENTS In the normal course of business, the Corporation enters into various transactions involving derivative and credit-related financial instruments to manage exposure to fluctuations in interest rate, foreign currency and other market risks and to meet the financing needs of customers (customer-initiated derivatives). These financial instruments involve, to varying degrees, elements of market and credit risk. Market and credit risk are included in the determination of fair value. Market risk is the potential loss that may result from movements in interest rates, foreign currency exchange rates or energy commodity prices that cause an unfavorable change in the value of a financial instrument. The Corporation manages this risk by establishing monetary exposure limits and monitoring compliance with those limits. Market risk inherent in interest rate and energy contracts entered into on behalf of customers is mitigated by taking offsetting positions, except in those circumstances when the amount, tenor and/or contract rate level results in negligible economic risk, whereby the cost of purchasing an offsetting contract is not economically justifiable. The Corporation mitigates most of the inherent market risk in foreign exchange contracts entered into on behalf of customers by taking offsetting positions and manages the remainder through individual foreign currency position limits and aggregate value-at-risk limits. These limits are established annually and positions are monitored quarterly. Market risk inherent in derivative instruments held or issued for risk management purposes is typically offset by changes in the fair value of the assets or liabilities being hedged. Credit risk is the possible loss that may occur in the event of nonperformance by the counterparty to a financial instrument. The Corporation attempts to minimize credit risk arising from customer-initiated derivatives by evaluating the creditworthiness of each customer, adhering to the same credit approval process used for traditional lending activities and obtaining collateral as deemed necessary. Derivatives with dealer counterparties are either cleared through a clearinghouse or settled directly with a single counterparty. For derivatives settled directly with dealer counterparties, the Corporation utilizes counterparty risk limits and monitoring procedures as well as master netting arrangements and bilateral collateral agreements to facilitate the management of credit risk. Included in the fair value of derivative instruments are credit valuation adjustments reflecting counterparty credit risk. These adjustments are determined by applying a credit spread for the counterparty or the Corporation, as appropriate, to the total expected exposure of the derivative. Master netting arrangements effectively reduce credit valuation adjustments by permitting settlement of positive and negative positions and offset cash collateral held with the same counterparty on a net basis. Bilateral collateral agreements require daily exchange of cash or highly rated securities issued by the U.S. Treasury or other U.S. government entities to collateralize amounts due to either party. At December 31, 2022, counterparties with bilateral collateral agreements deposited $185 million of cash with the Corporation to secure the fair value of contracts in an unrealized gain position, and the Corporation had pledged $202 million of marketable investment securities and posted $4 million of cash as collateral for contracts in an unrealized loss position. For those counterparties not covered under bilateral collateral agreements, collateral is obtained, if deemed necessary, based on the results of management’s credit evaluation of the counterparty. Collateral varies, but may include cash, investment securities, accounts receivable, equipment or real estate. Derivative Instruments Derivative instruments utilized by the Corporation are negotiated over-the-counter and primarily include swaps, caps and floors, forward contracts and options, each of which may relate to interest rates, energy commodity prices or foreign currency exchange rates. Swaps are agreements in which two parties periodically exchange cash payments based on specified indices applied to a specified notional amount until a stated maturity. Caps and floors are agreements which entitle the buyer to receive cash payments based on the difference between a specified reference rate or price and an agreed strike rate or price, applied to a specified notional amount until a stated maturity. Forward contracts are over-the-counter agreements to buy or sell an asset at a specified future date and price. Options are similar to forward contracts except the purchaser has the right, but not the obligation, to buy or sell the asset during a specified period or at a specified future date. Over-the-counter contracts are tailored to meet the needs of the counterparties involved and, therefore, contain a greater degree of credit risk and liquidity risk than exchange-traded contracts, which have standardized terms and readily available price information. The Corporation reduces exposure to market and liquidity risks from over-the-counter derivative instruments entered into for risk management purposes, and transactions entered into to mitigate the market risk associated with customer-initiated transactions, by taking offsetting positions with investment grade domestic and foreign financial institutions and subjecting counterparties to credit approvals, limits and collateral monitoring procedures similar to those used in making other extensions of credit. In addition, certain derivative contracts executed bilaterally with a dealer counterparty in the over-the-counter market are cleared through a clearinghouse, whereby the clearinghouse becomes the counterparty to the transaction. The following table presents the composition of the Corporation’s derivative instruments held or issued for risk management purposes or in connection with customer-initiated and other activities at December 31, 2022 and 2021. The table excludes a derivative related to the Corporation's 2008 sale of its remaining ownership of Visa shares and includes accrued interest receivable and payable. December 31, 2022 December 31, 2021 Fair Value Fair Value (in millions) Notional/ Gross Derivative Assets Gross Derivative Liabilities Notional/ Gross Derivative Assets Gross Derivative Liabilities Risk management purposes Derivatives designated as hedging instruments Interest rate contracts: Fair value swaps - receive fixed/pay floating $ 3,150 $ — $ — $ 2,650 $ — $ — Cash flow swaps - receive fixed/ pay floating (b) 26,600 — 50 8,050 — — Derivatives used as economic hedges Foreign exchange contracts: Spot, forwards and swaps 392 1 3 452 — 2 Total risk management purposes 30,142 1 53 11,152 — 2 Customer-initiated and other activities Interest rate contracts: Caps and floors written 924 — 25 809 — 3 Caps and floors purchased 924 25 — 809 3 — Swaps 18,450 181 569 19,382 236 66 Total interest rate contracts 20,298 206 594 21,000 239 69 Energy contracts: Caps and floors written 4,051 — 430 1,779 — 203 Caps and floors purchased 4,051 431 — 1,779 204 — Swaps 6,419 589 576 4,212 466 459 Total energy contracts 14,521 1,020 1,006 7,770 670 662 Foreign exchange contracts: Spot, forwards, options and swaps 2,704 52 42 1,716 19 14 Total customer-initiated and other activities 37,523 1,278 1,642 30,486 928 745 Total gross derivatives $ 67,665 1,279 1,695 $ 41,638 928 747 Amounts offset in the Consolidated Balance Sheets: Netting adjustment - Offsetting derivative assets/liabilities (644) (644) (187) (187) Netting adjustment - Cash collateral received/posted (180) (4) (15) (452) Net derivatives included in the Consolidated Balance Sheets (c) 455 1,047 726 108 Amounts not offset in the Consolidated Balance Sheets: Marketable securities pledged under bilateral collateral agreements (70) (202) — (52) Net derivatives after deducting amounts not offset in the Consolidated Balance Sheets $ 385 $ 845 $ 726 $ 56 (a) Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected on the Consolidated Balance Sheets. (b) December 31, 2022 included $4.6 billion of forward starting swaps that will become effective on their contractual start dates in 2023 and 2024. (c) Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets included credit valuation adjustments for counterparty credit risk of $2 million and $9 million at December 31, 2022 and 2021, respectively. Risk Management The Corporation's derivative instruments used for managing interest rate risk include cash flow hedging strategies that convert variable-rate loans to fixed rates and fair value hedging strategies that convert fixed-rate medium-and long-term debt to variable rates. Interest and fees on loans included $(25) million, $95 million and $70 million of cash flow hedge (loss) income for the years ended December 31, 2022, 2021 and 2020, respectively. The following table details the effects of fair value hedging on the Consolidated Statements of Comprehensive Income. (in millions) Interest on Medium- and Long-Term Debt Years Ended December 31 2022 2021 2020 Total interest on medium-and long-term debt (a) $ 87 $ 35 $ 80 Fair value hedging relationships: Interest rate contracts: Hedged items 112 102 109 Derivatives designated as hedging instruments (25) (68) (51) (a) Includes the effects of hedging. Centrally-cleared derivative positions are settled daily based on derivative fair values and the party receiving net settlement amounts pays price alignment, based on an earning rate, to the party making settlement payments. Accordingly, the Corporation may recognize risk management hedging income consisting of price alignment income or expense depending on the fair value of its positions. Price alignment income was reported in other noninterest income on the Consolidated Statements of Income and totaled $8 million for the year ending December 31, 2022 and was insignificant for the years ending December 31, 2021 and 2020. For information on accumulated net (losses) gains on cash flow hedges, refer to Note 14. The following tables summarize the expected weighted average remaining maturity of the notional amount of risk management interest rate swaps, the weighted average interest rates associated with amounts expected to be received or paid on interest rate swap agreements, and for fair value swaps, the carrying amount of the related hedged items, as of December 31, 2022 and 2021. Cash flow swaps - receive fixed/pay floating rate on variable-rate loans (dollar amounts in millions) December 31, 2022 December 31, 2021 Weighted average: Time to maturity (in years) 4.6 2.4 Receive rate (a) 2.35 % 1.84 % Pay rate (a), (b) 4.07 0.10 (a) Excludes forward starting swaps not effective as of the period shown. December 31, 2022 excluded $4.6 billion of forward starting swaps. December 31, 2021 excluded $3.0 billion of forward starting swaps. (b) Variable rates paid on receive fixed swaps designated as cash flow hedges are based on one-month LIBOR, BSBY or Secured Overnight Financing Rate (SOFR) rates in effect at December 31, 2022 and 2021. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily SOFR with a spread adjustment. Fair value swaps - receive fixed/pay floating rate on medium- and long-term debt (dollar amounts in millions) December 31, 2022 December 31, 2021 Carrying value of hedged items (a) 3,024 2,796 Weighted average: Time to maturity (in years) 3.9 3.6 Receive rate 3.52 % 3.68 % Pay rate (b) 4.90 1.08 (a) Included $(124) million and $145 million of cumulative hedging adjustments at December 31, 2022 and 2021, respectively, which included $4 million and $5 million, respectively, of hedging adjustment on a discontinued hedging relationship. (b) Floating rates paid on receive fixed swaps designated as fair value hedges are based on one-month LIBOR rates in effect at December 31, 2022 and 2021. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily SOFR with a spread adjustment. Customer-Initiated and Other The Corporation enters into derivative transactions at the request of customers and generally takes offsetting positions with dealer counterparties to mitigate the inherent market risk. Income primarily results from the spread between the customer derivative and the offsetting dealer position. For customer-initiated foreign exchange contracts where offsetting positions have not been taken, the Corporation manages the remaining inherent market risk through individual foreign currency position limits and aggregate value-at-risk limits. These limits are established annually and reviewed quarterly. For those customer-initiated derivative contracts which were not offset or where the Corporation holds a position within the limits described above, the Corporation recognized no net gains and losses in other noninterest income on the Consolidated Statements of Income for the years ending December 31, 2022, 2021 and 2020, respectively. Fair values of customer-initiated and other derivative instruments represent the net unrealized gains or losses on such contracts and are recorded on the Consolidated Balance Sheets. Changes in fair value are recognized on the Consolidated Statements of Income. The net gains recognized in income on customer-initiated derivative instruments, net of the impact of offsetting positions included in derivative income, were as follows: Years Ended December 31, (in millions) 2022 2021 2020 Interest rate contracts $ 34 $ 36 $ 26 Energy contracts 28 18 1 Foreign exchange contracts 47 45 40 Total $ 109 $ 99 $ 67 Credit-Related Financial Instruments The Corporation issues off-balance sheet financial instruments in connection with commercial and consumer lending activities. The Corporation’s credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. (in millions) December 31 2022 2021 Unused commitments to extend credit: Commercial and other $ 30,800 $ 25,910 Bankcard, revolving credit and home equity loan commitments 4,017 3,554 Total unused commitments to extend credit $ 34,817 $ 29,464 Standby letters of credit $ 3,712 $ 3,378 Commercial letters of credit 39 44 The Corporation maintains an allowance to cover current expected credit losses inherent in lending-related commitments, including unused commitments to extend credit, letters of credit and financial guarantees. The allowance for credit losses on lending-related commitments, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $51 million and $30 million at December 31, 2022 and 2021, respectively. Unused Commitments to Extend Credit Commitments to extend credit are legally binding agreements to lend to a customer, provided there is no violation of any condition established in the contract. These commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many commitments expire without being drawn upon, the total contractual amount of commitments does not necessarily represent future cash requirements of the Corporation. Commercial and other unused commitments are primarily variable rate commitments. The allowance for credit losses on lending-related commitments included $44 million and $27 million at December 31, 2022 and 2021, respectively, for expected credit losses inherent in the Corporation’s unused commitments to extend credit. Standby and Commercial Letters of Credit Standby letters of credit represent conditional obligations of the Corporation which guarantee the performance of a customer to a third party. Standby letters of credit are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing and similar transactions. Commercial letters of credit are issued to finance foreign or domestic trade transactions. These contracts expire in decreasing amounts through the year 2029. The Corporation may enter into participation arrangements with third parties that effectively reduce the maximum amount of future payments which may be required under standby and commercial letters of credit. These risk participations covered $107 million and $98 million at December 31, 2022 and 2021, respectively, of the $3.8 billion and $3.4 billion of standby and commercial letters of credit outstanding at December 31, 2022 and 2021, respectively. The carrying value of the Corporation’s standby and commercial letters of credit, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, totaled $35 million at December 31, 2022, including $28 million in deferred fees and $7 million in the allowance for credit losses on lending-related commitments. At December 31, 2021, the comparable amounts were $32 million, $29 million and $3 million, respectively. The following table presents a summary of criticized standby and commercial letters of credit at December 31, 2022 and 2021. The Corporation's criticized list is consistent with the Special Mention, Substandard and Doubtful categories defined by regulatory authorities. The Corporation manages credit risk through underwriting, periodically reviewing and approving its credit exposures using Board committee approved credit policies and guidelines. (dollar amounts in millions) December 31, 2022 December 31, 2021 Total criticized standby and commercial letters of credit $ 37 $ 37 As a percentage of total outstanding standby and commercial letters of credit 1.0 % 1.1 % Other Credit-Related Financial Instruments The Corporation enters into credit risk participation agreements, under which the Corporation assumes credit exposure associated with a borrower’s performance related to certain interest rate derivative contracts. The Corporation is not a party to the interest rate derivative contracts and only enters into these credit risk participation agreements in instances in which the Corporation is also a party to the related loan participation agreement for such borrowers. The Corporation manages its credit risk on the credit risk participation agreements by monitoring the creditworthiness of the borrowers, which is based on the normal credit review process as if the Corporation had entered into the derivative instruments directly with the borrower. The notional amount of such credit risk participation agreements reflects the pro-rata share of the derivative instrument, consistent with its share of the related participated loan. The total notional amount of the credit risk participation agreements was approximately $951 million and $1.1 billion at December 31, 2022 and 2021, respectively, and the fair value was insignificant at December 31, 2022 and $1 million at December 31, 2021. The maximum estimated exposure to these agreements, as measured by projecting a maximum value of the guaranteed derivative instruments, assuming 100 percent default by all obligors on the maximum values, was insignificant at December 31, 2022 and $30 million at December 31, 2021. In the event of default, the lead bank has the ability to liquidate the assets of the borrower, in which case the lead bank would be required to return a percentage of the recouped assets to the participating banks. As of December 31, 2022, the weighted average remaining maturity of outstanding credit risk participation agreements was 3.8 years. In 2008, the Corporation sold its remaining ownership of Visa Class B shares and entered into a derivative contract. Under the terms of the derivative contract, the Corporation will compensate the counterparty primarily for dilutive adjustments made to the conversion factor of the Visa Class B shares to Class A shares based on the ultimate outcome of litigation involving Visa. Conversely, the Corporation will be compensated by the counterparty for any increase in the conversion factor from anti- dilutive adjustments. The notional amount of the derivative contract was equivalent to approximately 780,000 Visa Class B Shares. The fair value of the derivative liability, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $12 million and $13 million at December 31, 2022 and December 31, 2021, respectively.

Variable Interest Entities (VIE

Variable Interest Entities (VIEs)	12 Months Ended
Variable Interest Entities (VIEs)	Dec. 31, 2022
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Variable Interest Entities (VIEs)	VARIABLE INTEREST ENTITIES (VIEs) The Corporation evaluates its interest in certain entities to determine if these entities meet the definition of a VIE and whether the Corporation is the primary beneficiary and should consolidate the entity based on the variable interests it held both at inception and when there is a change in circumstances that requires a reconsideration. The Corporation holds ownership interests in funds in the form of limited partnerships or limited liability companies (LLCs) investing in affordable housing projects that qualify for the low-income housing tax credit (LIHTC). The Corporation also directly invests in limited partnerships and LLCs which invest in community development projects, which generate similar tax credits to investors (other tax credit entities). As an investor, the Corporation obtains income tax credits and deductions from the operating losses of these tax credit entities. These tax credit entities meet the definition of a VIE; however, the Corporation is not the primary beneficiary of the entities, as the general partner or the managing member has both the power to direct the activities that most significantly impact the economic performance of the entities and the obligation to absorb losses or the right to receive benefits that could be significant to the entities. The Corporation accounts for its interests in LIHTC entities using the proportional amortization method. Ownership interests in other tax credit entities are accounted for under either the cost or equity method. Exposure to loss as a result of the Corporation’s involvement in LIHTC entities and other tax credit entities at December 31, 2022 was limited to $475 million and $31 million, respectively. Investment balances, including all legally binding commitments to fund future investments, are included in accrued income and other assets on the Consolidated Balance Sheets. A liability is recognized in accrued expenses and other liabilities on the Consolidated Balance Sheets for all legally binding unfunded commitments to fund tax credit entities ($208 million at December 31, 2022). Amortization and other write-downs of LIHTC investments are presented on a net basis as a component of the provision for income taxes on the Consolidated Statements of Income, while amortization and write-downs of other tax credit investments are recorded in other noninterest income. The income tax credits and deductions are recorded as a reduction of income tax expense and a reduction of federal income taxes payable. The Corporation provided no financial or other support that was not contractually required to any of the above VIEs during the years ended December 31, 2022, 2021 and 2020. The following table summarizes the impact of these tax credit entities on the Corporation’s Consolidated Statements of Income. (in millions) Years Ended December 31 2022 2021 2020 Other noninterest income: Amortization of other tax credit investments $ — $ 1 $ 1 Provision for income taxes: Amortization of LIHTC Investments 72 $ 71 67 Low income housing tax credits (68) (68) (63) Other tax benefits related to tax credit entities (18) (17) (16) Total provision for income taxes $ (14) $ (14) $ (12) For further information on the Corporation’s consolidation policy, see Note 1.

Deposits

Deposits	12 Months Ended
Deposits	Dec. 31, 2022
Deposits [Abstract]
Deposits	DEPOSITS At December 31, 2022, the scheduled maturities of certificates of deposit and other deposits with a stated maturity were as follows: (in millions) Years Ending December 31 2023 $ 1,789 2024 88 2025 24 2026 18 2027 13 Thereafter 5 Total $ 1,937 A maturity distribution of domestic certificates of deposit of $100,000 and over follows: (in millions) December 31 2022 2021 Three months or less $ 220 $ 436 Over three months to six months 136 314 Over six months to twelve months 590 319 Over twelve months 49 74 Total $ 995 $ 1,143

Short-term Borrowings

Short-term Borrowings	12 Months Ended
Short-term Borrowings	Dec. 31, 2022
Short-Term Debt [Abstract]
Short-term Borrowings	SHORT-TERM BORROWINGS Federal funds purchased and securities sold under agreements to repurchase generally mature within one to four days from the transaction date. Other short-term borrowings, which may consist of borrowed securities and short-term notes, generally mature within one to 120 days from the transaction date. At December 31, 2022, other short-term borrowings consisted of advances from the Federal Home Loan Bank (FHLB) of Dallas, Texas, which provides short- and long-term funding to its members through advances collateralized by real estate-related loans, certain government agency-backed securities and other eligible assets. Actual borrowing capacity is contingent on the amount of collateral pledged to the FHLB. At December 31, 2022, $9.5 billion of real estate-related loans and $1.0 billion of investment securities were pledged to the FHLB as collateral for the short-term advances and provided an additional $7.2 billion for potential future borrowings. At December 31, 2022, Comerica Bank (the Bank), a wholly-owned subsidiary of the Corporation, had pledged loans totaling $24.5 billion, which provided for up to $19.6 billion of available collateralized borrowing with the FRB. The following table provides a summary of short-term borrowings. (dollar amounts in millions) Federal Funds Purchased Other December 31, 2022 Amount outstanding at year-end $ 11 $ 3,200 Weighted average interest rate at year-end 4.32 % 4.54 % Maximum month-end balance during the year $ 1,106 $ 3,200 Average balance outstanding during the year 82 354 Weighted average interest rate during the year 3.28 % 4.08 % December 31, 2021 Amount outstanding at year-end $ — $ — Weighted average interest rate at year-end — % — % Maximum month-end balance during the year $ 2 $ — Average balance outstanding during the year 2 — Weighted average interest rate during the year 0.06 % — % December 31, 2020 Amount outstanding at year-end $ — $ — Weighted average interest rate at year-end — % — % Maximum month-end balance during the year $ 1,513 $ 1,250 Average balance outstanding during the year 30 284 Weighted average interest rate during the year 0.97 % 0.25 %

Medium- And Long-Term Debt

Medium- And Long-Term Debt	12 Months Ended
Medium- And Long-Term Debt	Dec. 31, 2022
Debt Disclosure [Abstract]
Medium- And Long-Term Debt	MEDIUM- AND LONG-TERM DEBT Medium- and long-term debt is summarized as follows: (in millions) December 31 2022 2021 Parent company Subordinated notes: 3.80% subordinated notes due 2026 (a) $ 237 $ 265 Medium- and long-term notes: 3.70% notes due 2023 (a) 841 877 4.00% notes due 2029 (a) 515 594 Total medium- and long-term notes 1,356 1,471 Total parent company 1,593 1,736 Subsidiaries Subordinated notes: 4.00% subordinated notes due 2025 (a) 331 363 7.875% subordinated notes due 2026 (a) 165 190 5.332% subordinated notes due 2033 (a) 459 — Total subordinated notes 955 553 Medium- and long-term notes: 2.50% notes due 2024 (a) 476 507 Total subsidiaries 1,431 1,060 Total medium- and long-term debt $ 3,024 $ 2,796 (a) The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate. Subordinated notes with remaining maturities greater than one year qualify as Tier 2 capital. Comerica Bank (the Bank), a wholly-owned subsidiary of the Corporation, is a member of the FHLB, which provides short- and long-term funding to its members through advances collateralized by real estate-related assets. The Bank held no outstanding long-term advances at both December 31, 2022 and 2021. In third quarter 2022, the Bank issued $500 million of fixed-to-floating rate subordinated notes due in 2033, with a rate of 5.332% for the first ten years. The rate on the subordinated notes will reset on August 25, 2032 to Secured Overnight Financing Rate (SOFR) plus 261 basis points until called or matured. Additionally, the Bank entered into a fair value fixed-to-floating rate swap in which the Bank received a fixed rate of 2.67% and will pay a floating rate based on the SOFR for the first 10 years. Unamortized debt issuance costs deducted from the carrying amount of medium- and long-term debt totaled $9 million and $7 million at December 31, 2022 and 2021, respectively. At December 31, 2022, the principal maturities of medium- and long-term debt were as follows: (in millions) Years Ending December 31 2023 $ 850 2024 500 2025 350 2026 400 2027 — Thereafter 1,050 Total $ 3,150

Shareholders' Equity

Shareholders' Equity	12 Months Ended
Shareholders' Equity	Dec. 31, 2022
Stockholders' Equity Note [Abstract]
Stockholders' Equity	SHAREHOLDERS’ EQUITYIn March 2020, as the economic climate grew increasingly uncertain, the Corporation temporarily suspended its share repurchase program, initially authorized in 2010 by the Board of Directors of the Corporation, with a focus on deploying capital to meet customers' growing financial requirements. In the second quarter 2021, share repurchases were resumed under the share repurchase program, including an Accelerated Share Repurchase transaction (ASR). On April 27, 2021, the Corporation's Board of Directors approved the authorization to repurchase up to an additional 10 million shares of its outstanding common stock, including the ASR. Repurchases of common stock under the share repurchase program totaled 377 thousand shares at an average price paid of $92.61 in 2022, 9.5 million shares at an average price paid of $75.82 per share in 2021 and 3.2 million shares at an average price paid of $58.55 per share in 2020. There is no expiration date for the share repurchase program. During the year ended December 31, 2022, the Corporation repurchased $35 million under the share repurchase program. At December 31, 2022, the Corporation had 4.2 million shares of common stock reserved for stock option exercises and restricted stock unit vesting. In May 2020, the Corporation issued and sold 400,000 depositary shares, each representing a 1/100th ownership interest in a share of 5.625% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series A, without par value, with a liquidation preference of $100,000 per share (equivalent of 1,000 per depositary share). Holders of the depositary shares will be entitled to all proportional rights and preferences of the Series A preferred stock (including dividend, voting, redemption and liquidation rights). The $400 million issuance yielded $394 million in proceeds net of underwriting discounts and offering expenses. Dividends on the Series A preferred stock accrue on a non-cumulative basis and are payable in arrears when, as and if authorized by the Corporation’s Board of Directors or a duly authorized committee of the Board and declared by the Corporation, on the first day of January, April, July and October of each year, and commenced on October 1, 2020. Under the terms of the Series A preferred stock, the ability of the Corporation to pay dividends on, make distributions with respect to, or to repurchase, redeem or acquire its common stock or any other stock ranking on parity with or junior to the Series A preferred stock, is subject to restrictions in the event that the Corporation does not declare and either pay or set aside a sum sufficient for payment of dividends on the Series A preferred stock for the immediately preceding dividend period. The Series A preferred stock is perpetual and has no maturity date, but is redeemable by the Corporation at specified times subject to regulatory considerations.

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income	12 Months Ended
Accumulated Other Comprehensive (Loss) Income	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive (Loss) Income	ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME The following table presents a reconciliation of the changes in the components of accumulated other comprehensive (loss) income and details the components of other comprehensive (loss) income for the years ended December 31, 2022, 2021 and 2020, including the amount of income tax (benefit) expense allocated to each component of other comprehensive (loss) income. (in millions) Years Ended December 31 2022 2021 2020 Accumulated net unrealized losses on investment securities: Balance at beginning of period, net of tax $ (99) $ 211 $ 65 Net unrealized (losses) gains arising during the period (2,903) (406) 191 Less: (Benefit) provision for income taxes (683) (96) 45 Change in net unrealized (losses) gains on investment securities, net of tax (2,220) (310) 146 Balance at end of period, net of tax $ (2,319) $ (99) $ 211 Accumulated net (losses) gains on cash flow hedges: Balance at beginning of period, net of tax $ 55 $ 155 $ 34 Net cash flow hedge (losses) gains arising during the period (1,329) (35) 229 Less: (Benefit) provision for income taxes (313) (8) 56 Change in net cash flow hedge (losses) gains arising during the period, net of tax (1,016) (27) 173 Less: Net cash flow (losses) gains included in interest and fees on loans (25) 95 70 Less: (Benefit) provision for income taxes (6) 22 18 Reclassification adjustment for net cash flow hedge (losses) gains included in net income, net of tax (19) 73 52 Change in net cash flow hedge (losses) gains, net of tax (997) (100) 121 Balance at end of period, net of tax (a) $ (942) $ 55 $ 155 Accumulated defined benefit pension and other postretirement plans adjustment: Balance at beginning of period, net of tax $ (168) $ (302) $ (415) Actuarial (loss) gain arising during the period (415) 159 128 Prior service credit arising during the period — 1 — Net defined benefit pension and other postretirement plans adjustment arising during the period (415) 160 128 Less: (Benefit) provision for income taxes (98) 38 31 Net defined benefit pension and other postretirement plans adjustment arising during the period, net of tax (317) 122 97 Amounts recognized in other noninterest expenses: Amortization of actuarial net loss 28 40 47 Amortization of prior service credit (23) (25) (27) Total amounts recognized in other noninterest expenses 5 15 20 Less: Provision for income taxes 1 3 4 Adjustment for amounts recognized as components of net periodic benefit credit during the period, net of tax 4 12 16 Change in defined benefit pension and other postretirement plans adjustment, net of tax (313) 134 113 Balance at end of period, net of tax $ (481) $ (168) $ (302) Total accumulated other comprehensive (loss) income at end of period, net of tax $ (3,742) $ (212) $ 64 (a) The Corporation expects to reclassify $428 million of losses, net of tax, from accumulated other comprehensive loss to earnings over the next twelve months if interest yield curves and notional amounts remain at December 31, 2022 levels.

Net Income Per Common Share

Net Income Per Common Share	12 Months Ended
Net Income Per Common Share	Dec. 31, 2022
Earnings Per Share [Abstract]
Net Income Per Common Share	NET INCOME PER COMMON SHARE Basic and diluted net income per common share are presented in the following table. (in millions, except per share data) Years Ended December 31 2022 2021 2020 Basic and diluted Net income $ 1,151 $ 1,168 $ 497 Less: Income allocated to participating securities 6 5 2 Preferred stock dividends 23 23 13 Net income attributable to common shares $ 1,122 $ 1,140 $ 482 Basic average common shares 131 135 139 Basic net income per common share $ 8.56 $ 8.45 $ 3.45 Basic average common shares 131 135 139 Dilutive common stock equivalents: Net effect of the assumed exercise of stock awards 2 2 1 Diluted average common shares 133 137 140 Diluted net income per common share $ 8.47 $ 8.35 $ 3.43 Declared dividends on preferred stock are excluded from net income attributable to common shares. Refer to Note 13 for further information on preferred stock. The following average shares related to outstanding options to purchase shares of common stock were not included in the computation of diluted net income per common share because the options were anti-dilutive for the period. (average outstanding options in thousands) Years Ended December 31 2022 2021 2020 Average outstanding options 543 438 1,498 Range of exercise prices $70.18 - $95.25 $79.01 - $95.25 $49.20 - $95.25

Share-Based Compensation

Share-Based Compensation	12 Months Ended
Share-Based Compensation	Dec. 31, 2022
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Share-based Compensation	SHARE-BASED COMPENSATION Share-based compensation expense is charged to salaries and benefits expense on the Consolidated Statements of Income. The components of share-based compensation expense for all share-based compensation plans and related tax benefits are as follows: (in millions) Years Ended December 31 2022 2021 2020 Total share-based compensation expense $ 60 $ 41 $ 24 Related tax benefits recognized in net income $ 14 $ 10 $ 6 The following table summarizes unrecognized compensation expense for all share-based plans. (dollar amounts in millions) December 31, 2022 Total unrecognized share-based compensation expense $ 38 Weighted-average expected recognition period (in years) 2.1 The Corporation has share-based compensation plans under which it awards shares of restricted stock units to executive officers, directors and key personnel and stock options to executive officers and key personnel of the Corporation and its subsidiaries. Restricted stock units fully vest after a period ranging from three years to five years, and stock options fully vest after four years. A majority of share-based compensation awards include a retirement eligibility clause where qualified employees are exempt from the service requirements of the award. This generally results in the recognition of compensation expense at the grant date for retirement eligible employees. The maturity of each option is determined at the date of grant; however, no options may be exercised later than ten years from the date of grant. The options may have restrictions regarding exercisability. The plans provide for a grant of up to 7.7 million common shares, plus shares under certain plans that are forfeited, expire or are canceled, which become available for re-grant. At December 31, 2022, over 4.5 million shares were available for grant. The Corporation used a binomial model to value stock options granted in the periods presented. Option valuation models require several inputs, including the expected stock price volatility, and changes in input assumptions can materially affect the fair value estimates. The model used may not necessarily provide a reliable single measure of the fair value of stock options. The risk-free interest rate assumption used in the binomial option-pricing model as outlined in the table below was based on the federal ten-year treasury interest rate. The expected dividend yield was based on the historical and projected long-term dividend yield patterns of the Corporation’s common shares. Expected volatility assumptions considered both the historical volatility of the Corporation’s common stock over a ten-year period and implied volatility based on actively traded options on the Corporation’s common stock with pricing terms and trade dates similar to the stock options granted. Expected option life was based on historical exercise activity over the contractual term of the option grant (ten years), excluding certain forced transactions. The estimated weighted-average grant-date fair value per option and the underlying binomial option-pricing model assumptions are summarized in the following table: Years Ended December 31 2022 2021 2020 Weighted-average grant-date fair value per option $ 25.31 $ 18.36 $ 13.03 Weighted-average assumptions: Risk-free interest rates 1.78 % 1.05 % 1.65 % Expected dividend yield 4.00 4.00 4.14 Volatility 34 39 27 Expected option life (in years) 8.0 7.8 8.4 A summary of the Corporation’s stock option activity and related information for the year ended December 31, 2022 follows: Weighted-Average Number of Exercise Price Remaining Aggregate Outstanding-January 1, 2022 2,244 $ 57.50 Granted 183 92.58 Forfeited or expired (32) 76.55 Exercised (387) 50.64 Outstanding-December 31, 2022 2,008 61.71 5.1 $ 22 Exercisable-December 31, 2022 1,379 $ 57.20 3.9 $ 20 The aggregate intrinsic value of outstanding options shown in the table above represents the total pretax intrinsic value at December 31, 2022, based on the Corporation’s closing stock price of $66.85 at December 31, 2022. The total intrinsic value of stock options exercised was $17 million, $29 million and $6 million for the years ended December 31, 2022, 2021 and 2020, respectively. A summary of the Corporation’s restricted stock activity and related information for the year ended December 31, 2022 follows: Number of Weighted-Average Outstanding-January 1, 2022 41 61.64 Forfeited — — Vested (41) 67.69 Outstanding-December 31, 2022 — $ — The total fair value of restricted stock awards that fully vested was $4 million, $8 million and $17 million for the years ended December 31, 2022, 2021 and 2020, respectively. A summary of the Corporation's restricted stock unit activity and related information for the year ended December 31, 2022 follows: Service-Based Units Performance-Based Units Number of Weighted-Average Number of Weighted-Average Outstanding-January 1, 2022 1,346 $ 59.18 816 $ 63.12 Granted 361 84.14 182 87.45 Forfeited (70) 65.24 (34) 70.40 Vested (a) (232) 65.36 (220) 79.13 Outstanding-December 31, 2022 1,405 64.27 744 64.01 (a) Includes performance-based units valued at zero, as they did not meet the minimum performance threshold. The total fair value of restricted stock units that fully vested was $19 million, $21 million and $12 million for the years ended December 31, 2022, 2021 and 2020, respectively. The Corporation expects to satisfy the exercise of stock options, the vesting of restricted stock units and future grants of restricted stock by issuing shares of common stock out of treasury. At December 31, 2022, the Corporation held 97 million shares in treasury. For further information on the Corporation’s share-based compensation plans, refer to Note 1.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Employee Benefit Plans	EMPLOYEE BENEFIT PLANS Defined Benefit Pension and Postretirement Benefit Plans The Corporation has a qualified and non-qualified defined benefit pension plan. In October 2016, the Corporation modified its defined benefit pension plans to freeze final average pay benefits as of December 31, 2016, other than for participants who were age 60 or older as of December 31, 2016, and added a cash balance plan provision effective January 1, 2017. Active pension plan participants 60 years or older as of December 31, 2016 receive the greater of the final average pay formula or the frozen final average pay benefit as of December 31, 2016 plus the cash balance benefit earned after January 1, 2017. Employees participating in the retirement account plan as of December 31, 2016 were eligible to participate in the cash balance pension plan effective January 1, 2017. Benefits earned under the cash balance pension formula, in the form of an account balance, include contribution credits based on eligible pay earned each month, age and years of service and monthly interest credits based on the 30-year Treasury rate. The Corporation’s postretirement benefit plan provides postretirement health care and life insurance benefits for retirees as of December 31, 1992. The plan also provides certain postretirement health care and life insurance benefits for a limited number of retirees who retired prior to January 1, 2000. For all other employees hired prior to January 1, 2000, a nominal benefit is provided. Employees hired on or after January 1, 2000 and prior to January 1, 2007 are eligible to participate in the plan on a full contributory basis until Medicare-eligible based on age and service. Employees hired on or after January 1, 2007 are not eligible to participate in the plan. The Corporation funds the pre-1992 retiree plan benefits with bank-owned life insurance. Effective January 1, 2022, the plan moved from a self-insured plan to the Medicare and pre-65 individual marketplace with a funded Health Reimbursement Arrangement account for those with subsidized coverage. This change did not have a material impact on the Corporation's consolidated financial condition, results of operations or cash flow. The following table sets forth reconciliations of plan assets and the projected benefit obligation, the weighted-average assumptions used to determine year-end benefit obligations, and the amounts recognized in accumulated other comprehensive (loss) income for the Corporation’s defined benefit pension plans and postretirement benefit plan at December 31, 2022 and 2021. The Corporation used a measurement date of December 31, 2022 for these plans. Defined Benefit Pension Plans Qualified Non-Qualified Postretirement Benefit Plan (dollar amounts in millions) 2022 2021 2022 2021 2022 2021 Change in fair value of plan assets: Fair value of plan assets at January 1 $ 3,462 $ 3,350 $ — $ — $ 53 $ 57 Actual return on plan assets (777) 291 — — (4) (1) Plan participants' contributions — — — — — 1 Benefits paid (177) (179) — — (3) (4) Fair value of plan assets at December 31 $ 2,508 $ 3,462 $ — $ — $ 46 $ 53 Change in projected benefit obligation: Projected benefit obligation at January 1 $ 2,214 $ 2,327 $ 207 $ 252 $ 31 $ 35 Service cost 37 38 2 2 — — Interest cost 62 61 6 7 1 1 Actuarial gain (525) (69) (37) (3) (8) (1) Plan participants' contributions — — — — — 1 Benefits paid (177) (179) (15) (15) (3) (4) Plan amendments (a) — 36 — (36) — (1) Projected benefit obligation at December 31 $ 1,611 $ 2,214 $ 163 $ 207 $ 21 $ 31 Accumulated benefit obligation $ 1,598 $ 2,199 $ 161 $ 204 $ 21 $ 31 Funded status at December 31 (b) (c) $ 897 $ 1,248 $ (163) $ (207) $ 25 $ 22 Weighted-average assumptions used: Discount rate 5.60 % 2.96 % 5.60 % 2.96 % 5.71 % 2.79 % Rate of compensation increase 4.25 4.00 4.25 4.00 n/a n/a Interest crediting rate 3.99 - 5.25 3.79 - 5.00 3.99 - 5.25 3.79 - 5.00 n/a n/a Amounts recognized in accumulated other comprehensive (loss) income before income taxes: Net actuarial loss $ (638) $ (205) $ (46) $ (92) $ (10) $ (11) Prior service credit 33 48 38 47 2 2 Balance at December 31 $ (605) $ (157) $ (8) $ (45) $ (8) $ (9) (a) The qualified defined benefit pension plan was amended in 2021 to include a flat dollar benefit for specified participants that would otherwise have been payable from the non-qualified defined benefit pension plan, resulting in a shift in projected benefit obligation from the non-qualified plan to the qualified plan. (b) Based on projected benefit obligation for defined benefit pension plans and accumulated benefit obligation for postretirement benefit plan. (c) The Corporation recognizes the overfunded and underfunded status of the plans in accrued income and other assets and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets. n/a - not applicable Because the non-qualified defined benefit pension plan has no assets, the accumulated benefit obligation exceeded the fair value of plan assets at December 31, 2022 and December 31, 2021. The following table details the changes in plan assets and benefit obligations recognized in other comprehensive loss for the year ended December 31, 2022. Defined Benefit Pension Plans (in millions) Qualified Non-Qualified Postretirement Benefit Plan Total Actuarial gain (loss) arising during the period $ (453) $ 37 $ 1 $ (415) Amortization of net actuarial loss 19 9 — 28 Amortization of prior service credit (14) (9) — (23) Total recognized in other comprehensive loss $ (448) $ 37 $ 1 $ (410) Components of net periodic defined benefit (credit) cost and postretirement benefit credit, the actual return on plan assets and the weighted-average assumptions used were as follows: Defined Benefit Pension Plans (dollar amounts in millions) Qualified Non-Qualified Years Ended December 31 2022 2021 2020 2022 2021 2020 Service cost (a) $ 37 $ 38 $ 32 $ 2 $ 2 $ 1 Other components of net benefit (credit) cost: Interest cost 62 61 70 6 7 8 Expected return on plan assets (201) (202) (185) — — — Amortization of prior service credit (14) (19) (19) (9) (6) (8) Amortization of actuarial net loss 19 29 38 9 11 9 Total other components of net benefit (credit) cost (b) (134) (131) (96) 6 12 9 Net periodic defined benefit (credit) cost $ (97) $ (93) $ (64) $ 8 $ 14 $ 10 Actual return on plan assets $ (777) $ 291 $ 537 n/a n/a n/a Actual rate of return on plan assets (23.02) % 8.92 % 18.72 % n/a n/a n/a Weighted-average assumptions used: Discount rate 2.96 % 2.71 % 3.43 % 2.96 % 2.71 % 3.43 % Expected long-term return on plan assets 6.50 6.50 6.50 n/a n/a n/a Rate of compensation increase 4.00 4.00 4.00 4.00 4.00 4.00 (a) Included in salaries and benefits expense on the Consolidated Statements of Income. (b) Included in other noninterest expenses on the Consolidated Statements of Income. n/a - not applicable (dollar amounts in millions) Postretirement Benefit Plan Years Ended December 31 2022 2021 2020 Other components of net benefit credit: Interest cost $ 1 $ 1 $ 1 Expected return on plan assets (3) (3) (2) Net periodic postretirement benefit credit $ (2) $ (2) $ (1) Actual return on plan assets $ (4) $ (1) $ 3 Actual rate of return on plan assets (8.24 %) (2.25 %) 6.00 % Weighted-average assumptions used: Discount rate 2.79% 2.43 % 3.26 % Expected long-term return on plan assets 5.00 5.00 5.00 Healthcare cost trend rate (a): Cost trend rate assumed n/a 6.00 6.25 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) n/a 4.50 4.50 Year that the rate reaches the ultimate trend rate n/a 2027 2027 (a) Beginning January 1, 2022, the healthcare cost trend assumption is no longer a relevant assumption due to the change from a self-insured plan to the Medicare and pre-65 individual marketplace with a funded Health Reimbursement Arrangement account. n/a - not applicable The expected long-term rate of return of plan assets is the average rate of return expected to be realized on funds invested or expected to be invested over the life of the plan, which has an estimated duration of approximately 9 years as of December 31, 2022. The expected long-term rate of return on plan assets is set after considering both long-term returns in the general market and long-term returns experienced by the assets in the plan. The returns on the various asset categories are blended to derive an equity and a fixed income long-term rate of return. The Corporation reviews its pension plan assumptions on an annual basis with its actuarial consultants to determine if assumptions are reasonable and adjusts the assumptions to reflect changes in future expectations. Plan Assets The Corporation’s overall investment goals for the qualified defined benefit pension plan are to maintain a portfolio of assets of appropriate liquidity and diversification; to generate investment returns (net of all operating costs) that are reasonably anticipated to maintain the plan’s fully funded status or to reduce a funding deficit, after taking into account various factors, including reasonably anticipated future contributions, expense and the interest rate sensitivity of the plan’s assets relative to that of the plan’s liabilities; and to generate investment returns (net of all operating costs) that meet or exceed a customized benchmark as defined in the plan's investment policy. Derivative instruments are permissible for hedging and transactional efficiency, but only to the extent that the derivative use enhances the efficient execution of the plan’s investment policy. The plan does not directly invest in securities issued by the Corporation and its subsidiaries. The Corporation’s target allocations for plan investments are 40 percent to 50 percent for equity securities and 50 percent to 60 percent for fixed income, including cash. Equity securities include collective investment and mutual funds and common stock. Fixed income securities include U.S. Treasury and other U.S. government agency securities, mortgage-backed securities, corporate bonds and notes, municipal bonds, collateralized mortgage obligations and money market funds. Fair Value Measurements The Corporation’s qualified defined benefit pension plan utilizes fair value measurements to record fair value adjustments and to determine fair value disclosures. The Corporation’s qualified benefit pension plan categorizes investments recorded at fair value into a three-level hierarchy, based on the markets in which the investment are traded and the reliability of the assumptions used to determine fair value. Refer to Note 1 for a description of the three-level hierarchy. Following is a description of the valuation methodologies and key inputs used to measure the fair value of the Corporation’s qualified defined benefit pension plan investments, including an indication of the level of the fair value hierarchy in which the investments are classified. Mutual funds Fair value measurement is based upon the net asset value (NAV) provided by the administrator of the fund. Mutual fund NAVs are quoted in an active market exchange, such as the New York Stock Exchange, and are included in Level 1 of the fair value hierarchy. Common stock Fair value measurement is based upon the closing price quoted in an active market exchange, such as the New York Stock Exchange. Level 1 common stock includes domestic and foreign stock and real estate investment trusts. U.S. Treasury and other U.S. government agency securities Level 1 securities include U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets. Fair value measurement is based upon quoted prices in an active market exchange, such as the New York Stock Exchange. Level 2 securities include debt securities issued by U.S. government agencies and U.S. government-sponsored entities. The fair value of Level 2 securities is determined using quoted prices of securities with similar characteristics, or pricing models based on observable market data inputs, primarily interest rates and spreads. Corporate and municipal bonds and notes Fair value measurement is based upon quoted prices of securities with similar characteristics or pricing models based on observable market data inputs, primarily interest rates, spreads and prepayment information. Level 2 securities include corporate bonds, municipal bonds, foreign bonds and foreign notes. Mortgage-backed securities Fair value measurement is based upon independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors, such as credit loss and liquidity assumptions, and are included in Level 2 of the fair value hierarchy. Private placements Fair value is measured using the NAV provided by fund management as quoted prices in active markets are not available. Management considers additional discounts to the provided NAV for market and credit risk. Private placements are included in Level 3 of the fair value hierarchy. Collective investment funds Fair value measurement is based upon the NAV provided by the administrator of the fund as a practical expedient to estimate fair value. There are no unfunded commitments or redemption restrictions on the collective investment funds. The investments are redeemable daily. Fair Values The fair values of the Corporation’s qualified defined benefit pension plan investments measured at fair value on a recurring basis at December 31, 2022 and 2021, by asset category and level within the fair value hierarchy, are detailed in the table below. (in millions) Total Level 1 Level 2 Level 3 December 31, 2022 Fixed income securities: U.S. Treasury and other U.S. government agency securities $ 534 $ 531 $ 3 $ — Corporate and municipal bonds and notes 676 — 676 — Mortgage-backed securities 20 — 20 — Private placements 39 — — 39 Total investments in the fair value hierarchy $ 1,269 $ 531 $ 699 $ 39 Investments measured at net asset value: Collective investment funds 1,230 Total investments at fair value $ 2,499 December 31, 2021 Fixed income securities: U.S. Treasury and other U.S. government agency securities $ 599 $ 595 $ 4 $ — Corporate and municipal bonds and notes 893 — 893 — Mortgage-backed securities 27 — 27 — Private placements 50 — — 50 Total investments in the fair value hierarchy $ 1,569 $ 595 $ 924 $ 50 Investments measured at net asset value: Collective investment funds 1,885 Total investments at fair value $ 3,454 The table below provides a summary of changes in the Corporation’s qualified defined benefit pension plan’s Level 3 investments measured at fair value on a recurring basis for the years ended December 31, 2022 and 2021. Balance at Balance at Net Gains (Losses) (in millions) Realized Unrealized Purchases Sales Year Ended December 31, 2022 Private placements $ 50 $ (3) $ (12) $ 38 $ (34) $ 39 Year Ended December 31, 2021 Private placements $ 58 $ 2 $ (4) $ 44 $ (50) $ 50 There were no assets in the non-qualified defined benefit pension plan at December 31, 2022 and 2021. The postretirement benefit plan is fully invested in bank-owned life insurance policies. The fair value of bank-owned life insurance policies is based on the cash surrender values of the policies as reported by the insurance companies and is classified in Level 2 of the fair value hierarchy. Cash Flows The Corporation currently expects to make no employer contributions to the qualified and non-qualified defined benefit pension plans and postretirement benefit plan for the year ended December 31, 2023. Estimated Future Benefit Payments (in millions) Years Ended December 31 Qualified Non-Qualified Postretirement 2023 $ 168 $ 14 $ 3 2024 140 15 3 2025 139 15 3 2026 143 15 2 2027 140 14 2 2028 - 2032 663 70 8 (a) Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies. Defined Contribution Plans Substantially all of the Corporation’s employees are eligible to participate in the Corporation’s principal defined contribution plan (a 401(k) plan). Under this plan, the Corporation makes core matching cash contributions of 100 percent of the first 4 percent of qualified earnings contributed by employees (up to the current IRS compensation limit), invested based on employee investment elections. Employee benefits expense included expense for the plan of $24 million for the each of the years ended December 31, 2022, 2021 and 2020. Deferred Compensation Plans The Corporation offers optional deferred compensation plans under which certain employees and non-employee directors (participants) may make an irrevocable election to defer incentive compensation and/or a portion of base salary until retirement or separation from the Corporation. The participant may direct deferred compensation into one or more deemed investment options. Although not required to do so, the Corporation invests actual funds into the deemed investments as directed by participants, resulting in a deferred compensation asset, recorded in other short-term investments on the Consolidated Balance Sheets that offsets the liability to participants under the plan, recorded in accrued expenses and other liabilities. The earnings from the deferred compensation asset are recorded in interest on short-term investments and other noninterest income and the related change in the liability to participants under the plan is recorded in salaries and benefits expense on the Consolidated Statements of Income.

Income Taxes And Tax-Related It

Income Taxes And Tax-Related Items	12 Months Ended
Income Taxes And Tax-Related Items	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes and Tax-Related Items	INCOME TAXES AND TAX-RELATED ITEMS The provision for income taxes is calculated as the sum of income taxes due for the current year and deferred taxes. Income taxes due for the current year are computed by applying federal and state tax statutes to current year taxable income. Deferred taxes arise from temporary differences between the income tax basis and financial accounting basis of assets and liabilities. Tax-related interest and penalties and foreign taxes are then added to the tax provision. The current and deferred components of the provision for income taxes were as follows: (in millions) December 31 2022 2021 2020 Current: Federal $ 296 $ 212 $ 171 Foreign 6 5 5 State and local 50 26 30 Total current 352 243 206 Deferred: Federal (24) 62 (73) State and local (3) 17 (9) Total deferred (27) 79 (82) Total $ 325 $ 322 $ 124 Income before income taxes of $1.5 billion for the year ended December 31, 2022 included $48 million of foreign taxable income. The provision for income taxes does not reflect the tax effects of unrealized gains and losses on investment securities available-for-sale, hedging transactions or the change in defined benefit pension and other postretirement plans adjustment included in accumulated other comprehensive (loss) income. Refer to Note 14 for additional information on accumulated other comprehensive (loss) income. A reconciliation of expected income tax expense at the federal statutory rate to the Corporation’s provision for income taxes and effective tax rate follows: (dollar amounts in millions) 2022 2021 2020 Years Ended December 31 Amount Rate Amount Rate Amount Rate Tax based on federal statutory rate $ 310 21.0 % $ 313 21.0 % $ 130 21.0 % State income taxes 36 2.5 35 2.4 18 2.9 Affordable housing and historic credits (13) (0.9) (13) (0.9) (12) (1.9) Bank-owned life insurance (10) (0.7) (10) (0.6) (10) (1.6) FDIC insurance expense 6 0.4 5 0.3 7 1.1 Employee stock transactions (3) (0.2) (3) (0.2) (1) (0.2) Tax-related interest and penalties — — — — (2) (0.3) Other (1) (0.1) (5) (0.4) (6) (1.0) Provision for income taxes $ 325 22.0 % $ 322 21.6 % $ 124 20.0 % The liability for tax-related interest and penalties, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $5 million and $6 million at December 31, 2022 and 2021, respectively. In the ordinary course of business, the Corporation enters into certain transactions that have tax consequences. From time to time, the Internal Revenue Service (IRS) may review and/or challenge specific interpretive tax positions taken by the Corporation with respect to those transactions. The Corporation believes that its tax returns were filed based upon applicable statutes, regulations and case law in effect at the time of the transactions. The IRS or other tax jurisdictions, an administrative authority or a court, if presented with the transactions, could disagree with the Corporation’s interpretation of the tax law. A reconciliation of the beginning and ending amount of net unrecognized tax benefits follows: (in millions) 2022 2021 2020 Balance at January 1 $ 18 $ 19 $ 17 (Decrease) increase as a result of tax positions taken during a prior period (2) 1 1 Increase as a result of tax positions taken during the current period 3 3 2 Decreases related to settlements with tax authorities (3) (3) (1) Reduction as a result of expiration of statute of limitations — (2) — Balance at December 31 $ 16 $ 18 $ 19 After consideration of the effect of the federal tax benefit available on unrecognized state tax benefits, the total amount of unrecognized tax benefits which, if recognized, would affect the Corporation’s effective tax rate was approximately $13 million and $14 million at December 31, 2022 and 2021, respectively. The following tax years for significant jurisdictions remain subject to examination as of December 31, 2022: Jurisdiction Tax Years Federal 2019-2021 New York 2018-2021 California 2006-2007, 2018-2021 The Corporation expects to enter into a settlement agreement with the California Franchise Tax Board related to open years 2006 and 2007 that will result in a change in net unrecognized tax benefits within the next twelve months. As a result of the agreement, the Corporation anticipates a favorable change of approximately $4 million in tax and $3 million in interest and penalties. Based on current knowledge and probability assessment of various potential outcomes, the Corporation believes current tax reserves are adequate, and the amount of any potential incremental liability arising is not expected to have a material adverse effect on the Corporation’s consolidated financial condition or results of operations. Probabilities and outcomes are reviewed as events unfold, and adjustments to the reserves are made when necessary. During 2022, the Corporation received a favorable ruling from the Michigan Supreme Court in its petition to the state for its tax credit transfer regarding tax years 2008 through 2011. The Corporation has recorded a non-income tax benefit of $4 million, with the expectation of another $7 million to be recognized in the following year (amounts are not inclusive of interest.) The principal components of deferred tax assets and liabilities were as follows: (in millions) December 31 2022 2021 Deferred tax assets: Allowance for depreciation $ — $ 7 Allowance for loan losses 128 124 Deferred compensation 84 71 Deferred loan origination fees and costs 12 17 Net hedging losses 290 — Net unrealized losses on investment securities available-for-sale 713 30 Operating lease liabilities 85 74 Other temporary differences, net 42 21 Total deferred tax assets before valuation allowance 1,354 344 Valuation allowance (5) (5) Total deferred tax assets 1,349 339 Deferred tax liabilities: Lease financing transactions (31) (49) Defined benefit plans (123) (198) Allowance for depreciation (4) — Net hedging gains — (17) Leasing Right of Use assets (71) (66) Total deferred tax liabilities (229) (330) Net deferred tax assets $ 1,120 $ 9

Transactions with Related Parti

Transactions with Related Parties	12 Months Ended
Transactions with Related Parties	Dec. 31, 2022
Related Party Transactions [Abstract]
Transactions with Related Parties	TRANSACTIONS WITH RELATED PARTIES The Corporation’s banking subsidiaries had, and expect to have in the future, transactions with the Corporation’s directors and executive officers, companies with which these individuals are associated and certain related individuals. Such transactions were made in the ordinary course of business and included extensions of credit, leases and professional services. With respect to extensions of credit, all were made on substantially the same terms, including interest rates and collateral, as those prevailing at the same time for comparable transactions with other customers and did not, in management’s opinion, involve more than normal risk of collectibility or present other unfavorable features. The aggregate amount of loans attributable to persons who were related parties at December 31, 2022 totaled $74 million at the beginning of 2022 and $57 million at the end of 2022. During 2022, new loans to related parties aggregated $270 million and repayments totaled $287 million.

Regulatory Capital

Regulatory Capital	12 Months Ended
Regulatory Capital	Dec. 31, 2022
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Capital	REGULATORY CAPITALBanking regulations limit the transfer of assets in the form of dividends, loans or advances from the bank subsidiaries to the parent company. Under the most restrictive of these regulations, the aggregate amount of dividends which can be paid to the parent company, with prior approval from bank regulatory agencies, approximated $506 million at January 1, 2023, plus 2023 net profits. Substantially all the assets of the Corporation’s banking subsidiaries are restricted from transfer to the parent company of the Corporation in the form of loans or advances. The Corporation’s subsidiary banks declared dividends of $1.0 billion, $852 million and $498 million in 2022, 2021 and 2020, respectively. The Corporation and its U.S. banking subsidiaries are subject to various regulatory capital requirements administered by federal and state banking agencies under the Basel III regulatory framework (Basel III). This regulatory framework establishes comprehensive methodologies for calculating regulatory capital and risk-weighted assets (RWA). Basel III also set minimum capital ratios as well as overall capital adequacy standards. Under Basel III, regulatory capital comprises Common Equity Tier 1 (CET1) capital, additional Tier 1 capital and Tier 2 capital. CET1 capital predominantly includes common shareholders' equity, less certain deductions for goodwill, intangible assets and deferred tax assets that arise from net operating losses and tax credit carry-forwards. Additionally, the Corporation has elected to permanently exclude capital in accumulated other comprehensive income (AOCI) related to debt and equity securities classified as available-for-sale as well as for cash flow hedges and defined benefit postretirement plans from CET1, an option available to standardized approach entities under Basel III. Tier 1 capital incrementally includes noncumulative perpetual preferred stock. Tier 2 capital includes Tier 1 capital as well as subordinated debt qualifying as Tier 2 and qualifying allowance for credit losses. In addition to the minimum risk-based capital requirements, the Corporation and its Bank subsidiaries are required to maintain a minimum capital conservation buffer, in the form of common equity, of 2.5 percent in order to avoid restrictions on capital distributions and discretionary bonuses. The Corporation computes RWA using the standardized approach. Under the standardized approach, RWA is generally based on supervisory risk-weightings which vary by counterparty type and asset class. Under the Basel III standardized approach, capital is required for credit risk RWA, to cover the risk of unexpected losses due to failure of a customer or counterparty to meet its financial obligations in accordance with contractual terms; and if trading assets and liabilities exceed certain thresholds, capital is also required for market risk RWA, to cover the risk of losses due to adverse market movements or from position-specific factors. Quantitative measures established by regulation to ensure capital adequacy require the maintenance of minimum amounts and ratios of CET1, Tier 1 and total capital (as defined in the regulations) to average and/or risk-weighted assets. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Corporation’s financial statements. At December 31, 2022 and 2021, the Corporation and its U.S. banking subsidiaries exceeded the ratios required for an institution to be considered “well capitalized”. For U.S. banking subsidiaries, those requirements were total risk-based capital, Tier 1 risk-based capital, CET1 risk-based capital and leverage ratios greater than 10 percent, 8 percent, 6.5 percent and 5 percent, respectively, at December 31, 2022 and 2021. For the Corporation, requirements to be considered "well capitalized" were total risk-based capital and Tier 1 risk-based capital ratios greater than 10 percent and 6 percent, respectively, at December 31, 2022 and 2021. There have been no conditions or events since December 31, 2022 that management believes have changed the capital adequacy classification of the Corporation or its U.S. banking subsidiaries. The following is a summary of the capital position of the Corporation and Comerica Bank, its principal banking subsidiary. (dollar amounts in millions) Comerica Comerica December 31, 2022 CET1 capital (minimum $3.5 billion (Consolidated)) $ 7,884 $ 7,801 Tier 1 capital (minimum $4.7 billion (Consolidated)) 8,278 7,801 Total capital (minimum $6.3 billion (Consolidated)) 9,817 9,190 Risk-weighted assets 78,871 78,781 Average assets (fourth quarter) 86,726 86,608 CET1 capital to risk-weighted assets (minimum-4.5%) 10.00 % 9.90 % Tier 1 capital to risk-weighted assets (minimum-6.0%) 10.50 9.90 Total capital to risk-weighted assets (minimum-8.0%) 12.45 11.67 Tier 1 capital to average assets (minimum-4.0%) 9.55 9.01 Capital conservation buffer (minimum-2.5%) 4.45 3.67 December 31, 2021 CET1 capital (minimum $3.1 billion (Consolidated)) $ 7,064 $ 7,634 Tier 1 capital (minimum $4.2 billion (Consolidated)) 7,458 7,634 Total capital (minimum $5.6 billion (Consolidated)) 8,608 8,584 Risk-weighted assets 69,708 69,542 Average assets (fourth quarter) 96,417 96,216 CET1 capital to risk-weighted assets (minimum-4.5%) 10.13 % 10.98 % Tier 1 capital to risk-weighted assets (minimum-6.0%) 10.70 10.98 Total capital to risk-weighted assets (minimum-8.0%) 12.35 12.34 Tier 1 capital to average assets (minimum-4.0%) 7.74 7.93 Capital conservation buffer (minimum-2.5%) 4.35 4.34

Contingent Liabilities

Contingent Liabilities	12 Months Ended
Contingent Liabilities	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	CONTINGENT LIABILITIES Legal Proceedings and Regulatory Matters The Corporation and certain of its subsidiaries are subject to various other pending or threatened legal proceedings arising out of the normal course of business or operations. The Corporation believes it has meritorious defenses to the claims asserted against it in its other currently outstanding legal proceedings and, with respect to such legal proceedings, intends to continue to defend itself vigorously, litigating or settling cases according to management’s judgment as to what is in the best interests of the Corporation and its shareholders. Settlement may result from the Corporation's determination that it may be more prudent financially to settle, rather than litigate, and should not be regarded as an admission of liability. Further, from time to time, the Corporation is also subject to examinations, inquiries and investigations by regulatory authorities in areas including, but not limited to, compliance, risk management and consumer protection, which could lead to administrative or legal proceedings or settlements. For example, the Consumer Financial Protection Bureau (“CFPB”) is investigating certain of the Corporation's practices, and the Corporation has responded and continues to respond to the CFPB. We are unable to predict the outcome of these discussions at this time. Remedies in these proceedings or settlements may include fines, penalties, restitution or alterations in the Corporation's business practices and may result in increased operating expenses or decreased revenues. On at least a quarterly basis, the Corporation assesses its potential liabilities and contingencies in connection with outstanding legal proceedings and regulatory matters utilizing the latest information available. On a case-by-case basis, accruals are established for those legal claims and regulatory matters for which it is probable that a loss will be incurred and the amount of such loss can be reasonably estimated. The actual costs of resolving these claims and regulatory matters may be substantially higher or lower than the amounts accrued. Based on current knowledge, and after consultation with legal counsel, management believes current accruals are adequate, and the amount of any incremental liability arising from these matters is not expected to have a material adverse effect on the Corporation’s consolidated financial condition, results of operations or cash flows. Legal fees of $17 million, $14 million and $17 million for the years ended December 31, 2022, 2021 and 2020, respectively, were included in other noninterest expenses on the Consolidated Statements of Income. For matters where a loss is not probable, the Corporation has not established an accrual. The Corporation believes the estimate of the aggregate range of reasonably possible losses, in excess of established accruals, for all legal proceedings and regulatory matters in which it is involved is from zero to approximately $80 million at December 31, 2022. This estimated aggregate range of reasonably possible losses is based upon currently available information for those legal proceedings and regulatory matters in which the Corporation is involved, taking into account the Corporation’s best estimate of such losses for those legal cases and regulatory matters for which such estimate can be made. For certain legal cases and regulatory matters, the Corporation does not believe that an estimate can currently be made. The Corporation’s estimate involves significant judgment, given the varying stages of the legal proceedings and regulatory matters (including the fact many are currently in preliminary stages), the existence in certain legal proceedings of multiple defendants (including the Corporation) whose share of liability has yet to be determined, the numerous yet-unresolved issues in many of the legal proceedings and regulatory matters (including issues regarding class certification and the scope of many of the claims) and the attendant uncertainty of the various potential outcomes of such legal proceedings and regulatory matters. Accordingly, the Corporation’s estimate will change from time to time, and actual losses may be more or less than the current estimate. In the event of unexpected future developments, it is possible that the ultimate resolution of these matters, if unfavorable, may be material to the Corporation's consolidated financial condition, results of operations or cash flows. For information regarding income tax contingencies, refer to Note 18.

Strategic Lines of Business

Strategic Lines of Business	12 Months Ended
Strategic Lines of Business	Dec. 31, 2022
Segment Reporting [Abstract]
Business Segment Information	STRATEGIC LINES OF BUSINESS The Corporation has strategically aligned its operations into three major business segments: the Commercial Bank, the Retail Bank and Wealth Management. These business segments are differentiated based on the type of customer and the related products and services provided. In addition to the three major business segments, the Finance Division is also reported as a segment. Business segment results are produced by the Corporation’s internal management accounting system. This system measures financial results based on the internal business unit structure of the Corporation. The performance of the business segments is not comparable with the Corporation's consolidated results and is not necessarily comparable with similar information for any other financial institution. Additionally, because of the interrelationships of the various segments, the information presented is not indicative of how the segments would perform if they operated as independent entities. The management accounting system assigns balance sheet and income statement items to each business segment using certain methodologies, which are regularly reviewed and refined. From time to time, the Corporation may make reclassifications among the segments to more appropriately reflect management's current view of the segments, and methodologies may be modified as the management accounting system is enhanced and changes occur in the organizational structure and/or product lines. For comparability purposes, amounts in all periods are based on business unit structure and methodologies in effect at December 31, 2022. Net interest income for each segment reflects the interest income generated by earning assets less interest expense on interest-bearing liabilities plus the net impact from associated internal funds transfer pricing (FTP) funding credits and charges. The FTP methodology allocates credits to each business segment for deposits and other funds provided as well as charges for loans and other assets being funded. This credit or charge is based on matching stated or implied maturities for these assets and liabilities. The FTP crediting rates on deposits and other funds provided reflect the long-term value of deposits and other funding sources based on their implied maturity. Due to the longer-term nature of implied maturities, FTP crediting rates are generally less volatile than changes in interest rates observed in the market. FTP charge rates for funding loans and other assets reflect a matched cost of funds based on the pricing and duration characteristics of the assets. As a result of applying matched funding, interest revenue for each segment resulting from loans and other assets is generally not impacted by changes in interest rates. Therefore, net interest income for each segment primarily reflects the volume of loans and other earning assets at the spread over the matched cost of funds, as well as the volume of deposits at the associated FTP crediting rates. Generally, in periods of rising interest rates, FTP charge rates for funding loans and FTP crediting rates on deposits will increase, with FTP crediting rates for deposits typically repricing at a slower pace than FTP charge rates for funding loans. For acquired loans and deposits, matched maturity funding is determined based on origination date. Accordingly, the FTP process reflects the transfer of interest rate risk exposures to the Corporate Treasury department within the Finance segment, where such exposures are centrally managed. The allowance for credit losses is allocated to the business segments based on the methodology used to estimate the consolidated allowance for credit losses described in Note 1. The related provision for credit losses is assigned based on the amount necessary to maintain an allowance for credit losses appropriate for each business segment. Noninterest income and expenses directly attributable to a line of business are assigned to that business segment. Direct expenses incurred by areas whose services support the overall Corporation are allocated to the business segments as follows: product processing expenditures are allocated based on standard unit costs applied to actual volume measurements; administrative expenses are allocated based on estimated time expended; and corporate overhead is assigned 50 percent based on the ratio of the business segment’s noninterest expenses to total noninterest expenses incurred by all business segments and 50 percent based on the ratio of the business segment’s attributed equity to total attributed equity of all business segments. Equity is attributed based on credit, operational and interest rate risks. Most of the equity attributed relates to credit risk, which is determined based on the credit score and expected remaining life of each loan, letter of credit and unused commitment recorded in the business segments. Operational risk is allocated based on loans and letters of credit, deposit balances, non-earning assets, trust assets under management, certain noninterest income items, and the nature and extent of expenses incurred by business units. Virtually all interest rate risk is assigned to Finance, as are the Corporation’s hedging activities. The following discussion provides information about the activities of each business segment. A discussion of the financial results and the factors impacting 2022 performance can be found in "Strategic Lines of Business" section of the financial review. The Commercial Bank meets the needs of small and middle market businesses, multinational corporations and governmental entities by offering various products and services including commercial loans and lines of credit, deposits, cash management, payment solutions, card services, capital market products, international trade finance, letters of credit, foreign exchange management services and loan syndication services. The Retail Bank includes a full range of personal financial services, consisting of consumer lending, consumer deposit gathering and mortgage loan origination. This business segment offers a variety of consumer products, including deposit accounts, installment loans, credit cards, student loans, home equity lines of credit and residential mortgage loans. In addition, this business segment offers a subset of commercial products and services to micro-businesses whose primary contact is through the branch network. Wealth Management offers products and services consisting of fiduciary services, private banking, retirement services, securities-based lending, investment management and advisory services, investment banking and brokerage services. This business segment also offers the sale of annuity products, as well as life, disability and long-term care insurance products. The Finance segment includes the Corporation’s securities portfolio and asset and liability management activities. This segment is responsible for managing the Corporation’s funding, liquidity and capital needs, performing interest sensitivity analysis and executing various strategies to manage the Corporation’s exposure to liquidity, interest rate risk and foreign exchange risk. The Other category includes the income and expense impact of equity and cash, tax benefits not assigned to specific business segments, charges of an unusual or infrequent nature that are not reflective of the normal operations of the business segments and miscellaneous other expenses of a corporate nature. Business segment financial results are as follows: (dollar amounts in millions) Commercial Retail Wealth Management Finance Other Total Year Ended December 31, 2022 Earnings summary: Net interest income (expense) $ 1,753 $ 680 $ 199 $ (187) $ 21 $ 2,466 Provision for credit losses 32 11 9 — 8 60 Noninterest income 607 122 298 58 (17) 1,068 Noninterest expenses 963 689 348 1 (3) 1,998 Provision (benefit) for income taxes 313 22 33 (37) (6) 325 Net income (loss) $ 1,052 $ 80 $ 107 $ (93) $ 5 $ 1,151 Net credit-related charge-offs (recoveries) $ 21 $ (1) $ (3) $ — $ — $ 17 Selected average balances: Assets $ 47,660 $ 2,814 $ 5,037 $ 20,682 $ 11,079 $ 87,272 Loans 43,481 2,063 4,906 — 10 50,460 Deposits 42,584 26,672 5,439 591 195 75,481 Statistical data: Return on average assets (a) 2.21 % 0.29 % 1.83 % n/m n/m 1.32 % Efficiency ratio (b) 40.69 85.31 70.00 n/m n/m 56.32 Year Ended December 31, 2021 Earnings summary: Net interest income (expense) $ 1,574 $ 565 $ 166 $ (471) $ 10 $ 1,844 Provision for credit losses (346) (5) (32) — (1) (384) Noninterest income 663 123 279 41 17 1,123 Noninterest expenses 870 645 317 1 28 1,861 Provision (benefit) for income taxes 384 5 36 (100) (3) 322 Net income (loss) $ 1,329 $ 43 $ 124 $ (331) $ 3 $ 1,168 Net credit-related (recoveries) charge-offs $ (12) $ 2 $ — $ — $ — $ (10) Selected average balances: Assets $ 44,004 $ 3,213 $ 5,028 $ 17,705 $ 20,202 $ 90,152 Loans 41,801 2,382 4,903 — (3) 49,083 Deposits 45,602 25,682 5,218 965 214 77,681 Statistical data: Return on average assets (a) 2.71 % 0.16 % 2.24 % n/m n/m 1.30 % Efficiency ratio (b) 38.76 92.98 71.02 n/m n/m 62.42 (Table continues on following page) (dollar amounts in millions) Commercial Bank Retail Wealth Management Finance Other Total Year Ended December 31, 2020 Earnings summary: Net interest income (expense) $ 1,605 $ 503 $ 167 $ (384) $ 20 $ 1,911 Provision for credit losses 495 7 35 — — 537 Noninterest income 555 110 263 55 18 1,001 Noninterest expenses 813 607 295 2 37 1,754 Provision (benefit) for income taxes 184 (3) 22 (78) (1) 124 Net income (loss) $ 668 $ 2 $ 78 $ (253) $ 2 $ 497 Net credit-related charge-offs $ 192 $ 1 $ 3 $ — $ — $ 196 Selected average balances: Assets $ 45,716 $ 3,281 $ 5,162 $ 15,418 $ 11,569 $ 81,146 Loans 44,119 2,468 5,045 — (1) 51,631 Deposits 36,616 22,832 4,402 1,026 162 65,038 Statistical data: Return on average assets (a) 1.46 % — % 1.51 % n/m n/m 0.61 % Efficiency ratio (b) 37.63 98.52 68.47 n/m n/m 60.13 (a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity. (b) Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net gains (losses) from securities, a derivative contract tied to the conversion rate of Visa Class B shares and changes in the value of shares obtained through monetization of warrants. n/m – not meaningful

Parent Company Financial Statem

Parent Company Financial Statements	12 Months Ended
Parent Company Financial Statements	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Parent Company Financial Statments	PARENT COMPANY FINANCIAL STATEMENTS BALANCE SHEETS - COMERICA INCORPORATED (in millions, except share data) December 31 2022 2021 Assets Cash and due from subsidiary banks $ 1,810 $ 1,105 Other short-term investments 92 113 Receivable due from subsidiary bank 150 150 Investment in subsidiaries, principally banks 4,853 8,278 Premises and equipment — 1 Accrued income and other assets 191 265 Total assets $ 7,096 $ 9,912 Liabilities and Shareholders’ Equity Medium- and long-term debt $ 1,593 $ 1,736 Accrued expenses and other liabilities 322 279 Total liabilities 1,915 2,015 Fixed-rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000 liquidation preference per share: Authorized - 4,000 shares Issued - 4,000 shares 394 394 Common stock - $5 par value: Authorized - 325,000,000 shares Issued - 228,164,824 shares 1,141 1,141 Capital surplus 2,220 2,175 Accumulated other comprehensive loss (3,742) (212) Retained earnings 11,258 10,494 Less cost of common stock in treasury - 97,197,962 shares at 12/31/2022 and 97,476,872 shares at 12/31/2021 (6,090) (6,095) Total shareholders’ equity 5,181 7,897 Total liabilities and shareholders’ equity $ 7,096 $ 9,912 STATEMENTS OF INCOME - COMERICA INCORPORATED (in millions) Years Ended December 31 2022 2021 2020 Income Income from subsidiaries: Dividends from subsidiaries $ 1,067 $ 849 $ 498 Other interest income 13 1 4 Intercompany management fees 109 235 209 Total income 1,189 1,085 711 Expenses Interest on medium- and long-term debt 47 20 30 Salaries and benefits expense 53 170 141 Other noninterest expenses 46 72 66 Total expenses 146 262 237 Income before benefit for income taxes and equity in undistributed earnings of subsidiaries 1,043 823 474 Benefit for income taxes (3) (6) (6) Income before equity in undistributed earnings of subsidiaries 1,046 829 480 Equity in undistributed earnings of subsidiaries, principally banks 105 339 17 Net income 1,151 1,168 497 Less income allocated to participating securities 6 5 2 Preferred stock dividends 23 23 13 Net income attributable to common shares $ 1,122 $ 1,140 $ 482 STATEMENTS OF CASH FLOWS - COMERICA INCORPORATED (in millions) Years Ended December 31 2022 2021 2020 Operating Activities Net income $ 1,151 $ 1,168 $ 497 Adjustments to reconcile net income to net cash provided by operating activities: Undistributed (earnings) of subsidiaries, principally banks (105) (339) (17) Net periodic defined benefit cost 2 5 4 Share-based compensation expense 22 19 11 Benefit for deferred income taxes — (2) (1) Other, net 24 3 2 Net cash provided by operating activities 1,094 854 496 Investing Activities Advance to subsidiary bank — (150) — Capital transactions with subsidiaries — — (21) Other, net 2 (1) 2 Net cash provided by (used in) investing activities 2 (151) (19) Financing Activities Preferred Stock: Issuances — — 394 Cash dividends paid (23) (23) (8) Common Stock: Repurchases (43) (729) (199) Cash dividends paid (353) (369) (375) Issuances under employee stock plans 28 34 4 Net cash used in financing activities (391) (1,087) (184) Net increase (decrease) in cash and cash equivalents 705 (384) 293 Cash and cash equivalents at beginning of period 1,105 1,489 1,196 Cash and cash equivalents at end of period $ 1,810 $ 1,105 $ 1,489 Interest paid $ 41 $ 21 $ 33

Revenue from Contracts with Cus

Revenue from Contracts with Customers	12 Months Ended
Revenue from Contracts with Customers	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue from contracts with customers comprises the noninterest income earned by the Corporation in exchange for services provided to customers. The following table presents the composition of revenue from contracts with customers, segregated from other sources of noninterest income, by business segment. Commercial Retail Wealth Management Finance & Other Total (in millions) Year Ended December 31, 2022 Revenue from contracts with customers: Card fees $ 227 $ 42 $ 4 $ — $ 273 Fiduciary income — — 233 — 233 Service charges on deposit accounts 132 57 6 — 195 Commercial loan servicing fees (a) 18 — — — 18 Brokerage fees — — 21 — 21 Other noninterest income (b) 7 16 24 1 48 Total revenue from contracts with customers 384 115 288 1 788 Other sources of noninterest income 223 7 10 40 280 Total noninterest income $ 607 $ 122 $ 298 $ 41 $ 1,068 Year Ended December 31, 2021 Revenue from contracts with customers: Card fees $ 250 $ 44 $ 4 $ — $ 298 Fiduciary income — — 231 — 231 Service charges on deposit accounts 136 54 5 — 195 Commercial loan servicing fees (a) 19 — — — 19 Brokerage fees — — 14 — 14 Other noninterest income (b) 5 17 17 — 39 Total revenue from contracts with customers 410 115 271 — 796 Other sources of noninterest income 253 8 8 58 327 Total noninterest income 663 123 279 58 1,123 Year Ended December 31, 2020 Revenue from contracts with customers: Card fees $ 229 $ 38 $ 3 $ — $ 270 Fiduciary income — — 209 — 209 Service charges on deposit accounts 128 52 5 — 185 Commercial loan servicing fees (a) 18 — — — 18 Brokerage fees — — 21 — 21 Other noninterest income (b) 28 10 17 — 55 Total revenue from contracts with customers 403 100 255 — 758 Other sources of noninterest income 152 10 8 73 243 Total noninterest income $ 555 $ 110 $ 263 $ 73 $ 1,001 (a) Included in commercial lending fees on the Consolidated Statements of Income. (b) Excludes derivative, warrant and other miscellaneous income. Revenue from contracts with customers did not generate significant contract assets and liabilities.

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2022
Leases [Abstract]
Leases [Text Block]	LEASES As a lessee, the Corporation has entered into operating leases for the majority of its real estate locations, primarily retail and office space. Total lease expense for the years ended December 31, 2022, 2021 and 2020 were as follows: (in millions) Years Ended December 31 2022 2021 2020 Operating lease expense $ 68 $ 65 $ 64 Variable lease expense 17 15 16 Less sublease income (1) (1) (1) Total lease expense $ 84 $ 79 $ 79 Supplemental balance sheet information related to leases is summarized as follows: (dollar amounts in millions) Years Ended December 31 2022 2021 2020 Included in accrued income and other assets Right-of-use (ROU) assets $ 338 $ 317 $ 306 Included in accrued expenses and other liabilities Operating lease liabilities 406 356 344 Weighted average discount rate 3.53 % 3.33 % 3.61 % Weighted average lease term in years 9 8 8 Supplemental cash flow information related to leases is summarized as follows: (in millions) Years Ended December 31 2022 2021 2020 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 66 $ 66 $ 65 ROU assets obtained in exchange for new liabilities (a) 80 64 28 (a) Includes a $24 million reduction to both ROU assets and lease liabilities for a partial termination related to the Company's Texas headquarters for the year ended December 31, 2022. As of December 31, 2022, the contractual maturities of operating lease liabilities were as follows: (in millions) Years Ending December 31 2023 $ 63 2024 69 2025 63 2026 55 2027 45 Thereafter 185 Total contractual maturities 480 Less imputed interest (74) Total operating lease liabilities $ 406 As a lessor, the Corporation leases certain types of manufacturing and warehouse equipment as well as public and private transportation vehicles to its customers. The Corporation recognized lease-related revenue, primarily interest income from sales-type and direct financing leases of $21 million, $12 million and $13 million for the years ended December 31, 2022, 2021 and 2020, respectively. The Corporation's net investment in sales-type and direct financing leases was $659 million and $464 million at December 31, 2022 and 2021, respectively. As of December 31, 2022, the contractual maturities of sales-type and direct financing lease receivables were as follows: (in millions) Years Ending December 31 2023 $ 101 2024 127 2025 137 2026 71 2027 36 Thereafter 148 Total lease payments receivable 620 Unguaranteed residual values 61 Less deferred interest income (22) Total lease receivables (a) $ 659 (a) Excludes net investment in leveraged leases of $101 million.

Basis of Presentation and Acc_2

Basis of Presentation and Accounting Policies Basis of Presentation and Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Corporation and the accounts of those subsidiaries that are majority owned and in which the Corporation has a controlling financial interest. The Corporation consolidates entities not determined to be variable interest entities (VIEs) when it holds a controlling financial interest and applies the cost or equity method when it holds less than a controlling financial interest. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies acquired are included from the date of acquisition. The Corporation holds investments in certain legal entities that are considered VIEs. In general, a VIE is an entity that either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. If any of these characteristics are present, the entity is subject to a variable interests consolidation model, and consolidation is based on variable interests, not on voting interests. Variable interests are defined as contractual ownership or other economic interests in an entity that change with fluctuations in the entity’s net asset value. The primary beneficiary, which is required to consolidate the VIE, is defined as the party that has both the power to direct the activities of the VIE that most significantly impact the entity’s economic performance and the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. The maximum potential exposure to losses relative to investments in VIEs is generally limited to the sum of the outstanding book basis and unfunded commitments for future investments. The Corporation evaluates its investments in VIEs, both at inception and when there is a change in circumstances that requires reconsideration, to determine if the Corporation is the primary beneficiary and consolidation is required. The Corporation accounts for unconsolidated VIEs using either the proportional, cost or equity method. These investments comprise investments in community development projects which generate tax credits to their investors and are included in accrued income and other assets on the Consolidated Balance Sheets. The proportional method is used for investments in affordable housing projects that qualify for the low-income housing tax credit (LIHTC). The equity method is used for other investments where the Corporation has the ability to exercise significant influence over the entity’s operation and financial policies. Other unconsolidated equity investments that do not meet the criteria to be accounted for under the equity method are accounted for under the cost method. Amortization and other write-downs of LIHTC investments are presented on a net basis as a component of the provision for income taxes, while income, amortization and write-downs from cost and equity method investments are recorded in other noninterest income on the Consolidated Statements of Income. Assets held in an agency or fiduciary capacity are not assets of the Corporation and are not included in the consolidated financial statements. See Note 9 for additional information about the Corporation’s involvement with VIEs.
Fair Value Measurements	Fair Value Measurements The Corporation utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, the Corporation uses present value techniques and other valuation methods to estimate the fair values of its financial instruments. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used. Fair value is an estimate of the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction (i.e., not a forced transaction, such as a liquidation or distressed sale) between market participants at the measurement date. Fair value is based on the assumptions market participants would use when pricing an asset or liability. Investment securities available-for-sale, derivatives, deferred compensation plans and equity securities with readily determinable fair values (primarily money market mutual funds) are recorded at fair value on a recurring basis. Additionally, from time to time, the Corporation may be required to record other assets and liabilities at fair value on a nonrecurring basis, such as impaired loans, other real estate (primarily foreclosed property), nonmarketable equity securities and certain other assets and liabilities. These nonrecurring fair value adjustments typically involve write-downs of individual assets or application of lower of cost or fair value accounting. Fair value measurements and disclosures guidance establishes a three-level fair value hierarchy based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. Fair value measurements are separately disclosed by level within the fair value hierarchy. For assets and liabilities recorded at fair value, it is the Corporation’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. Level 1 Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are less active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. The Corporation generally utilizes third-party pricing services to value Level 1 and Level 2 securities. Management reviews the methodologies and assumptions used by the third-party pricing services and evaluates the values provided, principally by comparison with other available market quotes for similar instruments and/or analysis based on internal models using available third-party market data. The Corporation may occasionally adjust certain values provided by the third-party pricing service when management believes, as the result of its review, that the adjusted price most appropriately reflects the fair value of the particular security. Fair value measurements for assets and liabilities where limited or no observable market data exists are based primarily upon estimates, often calculated based on the economic and competitive environment, the characteristics of the asset or liability and other factors. Therefore, the results cannot be determined with precision and may not be realized in an actual sale or immediate settlement of the asset or liability. Additionally, there may be inherent weaknesses in any calculation technique so that changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results of current or future values. Following are descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities recorded at fair value, as well as a description of the methods and significant assumptions used to estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring basis. The descriptions include an indication of the level of the fair value hierarchy in which the assets or liabilities are classified. Cash and due from banks, federal funds sold and interest-bearing deposits with banks Due to their short-term nature, the carrying amount of these instruments approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of these instruments as Level 1. Deferred compensation plan assets and liabilities as well as equity securities with a readily determinable fair value The Corporation holds a portfolio of securities that includes equity securities and assets held related to deferred compensation plans. Securities and associated deferred compensation plan liabilities are recorded at fair value on a recurring basis and included in other short-term investments and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets. Level 1 securities include assets related to deferred compensation plans, which are invested in mutual funds, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and other securities traded on an active exchange, such as the New York Stock Exchange. Level 2 securities include municipal bonds and mortgage-backed securities issued by U.S. government-sponsored entities and corporate debt securities. Deferred compensation plan liabilities represent the fair value of the obligation to the plan participant, which corresponds to the fair value of the invested assets. The methods used to value equity securities and deferred compensation plan assets are the same as the methods used to value investment securities, discussed below. Investment securities Investment securities available-for-sale are recorded at fair value on a recurring basis. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored entities, as well as corporate debt securities. The fair value of Level 2 securities is determined using quoted prices of securities with similar characteristics, or pricing models based on observable market data inputs, primarily interest rates, spreads and prepayment information. Securities classified as Level 3 represent securities in less liquid markets requiring significant management assumptions when determining fair value. Loans held-for-sale Loans held-for-sale, included in other short-term investments on the Consolidated Balance Sheets, are recorded at the lower of cost or fair value. Loans held-for-sale may be carried at fair value on a nonrecurring basis when fair value is less than cost. The fair value is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, the Corporation classifies both loans held-for-sale subjected to nonrecurring fair value adjustments and the estimated fair value of loans held-for sale as Level 2. Loans The Corporation does not record loans at fair value on a recurring basis. However, an individual allowance may be established for a loan that no longer shares risk characteristics with loan pools, typically collateral-dependent loans for which reserves are based on the fair value of the underlying collateral. Such loan values are reported as nonrecurring fair value measurements. Collateral values supporting individually evaluated loans are evaluated quarterly. When management determines that the fair value of the collateral requires additional adjustments, either as a result of non-current appraisal value or when there is no observable market price, the Corporation classifies the loan as Level 3. The Corporation discloses fair value estimates for loans. The estimated fair value is determined based on characteristics such as loan category, repricing features and remaining maturity, and includes prepayment and credit loss estimates. Fair values are estimated using a discounted cash flow model that employs discount rates reflecting current pricing for loans with similar maturity and risk characteristics, including credit characteristics, and the cost of equity for the portfolio at the balance sheet date. The rates take into account the expected yield curve, as well as an adjustment for prepayment risk, when applicable. The Corporation classifies the estimated fair value of loans held for investment as Level 3. Customers’ liability on acceptances outstanding and acceptances outstanding Customers' liability on acceptances outstanding is included in accrued income and other assets and acceptances outstanding are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Due to their short-term nature, the carrying amount of these instruments approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of these instruments as Level 1. Derivative assets and derivative liabilities Derivative instruments held or issued for risk management or customer-initiated activities are traded in over-the-counter markets where quoted market prices are not readily available. Fair value for over-the-counter derivative instruments is measured on a recurring basis using internally developed models primarily based on market observable inputs, such as yield curves and option volatilities. The Corporation manages credit risk on its derivative positions based on whether the derivatives are settled through a clearinghouse or bilaterally with each counterparty. For derivative positions settled on a counterparty-by-counterparty basis, the Corporation calculates credit valuation adjustments, included in the fair value of these instruments, on the basis of its relationships at the counterparty portfolio or master netting agreement level. These credit valuation adjustments are determined by applying a credit spread for the counterparty or the Corporation, as appropriate, to the total expected exposure of the derivative after considering collateral and other master netting arrangements. These adjustments, which are considered Level 3 inputs, are based on estimates of current credit spreads to evaluate the likelihood of default. When credit valuation adjustments are significant to the overall fair value of a derivative, the Corporation classifies the over-the-counter derivative valuation in Level 3 of the fair value hierarchy; otherwise, over-the-counter derivative valuations are classified in Level 2. Nonmarketable equity securities The Corporation has a portfolio of indirect (through funds) private equity and venture capital investments, included in accrued income and other assets on the Consolidated Balance Sheets. The investments are accounted for either on the cost or equity method and are individually reviewed for impairment on a quarterly basis by comparing the carrying value to the estimated fair value. These investments may be carried at fair value on a nonrecurring basis when they are deemed to be impaired and written down to fair value. Where there is not a readily determinable fair value, the Corporation estimates fair value for indirect private equity and venture capital investments based on the net asset value, as reported by the fund. The Corporation also holds restricted equity investments, primarily Federal Reserve Bank (FRB) and Federal Home Loan Bank (FHLB) stock. Restricted equity securities are not readily marketable and are recorded at cost (par value) in accrued income and other assets on the Consolidated Balance Sheets and evaluated for impairment based on the ultimate recoverability of the par value. No significant observable market data for these instruments is available. The Corporation considers the profitability and asset quality of the issuer, dividend payment history and recent redemption experience and believes its investments in FRB and FHLB stock are ultimately recoverable at par. Therefore, the carrying amount for these restricted equity investments approximates fair value. The Corporation classifies the estimated fair value of such investments as Level 1. The Corporation’s investment in FHLB stock totaled $138 million and $7 million at December 31, 2022 and 2021, and its investment in FRB stock totaled $85 million at both December 31, 2022 and 2021. Other real estate Other real estate is included in accrued income and other assets on the Consolidated Balance Sheets and includes primarily foreclosed property. Foreclosed property is initially recorded at fair value, less costs to sell, at the date of legal title transfer to the Corporation, establishing a new cost basis. Subsequently, foreclosed property is carried at the lower of cost or fair value, less costs to sell. Other real estate may be carried at fair value on a nonrecurring basis when fair value is less than cost. Fair value is based upon independent market prices, appraised value or management's estimate of the value of the property. When management determines that the fair value of other real estate requires additional adjustments, either as a result of a non-current appraisal or when there is no observable market price, the Corporation classifies the other real estate as Level 3. Deposit liabilities The estimated fair value of checking, savings and certain money market deposit accounts is represented by the amounts payable on demand. The estimated fair value of term deposits is calculated by discounting the scheduled cash flows using the period-end rates offered on these instruments. As such, the Corporation classifies the estimated fair value of deposit liabilities as Level 2. Short-term borrowings The carrying amount of federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of short-term borrowings as Level 1. Medium- and long-term debt The estimated fair value of the Corporation's medium- and long-term debt is based on quoted market values when available. If quoted market values are not available, the estimated fair value is based on the market values of debt with similar characteristics. The Corporation classifies the estimated fair value of medium- and long-term debt as Level 2. Credit-related financial instruments Credit-related financial instruments include unused commitments to extend credit and letters of credit. These instruments generate ongoing fees which are recognized over the term of the commitment. The carrying value of the deferred fees, which approximates fair value of these instruments, is included in accrued expenses and other liabilities on the Consolidated Balance Sheets. The Corporation classifies the estimated fair value of credit-related financial instruments as Level 3. For further information about fair value measurements refer to Note 2.
Other Short-Term Investments	Other Short-Term Investments Other short-term investments include deferred compensation plan assets, certificates of deposits, equity securities with a readily determinable fair value and loans held-for-sale. Deferred compensation plan assets and equity securities are carried at fair value. Realized and unrealized gains or losses are included in other noninterest income on the Consolidated Statements of Income. Loans held-for-sale, typically residential mortgages originated with the intent to sell and occasionally including other loans transferred to held-for-sale, are carried at the lower of cost or fair value. Fair value is determined in the aggregate for each portfolio. Changes in fair value and gains or losses upon sale are included in other noninterest income on the Consolidated Statements of Income.
Investment Securities	Investment Securities Debt securities are classified as trading, available-for-sale (AFS) or held-to-maturity. Trading securities are recorded at fair value, with unrealized gains and losses included in noninterest income on the Consolidated Statements of Income. AFS securities are recorded at fair value, with unrealized gains and losses, net of income taxes, reported as a separate component of other comprehensive income (OCI). Securities for which management has the intent and ability to hold to maturity are classified as held-to-maturity and recorded at amortized cost. Interest income is recognized using the interest method. All of the Corporation's investment securities are classified as AFS at December 31, 2022 and 2021. An AFS security is impaired if its fair value is less than amortized cost. Credit-related impairment is recognized as an allowance to investment securities available-for-sale on the Consolidated Balance Sheets with a corresponding adjustment to provision for credit losses on the Consolidated Statements of Income. Non-credit-related impairment is recognized as a component of OCI. If the Corporation intends to sell an impaired AFS security or more likely than not will be required to sell that security before recovering its amortized cost basis, the entire impairment amount is recognized in earnings with corresponding adjustment to the security's amortized cost basis. For certain types of AFS securities, such as U.S. Treasuries and other securities with government guarantees, the Corporation generally expects zero credit losses. The zero-loss expectation applies to all the Corporation’s securities and no allowance for credit losses was recorded on its AFS securities portfolio at December 31, 2022. Gains or losses on the sale of securities are computed based on the adjusted cost of the specific security sold. For further information on investment securities, refer to Note 3.
Loans	Loans Loans and leases originated and held for investment are recorded at the principal balance outstanding, net of unearned income, charge-offs and unamortized deferred fees and costs. Interest income is recognized on loans and leases using the interest method. The Corporation assesses all loan modifications to determine whether a restructuring constitutes a troubled debt restructuring (TDR). A restructuring is considered a TDR when a borrower is experiencing financial difficulty and the Corporation grants a concession to the borrower. TDRs on accrual status at the original contractual rate of interest are considered performing. Nonperforming TDRs include TDRs on nonaccrual status and loans which have been renegotiated to less than the original contractual rates (reduced-rate loans). Certain types of modifications related to COVID-19 that were granted during 2020 and 2021 were excluded from TDR accounting. See Note 1 in the 2021 10-K for additional information. Effective January 1, 2020, the Corporation adopted Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2020-04 "Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate
Loan Origination Fees and Costs	Loan Origination Fees and Costs Substantially all loan origination fees and costs are deferred and amortized to net interest income over the life of the related loan or over the commitment period as a yield adjustment. Net deferred income on originated loans, including unearned income and unamortized costs, fees, premiums and discounts, totaled $118 million and $102 million at December 31, 2022 and 2021, respectively. Loan fees on unused commitments and net origination fees related to loans sold are recognized in noninterest income.
Allowance for Credit Losses	Allowance for Credit Losses The allowance for credit losses includes both the allowance for loan losses and the allowance for credit losses on lending-related commitments. The Corporation disaggregates the loan portfolio into segments for purposes of determining the allowance for credit losses. These segments are based on the level at which the Corporation develops, documents and applies a systematic methodology to determine the allowance for credit losses. The Corporation's portfolio segments are business loans and retail loans. Business loans include the commercial, real estate construction, commercial mortgage, lease financing and international loan portfolios. Retail loans consist of residential mortgage and consumer loans, including home equity loans. Current expected credit losses are estimated over the contractual life of the loan portfolio, considering all available relevant information, including historical and current conditions as well as reasonable and supportable forecasts of future events. Allowance for Loan Losses The allowance for loan losses is estimated on a quarterly basis and represents management’s estimates of current expected credit losses in the Corporation’s loan portfolio. Pools of loans with similar risk characteristics are collectively evaluated while loans that no longer share risk characteristics with loan pools are evaluated individually. Collective loss estimates are determined by applying loss factors, designed to estimate current expected credit losses, to amortized cost balances over the remaining contractual life of the collectively evaluated portfolio. Loans with similar risk characteristics are aggregated into homogeneous pools. Business loans are assigned to pools based primarily on business line and the Corporation’s internal risk rating system. For retail loans, pools are based on loan type, past due status and credit scores. Loss factors are based on estimated probability of default for each pool, set to a default horizon based on contractual life, and loss given default. Historical estimates are calibrated to economic forecasts over the reasonable and supportable forecast period based on the projected performance of specific economic variables that statistically correlate with each of the probability of default and loss given default pools. At least annually, management considers different models when estimating credit losses, selecting ones that most reasonably forecast credit losses in the relevant economic environment. The calculation of current expected credit losses is inherently subjective, as it requires management to exercise judgment in determining appropriate factors used to determine the allowance. Some of the most significant factors in the quantitative allowance estimate are assigning internal risk ratings to loans, selecting the economic forecasts used to calibrate the reserve factors and determining the reasonable and supportable forecast period. • Internal Risk Ratings : Loss factors are dependent on loan risk ratings for business loans. Risk ratings are assigned at origination, based on inherent credit risk, and updated based on new information that becomes available, periodic reviews of credit quality, a change in borrower performance or modifications to lending agreements. • Economic Forecasts: Management selects economic variables it believes to be most relevant based on the composition of the loan portfolio and customer base, including forecasted levels of employment, gross domestic product, corporate bond and treasury spreads, industrial production levels, consumer and commercial real estate price indices as well as housing statistics. Different economic forecast scenarios ranging from more benign to more severe are evaluated each reporting period to forecast losses over the contractual life of the loan portfolio. • Forecast Period : Economic forecasts are applied over the period management believes it can estimate reasonable and supportable forecasts. Forecast periods may be adjusted in response to changes in the economic environment. To estimate losses for contractual periods that extend beyond the forecast horizon, the Corporation reverts to an average historical loss experience. The Corporation typically forecasts economic variables over a two-year horizon, followed by an immediate reversion to an average historical loss experience that generally incorporates a full economic cycle. Management reviews this methodology on at least an annual basis. The allowance for loan losses also includes qualitative adjustments to bring the allowance to the level management believes is appropriate based on factors that have not otherwise been fully accounted for, including adjustments for foresight risk, input imprecision and model imprecision. Foresight risk reflects the inherent imprecision in forecasting economic variables, including determining the depth and duration of economic cycles and their impact to relevant economic variables. The Corporation may make qualitative adjustments based on its evaluation of different forecast scenarios and known recent events impacting relevant economic variables. Input imprecision factors address the risk that certain model inputs may not reflect all available information including (i) risk factors that have not been fully addressed in internal risk ratings, (ii) changes in lending policies and procedures, (iii) changes in the level and quality of experience held by lending management, (iv) imprecision in the risk rating system and (v) limitations in data available for certain loan portfolios. Model imprecision considers known model limitations and model updates not yet fully reflected in the quantitative estimate. The determination of the appropriate qualitative adjustment is based on management's analysis of current and expected economic conditions and their impact to the portfolio, as well as internal credit risk movements and a qualitative assessment of the lending environment, including underwriting standards. Management recognizes the sensitivity of various assumptions made in the quantitative modeling of expected losses and may adjust reserves depending upon the level of uncertainty that currently exists in one or more assumptions. Credit losses for loans that no longer share risk characteristics with the loan pools are estimated on an individual basis. Individual credit loss estimates are typically performed for nonaccrual loans and modified loans classified as TDRs and are based on one of several methods, including the estimated fair value of the underlying collateral, observable market value of similar debt or the present value of expected cash flows. The Corporation considers certain loans to be collateral-dependent if the borrower is experiencing financial difficulty and management expects repayment for the loan to be substantially through the operation or sale of the collateral. For collateral-dependent loans, loss estimates are based on the fair value of collateral, less estimated cost to sell (if applicable). Collateral values supporting individually evaluated loans are assessed quarterly and appraisals are typically obtained at least annually. The total allowance for loan losses is sufficient to absorb expected credit losses over the contractual life of the portfolio. Unanticipated events impacting the economy, including political instability or global events affecting the U.S. economy, could cause changes to expectations for current conditions and economic forecasts that result in an unanticipated increase in the allowance. Significant increases in current portfolio exposures or changes in credit characteristics could also increase the amount of the allowance. Such events, or others of similar nature, may result in the need for additional provision for credit losses in order to maintain an allowance that complies with credit risk and accounting policies. Loans deemed uncollectible are charged off and deducted from the allowance. Recoveries on loans previously charged off are added to the allowance. Credit losses are not estimated for accrued interest receivable as interest that is deemed uncollectible is written off through interest income. Allowance for Credit Losses on Lending-Related Commitments The allowance for credit losses on lending-related commitments estimates current expected credit losses on collective pools of letters of credit and unused commitments to extend credit based on reserve factors, determined in a manner similar to business loans, multiplied by a probability of draw estimate, based on historical experience and credit risk, applied to commitment amounts. The allowance for credit losses on lending-related commitments is included in accrued expenses and other liabilities on the Consolidated Balance Sheets, with the corresponding charge included in the provision for credit losses on the Consolidated Statements of Comprehensive Income.
Nonperforming Assets	Nonperforming Assets Nonperforming assets consist of nonaccrual loans, reduced-rate loans and foreclosed property. A loan is considered past due when the contractually required principal or interest payment is not received by the specified due date or, for certain loans, when a scheduled monthly payment is past due and unpaid for 30 days or more. Business loans are generally placed on nonaccrual status when management determines full collection of principal or interest is unlikely or when principal or interest payments are 90 days past due, unless the loan is fully collateralized and in the process of collection. The past-due status of a business loan is one of many indicative factors considered in determining the collectibility of the credit. The primary driver of when the principal amount of a business loan should be fully or partially charged-off is based on a qualitative assessment of the recoverability of the principal amount from collateral and other cash flow sources. Residential mortgage and home equity loans are generally placed on nonaccrual status once they become 90 days past due and are charged off to current appraised values less costs to sell no later than 180 days past due. In addition, junior lien home equity loans less than 90 days past due are placed on nonaccrual status if they have underlying risk characteristics that place full collection of the loan in doubt, such as when the related senior lien position is identified as seriously delinquent. Residential mortgage and consumer loans in bankruptcy for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt are placed on nonaccrual status and written down to estimated collateral value, without regard to the actual payment status of the loan, and are classified as TDRs. All other consumer loans are generally placed on nonaccrual status at 90 days past due and are charged off at no later than 120 days past due, or earlier if deemed uncollectible. At the time a loan is placed on nonaccrual status, interest previously accrued but not collected is charged against current income. Principal and interest payments received on such loans are generally first applied as a reduction of principal. Income on nonaccrual loans is then recognized only to the extent that cash is received after principal has been fully repaid or future collection of principal is probable. Generally, a loan may be returned to accrual status when all delinquent principal and interest have been received and the Corporation expects repayment of the remaining contractual principal and interest, or when the loan or debt security is both well secured and in the process of collection. Foreclosed property (primarily real estate) is initially recorded at fair value, less costs to sell, at the date of legal title transfer to the Corporation and subsequently carried at the lower of cost or fair value, less estimated costs to sell. Loans are reclassified to foreclosed property upon obtaining legal title to the collateral. Independent appraisals are obtained to substantiate the fair value of foreclosed property at the time of foreclosure and updated at least annually or upon evidence of deterioration in the property’s value. At the time of foreclosure, the adjustment for the difference between the related loan balance and fair value (less estimated costs to sell) of the property acquired is charged or credited to the allowance for loan losses. Subsequent write-downs, operating expenses and losses upon sale, if any, are charged to noninterest expenses. Foreclosed property is included in accrued income and other assets on the Consolidated Balance Sheets.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation, computed using the straight-line method, is charged to occupancy expenses in the Consolidated Statements of Income over the estimated useful lives of the assets. Estimated useful lives are generally 3 years to 33 years for premises that the Corporation owns and 3 years to 8 years for furniture and equipment. Leasehold improvements are generally amortized over the terms of their respective leases or 10 years, whichever is shorter.
Operating Leases	Operating Leases Operating leases with a term greater than one year are recognized as lease liabilities, measured as the present value of unpaid lease payments for operating leases where the Corporation is the lessee, and corresponding right-of-use (ROU) assets for the right to use the leased properties. Operating lease liabilities, recorded in accrued expenses and other liabilities, reflect the Corporation’s obligation to make future lease payments, primarily for real estate locations. Lease terms typically comprise contractual terms but may include extension options reasonably certain of being exercised at lease inception for certain strategic locations such as regional headquarters. Payments are discounted using the Corporation's incremental borrowing rate, or the rate it would pay to borrow amounts equal to the lease payments over the lease term. The Corporation does not separate lease and non-lease components for contracts in which it is the lessee. ROU assets, recorded in accrued income and other assets, are measured based on lease liabilities adjusted for incentives as well as accrued and prepaid rent. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are recognized as incurred. Common area maintenance and other executory costs are the main components of variable lease payments. Operating and variable lease expenses are recorded in net occupancy expense on the Consolidated Statements of Income.
Software	Software Capitalized software, stated at cost less accumulated amortization, includes purchased software and capitalizable application development costs associated with internally developed software and cloud computing arrangements, including capitalizable implementation costs associated with hosting arrangements that are service contracts. Cloud computing arrangements include software as a service (SaaS), platform as a service (PaaS), infrastructure as a service (IaaS) and other similar hosting arrangements. The Corporation primarily utilizes SaaS and IaaS arrangements. Capitalized implementation costs of hosting arrangements that are service contracts were $32 million at December 31, 2022, which included accumulated depreciation related to these costs of $3 million. Capitalized implementation costs of hosting arrangements that are service contracts were $21 million at December 31, 2021, which included accumulated depreciation related to these costs of $3 million.
Goodwill and Core Deposit Intangibles	Goodwill and Core Deposit Intangibles Goodwill, included in accrued income and other assets on the Consolidated Balance Sheets, is initially recorded as the excess of the purchase price over the fair value of net assets acquired in a business combination and is subsequently evaluated at least annually for impairment. Goodwill impairment testing is performed at the reporting unit level, equivalent to a business segment or one level below. The Corporation has three reporting units: the Commercial Bank, the Retail Bank and Wealth Management. The Corporation performs its annual evaluation of goodwill impairment in the third quarter of each year and may elect to perform a quantitative impairment analysis or first conduct a qualitative analysis to determine if a quantitative analysis is necessary. Additionally, the Corporation evaluates goodwill impairment on an interim basis if events or changes in circumstances between annual tests indicate additional testing may be warranted to determine if goodwill might be impaired. Factors considered in the assessment of the likelihood of impairment include macroeconomic conditions, industry and market considerations, stock performance of the Corporation and its peers, financial performance of the reporting units, and previous results of goodwill impairment tests, amongst other factors. Based on the results of the qualitative analysis, the Corporation determines whether a quantitative test is necessary. The quantitative test compares the estimated fair value of identified reporting units with their carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than the carrying value, an impairment charge would be recorded for the excess, not to exceed the amount of goodwill allocated to the reporting unit. Core deposit intangibles are amortized on an accelerated basis, based on the estimated period the economic benefits are expected to be received. Core deposit intangibles are reviewed for impairment when events or changes in circumstances indicate that their carrying amounts may not be recoverable. Impairment for a finite-lived intangible asset exists if its carrying value exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. Additional information regarding goodwill and core deposit intangibles can be found in Note 7.
Nonmarketable Equity Securities	Nonmarketable Equity Securities The Corporation has certain investments that are not readily marketable. These investments include a portfolio of investments in indirect private equity and venture capital funds and restricted equity investments, which are securities the Corporation is required to hold for various reasons, primarily Federal Home Loan Bank of Dallas (FHLB) and Federal Reserve Bank (FRB) stock. These investments are accounted for on the cost or equity method and are included in accrued income and other assets on the Consolidated Balance Sheets. The investments are individually reviewed for impairment on a quarterly basis. Indirect private equity and venture capital funds are evaluated for impairment by comparing the carrying value to the estimated fair value. Impairment is charged to current earnings and the carrying value of the investment is written down accordingly. FHLB and FRB stock are recorded at cost (par value) and evaluated for impairment based on the ultimate recoverability of the par value. If the Corporation does not expect to recover the full par value, the amount by which the par value exceeds the ultimately recoverable value would be charged to current earnings and the carrying value of the investment would be written down accordingly.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities Derivative instruments are carried at fair value in either accrued income and other assets or accrued expenses and other liabilities on the Consolidated Balance Sheets. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument is determined by whether it has been designated and qualifies as part of a hedging relationship and, further, by the type of hedging relationship. The Corporation presents derivative instruments at fair value on the Consolidated Balance Sheets on a net basis when a right of offset exists, based on transactions with a single counterparty and any cash collateral paid to and/or received from that counterparty for derivative contracts that are subject to legally enforceable master netting arrangements. For derivative instruments designated and qualifying as fair value hedges (i.e., hedging the exposure to changes in the fair value of an asset or a liability or an identified portion thereof that is attributable to a particular risk), the gain or loss on the derivative instrument, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, are recognized in the same consolidated statement of income line that is used to present the earnings effect of the hedged item during the period of the change in fair values. For derivative instruments that are designated and qualify as cash flow hedges (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the gain or loss on the derivative instrument is reported as a component of other comprehensive income and reclassified into earnings in the same consolidated statement of income line item as the earnings effect of the hedged item in the same period or periods during which the hedged transaction affects earnings. For derivative instruments not designated as hedging instruments, the gain or loss is recognized in current earnings during the period of change. To qualify for the use of hedge accounting, a derivative must be effective at inception and expected to be continuously effective in offsetting the risk being hedged. For derivatives designated as hedging instruments at inception, the Corporation uses either the short-cut method or applies statistical regression analysis to assess effectiveness. The short-cut method is used for $2.6 billion of notional of fair value hedges of medium- and long-term debt. This method allows for the assumption of perfect effectiveness and eliminates the requirement to further assess hedge effectiveness on these transactions. For hedge relationships to which the Corporation does not apply the short-cut method, statistical regression analysis is used at inception to assess whether the derivative used is expected to be highly effective in offsetting changes in the fair value or cash flows of the hedged item. A statistical regression or qualitative analysis is performed at each reporting period thereafter to evaluate hedge effectiveness. Topic 848 provided optional provisions to minimize the impact of reference rate reform to qualifying fair value and cash flow hedging relationships by allowing certain hedge accounting requirements to be suspended during the transition period. The Corporation has elected various provisions to transition its hedging relationships away from LIBOR. For further information on Topic 848, refer to the "Loans" policy in this Note. Further information on the Corporation’s derivative instruments and hedging activities is included in Note 8.
Short-Term Borrowings	Short-Term Borrowings Securities sold under agreements to repurchase are treated as collateralized borrowings and are recorded at amounts equal to the cash received. The contractual terms of the agreements to repurchase may require the Corporation to provide additional collateral if the fair value of the securities underlying the borrowings declines during the term of the agreement.
Financial Guarantees	Financial Guarantees Certain guarantee contracts or indemnification agreements that contingently require the Corporation, as guarantor, to make payments to the guaranteed party are initially measured at fair value and included in accrued expenses and other liabilities on the Consolidated Balance Sheets. The subsequent accounting for the liability depends on the nature of the underlying guarantee. The release from risk is accounted for under a particular guarantee when the guarantee expires or is settled, or by a systematic and rational amortization method. Further information on the Corporation’s obligations under guarantees is included in Note 8.
Share-Based Compensation	Share-Based Compensation The Corporation recognizes share-based compensation expense using the straight-line method over the requisite service period for all stock awards, including those with graded vesting. The requisite service period is the period an employee is required to provide service in order to vest in the award, which cannot extend beyond the date at which the employee is no longer required to perform any service to receive the share-based compensation (i.e., the retirement-eligible date). Forfeiture of stock awards and dividend equivalents are accounted for as they occur. Certain awards are contingent upon performance and/or market conditions, which affect the number of shares ultimately issued. The Corporation periodically evaluates the probable outcome of the performance conditions and makes cumulative adjustments to compensation expense as appropriate. Market conditions are included in the determination of the fair value of the award on the date of grant. Subsequent to the grant date, market conditions have no impact on the amount of compensation expense the Corporation will recognize over the life of the award. Further information on the Corporation’s share-based compensation plans is included in Note 16.
Revenue Recognition	Revenue Recognition Revenue from contracts with customers comprises the noninterest income earned by the Corporation in exchange for services provided to customers and is recognized when services are completed or as they are rendered, although contracts are generally short-term by nature. Services provided over a period of time are typically transferred to customers evenly over the term of the contracts and revenue is recognized accordingly over the period services are provided. Contract receivables are included in accrued income and other assets on the Consolidated Balance Sheets. Payment terms vary by services offered, and the time between completion of performance obligations and payment is typically not significant. Card Fees Card fees comprise interchange and other fee income earned on government card, commercial card, debit/automated teller machine card and merchant payment processing programs. Card fees are presented net of network costs, as performance obligations for card services are limited to transaction processing and settlement with the card network on behalf of the customers. Fees for these services are primarily based on interchange rates set by the network and transaction volume. The Corporation also provides ongoing card program support services, for which fees are based on contractually agreed-upon prices and customer demand for services. Service Charges on Deposit Accounts Service charges on deposit accounts comprise charges on retail and business accounts, including fees for treasury management services. Treasury management services include transaction-based services related to payment processing, overdrafts, non-sufficient funds and other deposit account activity, as well as account management services that are provided over time. Business customers can earn credits depending on deposit balances maintained with the Corporation, which may be used to offset fees. Fees and credits are based on predetermined, agreed-upon rates. Fiduciary Income Fiduciary income includes fees and commissions from asset management, custody, recordkeeping, investment advisory and other services provided primarily to personal and institutional trust customers. Revenue is recognized as the services are performed and is based either on the market value of the assets managed or the services provided, as well as agreed-upon rates. Commercial Lending Fees Commercial lending fees include both revenue from contracts with customers (primarily loan servicing fees) and other sources of revenue. Commercial loan servicing fees are based on contractually agreed-upon prices and when the services are provided. Other sources of revenue in commercial lending fees primarily include fees assessed on the unused portion of commercial lines of credit (unused commitment fees) and syndication arrangements. Brokerage Fees Brokerage fees are commissions earned for facilitating securities transactions for customers, as well as other brokerage services provided. Revenue is recognized when services are completed and is based on the type of services provided and agreed-upon rates. The Corporation pays commissions based on brokerage fee revenue. These are typically recognized when incurred because the amortization period is one year or less and are included in salaries and benefits expense on the Consolidated Statements of Income. Other Revenues Other revenues, consisting primarily of other retail fees, investment banking fees and insurance commissions, are typically recognized when services or transactions are completed and are based on the type of services provided and agreed-upon rates. Except as discussed above, commissions and other incentives paid to employees are generally based on several internal and external metrics and, as a result, are not solely dependent on revenue generating activities.
Defined Benefit Pension and Other Postretirement Costs	Defined Benefit Pension and Other Postretirement Costs Defined benefit pension costs are funded consistent with the requirements of federal laws and regulations. Inherent in the determination of defined benefit pension costs are assumptions concerning future events that will affect the amount and timing of required benefit payments under the plans. These include demographic assumptions such as retirement age and mortality, a compensation rate increase, a discount rate used to determine the current benefit obligation, form of payment election and a long-term expected rate of return on plan assets. Net periodic defined benefit pension expense includes service cost, interest cost based on the assumed discount rate, an expected return on plan assets based on an actuarially derived market-related value of assets (MRVA), amortization of prior service cost or credit and amortization of net actuarial gains or losses. The MRVA for fixed income securities and private placement assets is based on the fair value of plan assets, whereas the MRVA for other plan assets is determined by amortizing the current year’s investment gains and losses (the actual investment return net of the expected investment return) over 5 years. The amortization adjustment cannot exceed 10 percent of the fair value of assets. Prior service costs or credits include the impact of plan amendments on the liabilities and are amortized over the future service periods of active employees expected to receive benefits under the plan. Actuarial gains and losses result from experience different from that assumed and from changes in assumptions (excluding asset gains and losses not yet reflected in market-related value). Amortization of actuarial gains and losses is included as a component of net periodic defined benefit pension cost for a year if the actuarial net gain or loss exceeds 10 percent of the greater of the projected benefit obligation or the market-related value of plan assets. If amortization is required, the excess is amortized over the average remaining service period of participating employees expected to receive benefits under the plan. Service costs are included in salaries and benefits expense, while the other components of net periodic defined benefit pension expense are included in other noninterest expenses on the Consolidated Statements of Income. Postretirement benefit costs includes service cost, interest cost based on the assumed discount rate, an expected return on plan assets based on an actuarially derived MRVA, amortization of prior service cost or credit and amortization of net actuarial gains or losses. The components of postretirement benefit costs follow similar policies and methodologies as defined benefit pensions costs. Postretirement benefits are recognized in other noninterest expenses on the Consolidated Statements of Income. See Note 17 for further information regarding the Corporation’s defined benefit pension and other postretirement plans.
Income Taxes	Income Taxes The provision for income taxes is the sum of income taxes due for the current year and deferred taxes. The Corporation classifies interest and penalties on income tax liabilities and excess tax benefits and deficiencies resulting from employee stock awards in the provision for income taxes on the Consolidated Statements of Income. Deferred taxes arise from temporary differences between the income tax basis and financial accounting basis of assets and liabilities. Deferred tax assets are evaluated for realization based on available evidence of projected future reversals of existing taxable temporary differences, foreign tax credit limitations, assumptions made regarding future events and, when applicable, state loss carryback capacity. A valuation allowance is provided when it is more likely than not that some portion of the deferred tax asset will not be realized.
Earnings Per Share	Earnings Per Share Basic net income per common share is calculated using the two-class method. The two-class method is an earnings allocation formula that determines earnings per share for each share of common stock and participating securities according to dividends declared (distributed earnings) and participation rights in undistributed earnings. Distributed and undistributed earnings are allocated between common and participating security shareholders based on their respective rights to receive dividends. Nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents are considered participating securities (e.g., certain service-based restricted stock units). Undistributed net losses are not allocated to nonvested restricted shareholders, as these shareholders do not have a contractual obligation to fund the losses incurred by the Corporation. Net income attributable to common shares is then divided by the weighted-average number of common shares outstanding during the period. Diluted net income per common share is calculated using the more dilutive of either the treasury method or the two-class method. The dilutive calculation considers common stock issuable under the assumed exercise of stock options and warrants, as well as service- and performance-based restricted stock units granted under the Corporation’s stock plans using the treasury stock method, if dilutive. Net income attributable to common shares is then divided by the total of weighted-average number of common shares and common stock equivalents outstanding during the period.
Statements Of Cash Flows	Statements of Cash FlowsCash and cash equivalents are defined as those amounts included in cash and due from banks and interest-bearing deposits with banks on the Consolidated Balance Sheets.
Comprehensive (Loss) Income	Comprehensive (Loss) IncomeThe Corporation presents on an annual basis the components of net income and other comprehensive income in two separate, but consecutive statements and presents on an interim basis the components of net income and a total for comprehensive income in one continuous consolidated statement of comprehensive income.
Pending Accounting Pronouncements	Pending Accounting Pronouncements In March 2022, the FASB issued ASU No. 2022-02, "Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures" (ASU 2022-02), which eliminates the accounting for troubled debt restructurings (TDR) while expanding modification and vintage disclosure requirements. The update requires additional disclosures on the nature, magnitude and subsequent performance of certain types of modifications with borrowers experiencing financial difficulties. ASU 2022-02 further included a requirement to disclose gross charge-offs incurred by year of origination of the related loan or lease. The standard update is effective for the Corporation on January 1, 2023, and must be applied prospectively, except that the recognition and measurement of TDRs may be applied using a modified retrospective approach. Early adoption is permitted. The Corporation adopted ASU 2022-02 prospectively on January 1, 2023 and will update its disclosures in the first quarter of 2023. The update is not expected to have a material impact to the Corporation's financial condition or results of operations upon adoption.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Assets And Liabilities Recorded At Fair Value On A Recurring Basis	The following tables present the recorded amount of assets and liabilities measured at fair value on a recurring basis as of December 31, 2022 and 2021. (in millions) Total Level 1 Level 2 Level 3 December 31, 2022 Deferred compensation plan assets $ 92 $ 92 $ — $ — Equity securities 44 44 — — Investment securities available-for-sale: U.S. Treasury securities 2,664 2,664 — — Residential mortgage-backed securities (a) 11,655 — 11,655 — Commercial mortgage-backed securities (a) 4,693 — 4,693 — Total investment securities available-for-sale 19,012 2,664 16,348 — Derivative assets: Interest rate contracts 206 — 206 — Energy contracts 1,020 — 1,020 — Foreign exchange contracts 53 — 53 — Total derivative assets 1,279 — 1,279 — Total assets at fair value $ 20,427 $ 2,800 $ 17,627 $ — Derivative liabilities: Interest rate contracts $ 644 $ — $ 644 $ — Energy contracts 1,006 — 1,006 — Foreign exchange contracts 45 — 45 — Other financial derivative 12 — — 12 Total derivative liabilities 1,707 — 1,695 12 Deferred compensation plan liabilities 92 92 — — Total liabilities at fair value $ 1,799 $ 92 $ 1,695 $ 12 December 31, 2021 Deferred compensation plan assets $ 113 $ 113 $ — $ — Equity securities 62 62 — — Investment securities available-for-sale: U.S. Treasury securities 2,993 2,993 — — Residential mortgage-backed securities (a) 13,288 — 13,288 — Commercial mortgage-backed securities (a) 705 — 705 — Total investment securities available-for-sale 16,986 2,993 13,993 — Derivative assets: Interest rate contracts 239 — 213 26 Energy contracts 670 — 670 — Foreign exchange contracts 19 — 19 — Total derivative assets 928 — 902 26 Total assets at fair value $ 18,089 $ 3,168 $ 14,895 $ 26 Derivative liabilities: Interest rate contracts $ 69 $ — $ 69 $ — Energy contracts 662 — 662 — Foreign exchange contracts 16 — 16 — Other financial derivative 13 — — 13 Total derivative liabilities 760 — 747 13 Deferred compensation plan liabilities 113 113 — — Total liabilities at fair value $ 873 $ 113 $ 747 $ 13 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis	The following table summarizes the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2022 and 2021. Net Realized/Unrealized Gains (Losses) (Pretax) Recorded in Earnings (a) Balance at Beginning of Period Settlements Balance at End of Period (in millions) Realized Unrealized Year Ended December 31, 2022 Derivative assets: Interest rate contracts $ 26 $ — $ — $ (26) $ — Derivative liabilities: Other financial derivative (13) — 1 — (12) Year Ended December 31, 2021 Derivative assets: Interest rate contracts $ 39 — $ (13) — $ 26 Derivative liabilities: Other financial derivative (11) — (2) — (13) (a) Realized and unrealized gains and losses due to changes in fair value recorded in other noninterest income on the Consolidated Statements of Income.
Assets And Liabilities Recorded At Fair Value On A Nonrecurring Basis	The following table presents assets recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021. No liabilities were recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021. (in millions) Level 3 December 31, 2022 Loans: Commercial $ 53 Real estate construction 2 Commercial mortgage 11 Total loans $ 66 Other real estate 9 Total assets at fair value $ 75 December 31, 2021 Loans: Commercial $ 125 Real estate construction 4 Commercial mortgage 17 International 4 Total assets at fair value $ 150
Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value In Their Entirety On A Recurring Basis	The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a recurring basis on the Corporation’s Consolidated Balance Sheets are as follows: Carrying Estimated Fair Value (in millions) Total Level 1 Level 2 Level 3 December 31, 2022 Assets Cash and due from banks $ 1,758 $ 1,758 $ 1,758 $ — $ — Interest-bearing deposits with banks 4,524 4,524 4,524 — — Other short-term investments 19 19 19 — — Loans held-for-sale 2 2 — 2 — Total loans, net of allowance for loan losses (a) 52,792 50,964 — — 50,964 Customers’ liability on acceptances outstanding 3 3 3 — — Restricted equity investments 223 223 223 — — Nonmarketable equity securities (b) 5 12 Liabilities Demand deposits (noninterest-bearing) 39,945 39,945 — 39,945 — Interest-bearing deposits 29,566 29,566 — 29,566 — Customer certificates of deposit 1,762 1,719 — 1,719 — Other time deposits 124 124 — 124 — Total deposits 71,397 71,354 — 71,354 — Short-term borrowings 3,211 3,211 3,211 — — Acceptances outstanding 3 3 3 — — Medium- and long-term debt 3,024 3,071 — 3,071 — Credit-related financial instruments (79) (79) — — (79) December 31, 2021 Assets Cash and due from banks $ 1,236 $ 1,236 $ 1,236 $ — $ — Interest-bearing deposits with banks 21,443 21,443 21,443 — — Other short-term investments 16 16 16 — — Loans held-for-sale 6 6 — 6 — Total loans, net of allowance for loan losses (a) 48,697 49,127 — — 49,127 Customers’ liability on acceptances outstanding 5 5 5 — — Restricted equity investments 92 92 92 — — Nonmarketable equity securities (b) 5 10 Liabilities Demand deposits (noninterest-bearing) 45,800 45,800 — 45,800 — Interest-bearing deposits 34,566 34,566 — 34,566 — Customer certificates of deposit 1,973 1,968 — 1,968 — Total deposits 82,339 82,334 — 82,334 — Acceptances outstanding 5 5 5 — — Medium- and long-term debt 2,796 2,854 — 2,854 — Credit-related financial instruments (59) (59) — — (59) (a) Included $66 million and $150 million of loans recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021, respectively. (b) Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
Investment Securities (Tables)	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Summary Of Investment Securities	A summary of the Corporation’s investment securities follows: (in millions) Amortized Gross Gross Fair Value December 31, 2022 Investment securities available-for-sale: U.S. Treasury securities $ 2,810 $ — $ 146 $ 2,664 Residential mortgage-backed securities (a) 13,983 — 2,328 11,655 Commercial mortgage-backed securities (a) 5,252 — 559 4,693 Total investment securities available-for-sale $ 22,045 $ — $ 3,033 $ 19,012 December 31, 2021 Investment securities available-for-sale: U.S. Treasury securities $ 3,010 $ 22 $ 39 $ 2,993 Residential mortgage-backed securities (a) 13,397 67 176 13,288 Commercial mortgage-backed securities (a) 709 2 6 705 Total investment securities available-for-sale $ 17,116 $ 91 $ 221 $ 16,986 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
Summary Of Investment Securities In Unrealized Loss Positions	A summary of the Corporation’s investment securities in an unrealized loss position as of December 31, 2022 and 2021 follows: Less than 12 Months 12 Months or more Total (in millions) Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2022 U.S. Treasury securities $ 996 $ 5 $ 1,668 $ 141 $ 2,664 $ 146 Residential mortgage-backed securities (a) 3,500 361 8,153 1,967 11,653 2,328 Commercial mortgage-backed securities (a) 4,008 405 685 154 4,693 559 Total temporarily impaired securities $ 8,504 $ 771 $ 10,506 $ 2,262 $ 19,010 $ 3,033 December 31, 2021 U.S. Treasury securities $ 465 $ 6 $ 1,334 $ 33 $ 1,799 $ 39 Residential mortgage-backed securities (a) 7,197 128 1,128 48 8,325 176 Commercial mortgage-backed securities (a) 346 6 — — 346 6 Total temporarily impaired securities $ 8,008 $ 140 $ 2,462 $ 81 $ 10,470 $ 221 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
Contractual Maturity Distribution Of Debt Securities	The following table summarizes the amortized cost and fair values of investment securities by contractual maturity. Securities with multiple maturity dates are classified in the period of final maturity. The actual cash flows of mortgage-backed securities may differ as borrowers of the underlying loans may exercise prepayment options. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. (in millions) December 31, 2022 Amortized Cost Fair Value Contractual maturity Within one year $ 1,103 $ 1,093 After one year through five years 1,943 1,797 After five years through ten years 5,518 4,946 After ten years 13,481 11,176 Total investment securities $ 22,045 $ 19,012

Credit Quality And Allowance _2

Credit Quality And Allowance For Credit Losses (Tables)	12 Months Ended
Credit Quality And Allowance For Credit Losses (Tables)	Dec. 31, 2022
Credit Quality And Allowance For Credit Losses [Abstract]
Aging Analysis Of Loans	The following table presents an aging analysis of the amortized cost basis of loans. Loans Past Due and Still Accruing (in millions) 30-59 60-89 90 Days Total Nonaccrual Current Total December 31, 2022 Business loans: Commercial $ 238 $ 13 $ 20 $ 271 $ 142 $ 30,496 $ 30,909 Real estate construction: Commercial Real Estate business line (b) — — — — — 2,505 2,505 Other business lines (c) 2 — — 2 3 595 600 Total real estate construction 2 — — 2 3 3,100 3,105 Commercial mortgage: Commercial Real Estate business line (b) — 6 — 6 1 4,674 4,681 Other business lines (c) 64 5 3 72 22 8,531 8,625 Total commercial mortgage 64 11 3 78 23 13,205 13,306 Lease financing 6 — — 6 — 754 760 International — 9 — 9 3 1,185 1,197 Total business loans 310 33 23 366 171 48,740 49,277 Retail loans: Residential mortgage 22 — — 22 53 1,739 1,814 Consumer: Home equity 4 3 — 7 15 1,754 1,776 Other consumer 5 1 — 6 1 528 535 Total consumer 9 4 — 13 16 2,282 2,311 Total retail loans 31 4 — 35 69 4,021 4,125 Total loans $ 341 $ 37 $ 23 $ 401 $ 240 $ 52,761 $ 53,402 December 31, 2021 Business loans: Commercial $ 35 $ 18 $ 6 $ 59 $ 173 $ 29,134 $ 29,366 Real estate construction: Commercial Real Estate business line (b) — — — — — 2,391 2,391 Other business lines (c) 15 1 — 16 6 535 557 Total real estate construction 15 1 — 16 6 2,926 2,948 Commercial mortgage: Commercial Real Estate business line (b) — — — — 1 3,337 3,338 Other business lines (c) 18 4 16 38 31 7,848 7,917 Total commercial mortgage 18 4 16 38 32 11,185 11,255 Lease financing 5 — — 5 — 635 640 International 5 8 1 14 5 1,189 1,208 Total business loans 78 31 23 132 216 45,069 45,417 Retail loans: Residential mortgage 4 — — 4 36 1,731 1,771 Consumer: Home equity 4 3 — 7 12 1,514 1,533 Other consumer 32 1 4 37 — 527 564 Total consumer 36 4 4 44 12 2,041 2,097 Total retail loans 40 4 4 48 48 3,772 3,868 Total loans $ 118 $ 35 $ 27 $ 180 $ 264 $ 48,841 $ 49,285 (a) Includes $22 million of loans with deferred payments not considered past due in accordance with the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) at December 31, 2021. (b) Primarily loans to real estate developers. (c) Primarily loans secured by owner-occupied real estate.
Loans By Credit Quality Indicator and Vintage Year	The following table presents loans by credit quality indicator (CQI) and vintage year. CQI is based on internal risk ratings assigned to each business loan at the time of approval and subjected to subsequent reviews, generally at least annually, and to pools of retail loans with similar risk characteristics. Vintage year is the year of origination or major modification. December 31, 2022 Vintage Year (in millions) 2022 2021 2020 2019 2018 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 3,946 (b) $ 3,509 (b) $ 917 (b) $ 1,041 $ 598 $ 1,030 $ 18,604 $ 9 $ 29,654 Criticized (c) 75 274 81 69 45 78 632 1 1,255 Total commercial 4,021 3,783 998 1,110 643 1,108 19,236 10 30,909 Real estate construction Pass (a) 836 1,134 633 162 102 28 207 — 3,102 Criticized (c) — — 3 — — — — — 3 Total real estate construction 836 1,134 636 162 102 28 207 — 3,105 Commercial mortgage Pass (a) 3,349 2,501 1,825 1,394 1,050 2,182 838 — 13,139 Criticized (c) 7 5 7 32 31 75 10 — 167 Total commercial mortgage 3,356 2,506 1,832 1,426 1,081 2,257 848 — 13,306 Lease financing Pass (a) 316 140 64 47 37 130 — — 734 Criticized (c) 10 — 2 8 5 1 — — 26 Total lease financing 326 140 66 55 42 131 — — 760 International Pass (a) 317 161 55 88 19 14 498 — 1,152 Criticized (c) 12 — 3 — 3 10 17 — 45 Total international 329 161 58 88 22 24 515 — 1,197 Total business loans 8,868 7,724 3,590 2,841 1,890 3,548 20,806 10 49,277 Retail loans: Residential mortgage Pass (a) 327 398 480 133 68 355 — — 1,761 Criticized (c) 4 — — 9 1 39 — — 53 Total residential mortgage 331 398 480 142 69 394 — — 1,814 Consumer: Home equity Pass (a) — — — — — 9 1,708 40 1,757 Criticized (c) — — — — — — 17 2 19 Total home equity — — — — — 9 1,725 42 1,776 Other consumer Pass (a) 69 38 50 8 1 10 355 — 531 Criticized (c) — — — 1 — — 3 — 4 Total other consumer 69 38 50 9 1 10 358 — 535 Total consumer 69 38 50 9 1 19 2,083 42 2,311 Total retail loans 400 436 530 151 70 413 2,083 42 4,125 Total loans $ 9,268 $ 8,160 $ 4,120 $ 2,992 $ 1,960 $ 3,961 $ 22,889 $ 52 $ 53,402 Table continues on the following page. December 31, 2021 Vintage Year 2021 2020 2019 2018 2017 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 5,270 (b) $ 1,740 (b) $ 1,528 $ 947 $ 713 $ 763 $ 17,241 $ 10 $ 28,212 Criticized (c) 101 120 105 86 26 94 620 2 1,154 Total commercial 5,371 1,860 1,633 1,033 739 857 17,861 12 29,366 Real estate construction: Pass (a) 458 858 849 424 158 34 132 — 2,913 Criticized (c) — 3 — 13 8 8 3 — 35 Total real estate construction 458 861 849 437 166 42 135 — 2,948 Commercial mortgage: Pass (a) 2,491 1,932 1,444 1,343 1,018 2,298 481 — 11,007 Criticized (c) 17 44 50 22 23 87 5 — 248 Total commercial mortgage 2,508 1,976 1,494 1,365 1,041 2,385 486 — 11,255 Lease financing Pass (a) 166 88 97 50 38 179 — — 618 Criticized (c) — 2 10 8 1 1 — — 22 Total lease financing 166 90 107 58 39 180 — — 640 International Pass (a) 381 141 103 29 1 16 480 — 1,151 Criticized (c) 20 10 3 5 4 8 7 — 57 Total international 401 151 106 34 5 24 487 — 1,208 Total business loans 8,904 4,938 4,189 2,927 1,990 3,488 18,969 12 45,417 Retail loans: Residential mortgage Pass (a) 443 527 164 83 111 407 — — 1,735 Criticized (c) 5 — 1 2 7 21 — — 36 Total residential mortgage 448 527 165 85 118 428 — — 1,771 Consumer: Home equity Pass (a) — — — — — 11 1,460 45 1,516 Criticized (c) — — — — — 1 12 4 17 Total home equity — — — — — 12 1,472 49 1,533 Other consumer Pass (a) 101 68 13 9 1 31 337 — 560 Criticized (c) — — — — — — 4 — 4 Total other consumer 101 68 13 9 1 31 341 — 564 Total consumer 101 68 13 9 1 43 1,813 49 2,097 Total retail loans 549 595 178 94 119 471 1,813 49 3,868 Total loans $ 9,453 $ 5,533 $ 4,367 $ 3,021 $ 2,109 $ 3,959 $ 20,782 $ 61 $ 49,285 (a) Includes all loans not included in the categories of special mention, substandard or nonaccrual. (b) Includes Small Business Administration Paycheck Protection Program (PPP) loans of $35 million and $459 million at December 31, 2022 and 2021, respectively. (c) Includes loans with an internal rating of special mention, substandard loans for which the accrual of interest has not been discontinued and nonaccrual loans. Special mention loans have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. Accruing substandard loans have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans are also distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies. These categories are generally consistent with the "special mention" and "substandard" categories as defined by regulatory authorities. A minority of nonaccrual loans are consistent with the "doubtful" category.
Changes In The Allowance For Loan Losses	The following table details the changes in the allowance for credit losses. 2022 2021 2020 (in millions) Business Loans Retail Loans Total Business Loans Retail Loans Total Business Loans Retail Loans Total Years Ended December 31, Balance at beginning of period: Allowance for loan losses $ 531 $ 57 $ 588 $ 895 $ 53 $ 948 $ 601 $ 36 $ 637 Allowance for credit losses on lending-related commitments 24 6 30 35 9 44 28 3 31 Allowance for credit losses 555 63 618 930 62 992 629 39 668 Cumulative effect of change in accounting principle — — — — — — (42) 25 (17) Loan charge-offs (65) (3) (68) (67) (3) (70) (233) (5) (238) Recoveries on loans previously charged-off 47 4 51 76 4 80 38 4 42 Net loan (charge-offs) recoveries (18) 1 (17) 9 1 10 (195) (1) (196) Provision for credit losses: Provision for loan losses 28 11 39 (373) 3 (370) 531 (7) 524 Provision for credit losses on lending-related commitments 16 5 21 (11) (3) (14) 7 6 13 Provision for credit losses 44 16 60 (384) — (384) 538 (1) 537 Balance at end of period: Allowance for loan losses 541 69 610 531 57 588 895 53 948 Allowance for credit losses on lending-related commitments 40 11 51 24 6 30 35 9 44 Allowance for credit losses $ 581 $ 80 $ 661 $ 555 $ 63 $ 618 $ 930 $ 62 $ 992 Allowance for loan losses as a percentage of total loans 1.10 % 1.67 % 1.14 % 1.17 % 1.47 % 1.19 % 1.85 % 1.32 % 1.81 % Allowance for credit losses as a percentage of total loans 1.18 1.96 1.24 1.22 1.63 1.26 1.93 1.55 1.90
Nonaccrual Loans	The following table presents additional information regarding nonaccrual loans. Interest income of $12 million, $11 million and $7 million was recognized on nonaccrual loans for the years ended December 31, 2022, 2021 and 2020, respectively. (in millions) Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total December 31, 2022 Business loans: Commercial $ 64 $ 78 $ 142 Real estate construction: Other business lines (a) — 3 3 Commercial mortgage: Commercial Real Estate business line (b) — 1 1 Other business lines (a) 4 18 22 Total commercial mortgage 4 19 23 International 3 — 3 Total business loans 71 100 171 Retail loans: Residential mortgage 53 — 53 Consumer: Home equity 15 — 15 Other consumer 1 — 1 Total consumer 16 — 16 Total retail loans 69 — 69 Total nonaccrual loans $ 140 $ 100 $ 240 December 31, 2021 Business loans: Commercial $ 8 $ 165 $ 173 Real estate construction: Other business lines (a) — 6 6 Commercial mortgage: Commercial Real Estate business line (b) — 1 1 Other business lines (a) 4 27 31 Total commercial mortgage 4 28 32 International — 5 5 Total business loans 12 204 216 Retail loans: Residential mortgage 36 — 36 Consumer: Home equity 12 — 12 Total retail loans 48 — 48 Total nonaccrual loans $ 60 $ 204 $ 264 (a) Primarily loans secured by owner-occupied real estate. (b) Primarily loans to real estate developers.
Troubled Debt Restructurings By Type Of Modification	The following table details the amortized cost basis at December 31, 2022 and 2021 of loans considered to be TDRs that were restructured during the years ended December 31, 2022 and 2021, by type of modification. In cases of loans with more than one type of modification, the loans were categorized based on the most significant modification. 2022 2021 (a) Type of Modification Type of Modification (in millions) Principal Deferrals (b) Interest Rate Reductions Total Modifications Principal Deferrals (b) Interest Rate Reductions Total Modifications Years Ended December 31, Business loans: Commercial $ 26 $ — $ 26 $ 8 $ — $ 8 Real estate construction: Other business lines (c) 3 — 3 — — — Commercial mortgage: Other business lines (c) 14 — 14 — — — Total business loans 43 — 43 8 — 8 Retail loans: Residential mortgage — 27 27 — — — Consumer: Home equity (d) 1 1 2 — 2 2 Other consumer — 1 1 — — — Total consumer 1 2 3 — 2 2 Total retail loans 1 29 30 — 2 2 Total loans $ 44 $ 29 $ 73 $ 8 $ 2 $ 10 (a) Under the provisions of the CARES Act, qualifying COVID-19-related modifications, primarily principal deferrals, were not considered TDRs during the year ended December 31, 2021. (b) Primarily represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. Also includes commercial loans restructured in bankruptcy. (c) Primarily loans secured by owner-occupied real estate. (d) Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt.

Significant Group Concentrati_2

Significant Group Concentrations of Credit Risk Significant Group Concentrations of Credit Risk (Tables)	12 Months Ended
	Dec. 31, 2022
Significant Group Concentrations of Credit Risk [Abstract]
Schedule of Commercial Real Estate Loans and Unused Commitments	The following table summarizes the Corporation's commercial real estate loan portfolio by loan category. (in millions) December 31 2022 2021 Real estate construction loans: Commercial Real Estate business line (a) $ 2,505 $ 2,391 Other business lines (b) 600 557 Total real estate construction loans 3,105 2,948 Commercial mortgage loans: Commercial Real Estate business line (a) 4,681 3,338 Other business lines (b) 8,625 7,917 Total commercial mortgage loans 13,306 11,255 Total commercial real estate loans $ 16,411 $ 14,203 Total unused commitments on commercial real estate loans $ 6,602 $ 4,030 (a) Primarily loans to real estate developers. (b) Primarily loans secured by owner-occupied real estate.
Schedule of Automotive Industry Outstanding Loans and Total Exposure	Outstanding loans, included in commercial loans on the Consolidated Balance Sheets, and total exposure (outstanding loans, unused commitments and standby letters of credit) to companies related to the automotive industry were as follows: (in millions) December 31 2022 2021 Automotive loans: Production $ 1,068 $ 1,112 (a) Dealer 5,367 4,162 Total automotive loans $ 6,435 $ 5,274 Total automotive exposure: Production $ 2,028 $ 2,041 (a) Dealer 10,910 10,665 Total automotive exposure $ 12,938 $ 12,706 (a) Excludes PPP loans.

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
Premises and Equipment (Tables)	Dec. 31, 2022
Premises and Equipments [Abstract]
Premises and Equipment	A summary of premises and equipment by major category follows: (in millions) December 31 2022 2021 Land $ 81 $ 85 Buildings and improvements 737 852 Furniture and equipment 518 516 Total cost 1,336 1,453 Less: Accumulated depreciation and amortization (936) (999) Net book value $ 400 $ 454

Goodwill and Intangible Assets

Goodwill and Intangible Assets Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Changes in Carrying Value of Goodwill	The following table summarizes the carrying value of goodwill by reporting unit for the years ended December 31, 2022 and 2021. (in millions) December 31 2022 2021 Commercial Bank $ 473 $ 473 Retail Bank 101 101 Wealth Management 61 61 Total $ 635 $ 635

Derivative And Credit-Related_2

Derivative And Credit-Related Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule Of Derivative Instruments	The following table presents the composition of the Corporation’s derivative instruments held or issued for risk management purposes or in connection with customer-initiated and other activities at December 31, 2022 and 2021. The table excludes a derivative related to the Corporation's 2008 sale of its remaining ownership of Visa shares and includes accrued interest receivable and payable. December 31, 2022 December 31, 2021 Fair Value Fair Value (in millions) Notional/ Gross Derivative Assets Gross Derivative Liabilities Notional/ Gross Derivative Assets Gross Derivative Liabilities Risk management purposes Derivatives designated as hedging instruments Interest rate contracts: Fair value swaps - receive fixed/pay floating $ 3,150 $ — $ — $ 2,650 $ — $ — Cash flow swaps - receive fixed/ pay floating (b) 26,600 — 50 8,050 — — Derivatives used as economic hedges Foreign exchange contracts: Spot, forwards and swaps 392 1 3 452 — 2 Total risk management purposes 30,142 1 53 11,152 — 2 Customer-initiated and other activities Interest rate contracts: Caps and floors written 924 — 25 809 — 3 Caps and floors purchased 924 25 — 809 3 — Swaps 18,450 181 569 19,382 236 66 Total interest rate contracts 20,298 206 594 21,000 239 69 Energy contracts: Caps and floors written 4,051 — 430 1,779 — 203 Caps and floors purchased 4,051 431 — 1,779 204 — Swaps 6,419 589 576 4,212 466 459 Total energy contracts 14,521 1,020 1,006 7,770 670 662 Foreign exchange contracts: Spot, forwards, options and swaps 2,704 52 42 1,716 19 14 Total customer-initiated and other activities 37,523 1,278 1,642 30,486 928 745 Total gross derivatives $ 67,665 1,279 1,695 $ 41,638 928 747 Amounts offset in the Consolidated Balance Sheets: Netting adjustment - Offsetting derivative assets/liabilities (644) (644) (187) (187) Netting adjustment - Cash collateral received/posted (180) (4) (15) (452) Net derivatives included in the Consolidated Balance Sheets (c) 455 1,047 726 108 Amounts not offset in the Consolidated Balance Sheets: Marketable securities pledged under bilateral collateral agreements (70) (202) — (52) Net derivatives after deducting amounts not offset in the Consolidated Balance Sheets $ 385 $ 845 $ 726 $ 56 (a) Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected on the Consolidated Balance Sheets. (b) December 31, 2022 included $4.6 billion of forward starting swaps that will become effective on their contractual start dates in 2023 and 2024. (c) Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets included credit valuation adjustments for counterparty credit risk of $2 million and $9 million at December 31, 2022 and 2021, respectively.
Schedule of Effects of Fair Value Hedging on the Consolidated Statements of Comprehensive Income	The following table details the effects of fair value hedging on the Consolidated Statements of Comprehensive Income. (in millions) Interest on Medium- and Long-Term Debt Years Ended December 31 2022 2021 2020 Total interest on medium-and long-term debt (a) $ 87 $ 35 $ 80 Fair value hedging relationships: Interest rate contracts: Hedged items 112 102 109 Derivatives designated as hedging instruments (25) (68) (51) (a) Includes the effects of hedging.
Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps	The following tables summarize the expected weighted average remaining maturity of the notional amount of risk management interest rate swaps, the weighted average interest rates associated with amounts expected to be received or paid on interest rate swap agreements, and for fair value swaps, the carrying amount of the related hedged items, as of December 31, 2022 and 2021. Cash flow swaps - receive fixed/pay floating rate on variable-rate loans (dollar amounts in millions) December 31, 2022 December 31, 2021 Weighted average: Time to maturity (in years) 4.6 2.4 Receive rate (a) 2.35 % 1.84 % Pay rate (a), (b) 4.07 0.10 (a) Excludes forward starting swaps not effective as of the period shown. December 31, 2022 excluded $4.6 billion of forward starting swaps. December 31, 2021 excluded $3.0 billion of forward starting swaps. (b) Variable rates paid on receive fixed swaps designated as cash flow hedges are based on one-month LIBOR, BSBY or Secured Overnight Financing Rate (SOFR) rates in effect at December 31, 2022 and 2021. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily SOFR with a spread adjustment.
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Fair Value Swaps	Fair value swaps - receive fixed/pay floating rate on medium- and long-term debt (dollar amounts in millions) December 31, 2022 December 31, 2021 Carrying value of hedged items (a) 3,024 2,796 Weighted average: Time to maturity (in years) 3.9 3.6 Receive rate 3.52 % 3.68 % Pay rate (b) 4.90 1.08 (a) Included $(124) million and $145 million of cumulative hedging adjustments at December 31, 2022 and 2021, respectively, which included $4 million and $5 million, respectively, of hedging adjustment on a discontinued hedging relationship. (b) Floating rates paid on receive fixed swaps designated as fair value hedges are based on one-month LIBOR rates in effect at December 31, 2022 and 2021. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily SOFR with a spread adjustment.
Schedule Of Net Gains Recognized In Income On Customer-Initiated Derivatives	The net gains recognized in income on customer-initiated derivative instruments, net of the impact of offsetting positions included in derivative income, were as follows: Years Ended December 31, (in millions) 2022 2021 2020 Interest rate contracts $ 34 $ 36 $ 26 Energy contracts 28 18 1 Foreign exchange contracts 47 45 40 Total $ 109 $ 99 $ 67
Schedule Of Financial Instruments With Off-Balance Sheet Credit Risk	The Corporation’s credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. (in millions) December 31 2022 2021 Unused commitments to extend credit: Commercial and other $ 30,800 $ 25,910 Bankcard, revolving credit and home equity loan commitments 4,017 3,554 Total unused commitments to extend credit $ 34,817 $ 29,464 Standby letters of credit $ 3,712 $ 3,378 Commercial letters of credit 39 44
Summary Of Criticized Letters Of Credit	The following table presents a summary of criticized standby and commercial letters of credit at December 31, 2022 and 2021. The Corporation's criticized list is consistent with the Special Mention, Substandard and Doubtful categories defined by regulatory authorities. The Corporation manages credit risk through underwriting, periodically reviewing and approving its credit exposures using Board committee approved credit policies and guidelines. (dollar amounts in millions) December 31, 2022 December 31, 2021 Total criticized standby and commercial letters of credit $ 37 $ 37 As a percentage of total outstanding standby and commercial letters of credit 1.0 % 1.1 %

Variable Interest Entities (V_2

Variable Interest Entities (VIEs) (Tables)	12 Months Ended
Variable Interest Entities (VIEs) (Tables)	Dec. 31, 2022
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Impact of VIEs on the Consolidated Statements of Income	The following table summarizes the impact of these tax credit entities on the Corporation’s Consolidated Statements of Income. (in millions) Years Ended December 31 2022 2021 2020 Other noninterest income: Amortization of other tax credit investments $ — $ 1 $ 1 Provision for income taxes: Amortization of LIHTC Investments 72 $ 71 67 Low income housing tax credits (68) (68) (63) Other tax benefits related to tax credit entities (18) (17) (16) Total provision for income taxes $ (14) $ (14) $ (12)

Deposits (Tables)

Deposits (Tables)	12 Months Ended
Deposits (Tables)	Dec. 31, 2022
Deposits [Abstract]
Schedule Of Maturities Of Certificates of Deposit and Other Deposits with a Stated Maturity	At December 31, 2022, the scheduled maturities of certificates of deposit and other deposits with a stated maturity were as follows: (in millions) Years Ending December 31 2023 $ 1,789 2024 88 2025 24 2026 18 2027 13 Thereafter 5 Total $ 1,937
Schedule Of Maturities Of Domestic Deposits Of $100,000 Or More	A maturity distribution of domestic certificates of deposit of $100,000 and over follows: (in millions) December 31 2022 2021 Three months or less $ 220 $ 436 Over three months to six months 136 314 Over six months to twelve months 590 319 Over twelve months 49 74 Total $ 995 $ 1,143

Short-term Borrowings Short-ter

Short-term Borrowings Short-term Borrowings (Tables)	12 Months Ended
Short-term Borrowings Short-term Borrowings (Tables)	Dec. 31, 2022
Short-Term Debt [Abstract]
Summary of Short-term Borrowings	The following table provides a summary of short-term borrowings. (dollar amounts in millions) Federal Funds Purchased Other December 31, 2022 Amount outstanding at year-end $ 11 $ 3,200 Weighted average interest rate at year-end 4.32 % 4.54 % Maximum month-end balance during the year $ 1,106 $ 3,200 Average balance outstanding during the year 82 354 Weighted average interest rate during the year 3.28 % 4.08 % December 31, 2021 Amount outstanding at year-end $ — $ — Weighted average interest rate at year-end — % — % Maximum month-end balance during the year $ 2 $ — Average balance outstanding during the year 2 — Weighted average interest rate during the year 0.06 % — % December 31, 2020 Amount outstanding at year-end $ — $ — Weighted average interest rate at year-end — % — % Maximum month-end balance during the year $ 1,513 $ 1,250 Average balance outstanding during the year 30 284 Weighted average interest rate during the year 0.97 % 0.25 %

Medium- And Long-Term Debt (Tab

Medium- And Long-Term Debt (Tables)	12 Months Ended
Medium- And Long-Term Debt (Tables)	Dec. 31, 2022
Debt Disclosure [Abstract]
Schedule Of Medium- And Long-Term Debt	Medium- and long-term debt is summarized as follows: (in millions) December 31 2022 2021 Parent company Subordinated notes: 3.80% subordinated notes due 2026 (a) $ 237 $ 265 Medium- and long-term notes: 3.70% notes due 2023 (a) 841 877 4.00% notes due 2029 (a) 515 594 Total medium- and long-term notes 1,356 1,471 Total parent company 1,593 1,736 Subsidiaries Subordinated notes: 4.00% subordinated notes due 2025 (a) 331 363 7.875% subordinated notes due 2026 (a) 165 190 5.332% subordinated notes due 2033 (a) 459 — Total subordinated notes 955 553 Medium- and long-term notes: 2.50% notes due 2024 (a) 476 507 Total subsidiaries 1,431 1,060 Total medium- and long-term debt $ 3,024 $ 2,796 (a) The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate.
Schedule of Maturities of Medium- and Long-term Debt	At December 31, 2022, the principal maturities of medium- and long-term debt were as follows: (in millions) Years Ending December 31 2023 $ 850 2024 500 2025 350 2026 400 2027 — Thereafter 1,050 Total $ 3,150

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (Loss) Income (Tables)	12 Months Ended
Accumulated Other Comprehensive (Loss) Income (Tables)	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Accumulated Other Comprehensive Income (Loss)	The following table presents a reconciliation of the changes in the components of accumulated other comprehensive (loss) income and details the components of other comprehensive (loss) income for the years ended December 31, 2022, 2021 and 2020, including the amount of income tax (benefit) expense allocated to each component of other comprehensive (loss) income. (in millions) Years Ended December 31 2022 2021 2020 Accumulated net unrealized losses on investment securities: Balance at beginning of period, net of tax $ (99) $ 211 $ 65 Net unrealized (losses) gains arising during the period (2,903) (406) 191 Less: (Benefit) provision for income taxes (683) (96) 45 Change in net unrealized (losses) gains on investment securities, net of tax (2,220) (310) 146 Balance at end of period, net of tax $ (2,319) $ (99) $ 211 Accumulated net (losses) gains on cash flow hedges: Balance at beginning of period, net of tax $ 55 $ 155 $ 34 Net cash flow hedge (losses) gains arising during the period (1,329) (35) 229 Less: (Benefit) provision for income taxes (313) (8) 56 Change in net cash flow hedge (losses) gains arising during the period, net of tax (1,016) (27) 173 Less: Net cash flow (losses) gains included in interest and fees on loans (25) 95 70 Less: (Benefit) provision for income taxes (6) 22 18 Reclassification adjustment for net cash flow hedge (losses) gains included in net income, net of tax (19) 73 52 Change in net cash flow hedge (losses) gains, net of tax (997) (100) 121 Balance at end of period, net of tax (a) $ (942) $ 55 $ 155 Accumulated defined benefit pension and other postretirement plans adjustment: Balance at beginning of period, net of tax $ (168) $ (302) $ (415) Actuarial (loss) gain arising during the period (415) 159 128 Prior service credit arising during the period — 1 — Net defined benefit pension and other postretirement plans adjustment arising during the period (415) 160 128 Less: (Benefit) provision for income taxes (98) 38 31 Net defined benefit pension and other postretirement plans adjustment arising during the period, net of tax (317) 122 97 Amounts recognized in other noninterest expenses: Amortization of actuarial net loss 28 40 47 Amortization of prior service credit (23) (25) (27) Total amounts recognized in other noninterest expenses 5 15 20 Less: Provision for income taxes 1 3 4 Adjustment for amounts recognized as components of net periodic benefit credit during the period, net of tax 4 12 16 Change in defined benefit pension and other postretirement plans adjustment, net of tax (313) 134 113 Balance at end of period, net of tax $ (481) $ (168) $ (302) Total accumulated other comprehensive (loss) income at end of period, net of tax $ (3,742) $ (212) $ 64 (a) The Corporation expects to reclassify $428 million of losses, net of tax, from accumulated other comprehensive loss to earnings over the next twelve months if interest yield curves and notional amounts remain at December 31, 2022 levels.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	12 Months Ended
Net Income Per Common Share (Tables)	Dec. 31, 2022
Earnings Per Share [Abstract]
Basic And Diluted Net Income Per Common Share	Basic and diluted net income per common share are presented in the following table. (in millions, except per share data) Years Ended December 31 2022 2021 2020 Basic and diluted Net income $ 1,151 $ 1,168 $ 497 Less: Income allocated to participating securities 6 5 2 Preferred stock dividends 23 23 13 Net income attributable to common shares $ 1,122 $ 1,140 $ 482 Basic average common shares 131 135 139 Basic net income per common share $ 8.56 $ 8.45 $ 3.45 Basic average common shares 131 135 139 Dilutive common stock equivalents: Net effect of the assumed exercise of stock awards 2 2 1 Diluted average common shares 133 137 140 Diluted net income per common share $ 8.47 $ 8.35 $ 3.43
Schedule of Average Shares Excluded From Diluted Net Income Per Common Share Computation	The following average shares related to outstanding options to purchase shares of common stock were not included in the computation of diluted net income per common share because the options were anti-dilutive for the period. (average outstanding options in thousands) Years Ended December 31 2022 2021 2020 Average outstanding options 543 438 1,498 Range of exercise prices $70.18 - $95.25 $79.01 - $95.25 $49.20 - $95.25

Share-Based Compensation Share-

Share-Based Compensation Share-Based Compensation (Tables)	12 Months Ended
Share-Based Compensation Share-Based Compensation (Tables)	Dec. 31, 2022
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Summary of Components of Share-Based Compensation Expense	The components of share-based compensation expense for all share-based compensation plans and related tax benefits are as follows: (in millions) Years Ended December 31 2022 2021 2020 Total share-based compensation expense $ 60 $ 41 $ 24 Related tax benefits recognized in net income $ 14 $ 10 $ 6
Schedule of Unrecognized Compensation Expense	The following table summarizes unrecognized compensation expense for all share-based plans. (dollar amounts in millions) December 31, 2022 Total unrecognized share-based compensation expense $ 38 Weighted-average expected recognition period (in years) 2.1
Estimated Weighted-Average Grant-Date Fair Value per Option and the Underlying Model Assumptions	The estimated weighted-average grant-date fair value per option and the underlying binomial option-pricing model assumptions are summarized in the following table: Years Ended December 31 2022 2021 2020 Weighted-average grant-date fair value per option $ 25.31 $ 18.36 $ 13.03 Weighted-average assumptions: Risk-free interest rates 1.78 % 1.05 % 1.65 % Expected dividend yield 4.00 4.00 4.14 Volatility 34 39 27 Expected option life (in years) 8.0 7.8 8.4
Summary of Stock Option Activity and Related Information	A summary of the Corporation’s stock option activity and related information for the year ended December 31, 2022 follows: Weighted-Average Number of Exercise Price Remaining Aggregate Outstanding-January 1, 2022 2,244 $ 57.50 Granted 183 92.58 Forfeited or expired (32) 76.55 Exercised (387) 50.64 Outstanding-December 31, 2022 2,008 61.71 5.1 $ 22 Exercisable-December 31, 2022 1,379 $ 57.20 3.9 $ 20
Summary of Restricted Stock Activity and Related Information	A summary of the Corporation’s restricted stock activity and related information for the year ended December 31, 2022 follows: Number of Weighted-Average Outstanding-January 1, 2022 41 61.64 Forfeited — — Vested (41) 67.69 Outstanding-December 31, 2022 — $ —
Summary of Restricted Stock Unit Activity and Related Information	A summary of the Corporation's restricted stock unit activity and related information for the year ended December 31, 2022 follows: Service-Based Units Performance-Based Units Number of Weighted-Average Number of Weighted-Average Outstanding-January 1, 2022 1,346 $ 59.18 816 $ 63.12 Granted 361 84.14 182 87.45 Forfeited (70) 65.24 (34) 70.40 Vested (a) (232) 65.36 (220) 79.13 Outstanding-December 31, 2022 1,405 64.27 744 64.01 (a) Includes performance-based units valued at zero, as they did not meet the minimum performance threshold.

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
Employee Benefit Plans (Tables)	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Schedule of Defined Benefit Plans Disclosures	The following table sets forth reconciliations of plan assets and the projected benefit obligation, the weighted-average assumptions used to determine year-end benefit obligations, and the amounts recognized in accumulated other comprehensive (loss) income for the Corporation’s defined benefit pension plans and postretirement benefit plan at December 31, 2022 and 2021. The Corporation used a measurement date of December 31, 2022 for these plans. Defined Benefit Pension Plans Qualified Non-Qualified Postretirement Benefit Plan (dollar amounts in millions) 2022 2021 2022 2021 2022 2021 Change in fair value of plan assets: Fair value of plan assets at January 1 $ 3,462 $ 3,350 $ — $ — $ 53 $ 57 Actual return on plan assets (777) 291 — — (4) (1) Plan participants' contributions — — — — — 1 Benefits paid (177) (179) — — (3) (4) Fair value of plan assets at December 31 $ 2,508 $ 3,462 $ — $ — $ 46 $ 53 Change in projected benefit obligation: Projected benefit obligation at January 1 $ 2,214 $ 2,327 $ 207 $ 252 $ 31 $ 35 Service cost 37 38 2 2 — — Interest cost 62 61 6 7 1 1 Actuarial gain (525) (69) (37) (3) (8) (1) Plan participants' contributions — — — — — 1 Benefits paid (177) (179) (15) (15) (3) (4) Plan amendments (a) — 36 — (36) — (1) Projected benefit obligation at December 31 $ 1,611 $ 2,214 $ 163 $ 207 $ 21 $ 31 Accumulated benefit obligation $ 1,598 $ 2,199 $ 161 $ 204 $ 21 $ 31 Funded status at December 31 (b) (c) $ 897 $ 1,248 $ (163) $ (207) $ 25 $ 22 Weighted-average assumptions used: Discount rate 5.60 % 2.96 % 5.60 % 2.96 % 5.71 % 2.79 % Rate of compensation increase 4.25 4.00 4.25 4.00 n/a n/a Interest crediting rate 3.99 - 5.25 3.79 - 5.00 3.99 - 5.25 3.79 - 5.00 n/a n/a Amounts recognized in accumulated other comprehensive (loss) income before income taxes: Net actuarial loss $ (638) $ (205) $ (46) $ (92) $ (10) $ (11) Prior service credit 33 48 38 47 2 2 Balance at December 31 $ (605) $ (157) $ (8) $ (45) $ (8) $ (9) (a) The qualified defined benefit pension plan was amended in 2021 to include a flat dollar benefit for specified participants that would otherwise have been payable from the non-qualified defined benefit pension plan, resulting in a shift in projected benefit obligation from the non-qualified plan to the qualified plan. (b) Based on projected benefit obligation for defined benefit pension plans and accumulated benefit obligation for postretirement benefit plan. (c) The Corporation recognizes the overfunded and underfunded status of the plans in accrued income and other assets and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets. n/a - not applicable
Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss	The following table details the changes in plan assets and benefit obligations recognized in other comprehensive loss for the year ended December 31, 2022. Defined Benefit Pension Plans (in millions) Qualified Non-Qualified Postretirement Benefit Plan Total Actuarial gain (loss) arising during the period $ (453) $ 37 $ 1 $ (415) Amortization of net actuarial loss 19 9 — 28 Amortization of prior service credit (14) (9) — (23) Total recognized in other comprehensive loss $ (448) $ 37 $ 1 $ (410)
Components of Net Periodic Defined Benefit (Credit) Cost	Components of net periodic defined benefit (credit) cost and postretirement benefit credit, the actual return on plan assets and the weighted-average assumptions used were as follows: Defined Benefit Pension Plans (dollar amounts in millions) Qualified Non-Qualified Years Ended December 31 2022 2021 2020 2022 2021 2020 Service cost (a) $ 37 $ 38 $ 32 $ 2 $ 2 $ 1 Other components of net benefit (credit) cost: Interest cost 62 61 70 6 7 8 Expected return on plan assets (201) (202) (185) — — — Amortization of prior service credit (14) (19) (19) (9) (6) (8) Amortization of actuarial net loss 19 29 38 9 11 9 Total other components of net benefit (credit) cost (b) (134) (131) (96) 6 12 9 Net periodic defined benefit (credit) cost $ (97) $ (93) $ (64) $ 8 $ 14 $ 10 Actual return on plan assets $ (777) $ 291 $ 537 n/a n/a n/a Actual rate of return on plan assets (23.02) % 8.92 % 18.72 % n/a n/a n/a Weighted-average assumptions used: Discount rate 2.96 % 2.71 % 3.43 % 2.96 % 2.71 % 3.43 % Expected long-term return on plan assets 6.50 6.50 6.50 n/a n/a n/a Rate of compensation increase 4.00 4.00 4.00 4.00 4.00 4.00 (a) Included in salaries and benefits expense on the Consolidated Statements of Income. (b) Included in other noninterest expenses on the Consolidated Statements of Income. n/a - not applicable (dollar amounts in millions) Postretirement Benefit Plan Years Ended December 31 2022 2021 2020 Other components of net benefit credit: Interest cost $ 1 $ 1 $ 1 Expected return on plan assets (3) (3) (2) Net periodic postretirement benefit credit $ (2) $ (2) $ (1) Actual return on plan assets $ (4) $ (1) $ 3 Actual rate of return on plan assets (8.24 %) (2.25 %) 6.00 % Weighted-average assumptions used: Discount rate 2.79% 2.43 % 3.26 % Expected long-term return on plan assets 5.00 5.00 5.00 Healthcare cost trend rate (a): Cost trend rate assumed n/a 6.00 6.25 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) n/a 4.50 4.50 Year that the rate reaches the ultimate trend rate n/a 2027 2027 (a) Beginning January 1, 2022, the healthcare cost trend assumption is no longer a relevant assumption due to the change from a self-insured plan to the Medicare and pre-65 individual marketplace with a funded Health Reimbursement Arrangement account. n/a - not applicable
Fair Value of Defined Benefit Plan Investments	The fair values of the Corporation’s qualified defined benefit pension plan investments measured at fair value on a recurring basis at December 31, 2022 and 2021, by asset category and level within the fair value hierarchy, are detailed in the table below. (in millions) Total Level 1 Level 2 Level 3 December 31, 2022 Fixed income securities: U.S. Treasury and other U.S. government agency securities $ 534 $ 531 $ 3 $ — Corporate and municipal bonds and notes 676 — 676 — Mortgage-backed securities 20 — 20 — Private placements 39 — — 39 Total investments in the fair value hierarchy $ 1,269 $ 531 $ 699 $ 39 Investments measured at net asset value: Collective investment funds 1,230 Total investments at fair value $ 2,499 December 31, 2021 Fixed income securities: U.S. Treasury and other U.S. government agency securities $ 599 $ 595 $ 4 $ — Corporate and municipal bonds and notes 893 — 893 — Mortgage-backed securities 27 — 27 — Private placements 50 — — 50 Total investments in the fair value hierarchy $ 1,569 $ 595 $ 924 $ 50 Investments measured at net asset value: Collective investment funds 1,885 Total investments at fair value $ 3,454
Changes in Level 3 Defined Benefit Plan Investments	The table below provides a summary of changes in the Corporation’s qualified defined benefit pension plan’s Level 3 investments measured at fair value on a recurring basis for the years ended December 31, 2022 and 2021. Balance at Balance at Net Gains (Losses) (in millions) Realized Unrealized Purchases Sales Year Ended December 31, 2022 Private placements $ 50 $ (3) $ (12) $ 38 $ (34) $ 39 Year Ended December 31, 2021 Private placements $ 58 $ 2 $ (4) $ 44 $ (50) $ 50
Estimated Future Benefit Payments	The Corporation currently expects to make no employer contributions to the qualified and non-qualified defined benefit pension plans and postretirement benefit plan for the year ended December 31, 2023. Estimated Future Benefit Payments (in millions) Years Ended December 31 Qualified Non-Qualified Postretirement 2023 $ 168 $ 14 $ 3 2024 140 15 3 2025 139 15 3 2026 143 15 2 2027 140 14 2 2028 - 2032 663 70 8 (a) Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies.

Income Taxes And Tax-Related _2

Income Taxes And Tax-Related Items Income Taxes And Tax-Related Items (Tables)	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Current and Deferred Components of the Provision for Income Taxes	The current and deferred components of the provision for income taxes were as follows: (in millions) December 31 2022 2021 2020 Current: Federal $ 296 $ 212 $ 171 Foreign 6 5 5 State and local 50 26 30 Total current 352 243 206 Deferred: Federal (24) 62 (73) State and local (3) 17 (9) Total deferred (27) 79 (82) Total $ 325 $ 322 $ 124
Reconciliation of Expected Income Tax Expense at the Federal Statutory Rate to the Provision for Income Taxes	A reconciliation of expected income tax expense at the federal statutory rate to the Corporation’s provision for income taxes and effective tax rate follows: (dollar amounts in millions) 2022 2021 2020 Years Ended December 31 Amount Rate Amount Rate Amount Rate Tax based on federal statutory rate $ 310 21.0 % $ 313 21.0 % $ 130 21.0 % State income taxes 36 2.5 35 2.4 18 2.9 Affordable housing and historic credits (13) (0.9) (13) (0.9) (12) (1.9) Bank-owned life insurance (10) (0.7) (10) (0.6) (10) (1.6) FDIC insurance expense 6 0.4 5 0.3 7 1.1 Employee stock transactions (3) (0.2) (3) (0.2) (1) (0.2) Tax-related interest and penalties — — — — (2) (0.3) Other (1) (0.1) (5) (0.4) (6) (1.0) Provision for income taxes $ 325 22.0 % $ 322 21.6 % $ 124 20.0 %
Reconciliation of Beginning and Ending Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of net unrecognized tax benefits follows: (in millions) 2022 2021 2020 Balance at January 1 $ 18 $ 19 $ 17 (Decrease) increase as a result of tax positions taken during a prior period (2) 1 1 Increase as a result of tax positions taken during the current period 3 3 2 Decreases related to settlements with tax authorities (3) (3) (1) Reduction as a result of expiration of statute of limitations — (2) — Balance at December 31 $ 16 $ 18 $ 19
Tax Years Remaining Open for Examination for Significant Tax Jurisdictions	The following tax years for significant jurisdictions remain subject to examination as of December 31, 2022: Jurisdiction Tax Years Federal 2019-2021 New York 2018-2021 California 2006-2007, 2018-2021
Principal Components of Deferred Tax Assets and Liabilities	The principal components of deferred tax assets and liabilities were as follows: (in millions) December 31 2022 2021 Deferred tax assets: Allowance for depreciation $ — $ 7 Allowance for loan losses 128 124 Deferred compensation 84 71 Deferred loan origination fees and costs 12 17 Net hedging losses 290 — Net unrealized losses on investment securities available-for-sale 713 30 Operating lease liabilities 85 74 Other temporary differences, net 42 21 Total deferred tax assets before valuation allowance 1,354 344 Valuation allowance (5) (5) Total deferred tax assets 1,349 339 Deferred tax liabilities: Lease financing transactions (31) (49) Defined benefit plans (123) (198) Allowance for depreciation (4) — Net hedging gains — (17) Leasing Right of Use assets (71) (66) Total deferred tax liabilities (229) (330) Net deferred tax assets $ 1,120 $ 9

Regulatory Capital (Tables)

Regulatory Capital (Tables)	12 Months Ended
Regulatory Capital (Tables)	Dec. 31, 2022
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Summary of Capital Position	The following is a summary of the capital position of the Corporation and Comerica Bank, its principal banking subsidiary. (dollar amounts in millions) Comerica Comerica December 31, 2022 CET1 capital (minimum $3.5 billion (Consolidated)) $ 7,884 $ 7,801 Tier 1 capital (minimum $4.7 billion (Consolidated)) 8,278 7,801 Total capital (minimum $6.3 billion (Consolidated)) 9,817 9,190 Risk-weighted assets 78,871 78,781 Average assets (fourth quarter) 86,726 86,608 CET1 capital to risk-weighted assets (minimum-4.5%) 10.00 % 9.90 % Tier 1 capital to risk-weighted assets (minimum-6.0%) 10.50 9.90 Total capital to risk-weighted assets (minimum-8.0%) 12.45 11.67 Tier 1 capital to average assets (minimum-4.0%) 9.55 9.01 Capital conservation buffer (minimum-2.5%) 4.45 3.67 December 31, 2021 CET1 capital (minimum $3.1 billion (Consolidated)) $ 7,064 $ 7,634 Tier 1 capital (minimum $4.2 billion (Consolidated)) 7,458 7,634 Total capital (minimum $5.6 billion (Consolidated)) 8,608 8,584 Risk-weighted assets 69,708 69,542 Average assets (fourth quarter) 96,417 96,216 CET1 capital to risk-weighted assets (minimum-4.5%) 10.13 % 10.98 % Tier 1 capital to risk-weighted assets (minimum-6.0%) 10.70 10.98 Total capital to risk-weighted assets (minimum-8.0%) 12.35 12.34 Tier 1 capital to average assets (minimum-4.0%) 7.74 7.93 Capital conservation buffer (minimum-2.5%) 4.35 4.34

Strategic Lines of Business (Ta

Strategic Lines of Business (Tables)	12 Months Ended
Strategic Lines of Business (Tables)	Dec. 31, 2022
Segment Reporting [Abstract]
Business Segment Financial Results	Business segment financial results are as follows: (dollar amounts in millions) Commercial Retail Wealth Management Finance Other Total Year Ended December 31, 2022 Earnings summary: Net interest income (expense) $ 1,753 $ 680 $ 199 $ (187) $ 21 $ 2,466 Provision for credit losses 32 11 9 — 8 60 Noninterest income 607 122 298 58 (17) 1,068 Noninterest expenses 963 689 348 1 (3) 1,998 Provision (benefit) for income taxes 313 22 33 (37) (6) 325 Net income (loss) $ 1,052 $ 80 $ 107 $ (93) $ 5 $ 1,151 Net credit-related charge-offs (recoveries) $ 21 $ (1) $ (3) $ — $ — $ 17 Selected average balances: Assets $ 47,660 $ 2,814 $ 5,037 $ 20,682 $ 11,079 $ 87,272 Loans 43,481 2,063 4,906 — 10 50,460 Deposits 42,584 26,672 5,439 591 195 75,481 Statistical data: Return on average assets (a) 2.21 % 0.29 % 1.83 % n/m n/m 1.32 % Efficiency ratio (b) 40.69 85.31 70.00 n/m n/m 56.32 Year Ended December 31, 2021 Earnings summary: Net interest income (expense) $ 1,574 $ 565 $ 166 $ (471) $ 10 $ 1,844 Provision for credit losses (346) (5) (32) — (1) (384) Noninterest income 663 123 279 41 17 1,123 Noninterest expenses 870 645 317 1 28 1,861 Provision (benefit) for income taxes 384 5 36 (100) (3) 322 Net income (loss) $ 1,329 $ 43 $ 124 $ (331) $ 3 $ 1,168 Net credit-related (recoveries) charge-offs $ (12) $ 2 $ — $ — $ — $ (10) Selected average balances: Assets $ 44,004 $ 3,213 $ 5,028 $ 17,705 $ 20,202 $ 90,152 Loans 41,801 2,382 4,903 — (3) 49,083 Deposits 45,602 25,682 5,218 965 214 77,681 Statistical data: Return on average assets (a) 2.71 % 0.16 % 2.24 % n/m n/m 1.30 % Efficiency ratio (b) 38.76 92.98 71.02 n/m n/m 62.42 (Table continues on following page) (dollar amounts in millions) Commercial Bank Retail Wealth Management Finance Other Total Year Ended December 31, 2020 Earnings summary: Net interest income (expense) $ 1,605 $ 503 $ 167 $ (384) $ 20 $ 1,911 Provision for credit losses 495 7 35 — — 537 Noninterest income 555 110 263 55 18 1,001 Noninterest expenses 813 607 295 2 37 1,754 Provision (benefit) for income taxes 184 (3) 22 (78) (1) 124 Net income (loss) $ 668 $ 2 $ 78 $ (253) $ 2 $ 497 Net credit-related charge-offs $ 192 $ 1 $ 3 $ — $ — $ 196 Selected average balances: Assets $ 45,716 $ 3,281 $ 5,162 $ 15,418 $ 11,569 $ 81,146 Loans 44,119 2,468 5,045 — (1) 51,631 Deposits 36,616 22,832 4,402 1,026 162 65,038 Statistical data: Return on average assets (a) 1.46 % — % 1.51 % n/m n/m 0.61 % Efficiency ratio (b) 37.63 98.52 68.47 n/m n/m 60.13 (a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity. (b) Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net gains (losses) from securities, a derivative contract tied to the conversion rate of Visa Class B shares and changes in the value of shares obtained through monetization of warrants. n/m – not meaningful

Parent Company Financial Stat_2

Parent Company Financial Statements Parent Company Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Balance Sheets - Comerica Incorporated	BALANCE SHEETS - COMERICA INCORPORATED (in millions, except share data) December 31 2022 2021 Assets Cash and due from subsidiary banks $ 1,810 $ 1,105 Other short-term investments 92 113 Receivable due from subsidiary bank 150 150 Investment in subsidiaries, principally banks 4,853 8,278 Premises and equipment — 1 Accrued income and other assets 191 265 Total assets $ 7,096 $ 9,912 Liabilities and Shareholders’ Equity Medium- and long-term debt $ 1,593 $ 1,736 Accrued expenses and other liabilities 322 279 Total liabilities 1,915 2,015 Fixed-rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000 liquidation preference per share: Authorized - 4,000 shares Issued - 4,000 shares 394 394 Common stock - $5 par value: Authorized - 325,000,000 shares Issued - 228,164,824 shares 1,141 1,141 Capital surplus 2,220 2,175 Accumulated other comprehensive loss (3,742) (212) Retained earnings 11,258 10,494 Less cost of common stock in treasury - 97,197,962 shares at 12/31/2022 and 97,476,872 shares at 12/31/2021 (6,090) (6,095) Total shareholders’ equity 5,181 7,897 Total liabilities and shareholders’ equity $ 7,096 $ 9,912
Statements of Income - Comerica Incorporated	STATEMENTS OF INCOME - COMERICA INCORPORATED (in millions) Years Ended December 31 2022 2021 2020 Income Income from subsidiaries: Dividends from subsidiaries $ 1,067 $ 849 $ 498 Other interest income 13 1 4 Intercompany management fees 109 235 209 Total income 1,189 1,085 711 Expenses Interest on medium- and long-term debt 47 20 30 Salaries and benefits expense 53 170 141 Other noninterest expenses 46 72 66 Total expenses 146 262 237 Income before benefit for income taxes and equity in undistributed earnings of subsidiaries 1,043 823 474 Benefit for income taxes (3) (6) (6) Income before equity in undistributed earnings of subsidiaries 1,046 829 480 Equity in undistributed earnings of subsidiaries, principally banks 105 339 17 Net income 1,151 1,168 497 Less income allocated to participating securities 6 5 2 Preferred stock dividends 23 23 13 Net income attributable to common shares $ 1,122 $ 1,140 $ 482
Statements of Cash Flows - Comerica Incorporated	STATEMENTS OF CASH FLOWS - COMERICA INCORPORATED (in millions) Years Ended December 31 2022 2021 2020 Operating Activities Net income $ 1,151 $ 1,168 $ 497 Adjustments to reconcile net income to net cash provided by operating activities: Undistributed (earnings) of subsidiaries, principally banks (105) (339) (17) Net periodic defined benefit cost 2 5 4 Share-based compensation expense 22 19 11 Benefit for deferred income taxes — (2) (1) Other, net 24 3 2 Net cash provided by operating activities 1,094 854 496 Investing Activities Advance to subsidiary bank — (150) — Capital transactions with subsidiaries — — (21) Other, net 2 (1) 2 Net cash provided by (used in) investing activities 2 (151) (19) Financing Activities Preferred Stock: Issuances — — 394 Cash dividends paid (23) (23) (8) Common Stock: Repurchases (43) (729) (199) Cash dividends paid (353) (369) (375) Issuances under employee stock plans 28 34 4 Net cash used in financing activities (391) (1,087) (184) Net increase (decrease) in cash and cash equivalents 705 (384) 293 Cash and cash equivalents at beginning of period 1,105 1,489 1,196 Cash and cash equivalents at end of period $ 1,810 $ 1,105 $ 1,489 Interest paid $ 41 $ 21 $ 33

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	12 Months Ended
Revenue from Contracts with Customers (Tables)	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Composition of Revenue from Contracts with Customers	The following table presents the composition of revenue from contracts with customers, segregated from other sources of noninterest income, by business segment. Commercial Retail Wealth Management Finance & Other Total (in millions) Year Ended December 31, 2022 Revenue from contracts with customers: Card fees $ 227 $ 42 $ 4 $ — $ 273 Fiduciary income — — 233 — 233 Service charges on deposit accounts 132 57 6 — 195 Commercial loan servicing fees (a) 18 — — — 18 Brokerage fees — — 21 — 21 Other noninterest income (b) 7 16 24 1 48 Total revenue from contracts with customers 384 115 288 1 788 Other sources of noninterest income 223 7 10 40 280 Total noninterest income $ 607 $ 122 $ 298 $ 41 $ 1,068 Year Ended December 31, 2021 Revenue from contracts with customers: Card fees $ 250 $ 44 $ 4 $ — $ 298 Fiduciary income — — 231 — 231 Service charges on deposit accounts 136 54 5 — 195 Commercial loan servicing fees (a) 19 — — — 19 Brokerage fees — — 14 — 14 Other noninterest income (b) 5 17 17 — 39 Total revenue from contracts with customers 410 115 271 — 796 Other sources of noninterest income 253 8 8 58 327 Total noninterest income 663 123 279 58 1,123 Year Ended December 31, 2020 Revenue from contracts with customers: Card fees $ 229 $ 38 $ 3 $ — $ 270 Fiduciary income — — 209 — 209 Service charges on deposit accounts 128 52 5 — 185 Commercial loan servicing fees (a) 18 — — — 18 Brokerage fees — — 21 — 21 Other noninterest income (b) 28 10 17 — 55 Total revenue from contracts with customers 403 100 255 — 758 Other sources of noninterest income 152 10 8 73 243 Total noninterest income $ 555 $ 110 $ 263 $ 73 $ 1,001 (a) Included in commercial lending fees on the Consolidated Statements of Income. (b) Excludes derivative, warrant and other miscellaneous income.

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2022
Leases [Abstract]
Operating Leases	As a lessee, the Corporation has entered into operating leases for the majority of its real estate locations, primarily retail and office space. Total lease expense for the years ended December 31, 2022, 2021 and 2020 were as follows: (in millions) Years Ended December 31 2022 2021 2020 Operating lease expense $ 68 $ 65 $ 64 Variable lease expense 17 15 16 Less sublease income (1) (1) (1) Total lease expense $ 84 $ 79 $ 79
Leases - Supplemental balance sheet information	Supplemental balance sheet information related to leases is summarized as follows: (dollar amounts in millions) Years Ended December 31 2022 2021 2020 Included in accrued income and other assets Right-of-use (ROU) assets $ 338 $ 317 $ 306 Included in accrued expenses and other liabilities Operating lease liabilities 406 356 344 Weighted average discount rate 3.53 % 3.33 % 3.61 % Weighted average lease term in years 9 8 8
Leases - Supplemental cash flow information	Supplemental cash flow information related to leases is summarized as follows: (in millions) Years Ended December 31 2022 2021 2020 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 66 $ 66 $ 65 ROU assets obtained in exchange for new liabilities (a) 80 64 28 (a) Includes a $24 million reduction to both ROU assets and lease liabilities for a partial termination related to the Company's Texas headquarters for the year ended December 31, 2022.
Contractual maturities of operating lease liabilities	As of December 31, 2022, the contractual maturities of operating lease liabilities were as follows: (in millions) Years Ending December 31 2023 $ 63 2024 69 2025 63 2026 55 2027 45 Thereafter 185 Total contractual maturities 480 Less imputed interest (74) Total operating lease liabilities $ 406
Contractual maturities of sales-type and direct financing lease receivables	As of December 31, 2022, the contractual maturities of sales-type and direct financing lease receivables were as follows: (in millions) Years Ending December 31 2023 $ 101 2024 127 2025 137 2026 71 2027 36 Thereafter 148 Total lease payments receivable 620 Unguaranteed residual values 61 Less deferred interest income (22) Total lease receivables (a) $ 659 (a) Excludes net investment in leveraged leases of $101 million.

Basis of Presentation and Acc_3

Basis of Presentation and Accounting Policies Basis of Presentation and Accounting Policies (Narrative) (Details) $ in Millions		12 Months Ended
		Dec. 31, 2022 USD ($) segments	Dec. 31, 2021 USD ($)
Federal Home Loan Bank Stock		$ 138	$ 7
Federal Reserve Bank Stock		85	85
Net Deferred Income on Originated Loans		$ 118	102
Delinquency Status, Period of Unpaid Scheduled Monthly Payment		30 days
Hosting Arrangement, Service Contract, Implementation Cost, Capitalized, after Accumulated Amortization		$ 32	21
Hosting Arrangement, Service Contract, Implementation Cost, Capitalized, Accumulated Amortization		$ 3	3
Number of Reporting Units \| segments		3
Derivative, Notional Amount	[1]	$ 67,665	$ 41,638
Defined Benefit Plan Investment Gain Loss Amortization Adjustment, Allowable Percentage		10%
Defined Benefit Plan Actuarial Gain Loss Amortization Adjustment, Allowable Percentage		10%
Defined Benefit Plan Market-related Value Plan Assets, Amortization Period		5 years
Premises the Corporation owns \| Minimum
Premises and Equipment, Useful Life		3 years
Premises the Corporation owns \| Maximum
Premises and Equipment, Useful Life		33 years
Furniture and equipment \| Minimum
Premises and Equipment, Useful Life		3 years
Furniture and equipment \| Maximum
Premises and Equipment, Useful Life		8 years
Leasehold improvements \| Maximum
Premises and Equipment, Useful Life		10 years
Software
Premises and Equipment, Useful Life		5 years
Retail loans \| Commercial mortgage
Past Due Period Residential Mortgage And Home Equity Loans Placed On Nonaccrual Status		90 days
Past Due Threshold For Charge-Off		180 days
Commercial borrower \| Business loans
Past Due Period Business Loans Placed On Nonaccrual Status		90 days
Consumer borrower \| Retail loans \| Home equity
Maximum Past Due Status Junior Lien Home Equity Placed On Nonaccrual Status		90 days
Consumer borrower \| Retail loans \| Other consumer
Past Due Threshold For Charge-Off		120 days
Threshold, Days Past Due, Other Consumer Placed On Nonaccrual Status		90 days
Swaps - fair value - receive fixed/pay floating \| Short-Cut Method \| Not Designated as Hedging Instrument [Member] \| Interest rate swap
Derivative, Notional Amount		$ 2,600

[1]Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected on the Consolidated Balance Sheets.

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Recurring
Transfers into or out of Level 3	$ 0	$ 0
Total liabilities at fair value	1,799	873
Nonrecurring
Total liabilities at fair value	$ 0	$ 0

Fair Value Measurements (Assets

Fair Value Measurements (Assets And Liabilities Recorded At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		$ 19,012	$ 16,986
Derivative assets		1,279	928
Derivative liabilities		1,695	747
U.S. Treasury and other U.S. government agency securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		2,664	2,993
Commercial Mortgage Backed Securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	4,693	705
Recurring
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		19,012	16,986
Derivative assets		1,279	928
Total assets at fair value		20,427	18,089
Derivative liabilities		1,707	760
Deferred compensation plan liabilities		92	113
Total liabilities at fair value		1,799	873
Recurring \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		2,664	2,993
Derivative assets		0	0
Total assets at fair value		2,800	3,168
Derivative liabilities		0	0
Deferred compensation plan liabilities		92	113
Total liabilities at fair value		92	113
Recurring \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		16,348	13,993
Derivative assets		1,279	902
Total assets at fair value		17,627	14,895
Derivative liabilities		1,695	747
Deferred compensation plan liabilities		0	0
Total liabilities at fair value		1,695	747
Recurring \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		0	0
Derivative assets		0	26
Total assets at fair value		0	26
Derivative liabilities		12	13
Deferred compensation plan liabilities		0	0
Total liabilities at fair value		12	13
Recurring \| Interest rate contracts
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		206	239
Derivative liabilities		644	69
Recurring \| Interest rate contracts \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities		0	0
Recurring \| Interest rate contracts \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		206	213
Derivative liabilities		644	69
Recurring \| Interest rate contracts \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		0	26
Derivative liabilities		0	0
Recurring \| Energy derivative contracts
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		1,020	670
Derivative liabilities		1,006	662
Recurring \| Energy derivative contracts \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities		0	0
Recurring \| Energy derivative contracts \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		1,020	670
Derivative liabilities		1,006	662
Recurring \| Energy derivative contracts \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities		0	0
Recurring \| Foreign exchange contracts
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		53	19
Derivative liabilities		45	16
Recurring \| Foreign exchange contracts \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities		0	0
Recurring \| Foreign exchange contracts \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		53	19
Derivative liabilities		45	16
Recurring \| Foreign exchange contracts \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities		0	0
Recurring \| Other financial derivative
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative liabilities		12	13
Recurring \| Other financial derivative \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative liabilities		0	0
Recurring \| Other financial derivative \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative liabilities		0	0
Recurring \| Other financial derivative \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Total liabilities at fair value		12	13
Recurring \| Deferred compensation plan assets
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Deferred compensation plan assets		92	113
Recurring \| Deferred compensation plan assets \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Deferred compensation plan assets		92	113
Recurring \| Deferred compensation plan assets \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Deferred compensation plan assets		0	0
Recurring \| Deferred compensation plan assets \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Deferred compensation plan assets		0	0
Recurring \| Equity securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Equity securities		44	62
Recurring \| Equity securities \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Equity securities		44	62
Recurring \| Equity securities \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Equity securities		0	0
Recurring \| Equity securities \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Equity securities		0	0
Recurring \| U.S. Treasury and other U.S. government agency securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		2,664	2,993
Recurring \| U.S. Treasury and other U.S. government agency securities \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		2,664	2,993
Recurring \| U.S. Treasury and other U.S. government agency securities \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		0	0
Recurring \| U.S. Treasury and other U.S. government agency securities \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale		0	0
Recurring \| Residential mortgage-backed securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	11,655	13,288
Recurring \| Residential mortgage-backed securities \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	0	0
Recurring \| Residential mortgage-backed securities \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	11,655	13,288
Recurring \| Residential mortgage-backed securities \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	0	0
Recurring \| Commercial Mortgage Backed Securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	4,693	705
Recurring \| Commercial Mortgage Backed Securities \| Level 1
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	0	0
Recurring \| Commercial Mortgage Backed Securities \| Level 2
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	4,693	705
Recurring \| Commercial Mortgage Backed Securities \| Level 3
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Investment Securities, Available-for-sale	[1]	$ 0	$ 0

[1]Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

Fair Value Measurements (Change

Fair Value Measurements (Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Interest rate contracts
Balance at beginning of period		$ 26	$ 39
Realized gains (losses) recorded in earnings	[1]	0	0
Unrealized gains (losses) recorded in earnings	[1]	0	(13)
Settlements		(26)	0
Balance at end of period		0	26
Other financial derivative
Balance at beginning of period		(13)	(11)
Realized gains (losses) recorded in earnings	[1]	0	0
Unrealized gains (losses) recorded in earnings	[1]	1	(2)
Settlements		0	0
Balance at end of period		$ (12)	$ (13)

[1]Realized and unrealized gains and losses due to changes in fair value recorded in other noninterest income on the Consolidated Statements of Income.

Fair Value Measurements (Asse_2

Fair Value Measurements (Assets And Liabilities Recorded At Fair Value On A Nonrecurring Basis) (Details) - Nonrecurring - Level 3 - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Loans	$ 66
Other Real Estate	9
Total assets at fair value	75	$ 150
Commercial borrower \| Domestic loans
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Loans	53	125
Commercial borrower \| Non-US
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Loans		4
Commercial borrower \| Commercial mortgage loans \| Domestic loans
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Loans	11	17
Commercial borrower \| Construction \| Domestic loans
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Loans	$ 2	$ 4

Fair Value Measurements (Estima

Fair Value Measurements (Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value In Their Entirety On A Recurring Basis) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Cash and due from banks		$ 1,758	$ 1,236
Interest-bearing deposits with banks		4,524	21,443
Total loans, net of allowance for loan losses		52,792	48,697
Demand deposits (noninterest-bearing)		39,945	45,800
Customer certificates of deposit		1,762	1,973
Other time deposits		124	0
Total deposits		71,397	82,339
Short-term borrowings		3,211	0
Total medium- and long-term debt		3,024	2,796
Carrying Amount
Cash and due from banks		1,758	1,236
Interest-bearing deposits with banks		4,524	21,443
Other short-term investments		19	16
Loans held-for-sale		2	6
Total loans, net of allowance for loan losses	[1]	52,792	48,697
Customers' liability on acceptances outstanding		3	5
Restricted equity investments		223	92
Nonmarketable equity securities	[2]	5	5
Demand deposits (noninterest-bearing)		39,945	45,800
Interest-bearing deposits		29,566	34,566
Customer certificates of deposit		1,762	1,973
Other time deposits		124
Total deposits		71,397	82,339
Short-term borrowings		3,211
Acceptances outstanding		3	5
Total medium- and long-term debt		3,024	2,796
Credit-related financial instruments		(79)	(59)
Estimated Fair Value
Cash and due from banks		1,758	1,236
Interest-bearing deposits with banks		4,524	21,443
Other short-term investments		19	16
Loans held-for-sale		2	6
Total loans, net of allowance for loan losses	[1]	50,964	49,127
Customers' liability on acceptances outstanding		3	5
Restricted equity investments		223	92
Nonmarketable equity securities	[2]	12	10
Demand deposits (noninterest-bearing)		39,945	45,800
Interest-bearing deposits		29,566	34,566
Customer certificates of deposit		1,719	1,968
Other time deposits		124
Total deposits		71,354	82,334
Short-term borrowings		3,211
Acceptances outstanding		3	5
Total medium- and long-term debt		3,071	2,854
Credit-related financial instruments		(79)	(59)
Level 1 \| Estimated Fair Value
Cash and due from banks		1,758	1,236
Interest-bearing deposits with banks		4,524	21,443
Other short-term investments		19	16
Loans held-for-sale		0	0
Total loans, net of allowance for loan losses	[1]	0	0
Customers' liability on acceptances outstanding		3	5
Restricted equity investments		223	92
Demand deposits (noninterest-bearing)		0	0
Interest-bearing deposits		0	0
Customer certificates of deposit		0	0
Other time deposits		0
Total deposits		0	0
Short-term borrowings		3,211
Acceptances outstanding		3	5
Total medium- and long-term debt		0	0
Credit-related financial instruments		0	0
Level 2 \| Estimated Fair Value
Cash and due from banks		0	0
Interest-bearing deposits with banks		0	0
Other short-term investments		0	0
Loans held-for-sale		2	6
Total loans, net of allowance for loan losses	[1]	0	0
Customers' liability on acceptances outstanding		0	0
Restricted equity investments		0	0
Demand deposits (noninterest-bearing)		39,945	45,800
Interest-bearing deposits		29,566	34,566
Customer certificates of deposit		1,719	1,968
Other time deposits		124
Total deposits		71,354	82,334
Short-term borrowings		0
Acceptances outstanding		0	0
Total medium- and long-term debt		3,071	2,854
Credit-related financial instruments		0	0
Level 3 \| Estimated Fair Value
Cash and due from banks		0	0
Interest-bearing deposits with banks		0	0
Other short-term investments		0	0
Loans held-for-sale		0	0
Total loans, net of allowance for loan losses	[1]	50,964	49,127
Customers' liability on acceptances outstanding		0	0
Restricted equity investments		0	0
Demand deposits (noninterest-bearing)		0	0
Interest-bearing deposits		0	0
Customer certificates of deposit		0	0
Other time deposits		0
Total deposits		0	0
Short-term borrowings		0
Acceptances outstanding		0	0
Total medium- and long-term debt		0	0
Credit-related financial instruments		$ (79)	$ (59)

[1]Included $66 million and $150 million of loans recorded at fair value on a nonrecurring basis at December 31, 2022 and 2021, respectively.[2]Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) $ in Millions	12 Months Ended
Investment Securities (Narrative) (Details) $ in Millions	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Securities with no credit impairment in unrealized loss position	1,289
Loan interest receivable	$ 49	$ 36
Securities gains and losses	0	$ 0
Securities gains			$ 1
Securities losses			$ (1)
Carrying value of securities pledged	3,200
Pledged to the FHLB as collateral for potential future borrowings - investment securities	1,000
Collateral for potential future borrowings	2,200
Liabilities secured by pledged collateral	$ 1,000
U.S. Treasury and other U.S. government agency securities
Securities with no credit impairment in unrealized loss position	27
Residential mortgage-backed securities
Securities with no credit impairment in unrealized loss position	1,008
Commercial Mortgage Backed Securities
Securities with no credit impairment in unrealized loss position	254

Investment Securities (Summary

Investment Securities (Summary Of Investment Securities) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Investment securities available-for-sale, Amortized Cost		$ 22,045	$ 17,116
Investment securities available-for-sale, Gross Unrealized Gains		0	91
Investment securities available-for-sale, Gross Unrealized Losses		3,033	221
Investment securities available-for-sale, Fair Value		19,012	16,986
U.S. Treasury and other U.S. government agency securities
Investment securities available-for-sale, Amortized Cost		2,810	3,010
Investment securities available-for-sale, Gross Unrealized Gains		0	22
Investment securities available-for-sale, Gross Unrealized Losses		146	39
Investment securities available-for-sale, Fair Value		2,664	2,993
Residential mortgage-backed securities
Investment securities available-for-sale, Amortized Cost	[1]	13,983	13,397
Investment securities available-for-sale, Gross Unrealized Gains	[1]	0	67
Investment securities available-for-sale, Gross Unrealized Losses	[1]	2,328	176
Investment securities available-for-sale, Fair Value	[1]	11,655	13,288
Commercial Mortgage Backed Securities
Investment securities available-for-sale, Amortized Cost	[1]	5,252	709
Investment securities available-for-sale, Gross Unrealized Gains	[1]	0	2
Investment securities available-for-sale, Gross Unrealized Losses	[1]	559	6
Investment securities available-for-sale, Fair Value	[1]	$ 4,693	$ 705

[1]Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

Investment Securities (Summar_2

Investment Securities (Summary Of Investment Securities In Unrealized Loss Positions) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Less than 12 Months, Fair Value		$ 8,504	$ 8,008
Less than 12 Months, Unrealized Losses		771	140
12 Months or more, Fair Value		10,506	2,462
12 Months or more, Unrealized Losses		2,262	81
Total, Fair Value		19,010	10,470
Total, Unrealized Losses		3,033	221
U.S. Treasury and other U.S. government agency securities
Less than 12 Months, Fair Value		996	465
Less than 12 Months, Unrealized Losses		5	6
12 Months or more, Fair Value		1,668	1,334
12 Months or more, Unrealized Losses		141	33
Total, Fair Value		2,664	1,799
Total, Unrealized Losses		146	39
Residential mortgage-backed securities
Less than 12 Months, Fair Value	[1]	3,500	7,197
Less than 12 Months, Unrealized Losses	[1]	361	128
12 Months or more, Fair Value	[1]	8,153	1,128
12 Months or more, Unrealized Losses	[1]	1,967	48
Total, Fair Value	[1]	11,653	8,325
Total, Unrealized Losses	[1]	2,328	176
Commercial Mortgage Backed Securities
Less than 12 Months, Fair Value	[1]	4,008	346
Less than 12 Months, Unrealized Losses	[1]	405	6
12 Months or more, Fair Value	[1]	685	0
12 Months or more, Unrealized Losses	[1]	154	0
Total, Fair Value	[1]	4,693	346
Total, Unrealized Losses	[1]	$ 559	$ 6

[1]Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

Investment Securities (Contract

Investment Securities (Contractual Maturity Distribution Of Debt Securities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Investment securities available-for-sale, Amortized Cost	$ 22,045	$ 17,116
Investment Securities, Available-for-sale	19,012	$ 16,986
Debt securities
Available-for-sale, Within one year, Amortized Cost	1,103
Available-for-sale, After one year through five years, Amortized Cost	1,943
Available-for-sale, After five years through ten years, Amortized Cost	5,518
Available-for-sale, After ten years, Amortized Cost	13,481
Investment securities available-for-sale, Amortized Cost	22,045
Available-for-sale, Within one year, Fair Value	1,093
Available-for-sale, After one year through five years, Fair Value	1,797
Available-for-sale, After five years through ten years, Fair Value	4,946
Available-for-sale, After ten years, Fair Value	11,176
Investment Securities, Available-for-sale	$ 19,012

Credit Quality And Allowance _3

Credit Quality And Allowance For Credit Losses (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loan interest receivable	$ 261	$ 120
Financing Receivable, Nonaccrual, Interest Income	12	11	$ 7
Foreclosed property	$ 0	1
Retail loans secured by residential real estate in process of foreclosure		$ 0
Principal deferrals
Minimum period loan terms were extended	90 days	90 days
Subsequent default during period	$ 6	$ 0
Interest Rate Reductions
Minimum period loan terms were extended	90 days	90 days
Subsequent default during period	$ 0	$ 0

Credit Quality And Allowance _4

Credit Quality And Allowance For Credit Losses (Aging Analysis Of Loans) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		$ 401	$ 180
Nonaccrual loans		240	264
Current Loans	[1]	52,761	48,841
Total loans		53,402	49,285
30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		341	118
60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		37	35
90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		23	27
Real estate construction
Financing Receivable, Past Due [Line Items]
Total loans		3,105	2,948
Real estate construction \| Other Business Lines Member
Financing Receivable, Past Due [Line Items]
Total loans	[2]	600	557
Commercial mortgage
Financing Receivable, Past Due [Line Items]
Total loans		13,306	11,255
Commercial mortgage \| Other Business Lines Member
Financing Receivable, Past Due [Line Items]
Total loans	[2]	8,625	7,917
Business loans \| Commercial borrower
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		366	132
Nonaccrual loans		171	216
Current Loans	[1]	48,740	45,069
Total loans		49,277	45,417
Business loans \| Commercial borrower \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		310	78
Business loans \| Commercial borrower \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		33	31
Business loans \| Commercial borrower \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		23	23
Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		271	59
Nonaccrual loans		142	173
Current Loans	[1]	30,496	29,134
Total loans		30,909	29,366
Business loans \| Commercial borrower \| Domestic loans \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		238	35
Business loans \| Commercial borrower \| Domestic loans \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		13	18
Business loans \| Commercial borrower \| Domestic loans \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		20	6
Business loans \| Commercial borrower \| International loans
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		9	14
Nonaccrual loans		3	5
Current Loans	[1]	1,185	1,189
Total loans		1,197	1,208
Business loans \| Commercial borrower \| International loans \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	5
Business loans \| Commercial borrower \| International loans \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		9	8
Business loans \| Commercial borrower \| International loans \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	1
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		2	16
Nonaccrual loans		3	6
Current Loans	[1]	3,100	2,926
Total loans		3,105	2,948
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		2	15
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	1
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	0
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Commercial Real Estate business line
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	0	0
Nonaccrual loans	[3]	0	0
Current Loans	[1],[3]	2,505	2,391
Total loans	[3]	2,505	2,391
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Commercial Real Estate business line \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	0	0
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Commercial Real Estate business line \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	0	0
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Commercial Real Estate business line \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	0	0
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Other business lines
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	2	16
Nonaccrual loans	[2]	3	6
Current Loans	[1],[2]	595	535
Total loans	[2]	600	557
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Other business lines \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	2	15
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Other business lines \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	0	1
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Other business lines \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	0	0
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		78	38
Nonaccrual loans		23	32
Current Loans	[1]	13,205	11,185
Total loans		13,306	11,255
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		64	18
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		11	4
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		3	16
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Commercial Real Estate business line
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	6	0
Nonaccrual loans	[3]	1	1
Current Loans	[1],[3]	4,674	3,337
Total loans	[3]	4,681	3,338
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Commercial Real Estate business line \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	0	0
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Commercial Real Estate business line \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	6	0
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Commercial Real Estate business line \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[3]	0	0
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Other business lines
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	72	38
Nonaccrual loans	[2]	22	31
Current Loans	[1],[2]	8,531	7,848
Total loans	[2]	8,625	7,917
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Other business lines \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	64	18
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Other business lines \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	5	4
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Other business lines \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing	[2]	3	16
Business loans \| Commercial borrower \| Lease financing \| Domestic loans
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		6	5
Nonaccrual loans		0	0
Current Loans	[1]	754	635
Total loans		760	640
Business loans \| Commercial borrower \| Lease financing \| Domestic loans \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		6	5
Business loans \| Commercial borrower \| Lease financing \| Domestic loans \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	0
Business loans \| Commercial borrower \| Lease financing \| Domestic loans \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	0
Retail loans
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		35	48
Nonaccrual loans		69	48
Current Loans	[1]	4,021	3,772
Total loans		4,125	3,868
Retail loans \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		31	40
Retail loans \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		4	4
Retail loans \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	4
Retail loans \| Residential mortgage
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		22	4
Nonaccrual loans		53	36
Current Loans	[1]	1,739	1,731
Total loans		1,814	1,771
Retail loans \| Residential mortgage \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		22	4
Retail loans \| Residential mortgage \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	0
Retail loans \| Residential mortgage \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	0
Retail loans \| Consumer borrower
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		13	44
Nonaccrual loans		16	12
Current Loans	[1]	2,282	2,041
Total loans		2,311	2,097
Retail loans \| Consumer borrower \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		9	36
Retail loans \| Consumer borrower \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		4	4
Retail loans \| Consumer borrower \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	4
Retail loans \| Consumer borrower \| Home equity
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		7	7
Nonaccrual loans		15	12
Current Loans	[1]	1,754	1,514
Total loans		1,776	1,533
Retail loans \| Consumer borrower \| Home equity \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		4	4
Retail loans \| Consumer borrower \| Home equity \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		3	3
Retail loans \| Consumer borrower \| Home equity \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		0	0
Retail loans \| Consumer borrower \| Other consumer
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		6	37
Nonaccrual loans		1	0
Current Loans	[1]	528	527
Total loans		535	564
Retail loans \| Consumer borrower \| Other consumer \| 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		5	32
Retail loans \| Consumer borrower \| Other consumer \| 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		1	1
Retail loans \| Consumer borrower \| Other consumer \| 90 days or more past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans Past due and still accruing		$ 0	$ 4

[1]Includes $22 million of loans with deferred payments not considered past due in accordance with the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) at December 31, 2021.[2]Primarily loans secured by owner-occupied real estate.[3]Primarily loans to real estate developers.

Credit Quality And Allowance _5

Credit Quality And Allowance For Credit Losses (Loans By Credit Quality Indicator) (Details) - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		$ 53,402		$ 49,285
Financing Receivable, Year One, Originated, Current Fiscal Year		9,268		9,453
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		8,160		5,533
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		4,120		4,367
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		2,992		3,021
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1,960		2,109
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		3,961		3,959
Financing Receivable, Revolving		22,889		20,782
Financing Receivable, Revolving, Converted to Term Loan		52		61
Real estate construction
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		3,105		2,948
Commercial mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		13,306		11,255
Business loans \| Commercial borrower
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		49,277		45,417
Financing Receivable, Year One, Originated, Current Fiscal Year		8,868		8,904
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		7,724		4,938
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		3,590		4,189
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		2,841		2,927
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1,890		1,990
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		3,548		3,488
Financing Receivable, Revolving		20,806		18,969
Financing Receivable, Revolving, Converted to Term Loan		10		12
Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		30,909		29,366
Financing Receivable, Year One, Originated, Current Fiscal Year		4,021		5,371
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		3,783		1,860
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		998		1,633
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		1,110		1,033
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		643		739
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		1,108		857
Financing Receivable, Revolving		19,236		17,861
Financing Receivable, Revolving, Converted to Term Loan		10		12
Business loans \| Commercial borrower \| Domestic loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	29,654		28,212
Financing Receivable, Year One, Originated, Current Fiscal Year	[1],[2]	3,946		5,270
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1],[2]	3,509		1,740
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	917	[2]	1,528
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	1,041		947
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	598		713
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	1,030		763
Financing Receivable, Revolving	[1]	18,604		17,241
Financing Receivable, Revolving, Converted to Term Loan	[1]	9		10
Business loans \| Commercial borrower \| Domestic loans \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	1,255		1,154
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	75		101
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	274		120
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	81		105
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	69		86
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	45		26
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	78		94
Financing Receivable, Revolving	[3]	632		620
Financing Receivable, Revolving, Converted to Term Loan	[3]	1		2
Business loans \| Commercial borrower \| International loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,197		1,208
Financing Receivable, Year One, Originated, Current Fiscal Year		329		401
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		161		151
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		58		106
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		88		34
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		22		5
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		24		24
Financing Receivable, Revolving		515		487
Financing Receivable, Revolving, Converted to Term Loan		0		0
Business loans \| Commercial borrower \| International loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	1,152		1,151
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	317		381
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	161		141
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	55		103
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	88		29
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	19		1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	14		16
Financing Receivable, Revolving	[1]	498		480
Financing Receivable, Revolving, Converted to Term Loan	[1]	0		0
Business loans \| Commercial borrower \| International loans \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	45		57
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	12		20
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	0		10
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	3		3
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	0		5
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	3		4
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	10		8
Financing Receivable, Revolving	[3]	17		7
Financing Receivable, Revolving, Converted to Term Loan	[3]	0		0
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		3,105		2,948
Financing Receivable, Year One, Originated, Current Fiscal Year		836		458
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,134		861
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		636		849
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		162		437
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		102		166
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		28		42
Financing Receivable, Revolving		207		135
Financing Receivable, Revolving, Converted to Term Loan		0		0
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	3,102		2,913
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	836		458
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	1,134		858
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	633		849
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	162		424
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	102		158
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	28		34
Financing Receivable, Revolving	[1]	207		132
Financing Receivable, Revolving, Converted to Term Loan	[1]	0		0
Business loans \| Commercial borrower \| Real estate construction \| Domestic loans \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	3		35
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	0		3
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	3		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	0		13
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	0		8
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	0		8
Financing Receivable, Revolving	[3]	0		3
Financing Receivable, Revolving, Converted to Term Loan	[3]	0		0
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		13,306		11,255
Financing Receivable, Year One, Originated, Current Fiscal Year		3,356		2,508
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		2,506		1,976
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		1,832		1,494
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		1,426		1,365
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1,081		1,041
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		2,257		2,385
Financing Receivable, Revolving		848		486
Financing Receivable, Revolving, Converted to Term Loan		0		0
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	13,139		11,007
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	3,349		2,491
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	2,501		1,932
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	1,825		1,444
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	1,394		1,343
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	1,050		1,018
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	2,182		2,298
Financing Receivable, Revolving	[1]	838		481
Financing Receivable, Revolving, Converted to Term Loan	[1]	0		0
Business loans \| Commercial borrower \| Commercial mortgage \| Domestic loans \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	167		248
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	7		17
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	5		44
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	7		50
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	32		22
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	31		23
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	75		87
Financing Receivable, Revolving	[3]	10		5
Financing Receivable, Revolving, Converted to Term Loan	[3]	0		0
Business loans \| Commercial borrower \| Lease financing \| Domestic loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		760		640
Financing Receivable, Year One, Originated, Current Fiscal Year		326		166
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		140		90
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		66		107
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		55		58
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		42		39
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		131		180
Financing Receivable, Revolving		0		0
Financing Receivable, Revolving, Converted to Term Loan		0		0
Business loans \| Commercial borrower \| Lease financing \| Domestic loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	734		618
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	316		166
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	140		88
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	64		97
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	47		50
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	37		38
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	130		179
Financing Receivable, Revolving	[1]	0		0
Financing Receivable, Revolving, Converted to Term Loan	[1]	0		0
Business loans \| Commercial borrower \| Lease financing \| Domestic loans \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	26		22
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	10		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	0		2
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	2		10
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	8		8
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	5		1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	1		1
Financing Receivable, Revolving	[3]	0		0
Financing Receivable, Revolving, Converted to Term Loan	[3]	0		0
Retail loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		4,125		3,868
Financing Receivable, Year One, Originated, Current Fiscal Year		400		549
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		436		595
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		530		178
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		151		94
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		70		119
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		413		471
Financing Receivable, Revolving		2,083		1,813
Financing Receivable, Revolving, Converted to Term Loan		42		49
Retail loans \| Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,814		1,771
Financing Receivable, Year One, Originated, Current Fiscal Year		331		448
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		398		527
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		480		165
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		142		85
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		69		118
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		394		428
Financing Receivable, Revolving		0		0
Financing Receivable, Revolving, Converted to Term Loan		0		0
Retail loans \| Residential mortgage \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	1,761		1,735
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	327		443
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	398		527
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	480		164
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	133		83
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	68		111
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	355		407
Financing Receivable, Revolving	[1]	0		0
Financing Receivable, Revolving, Converted to Term Loan	[1]	0		0
Retail loans \| Residential mortgage \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	53		36
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	4		5
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	0		1
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	9		2
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	1		7
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	39		21
Financing Receivable, Revolving	[3]	0		0
Financing Receivable, Revolving, Converted to Term Loan	[3]	0		0
Retail loans \| Consumer borrower
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		2,311		2,097
Financing Receivable, Year One, Originated, Current Fiscal Year		69		101
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		38		68
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		50		13
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		9		9
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1		1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		19		43
Financing Receivable, Revolving		2,083		1,813
Financing Receivable, Revolving, Converted to Term Loan		42		49
Retail loans \| Consumer borrower \| Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		1,776		1,533
Financing Receivable, Year One, Originated, Current Fiscal Year		0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		9		12
Financing Receivable, Revolving		1,725		1,472
Financing Receivable, Revolving, Converted to Term Loan		42		49
Retail loans \| Consumer borrower \| Home equity \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	1,757		1,516
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	9		11
Financing Receivable, Revolving	[1]	1,708		1,460
Financing Receivable, Revolving, Converted to Term Loan	[1]	40		45
Retail loans \| Consumer borrower \| Home equity \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	19		17
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	0		1
Financing Receivable, Revolving	[3]	17		12
Financing Receivable, Revolving, Converted to Term Loan	[3]	2		4
Retail loans \| Consumer borrower \| Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans		535		564
Financing Receivable, Year One, Originated, Current Fiscal Year		69		101
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		38		68
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		50		13
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		9		9
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1		1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		10		31
Financing Receivable, Revolving		358		341
Financing Receivable, Revolving, Converted to Term Loan		0		0
Retail loans \| Consumer borrower \| Other consumer \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[1]	531		560
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	69		101
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	38		68
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[1]	50		13
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[1]	8		9
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[1]	1		1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[1]	10		31
Financing Receivable, Revolving	[1]	355		337
Financing Receivable, Revolving, Converted to Term Loan	[1]	0		0
Retail loans \| Consumer borrower \| Other consumer \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	[3]	4		4
Financing Receivable, Year One, Originated, Current Fiscal Year	[3]	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	[3]	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	[3]	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	[3]	1		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	[3]	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	[3]	0		0
Financing Receivable, Revolving	[3]	3		4
Financing Receivable, Revolving, Converted to Term Loan	[3]	$ 0		$ 0

[1]Includes all loans not included in the categories of special mention, substandard or nonaccrual.[2]Includes Small Business Administration Paycheck Protection Program (PPP) loans of $35 million and $459 million at December 31, 2022 and 2021, respectively.[3]Includes loans with an internal rating of special mention, substandard loans for which the accrual of interest has not been discontinued and nonaccrual loans. Special mention loans have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. Accruing substandard loans have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans are also distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies. These categories are generally consistent with the "special mention" and "substandard" categories as defined by regulatory authorities. A minority of nonaccrual loans are consistent with the "doubtful" category.

Credit Quality And Allowance _6

Credit Quality And Allowance For Credit Losses (Changes In The Allowance For Loan Losses And Related Loan Amounts) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2022	Jan. 01, 2021	Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 618	$ 992	$ 668
Provision for loan losses	60	(384)	537
Balance at end of period	$ 661	$ 618	$ 992
Allowance as a percentage of total loans	1.24%	1.26%	1.90%
Cumulative effect of change in accounting principle
Financing Receivable, Allowance for Credit Loss [Line Items]
Reduction in business loans allowance for credit losses				$ 0	$ 0	$ (42)
Increase in retail loans allowance for credit losses				0	0	25
Day-one decrease in the overall allowance for credit losses				$ 0	$ 0	$ (17)
Financing Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 588	$ 948	$ 637
Loan charge-offs	(68)	(70)	(238)
Recoveries on loans previously charged-off	51	80	42
Net loan (charge-offs) recoveries	(17)	10	(196)
Provision for loan losses	39	(370)	524
Balance at end of period	$ 610	$ 588	$ 948
Allowance as a percentage of total loans	1.14%	1.19%	1.81%
Unused Commitments to Extend Credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 30	$ 44	$ 31
Provision for loan losses	21	(14)	13
Balance at end of period	51	30	44
Business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	555	930	629
Provision for loan losses	44	(384)	538
Balance at end of period	$ 581	$ 555	$ 930
Allowance as a percentage of total loans	1.18%	1.22%	1.93%
Business loans \| Financing Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 531	$ 895	$ 601
Loan charge-offs	(65)	(67)	(233)
Recoveries on loans previously charged-off	47	76	38
Net loan (charge-offs) recoveries	(18)	9	(195)
Provision for loan losses	28	(373)	531
Balance at end of period	$ 541	$ 531	$ 895
Allowance as a percentage of total loans	1.10%	1.17%	1.85%
Business loans \| Unused Commitments to Extend Credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 24	$ 35	$ 28
Provision for loan losses	16	(11)	7
Balance at end of period	40	24	35
Retail loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	63	62	39
Provision for loan losses	16	0	(1)
Balance at end of period	$ 80	$ 63	$ 62
Allowance as a percentage of total loans	1.96%	1.63%	1.55%
Retail loans \| Financing Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 57	$ 53	$ 36
Loan charge-offs	(3)	(3)	(5)
Recoveries on loans previously charged-off	4	4	4
Net loan (charge-offs) recoveries	1	1	(1)
Provision for loan losses	11	3	(7)
Balance at end of period	$ 69	$ 57	$ 53
Allowance as a percentage of total loans	1.67%	1.47%	1.32%
Retail loans \| Unused Commitments to Extend Credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at beginning of period	$ 6	$ 9	$ 3
Provision for loan losses	5	(3)	6
Balance at end of period	$ 11	$ 6	$ 9

Credit Quality And Allowance _7

Credit Quality And Allowance For Credit Losses (Nonaccrual Loans) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		$ 140	$ 60
Nonaccrual Loans with Related Allowance		100	204
Total Nonaccrual Loans		240	264
Business loans \| Commercial borrower
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		71	12
Nonaccrual Loans with Related Allowance		100	204
Total Nonaccrual Loans		171	216
Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		64	8
Nonaccrual Loans with Related Allowance		78	165
Total Nonaccrual Loans		142	173
Business loans \| Commercial borrower \| Non-US
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		3	0
Nonaccrual Loans with Related Allowance		0	5
Total Nonaccrual Loans		3	5
Retail loans
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		69	48
Nonaccrual Loans with Related Allowance		0	0
Total Nonaccrual Loans		69	48
Retail loans \| Consumer borrower
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		16
Nonaccrual Loans with Related Allowance		0
Total Nonaccrual Loans		16	12
Real estate construction \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Impaired [Line Items]
Total Nonaccrual Loans		3	6
Real estate construction \| Commercial Real Estate business line \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Impaired [Line Items]
Total Nonaccrual Loans	[1]	0	0
Real estate construction \| Other business lines \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance	[2]	0	0
Nonaccrual Loans with Related Allowance	[2]	3	6
Total Nonaccrual Loans	[2]	3	6
Commercial mortgage \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		4	4
Nonaccrual Loans with Related Allowance		19	28
Total Nonaccrual Loans		23	32
Commercial mortgage \| Commercial Real Estate business line \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance	[1]	0	0
Nonaccrual Loans with Related Allowance	[1]	1	1
Total Nonaccrual Loans	[1]	1	1
Commercial mortgage \| Other business lines \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance	[2]	4	4
Nonaccrual Loans with Related Allowance	[2]	18	27
Total Nonaccrual Loans	[2]	22	31
Residential mortgage \| Retail loans
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		53	36
Nonaccrual Loans with Related Allowance		0	0
Total Nonaccrual Loans		53	36
Home equity \| Retail loans \| Consumer borrower
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		15	12
Nonaccrual Loans with Related Allowance		0	0
Total Nonaccrual Loans		15	12
Other consumer \| Retail loans \| Consumer borrower
Financing Receivable, Impaired [Line Items]
Nonaccrual Loans with No Related Allowance		1
Nonaccrual Loans with Related Allowance		0
Total Nonaccrual Loans		$ 1	$ 0

[1]Primarily loans to real estate developers.[2]Primarily loans secured by owner-occupied real estate.

Credit Quality And Allowance _8

Credit Quality And Allowance For Credit Losses Foreclosed Properties (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Nonaccrual Loans [Abstract]
Foreclosed property	$ 0	$ 1

Credit Quality And Allowance _9

Credit Quality And Allowance For Credit Losses Credit Quality And Allowance For Credit Losses (Troubled Debt Restructuring Subsequent Default) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	[1]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		$ 73	$ 10
Business loans \| Commercial borrower
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		43	8
Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		26	8
Business loans \| Real estate construction \| Commercial borrower \| Domestic loans \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[2]	3	0
Business loans \| Commercial mortgage \| Commercial borrower \| Domestic loans \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[2]	14	0
Retail loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		30	2
Retail loans \| Consumer borrower
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		3	2
Retail loans \| Residential mortgage \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		27	0
Retail loans \| Home equity \| Consumer borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[3]	2	2
Retail loans \| Other consumer \| Consumer borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		1	0
Principal deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[4]	44	8
Principal deferrals \| Business loans \| Commercial borrower
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[4]	43	8
Principal deferrals \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[4]	26	8
Principal deferrals \| Business loans \| Real estate construction \| Commercial borrower \| Domestic loans \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[2],[4]	3	0
Principal deferrals \| Business loans \| Commercial mortgage \| Commercial borrower \| Domestic loans \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[2],[4]	14	0
Principal deferrals \| Retail loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[4]	1	0
Principal deferrals \| Retail loans \| Consumer borrower
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[4]	1	0
Principal deferrals \| Retail loans \| Residential mortgage \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[4]	0	0
Principal deferrals \| Retail loans \| Home equity \| Consumer borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[3],[4]	1	0
Principal deferrals \| Retail loans \| Other consumer \| Consumer borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[4]	0	0
Interest Rate Reductions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		29	2
Interest Rate Reductions \| Business loans \| Commercial borrower
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		0	0
Interest Rate Reductions \| Business loans \| Commercial borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		0	0
Interest Rate Reductions \| Business loans \| Real estate construction \| Commercial borrower \| Domestic loans \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[2]	0	0
Interest Rate Reductions \| Business loans \| Commercial mortgage \| Commercial borrower \| Domestic loans \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[2]	0	0
Interest Rate Reductions \| Retail loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		29	2
Interest Rate Reductions \| Retail loans \| Consumer borrower
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		2	2
Interest Rate Reductions \| Retail loans \| Residential mortgage \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		27	0
Interest Rate Reductions \| Retail loans \| Home equity \| Consumer borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period	[3]	1	2
Interest Rate Reductions \| Retail loans \| Other consumer \| Consumer borrower \| Domestic loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded balance of troubled debt restructuring modified during the period		$ 1	$ 0

[1]Under the provisions of the CARES Act, qualifying COVID-19-related modifications, primarily principal deferrals, were not considered TDRs during the year ended December 31, 2021.[2]Primarily loans secured by owner-occupied real estate.[3]Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt.[4]Primarily represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. Also includes commercial loans restructured in bankruptcy.

Significant Group Concentrati_3

Significant Group Concentrations of Credit Risk (Narrative) (Details)	Dec. 31, 2022
Risks and Uncertainties [Abstract]
Concentration risk threshold - Commercial Real Estate	31%
Concentration risk threshold - Auto	12%

Significant Group Concentrati_4

Significant Group Concentrations of Credit Risk Significant Group Concentrations of Credit Risk (Commercial Real Estate Exposure) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		$ 53,402	$ 49,285
Real estate construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		3,105	2,948
Commercial mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		13,306	11,255
Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		16,411	14,203
Total unused commitments		6,602	4,030
Commercial Real Estate business line \| Real estate construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[1]	2,505	2,391
Commercial Real Estate business line \| Commercial mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[1]	4,681	3,338
Other Business Lines Member \| Real estate construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[2]	600	557
Other Business Lines Member \| Commercial mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[2]	$ 8,625	$ 7,917

[1]Primarily loans to real estate developers.[2]Primarily loans secured by owner-occupied real estate.

Significant Group Concentrati_5

Significant Group Concentrations of Credit Risk Significant Group Concentrations of Credit Risk (Schedule of Automotive Industry Outstanding Loans and Total Exposure) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Concentration Risk [Line Items]
Total automotive loans	$ 6,435	$ 5,274
Total automotive exposure	12,938	12,706
Automotive Production
Concentration Risk [Line Items]
Total automotive loans	1,068	1,112	[1]
Total automotive exposure	2,028	2,041	[1]
Automotive Dealer
Concentration Risk [Line Items]
Total automotive loans	5,367	4,162
Total automotive exposure	$ 10,910	$ 10,665

[1]Excludes PPP loans

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Land	$ 81	$ 85
Buildings and improvements	737	852
Furniture and equipment	518	516
Total cost	1,336	1,453
Less: Accumulated depreciation and amortization	(936)	(999)
Premises and equipment	$ 400	$ 454

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Core deposit intangible
Amortization expense of core deposit intangible	$ 1	$ 1

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets Goodwill and Intangible Assets (Summary of Changes in Carrying Value of Goodwill) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Balance	$ 635	$ 635
Commercial Bank
Goodwill [Line Items]
Balance	473	473
Retail Bank
Goodwill [Line Items]
Balance	101	101
Wealth Management
Goodwill [Line Items]
Balance	$ 61	$ 61

Derivative And Credit-Related_3

Derivative And Credit-Related Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash received as collateral for derivative assets	$ 185
Fair value of securities pledged as collateral for derivative assets	202
Cash posted as collateral for derivative liabilities	4
Net cash flow hedge gains included in interest and fees on loans	(25)	$ 95	$ 70
Price alignment income	8
Net gain on open foreign currency positions	0	0	$ 0
Allowance for credit losses on lending-related commitments	51	30
Allowance for credit losses on lending-related commitments, unused commitments to extend credit	$ 44	27
Final year of expiration for outstanding letters of credit	2029
Risk participation agreements covering standby and commercial letters of credit	$ 107	98
Standby and commercial letters of credit outstanding	3,800	3,400
Carrying value of standby and commercial letters of credit included in accrued expenses and other liabilities	35	32
Deferred fees on standby and commercial letters of credit included in accrued expenses and other liabilities	28	29
Allowance for credit losses on lending-related commitments, amount related to standby and commercial letters of credit	7	3
Notional Amount of Derivative Credit Risk Participation Agreements	$ 951	1,100
Fair Value Amount of Derivative Credit Risk Participation Agreements		1
Maximum estimated exposure to credit risk participation agreements assuming 100% default		30
Weighted average remaining maturity of credit risk participation agreements, in years	3 years 9 months 18 days
Recurring
Total liabilities at fair value	$ 1,799	873
Level 3 \| Recurring
Total liabilities at fair value	$ 12	$ 13

Derivative And Credit-Related_4

Derivative And Credit-Related Financial Instruments (Schedule Of Derivative Instruments) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	$ 67,665	$ 41,638
Fair Value of Gross Derivative Assets		1,279	928
Fair Value of Gross Derivative Liabilities		1,695	747
Derivative assets, Netting adjustment - Offsetting derivative liabilities		(644)	(187)
Derivative liabilities, Netting adjustment - Offsetting derivative assets		(644)	(187)
Derivative assets, Netting adjustment - Cash collateral received		(180)	(15)
Derivative liabilities, Netting adjustment - Cash collateral posted		(4)	(452)
Net derivative assets included in consolidated balance sheets	[2]	455	726
Net derivative liabilities included in the consolidated balance sheet	[2]	1,047	108
Derivative assets, securities pledged as collateral		(70)	0
Derivative liabilities, securities pledged as collateral		(202)	(52)
Net derivative assets after deducting amounts not offset in the consolidated balance sheets		385	726
Net derivative liabilities after deducting amounts not offset in the consolidated balance sheets		845	56
Risk Management Purposes
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	30,142	11,152
Fair Value of Gross Derivative Assets		1	0
Fair Value of Gross Derivative Liabilities		53	2
Risk Management Purposes \| Derivatives designated as hedging instruments \| Swaps - fair value - receive fixed/pay floating \| Interest rate swap
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	3,150	2,650
Fair Value of Gross Derivative Assets		0	0
Fair Value of Gross Derivative Liabilities		0	0
Risk Management Purposes \| Derivatives designated as hedging instruments \| Swaps - cash flow - receive fixed/pay floating rate \| Interest rate swap
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1],[3]	26,600	8,050
Fair Value of Gross Derivative Assets	[3]	0	0
Fair Value of Gross Derivative Liabilities	[3]	50	0
Risk Management Purposes \| Derivatives used as economic hedges \| Foreign exchange spot, forwards and swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	392	452
Fair Value of Gross Derivative Assets		1	0
Fair Value of Gross Derivative Liabilities		3	2
Customer-initiated and other activities
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	37,523	30,486
Fair Value of Gross Derivative Assets		1,278	928
Fair Value of Gross Derivative Liabilities		1,642	745
Customer-initiated and other activities \| Interest rate caps and floors written
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	924	809
Fair Value of Gross Derivative Assets		0	0
Fair Value of Gross Derivative Liabilities		25	3
Customer-initiated and other activities \| Interest rate caps and floors purchased
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	924	809
Fair Value of Gross Derivative Assets		25	3
Fair Value of Gross Derivative Liabilities		0	0
Customer-initiated and other activities \| Interest rate swap
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	18,450	19,382
Fair Value of Gross Derivative Assets		181	236
Fair Value of Gross Derivative Liabilities		569	66
Customer-initiated and other activities \| Interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	20,298	21,000
Fair Value of Gross Derivative Assets		206	239
Fair Value of Gross Derivative Liabilities		594	69
Customer-initiated and other activities \| Energy caps and floors written
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	4,051	1,779
Fair Value of Gross Derivative Assets		0	0
Fair Value of Gross Derivative Liabilities		430	203
Customer-initiated and other activities \| Energy caps and floors purchased
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	4,051	1,779
Fair Value of Gross Derivative Assets		431	204
Fair Value of Gross Derivative Liabilities		0	0
Customer-initiated and other activities \| Energy swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	6,419	4,212
Fair Value of Gross Derivative Assets		589	466
Fair Value of Gross Derivative Liabilities		576	459
Customer-initiated and other activities \| Energy contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	14,521	7,770
Fair Value of Gross Derivative Assets		1,020	670
Fair Value of Gross Derivative Liabilities		1,006	662
Customer-initiated and other activities \| Foreign exchange spot, options and swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	2,704	1,716
Fair Value of Gross Derivative Assets		52	19
Fair Value of Gross Derivative Liabilities		$ 42	$ 14

[1]Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected on the Consolidated Balance Sheets.[2]Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets included credit valuation adjustments for counterparty credit risk of $2 million and $9 million at December 31, 2022 and 2021, respectively.[3]December 31, 2022 included $4.6 billion of forward starting swaps that will become effective on their contractual start dates in 2023 and 2024.

Derivative And Credit-Related_5

Derivative And Credit-Related Financial Instruments Derivative And Credit-Related Financial Instruments (Schedule of Effects of Fair Value Hedging on the Consolidated Statements of Comprehensive Income) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement [Line Items]
Total interest on medium- and long-term debt	[1]	$ 87	$ 35	$ 80
Swaps - fair value - receive fixed/pay floating \| Risk Management Purposes \| Interest Rate Swap [Member]
Statement [Line Items]
Interest rate contracts: Hedged items		112	102	109
Interest rate contracts: Derivatives designated as hedging instruments		$ (25)	$ (68)	$ (51)

[1]Includes the effects of hedging.

Derivative And Credit-Related_6

Derivative And Credit-Related Financial Instruments (Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps) (Details) - Variable rate loans - Swaps - cash flow - receive fixed/pay floating rate - Risk management purposes - Cash flow swap		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Weighted Average Remaining Maturity		4 years 7 months 6 days	2 years 4 months 24 days
Weighted Average Receive Rate	[1]	2.35%	1.84%
Weighted Average Pay Rate	[1],[2]	4.07%	0.10%

[1]Excludes forward starting swaps not effective as of the period shown. December 31, 2022 excluded $4.6 billion of forward starting swaps. December 31, 2021 excluded $3.0 billion of forward starting swaps.[2]Variable rates paid on receive fixed swaps designated as cash flow hedges are based on one-month LIBOR, BSBY or Secured Overnight Financing Rate (SOFR) rates in effect at December 31, 2022 and 2021. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily SOFR with a spread adjustment.

Derivative And Credit-Related_7

Derivative And Credit-Related Financial Instruments (Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Fair Value Swaps) (Details) - Interest Rate Swap [Member] - Swaps - fair value - receive fixed/pay floating - Risk management purposes - Medium- and long-term debt - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Carrying Value of Hedged Item	[1]	$ 3,024	$ 2,796
Weighted Average Remaining Maturity		3 years 10 months 24 days	3 years 7 months 6 days
Weighted Average Receive Rate		3.52%	3.68%
Weighted Average Pay Rate	[2]	4.90%	1.08%

[1]Included $(124) million and $145 million of cumulative hedging adjustments at December 31, 2022 and 2021, respectively, which included $4 million and $5 million, respectively, of hedging adjustment on a discontinued hedging relationship.[2]Floating rates paid on receive fixed swaps designated as fair value hedges are based on one-month LIBOR rates in effect at December 31, 2022 and 2021. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily SOFR with a spread adjustment.

Derivative And Credit-Related_8

Derivative And Credit-Related Financial Instruments (Schedule Of Net Gains Recognized In Income On Customer-Initiated Derivatives) (Details) - Customer-initiated and other activities - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	$ 109	$ 99	$ 67
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	34	36	26
Energy Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	28	18	1
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	$ 47	$ 45	$ 40

Derivative And Credit-Related_9

Derivative And Credit-Related Financial Instruments (Schedule Of Financial Instruments With Off-Balance Sheet Credit Risk) (Details) - Maximum - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Unused Commitments to Extend Credit
Loss contingency, estimate of possible loss, maximum	$ 34,817	$ 29,464
Commercial And Other \| Unused Commitments to Extend Credit
Loss contingency, estimate of possible loss, maximum	30,800	25,910
Bankcard, Revolving Check Credit And Home Equity Loan Commitments \| Unused Commitments to Extend Credit
Loss contingency, estimate of possible loss, maximum	4,017	3,554
Standby Letters Of Credit
Loss contingency, estimate of possible loss, maximum	3,712	3,378
Commercial Letters Of Credit
Loss contingency, estimate of possible loss, maximum	$ 39	$ 44

Derivative And Credit-Relate_10

Derivative And Credit-Related Financial Instruments (Summary Of Criticized Letters Of Credit) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Total criticized standby and commercial letters of credit	$ 37	$ 37
As a percentage of total outstanding standby and commercial letters of credit	1%	1.10%

Variable Interest Entities (V_3

Variable Interest Entities (VIEs) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Unfunded commitments to fund tax credit entities	$ 208
Amount of financial or other support not contractually required provided by the Corporation to VIEs	0	$ 0	$ 0
Low Income Housing Tax Credit Entities
Variable Interest Entity [Line Items]
Exposure to loss as a result of involvement with VIEs	475
Other Tax Credit Entities
Variable Interest Entity [Line Items]
Exposure to loss as a result of involvement with VIEs	$ 31

Variable Interest Entities (V_4

Variable Interest Entities (VIEs) (Impact Of VIEs On The Consolidated Statements Of Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Other noninterest income	$ 43	$ 99	$ 91
Provision for income taxes	325	322	124
Variable Interest Entity
Variable Interest Entity [Line Items]
Other noninterest income	0	1	1
Provision for income taxes	(14)	(14)	(12)
Low income housing tax credits \| Variable Interest Entity
Variable Interest Entity [Line Items]
Provision for income taxes, amortization of LIHTC investments	72	71	67
Provision for income taxes, affordable housing tax credits and other tax benefits	(68)	(68)	(63)
Other tax benefits related to tax credit entities \| Variable Interest Entity
Variable Interest Entity [Line Items]
Provision for income taxes, affordable housing tax credits and other tax benefits	$ (18)	$ (17)	$ (16)

Deposits Deposits (Narrative) (

Deposits Deposits (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deposits [Abstract]
Domestic certificates of deposit of $250,000 or more	$ 478	$ 627
Foreign office time deposits in denominations of $250,000 or more	$ 51	$ 50

Deposits Deposits (Schedule of

Deposits Deposits (Schedule of Maturities of Certificates of Deposit and Other Deposits with a Stated Maturity) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Deposits [Abstract]
2023	$ 1,789
2024	88
2025	24
2026	18
2027	13
Thereafter	5
Total	$ 1,937

Deposits Deposits (Schedule o_2

Deposits Deposits (Schedule of Maturities of Domestic Deposits of One Hundred Thousand or More) (Details) - Domestic certificates of deposit and other deposits - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Three Months or Less	$ 220	$ 436
Over three months to six months	136	314
Over six months to twelve months	590	319
Over twelve months	49	74
Total	$ 995	$ 1,143

Short-term Borrowings Short-t_2

Short-term Borrowings Short-term Borrowings (Narrative) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Short-Term Debt [Abstract]
Pledged to the FHLB as collateral for potential future borrowings - real estate related loans	$ 9,500
Pledged to the FHLB as collateral for potential future borrowings - investment securities	1,000
Potential future borrowings	7,200
Pledged loans to provide collateralized borrowing with the FRB	24,500
Available collateralized borrowing with the FRB	$ 19,600

Short-term Borrowings Short-t_3

Short-term Borrowings Short-term Borrowings (Summary of Short-term Borrowings) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Amount outstanding at year-end	$ 3,211	$ 0
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase
Short-term Debt [Line Items]
Amount outstanding at year-end	$ 11	$ 0	$ 0
Weighted average interest rate at year-end	4.32%	0%	0%
Maximum month-end balance during the year	$ 1,106	$ 2	$ 1,513
Average balance outstanding during the year	$ 82	$ 2	$ 30
Weighted average interest rate during the year	3.28%	0.06%	0.97%
Other Short-term Borrowings
Short-term Debt [Line Items]
Amount outstanding at year-end	$ 3,200	$ 0	$ 0
Weighted average interest rate at year-end	4.54%	0%	0%
Maximum month-end balance during the year	$ 3,200	$ 0	$ 1,250
Average balance outstanding during the year	$ 354	$ 0	$ 284
Weighted average interest rate during the year	4.08%	0%	0.25%

Medium- And Long-Term Debt (Nar

Medium- And Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Fixed-to-floating rate subordinated notes	$ 500
Fair value fixed-to-floating rate swap	2.67%
Unamortized debt issuance costs	$ 9	$ 7
Subsidiaries
Debt Instrument [Line Items]
Long-term Federal Home Loan Bank advances	$ 0	$ 0
5.332% subordinated notes due 2033 \| Subsidiaries
Debt Instrument [Line Items]
Debt Instrument, Maturity Year	2033
Stated interest rate	5.332%

Medium- And Long-Term Debt (Sch

Medium- And Long-Term Debt (Schedule Of Medium- And Long-Term Debt) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total medium- and long-term debt		$ 3,024	$ 2,796
Parent Company
Debt Instrument [Line Items]
Medium- and long-term notes		1,356	1,471
Total medium- and long-term debt		1,593	1,736
Subsidiaries
Debt Instrument [Line Items]
Subordinated notes		955	553
Total medium- and long-term debt		1,431	1,060
3.80% subordinated notes due 2026 \| Parent Company
Debt Instrument [Line Items]
Subordinated notes	[1]	$ 237	265
Stated interest rate		3.80%
Maturity year		2026
3.70% notes due 2023 \| Parent Company
Debt Instrument [Line Items]
Medium- and long-term notes	[1]	$ 841	877
Stated interest rate		3.70%
Maturity year		2023
4.00% notes due 2029 \| Parent Company
Debt Instrument [Line Items]
Medium- and long-term notes	[1]	$ 515	594
Stated interest rate		4%
Maturity year		2029
4.00% subordinated notes due 2025 \| Subsidiaries
Debt Instrument [Line Items]
Subordinated notes	[1]	$ 331	363
Stated interest rate		4%
Maturity year		2025
7.875% subordinated notes due 2026 \| Subsidiaries
Debt Instrument [Line Items]
Subordinated notes	[1]	$ 165	190
Stated interest rate		7.875%
Maturity year		2026
5.332% subordinated notes due 2033 \| Subsidiaries
Debt Instrument [Line Items]
Subordinated notes	[1]	$ 459	0
Stated interest rate		5.332%
Maturity year		2033
2.50% notes due 2024 \| Subsidiaries
Debt Instrument [Line Items]
Medium- and long-term notes	[1]	$ 476	$ 507
Stated interest rate		2.50%
Maturity year		2024

[1]The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate.

Medium- And Long-Term Debt Sche

Medium- And Long-Term Debt Schedule of Maturities of Medium- and Long-term Debt (Details) $ in Millions	Dec. 31, 2022 USD ($)
Debt Disclosure [Abstract]
2023	$ 850
2024	500
2025	350
2026	400
2027	0
Thereafter	1,050
Total	$ 3,150

Shareholders' Equity Shareholde

Shareholders' Equity Shareholders' Equity (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Depository Shares, Issued			400,000
Preferred Stock, Dividend Rate, Percentage			5.625%
Preferred Stock, Liquidation Preference, Value			$ 100,000
Preferred Stock, Liquidation Preference Per Share			$ 1,000
Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants			$ 400,000,000
Issuance of preferred stock	$ 0	$ 0	$ 394,000,000
Stock Option
Common stock shares reserved for future issuance	4,200,000
Common Stock
Shares repurchased under equity repurchase program	(400,000)	(9,500,000)	(3,400,000)
Equity Repurchase Program \| Common Stock
Shares repurchased under equity repurchase program	377,000	9,500,000	3,200,000
Average cost per share of shares repurchased under equity repurchase program	$ 92.61	$ 75.82	$ 58.55
Stock repurchased during the period	$ 35,000,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive (Loss) Income (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance at beginning of period, net of tax		$ (99)		$ 211		$ 65
Net unrealized holding (losses) gains arising during the period		(2,903)		(406)		191
Investment securities, Less: (Benefit) provision for income taxes		(683)		(96)		45
Investment securities, Change in net unrealized (losses) gains on investment securities, net of tax		(2,220)		(310)		146
Balance at end of period, net of tax		(2,319)		(99)		211
Cash Flow Hedges, Balance at beginning of period, net of tax		55	[1]	155	[1]	34
Net cash flow hedge (losses) gains arising during the period before income taxes		(1,329)		(35)		229
Cash flow hedges, Less: (Benefit) provision for income taxes		(313)		(8)		56
Change in net cash flow hedge (losses) gains arising during the period, net of tax		(1,016)		(27)		173
Net cash flow hedge (losses) gains recognized in interest and fees on loans before taxes		(25)		95		70
Benefit plans, Less: (Benefit) provision for income taxes		(6)		22		18
Reclassification adjustment for net cash flow hedge (losses) gains included in net income, net of tax		(19)		73		52
Change in net cash flow hedge (losses) gains, net of tax		(997)		(100)		121
Cash Flow Hedges, Balance at end of period, net of tax	[1]	(942)		55		155
Benefit plans, Balance at beginning of period, net of tax		(168)		(302)		(415)
Benefit plans, Actuarial (loss) gain arising during the period		(415)		159		128
Prior service credit arising during the period		0		1		0
Actuarial gain (loss) arising during the period		(415)		160		128
Benefit plans, Less: (Benefit) provision for income taxes		(98)		38		31
Benefit plans, Net defined benefit pension and other postretirement adjustment arising during the period, net of tax		(317)		122		97
Benefit plans, Amortization of actuarial net loss		28		40		47
Benefit plans, Amortization of prior service credit		(23)		(25)		(27)
Benefit plans, Total amounts recognized in other noninterest expenses		5		15		20
Benefit plans, Less: Provision for income taxes		1		3		4
Benefit plans, Adjustment for amounts recognized as components of net periodic benefit cost during the period, net of tax		4		12		16
Benefit plans, Change in defined benefit pension and other postretirement plans adjustment, net of tax		(313)		134		113
Benefit plans, Balance at end of period, net of tax		(481)		(168)		(302)
Total accumulated other comprehensive loss at end of period, net of tax		$ (3,742)		$ (212)		$ 64

[1]The Corporation expects to reclassify $428 million of losses, net of tax, from accumulated other comprehensive loss to earnings over the next twelve months if interest yield curves and notional amounts remain at December 31, 2022 levels.

Net Income Per Common Share (Ba

Net Income Per Common Share (Basic And Diluted Net Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 1,151	$ 1,168	$ 497
Less income allocated to participating securities	6	5	2
Preferred stock dividends	23	23	13
Net income attributable to common shares	$ 1,122	$ 1,140	$ 482
Basic average common shares	131	135	139
Basic net income per common share	$ 8.56	$ 8.45	$ 3.45
Basic average common shares	131	135	139
Net effect of the assumed exercise of stock awards	2	2	1
Diluted average common shares	133	137	140
Diluted net income per common share	$ 8.47	$ 8.35	$ 3.43

Net Income Per Common Share (Sc

Net Income Per Common Share (Schedule of Average Shares Excluded From Diluted Net Income Per Common Share Computation) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Average outstanding options	543,000	438,000	1,498,000
Stock Options \| Minimum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Range of exercise prices	$ 70.18	$ 79.01	$ 49.20
Stock Options \| Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Range of exercise prices	$ 95.25	$ 95.25	$ 95.25

Share-Based Compensation Shar_2

Share-Based Compensation Share-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Options exercised policy	10 years
Number of shares originally available for grant	7,700,000
Shares available for grant	4,500,000
Closing stock price per share	$ 66.85
Total intrinsic value of stock options exercised	$ 17	$ 29	$ 6
Shares in treasury	97,197,962	97,476,872
Restricted Stock
Total fair value of restricted stock awards that fully vested	$ 4	$ 8	17
Restricted Stock Units (RSUs)
Total fair value of restricted stock awards that fully vested	$ 19	$ 21	$ 12
Minimum \| Restricted Stock Units (RSUs)
Share-based compensation vesting period	3 years
Minimum \| Stock Options
Share-based compensation vesting period	1 year
Maximum \| Restricted Stock Units (RSUs)
Share-based compensation vesting period	5 years
Maximum \| Stock Options
Share-based compensation vesting period	4 years

Share-Based Compensation (Summa

Share-Based Compensation (Summary of Components of Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Total share-based compensation expense	$ 60	$ 41	$ 24
Related tax benefits recognized in net income	$ 14	$ 10	$ 6

Share-Based Compensation (Unrec

Share-Based Compensation (Unrecognized Compensation Expense) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Total unrecognized share-based compensation expense	$ 38
Weighted-average expected recognition period (in years)	2 years 1 month 6 days

Share-Based Compensation (Estim

Share-Based Compensation (Estimated Weighted-Average Grant-Date Fair Value Per Option Share and the Underlying Binomial Option-Pricing Model Assumptions) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Weighted-average grant-date fair value per option	$ 25.31	$ 18.36	$ 13.03
Risk-free interest rates	1.78%	1.05%	1.65%
Expected dividend yield	4%	4%	4.14%
Expected volatility factors of the market price of Comerica common stock	34%	39%	27%
Expected option life (in years)	8 years	7 years 9 months 18 days	8 years 4 months 24 days

Share-Based Compensation (Sum_2

Share-Based Compensation (Summary of the Corporation's Stock Option Activity and Related Information) (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Number of options outstanding at January 1, 2022 \| shares	2,244
Options granted \| shares	183
Options forfeited or expired \| shares	(32)
Options exercised \| shares	(387)
Number of options outstanding at December 31, 2022 \| shares	2,008
Number of options exercisable at December 31, 2022 \| shares	1,379
Options outstanding at January 1, 2022 (Weighted-average exercise price) \| $ / shares	$ 57.50
Options granted (Weighted-average exercise price) \| $ / shares	92.58
Options forfeited or expired (Weighted-average exercise price) \| $ / shares	76.55
Options exercised (Weighted-average exercise price) \| $ / shares	50.64
Options outstanding at December 31, 2022 Weighted-average exercise price) \| $ / shares	61.71
Options exercisable at December 31, 2022 (Weighted-average exercise price) \| $ / shares	$ 57.20
Weighted-average remaining contractual term in years at December 31, 2022	5 years 1 month 6 days
Weighted-average remaining contractual term in years exercisable at December 31, 2022	3 years 10 months 24 days
Aggregate intrinsic value outstanding at December 31, 2022 \| $	$ 22
Aggregate intrinsic value exercisable at December 31, 2022 \| $	$ 20

Share-Based Compensation (Sum_3

Share-Based Compensation (Summary of the Corporation's Restricted Stock Activity and Related Information) (Details) - Restricted Stock shares in Thousands	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Restricted shares outstanding at January 1, 2022 \| shares	41
Restricted shares forfeited \| shares	0
Restricted shares vested \| shares	(41)
Restricted shares outstanding at December 31, 2022 \| shares	0
Restricted shares outstanding at January 1, 2022 (Weighted-average grant-date fair value) \| $ / shares	$ 61.64
Restricted shares forfeited (Weighted-average grant-date fair value) \| $ / shares	0
Restricted shares vested (Weighted-average grant-date fair value) \| $ / shares	67.69
Restricted shares outstanding at December 31, 2022 (Weighted-average grant-date fair value) \| $ / shares	$ 0

Share-Based Compensation Summar

Share-Based Compensation Summary of the Corporation's Restricted Stock Unit Activity and Related Information (Details) - Restricted Stock Units (RSUs) shares in Thousands	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Service-Based Units
Restricted shares outstanding at January 1, 2022 \| shares	1,346
Non-vested shares granted \| shares	361
Restricted shares forfeited \| shares	(70)
Restricted shares vested \| shares	(232)	[1]
Restricted shares outstanding at December 31, 2022 \| shares	1,405
Restricted shares outstanding at January 1, 2022 (Weighted-average grant-date fair value) \| $ / shares	$ 59.18
Non-vested shares granted (Weighted-average grant-date fair value) \| $ / shares	84.14
Restricted shares forfeited (Weighted-average grant-date fair value) \| $ / shares	65.24
Restricted shares vested (Weighted-average grant-date fair value) \| $ / shares	65.36	[1]
Restricted shares outstanding at December 31, 2022 (Weighted-average grant-date fair value) \| $ / shares	$ 64.27
Performance-Based Units
Restricted shares outstanding at January 1, 2022 \| shares	816
Non-vested shares granted \| shares	182
Restricted shares forfeited \| shares	(34)
Restricted shares vested \| shares	(220)	[1]
Restricted shares outstanding at December 31, 2022 \| shares	744
Restricted shares outstanding at January 1, 2022 (Weighted-average grant-date fair value) \| $ / shares	$ 63.12
Non-vested shares granted (Weighted-average grant-date fair value) \| $ / shares	87.45
Restricted shares forfeited (Weighted-average grant-date fair value) \| $ / shares	70.40
Restricted shares vested (Weighted-average grant-date fair value) \| $ / shares	79.13	[1]
Restricted shares outstanding at December 31, 2022 (Weighted-average grant-date fair value) \| $ / shares	$ 64.01

[1]Includes performance-based units valued at zero, as they did not meet the minimum performance threshold.

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) $ in Millions	12 Months Ended
Employee Benefit Plans (Narrative) (Details) $ in Millions	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets in defined benefit pension plan	$ 2,499	$ 3,454
Estimated employer contributions for defined benefit plans for the next year	$ 0
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	100%
Percent of qualified earnings contributed by employee matched by the Corporation	4%
Defined contribution plan expense	$ 24	24	$ 24
Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated average life of pension plan in years	9
Fair value of plan assets in defined benefit pension plan	$ 2,508	3,462	3,350
Non-Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets in defined benefit pension plan	$ 0	$ 0	$ 0
Minimum \| Equity securities \| Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	40%
Minimum \| Debt securities \| Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	50%
Maximum \| Equity securities \| Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	50%
Maximum \| Debt securities \| Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	60%

Employee Benefit Plans (Reconci

Employee Benefit Plans (Reconciliations of Plan assets and the Projected Benefit Obligation, the Weighted-Average Assumptions Used to Determine Year-End Benefit Obligations, and the Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair value of plan assets at January 1		$ 3,454
Fair value of plan assets at December 31		2,499	$ 3,454
Actuarial (loss) gain arising during the period		(415)	159	$ 128
Qualified Plan
Fair value of plan assets at January 1		3,462	3,350
Actual return on plan assets		(777)	291	537
Plan participants' contributions		0	0
Benefits paid		(177)	(179)
Fair value of plan assets at December 31		2,508	3,462	3,350
Projected benefit obligation at January 1		2,214	2,327
Service cost	[1]	37	38	32
Interest cost		62	61	70
Actuarial (loss) gain arising during the period		(525)	(69)
Plan participants' contributions		0	0
Plan amendments	[2]	0	36
Projected benefit obligation at December 31		1,611	2,214	2,327
Accumulated benefit obligation		1,598	2,199
Funded Status at December 31	[3],[4]	$ 897	$ 1,248
Weighted-average assumptions, discount rate, percent		5.60%	2.96%
Weighted-average assumptions, rate of compensation increase, percent		4.25%	4%
Net actuarial loss		$ (638)	$ (205)
Amortization of prior service credit		33	48
Balance at December 31		$ (605)	$ (157)
Qualified Plan \| Minimum
Weighted-average assumptions, interest credit rating		399%	379%
Qualified Plan \| Maximum
Weighted-average assumptions, interest credit rating		525%	500%
Non-Qualified Plan
Fair value of plan assets at January 1		$ 0	$ 0
Actual return on plan assets		0	0
Plan participants' contributions		0	0
Benefits paid		(15)	(15)
Fair value of plan assets at December 31		0	0	0
Projected benefit obligation at January 1		207	252
Service cost	[1]	2	2	1
Interest cost		6	7	8
Actuarial (loss) gain arising during the period		(37)	(3)
Plan participants' contributions		0	0
Plan amendments	[2]	0	(36)
Projected benefit obligation at December 31		163	207	252
Accumulated benefit obligation		161	204
Funded Status at December 31	[3],[4]	$ (163)	$ (207)
Weighted-average assumptions, discount rate, percent		5.60%	2.96%
Weighted-average assumptions, rate of compensation increase, percent		4.25%	4%
Net actuarial loss		$ (46)	$ (92)
Amortization of prior service credit		38	47
Balance at December 31		$ (8)	$ (45)
Non-Qualified Plan \| Minimum
Weighted-average assumptions, interest credit rating		399%	379%
Non-Qualified Plan \| Maximum
Weighted-average assumptions, interest credit rating		525%	500%
Postretirement Benefit Plan
Fair value of plan assets at January 1		$ 53	$ 57
Actual return on plan assets		(4)	(1)	3
Plan participants' contributions		0	1
Benefits paid		(3)	(4)
Fair value of plan assets at December 31		46	53	57
Projected benefit obligation at January 1		31	35
Service cost		0	0
Interest cost		1	1	1
Actuarial (loss) gain arising during the period		(8)	(1)
Plan participants' contributions		0	1
Plan amendments	[2]	0	(1)
Projected benefit obligation at December 31		21	31	$ 35
Accumulated benefit obligation		21	31
Funded Status at December 31	[3],[4]	$ 25	$ 22
Weighted-average assumptions, discount rate, percent		5.71%	2.79%
Net actuarial loss		$ (10)	$ (11)
Amortization of prior service credit		2	2
Balance at December 31		$ (8)	$ (9)

[1]Included in salaries and benefits expense on the Consolidated Statements of Income.[2]The qualified defined benefit pension plan was amended in 2021 to include a flat dollar benefit for specified participants that would otherwise have been payable from the non-qualified defined benefit pension plan, resulting in a shift in projected benefit obligation from the non-qualified plan to the qualified plan.[3]Based on projected benefit obligation for defined benefit pension plans and accumulated benefit obligation for postretirement benefit plan.[4]The Corporation recognizes the overfunded and underfunded status of the plans in accrued income and other assets and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets.

Employee Benefit Plans (Schedul

Employee Benefit Plans (Schedule of Changes, Net of Tax, in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Actuarial gain (loss) arising during the period	$ (415)	$ 160	$ 128
Amortization of actuarial net loss	28	40	47
Amortization of prior service credit	(23)	(25)	(27)
Total recognized in other comprehensive loss	(410)	$ 175	$ 148
Qualified Plan
Actuarial gain (loss) arising during the period	(453)
Amortization of actuarial net loss	19
Amortization of prior service credit	(14)
Total recognized in other comprehensive loss	(448)
Non-Qualified Plan
Actuarial gain (loss) arising during the period	37
Amortization of actuarial net loss	9
Amortization of prior service credit	(9)
Total recognized in other comprehensive loss	37
Postretirement Benefit Plan
Actuarial gain (loss) arising during the period	1
Amortization of actuarial net loss	0
Amortization of prior service credit	0
Total recognized in other comprehensive loss	$ 1

Employee Benefit Plans Employee

Employee Benefit Plans Employee Benefit Plans (Net Periodic Defined Benefit Cost) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Net periodic defined benefit (credit) cost		$ (91)	$ (81)	$ (55)
Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1]	37	38	32
Interest cost		62	61	70
Expected return on plan assets		(201)	(202)	(185)
Amortization of prior service credit		(14)	(19)	(19)
Amortization of actuarial net loss		19	29	38
Total other components of net benefit credit or cost	[2]	(134)	(131)	(96)
Net periodic defined benefit (credit) cost		(97)	(93)	(64)
Actual return on plan assets		$ (777)	$ 291	$ 537
Actual rate of return on plan assets, percent		(23.02%)	8.92%	18.72%
Weighted-average assumptions, discount rate, percent		2.96%	2.71%	3.43%
Weighted-average assumptions, expected long-term return on plan assets, percent		6.50%	6.50%	6.50%
Weighted-average assumptions, rate of compensation increase, percent		4%	4%	4%
Non-Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1]	$ 2	$ 2	$ 1
Interest cost		6	7	8
Expected return on plan assets		0	0	0
Amortization of prior service credit		(9)	(6)	(8)
Amortization of actuarial net loss		9	11	9
Total other components of net benefit credit or cost	[2]	6	12	9
Net periodic defined benefit (credit) cost		8	14	$ 10
Actual return on plan assets		$ 0	$ 0
Weighted-average assumptions, discount rate, percent		2.96%	2.71%	3.43%
Weighted-average assumptions, rate of compensation increase, percent		4%	4%	4%
Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 0	$ 0
Interest cost		1	1	$ 1
Expected return on plan assets		(3)	(3)	(2)
Net periodic defined benefit (credit) cost		(2)	(2)	(1)
Actual return on plan assets		$ (4)	$ (1)	$ 3
Actual rate of return on plan assets, percent		(8.24%)	(2.25%)	6%
Weighted-average assumptions, discount rate, percent		2.79%	2.43%	3.26%
Weighted-average assumptions, expected long-term return on plan assets, percent		5%	5%	5%
Health care cost trend rate assumed	[3]		6%	6.25%
Rate to which the healthcare cost trend rate is assumed to decline (the ultimate trend rate), percent	[3]		4.50%	4.50%
Defined Benefit Plan Year That Reaches Ultimate Trend Rate In Current Expense	[3]		2027	2027

[1]Included in salaries and benefits expense on the Consolidated Statements of Income.[2]Included in other noninterest expenses on the Consolidated Statements of Income.[3]Beginning January 1, 2022, the healthcare cost trend assumption is no longer a relevant assumption due to the change from a self-insured plan to the Medicare and pre-65 individual marketplace with a funded Health Reimbursement Arrangement account.

Employee Benefit Plans (Fair Va

Employee Benefit Plans (Fair Values of the Corporation's Qualified Defined Benefit Pension Plan Investments Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair value of plan assets in qualified defined benefit pension plan, Excluding assets valued at net asset value	$ 1,269	$ 1,569
Fair value of plan assets in qualified defined benefit pension plan	2,499	3,454
Debt securities \| U.S. Treasury and other U.S. government agency securities
Fair value of plan assets in qualified defined benefit pension plan	534	599
Debt securities \| Corporate and municipal bonds and notes
Fair value of plan assets in qualified defined benefit pension plan	676	893
Debt securities \| Mortgage-backed secutities
Fair value of plan assets in qualified defined benefit pension plan	20	27
Debt securities \| Collective investments funds
Fair value of plan assets in qualified defined benefit pension plan	1,230	1,885
Private placements \| Private placements
Fair value of plan assets in qualified defined benefit pension plan	39	50
Level 1
Fair value of plan assets in qualified defined benefit pension plan, Excluding assets valued at net asset value	531	595
Level 1 \| Debt securities \| U.S. Treasury and other U.S. government agency securities
Fair value of plan assets in qualified defined benefit pension plan	531	595
Level 1 \| Debt securities \| Corporate and municipal bonds and notes
Fair value of plan assets in qualified defined benefit pension plan	0	0
Level 1 \| Debt securities \| Mortgage-backed secutities
Fair value of plan assets in qualified defined benefit pension plan	0	0
Level 1 \| Private placements \| Private placements
Fair value of plan assets in qualified defined benefit pension plan	0	0
Level 2
Fair value of plan assets in qualified defined benefit pension plan, Excluding assets valued at net asset value	699	924
Level 2 \| Debt securities \| U.S. Treasury and other U.S. government agency securities
Fair value of plan assets in qualified defined benefit pension plan	3	4
Level 2 \| Debt securities \| Corporate and municipal bonds and notes
Fair value of plan assets in qualified defined benefit pension plan	676	893
Level 2 \| Debt securities \| Mortgage-backed secutities
Fair value of plan assets in qualified defined benefit pension plan	20	27
Level 2 \| Private placements \| Private placements
Fair value of plan assets in qualified defined benefit pension plan	0	0
Level 3
Fair value of plan assets in qualified defined benefit pension plan, Excluding assets valued at net asset value	39	50
Level 3 \| Debt securities \| U.S. Treasury and other U.S. government agency securities
Fair value of plan assets in qualified defined benefit pension plan	0	0
Level 3 \| Debt securities \| Corporate and municipal bonds and notes
Fair value of plan assets in qualified defined benefit pension plan	0	0
Level 3 \| Debt securities \| Mortgage-backed secutities
Fair value of plan assets in qualified defined benefit pension plan	0	0
Level 3 \| Private placements \| Private placements
Fair value of plan assets in qualified defined benefit pension plan	$ 39	$ 50

Employee Benefit Plans (Summary

Employee Benefit Plans (Summary of Changes in the Corporation's Qualified Defined Benefit Pension Plan's Level 3 Investments Measured at Fair Value on a Recurring Basis) (Details) - Private placements - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance at beginning of period	$ 50	$ 58
Gains (Losses) Realized	(3)	2
Gains (Losses) Unrealized	(12)	(4)
Purchases	38	44
Sales	(34)	(50)
Balance at end of period	$ 39	$ 50

Employee Benefit Plans (Sched_2

Employee Benefit Plans (Schedule of Estimated Future Employer Contributions) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Qualified Plan
2023	$ 168
2024	140
2025	139
2026	143
2027	140
2028 - 2032	663
Non-Qualified Plan
2023	14
2024	15
2025	15
2026	15
2027	14
2028 - 2032	70
Postretirement Benefit Plan
2023	3	[1]
2024	3	[1]
2025	3	[1]
2026	2	[1]
2027	2	[1]
2028 - 2032	$ 8	[1]

[1]Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies.

Income Taxes And Tax-Related _3

Income Taxes And Tax-Related Items Income Taxes And Tax-Related Items (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income before income taxes	$ 1,476	$ 1,490	$ 621
Foreign-source income	48
Liability for tax-related interest and penalties	5	6
Unrecognized tax benefits that would impact the effective tax rate	13	14
Unrecognized Tax Benefits is Reasonably Possible, taxes	4
Unrecognized Tax Benefits, interest and penalties	3
Non-income tax benefit	4
Non-income tax benefit recognized in following year	7
Deferred Tax Assets, Operating Loss Carryforwards, Federal	4	3
State net operating loss carryforwards	2	3
Deferred tax assets, federal valuation allowance	4	3
Deferred tax assets, state valuation allowance	$ 1	$ 2
Minimum
Operating Loss Carryforwards, Expiration Date - Federal	2028
Operating Loss Carryforwards, Expiration Date - State	2023
Minimum \| California
Open Tax Year	2006
Maximum
Operating Loss Carryforwards, Expiration Date - Federal	2031
Operating Loss Carryforwards, Expiration Date - State	2041
Maximum \| California
Open Tax Year	2007

Income Taxes And Tax-Related _4

Income Taxes And Tax-Related Items Current and Deferred Components of the Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Current federal income tax	$ 296	$ 212	$ 171
Current foreign income tax	6	5	5
Current state and local income tax	50	26	30
Total current income tax	352	243	206
Deferred federal income tax	(24)	62	(73)
Deferred state and local income tax	(3)	17	(9)
Total deferred income tax	(27)	79	(82)
Provision for income taxes	$ 325	$ 322	$ 124

Income Taxes And Tax-Related _5

Income Taxes And Tax-Related Items Reconciliation of Expected Income Tax Expense at the Federal Statutory Rate to the Corporation's Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Tax based on federal statutory rate, amount	$ 310	$ 313	$ 130
Tax based on federal statutory rate, percent	21%	21%	21%
State income taxes, amount	$ 36	$ 35	$ 18
State income taxes, percent	2.50%	2.40%	2.90%
Affordable housing and historic credits, amount	$ (13)	$ (13)	$ (12)
Affordable housing and historic credits, percent	(0.90%)	(0.90%)	(1.90%)
Bank-owned life insurance, amount	$ (10)	$ (10)	$ (10)
Bank-owned life insurance, percent	(0.70%)	(0.60%)	(1.60%)
FDIC insurance expense, amount	$ 6	$ 5	$ 7
FDIC insurance expense, percent	0.40%	0.30%	1.10%
Employee Stock Transactions, amount	$ (3)	$ (3)	$ (1)
Employee Stock Transactions, percent	(0.20%)	(0.20%)	(0.20%)
Tax-related interest and penalties, amount	$ 0	$ 0	$ (2)
Tax-related interest and penalties, percent	0%	0%	(0.30%)
Other, amount	$ (1)	$ (5)	$ (6)
Other, percent	(0.10%)	(0.40%)	(1.00%)
Provision for income taxes, amount	$ 325	$ 322	$ 124
Provision for income taxes, percent	22%	21.60%	20%

Income Taxes And Tax-Related _6

Income Taxes And Tax-Related Items Reconciliation of the Beginning and Ending Amounts of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Balance at January 1	$ 18	$ 19	$ 17
(Decrease) increase as a result of tax positions taken during a prior period	(2)	1	1
Increase as a result of tax positions taken during the current period	3	3	2
Decreases related to settlements with tax authorities	(3)	(3)	(1)
Reduction as a result of expiration of statue of limitations	0	(2)	0
Balance at December 31	$ 16	$ 18	$ 19

Income Taxes And Tax-Related _7

Income Taxes And Tax-Related Items Tax Years for Significant Jurisdictions That Remain Subject to Examination (Details)	12 Months Ended
	Dec. 31, 2022
Federal \| Minimum
Open Tax Year	2019
Federal \| Maximum
Open Tax Year	2021
New York \| Minimum
Open Tax Year	2018
New York \| Maximum
Open Tax Year	2021
California \| Minimum
Open Tax Year	2006
Open tax years - second grouping	2018
California \| Maximum
Open Tax Year	2007
Open tax years - second grouping	2021

Income Taxes And Tax-Related _8

Income Taxes And Tax-Related Items Principal Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Allowance for depreciation	$ 0	$ 7
Allowance for loan losses	128	124
Deferred compensation	84	71
Deferred loan origination fees and costs	12	17
Net hedging losses	290	0
Net unrealized losses on investment securities available-for-sale	713	30
Operating lease liabilities	85	74
Other temporary differences, net	42	21
Total deferred tax asset before valuation allowance	1,354	344
Valuation allowance	(5)	(5)
Total deferred tax assets	1,349	339
Deferred tax liabilities:
Lease financing transactions	(31)	(49)
Defined benefit plans	(123)	(198)
Allowance for depreciation	(4)	0
Net hedging gains	0	(17)
Leasing right of use assets	(71)	(66)
Total deferred tax liabilities	(229)	(330)
Net deferred tax assets	$ 1,120	$ 9

Transactions with Related Par_2

Transactions with Related Parties Transactions with Related Parties (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Related Party Transactions [Abstract]
Loans attributed to persons who were related parties at beginning of period	$ 74
Loans attributed to persons who were related parties at end of period	57
New loans to related parties	270
Repayments on loans to related parties	$ 287

Regulatory Capital and Reserve

Regulatory Capital and Reserve Requirements Regulatory Capital and Reserve Requirements (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Dividends available to be paid to parent company with prior approval from bank regulatory agencies	$ 506
Dividends from bank subsidiaries	$ 1,000	$ 852	$ 498
Total risk-based capital	10%	10%
Tier 1 risk-based capital	6%	6%
Minimum
Capital conservation buffer	2.50%	2.50%
U.S. Banking Subsidiaries
Total risk-based capital	10%	10%
Tier 1 risk-based capital	8%	8%
CET1 risk-based capital	6.50%	6.50%
Leverage ratios	5%	5%

Regulatory Capital and Reserv_2

Regulatory Capital and Reserve Requirements Regulatory Capital and Reserve Requirements (Summary of Capital Position) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Minimum
Summary of Capital Position [Line Items]
CET 1 capital	$ 3,500	$ 3,100
Tier 1 capital	4,700	4,200
Total capital	$ 6,300	$ 5,600
CET 1 capital to risk-weighted assets	4.50%	4.50%
Tier 1 capital to risk-weighted assets	6%	6%
Total capital to risk-weighted assets	8%	8%
Tier 1 capital to average assets	4%	4%
Capital conservation buffer	2.50%	2.50%
Comerica Incorporated
Summary of Capital Position [Line Items]
CET 1 capital	$ 7,884	$ 7,064
Tier 1 capital	8,278	7,458
Total capital	9,817	8,608
Risk-weighted assets	78,871	69,708
Average assets (fourth quarter)	$ 86,726	$ 96,417
CET 1 capital to risk-weighted assets	10%	10.13%
Tier 1 capital to risk-weighted assets	10.50%	10.70%
Total capital to risk-weighted assets	12.45%	12.35%
Tier 1 capital to average assets	9.55%	7.74%
Capital conservation buffer	4.45%	4.35%
Comerica Bank
Summary of Capital Position [Line Items]
CET 1 capital	$ 7,801	$ 7,634
Tier 1 capital	7,801	7,634
Total capital	9,190	8,584
Risk-weighted assets	78,781	69,542
Average assets (fourth quarter)	$ 86,608	$ 96,216
CET 1 capital to risk-weighted assets	9.90%	10.98%
Tier 1 capital to risk-weighted assets	9.90%	10.98%
Total capital to risk-weighted assets	11.67%	12.34%
Tier 1 capital to average assets	9.01%	7.93%
Capital conservation buffer	3.67%	4.34%

Contingent Liabilities (Narrati

Contingent Liabilities (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Legal fees	$ 17	$ 14	$ 17
Pending Litigation \| Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	0
Pending Litigation \| Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 80

Strategic Lines of Business (Na

Strategic Lines of Business (Narrative) (Details)	12 Months Ended
Strategic Lines of Business (Narrative) (Details)	Dec. 31, 2022 segments
Segment Reporting [Abstract]
Number of Major Business Segments	3

Strategic Lines of Business (Bu

Strategic Lines of Business (Business Segment Financial Results) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net interest income (expense)		$ 2,466	$ 1,844	$ 1,911
Provision for credit losses		60	(384)	537
Noninterest income		1,068	1,123	1,001
Noninterest expenses		1,998	1,861	1,754
Provision for income taxes, amount		325	322	124
Net Income		1,151	1,168	497
Net credit-related (recoveries) charge-offs		17	(10)	196
Assets, average		87,272	90,152	81,146
Loans, average		50,460	49,083	51,631
Deposits, average		$ 75,481	$ 77,681	$ 65,038
Return on average assets	[1]	1.32%	1.30%	0.61%
Efficiency ratio	[2]	56.32%	62.42%	60.13%
Commercial Bank
Net interest income (expense)		$ 1,753	$ 1,574	$ 1,605
Provision for credit losses		32	(346)	495
Noninterest income		607	663	555
Noninterest expenses		963	870	813
Provision for income taxes, amount		313	384	184
Net Income		1,052	1,329	668
Net credit-related (recoveries) charge-offs		21	(12)	192
Assets, average		47,660	44,004	45,716
Loans, average		43,481	41,801	44,119
Deposits, average		$ 42,584	$ 45,602	$ 36,616
Return on average assets	[1]	2.21%	2.71%	1.46%
Efficiency ratio	[2]	40.69%	38.76%	37.63%
Retail Bank
Net interest income (expense)		$ 680	$ 565	$ 503
Provision for credit losses		11	(5)	7
Noninterest income		122	123	110
Noninterest expenses		689	645	607
Provision for income taxes, amount		22	5	(3)
Net Income		80	43	2
Net credit-related (recoveries) charge-offs		(1)	2	1
Assets, average		2,814	3,213	3,281
Loans, average		2,063	2,382	2,468
Deposits, average		$ 26,672	$ 25,682	$ 22,832
Return on average assets	[1]	0.29%	0.16%	0%
Efficiency ratio	[2]	85.31%	92.98%	98.52%
Wealth Management
Net interest income (expense)		$ 199	$ 166	$ 167
Provision for credit losses		9	(32)	35
Noninterest income		298	279	263
Noninterest expenses		348	317	295
Provision for income taxes, amount		33	36	22
Net Income		107	124	78
Net credit-related (recoveries) charge-offs		(3)	0	3
Assets, average		5,037	5,028	5,162
Loans, average		4,906	4,903	5,045
Deposits, average		$ 5,439	$ 5,218	$ 4,402
Return on average assets	[1]	1.83%	2.24%	1.51%
Efficiency ratio	[2]	70%	71.02%	68.47%
Finance
Net interest income (expense)		$ (187)	$ (471)	$ (384)
Provision for credit losses		0	0	0
Noninterest income		58	41	55
Noninterest expenses		1	1	2
Provision for income taxes, amount		(37)	(100)	(78)
Net Income		(93)	(331)	(253)
Net credit-related (recoveries) charge-offs		0	0	0
Assets, average		20,682	17,705	15,418
Loans, average		0	0	0
Deposits, average		591	965	1,026
Other
Net interest income (expense)		21	10	20
Provision for credit losses		8	(1)	0
Noninterest income		(17)	17	18
Noninterest expenses		(3)	28	37
Provision for income taxes, amount		(6)	(3)	(1)
Net Income		5	3	2
Net credit-related (recoveries) charge-offs		0	0	0
Assets, average		11,079	20,202	11,569
Loans, average		10	(3)	(1)
Deposits, average		$ 195	$ 214	$ 162

[1]Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.[2]Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net gains (losses) from securities, a derivative contract tied to the conversion rate of Visa Class B shares and changes in the value of shares obtained through monetization of warrants.

Parent Company Financial Stat_3

Parent Company Financial Statements Parent Company Financial Statements (Balance Sheets) (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Cash and due from subsidiary banks	$ 1,758	$ 1,236
Other short-term investments	157	197
Premises and equipment	400	454
Accrued income and other assets	6,763	5,603
Total assets	85,406	94,616
Total medium- and long-term debt	3,024	2,796
Accrued expenses and other liabilities	2,593	1,584
Total liabilities	$ 80,225	$ 86,719
Preferred Stock, No Par Value	$ 0	$ 0
Preferred Stock, Shares Authorized	4,000	4,000
Preferred Stock, Shares Issued	4,000	4,000
Fixed rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000 liquidation preference per share: Authorized - 4,000 shares, Issued - 4,000 shares at 12/31/2022 and 12/31/2021	$ 394	$ 394
Common stock, par value	$ 5	$ 5
Common stock, authorized shares	325,000,000	325,000,000
Common stock, issued shares	228,164,824	228,164,824
Common stock - $5 par value: Authorized - 325,000,000 shares; Issued - 228,164,824 shares	$ 1,141	$ 1,141
Capital surplus	2,220	2,175
Accumulated other comprehensive loss	(3,742)	(212)	$ 64
Retained earnings	$ 11,258	$ 10,494
Shares in treasury	97,197,962	97,476,872
Less cost of common stock in treasury - 97,197,962 shares at 12/31/22 and 97,476,872 shares at 12/31/21	$ (6,090)	$ (6,095)
Total shareholders' equity	5,181	7,897	$ 8,050	$ 7,327
Total liabilities and shareholders' equity	85,406	94,616
Parent Company
Condensed Financial Statements, Captions [Line Items]
Cash and due from subsidiary banks	1,810	1,105
Other short-term investments	92	113
Receivable due from subsidiary bank	150	150
Investments in subsidiaries, principally banks	4,853	8,278
Premises and equipment	0	1
Accrued income and other assets	191	265
Total assets	7,096	9,912
Total medium- and long-term debt	1,593	1,736
Accrued expenses and other liabilities	322	279
Total liabilities	1,915	2,015
Total liabilities and shareholders' equity	$ 7,096	$ 9,912

Parent Company Financial Stat_4

Parent Company Financial Statements Parent Company Financial Statements (Statements of Income) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]
Other interest income		$ 105	$ 27	$ 29
Total interest on medium- and long-term debt	[1]	87	35	80
Salaries and benefits expense		1,208	1,133	1,019
Other noninterest expenses		84	39	66
Benefit for income taxes		325	322	124
Net Income		1,151	1,168	497
Less income allocated to participating securities		6	5	2
Net income attributable to common shares		1,122	1,140	482
Parent Company
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiaries		1,067	849	498
Other interest income		13	1	4
Intercompany management fees		109	235	209
Total income		1,189	1,085	711
Total interest on medium- and long-term debt		47	20	30
Salaries and benefits expense		53	170	141
Other noninterest expenses		46	72	66
Total expenses		146	262	237
Income before benefit for income taxes and equity in undistributed earnings of subsidiaries		1,043	823	474
Benefit for income taxes		(3)	(6)	(6)
Income before equity in undistributed earnings of subsidiaries, principally banks		1,046	829	480
Equity in undistributed earnings of subsidiaries, principally banks		105	339	17
Net Income		1,151	1,168	497
Less income allocated to participating securities		6	5	2
Less preferred stock dividends		23	23	13
Net income attributable to common shares		$ 1,122	$ 1,140	$ 482

[1]Includes the effects of hedging.

Parent Company Financial Stat_5

Parent Company Financial Statements Parent Company Financial Statements (Statements of Cash Flows) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]
Net income	$ 1,151	$ 1,168	$ 497
Net periodic defined benefit credit	(91)	(81)	(55)
Share-based compensation expense	60	41	24
Benefit for deferred income taxes	(27)	79	(82)
Other, net	614	469	111
Net cash provided by operating activities	638	634	928
Other, net	82	70	79
Net cash provided by (used in) investing activities	(9,952)	1,723	(4,602)
Cash dividends paid on preferred stock	23	23	8
Repurchases of common stock	43	729	199
Cash dividends paid on common stock	353	369	375
Net cash used in financing activities	(7,083)	4,555	13,623
Net increase (decrease) in cash and cash equivalents	(16,397)	6,912	9,949
Interest paid	130	57	203
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income	1,151	1,168	497
Undistributed (earnings) of subsidiaries, principally banks	(105)	(339)	(17)
Net periodic defined benefit credit	2	5	4
Share-based compensation expense	22	19	11
Benefit for deferred income taxes	0	(2)	(1)
Other, net	24	3	2
Net cash provided by operating activities	1,094	854	496
Advance to subsidiary bank	0	(150)	0
Capital transactions with subsidiaries	0	0	(21)
Other, net	2	(1)	2
Net cash provided by (used in) investing activities	2	(151)	(19)
Issuances of preferred stock	0	0	394
Cash dividends paid on preferred stock	(23)	(23)	(8)
Repurchases of common stock	(43)	(729)	(199)
Cash dividends paid on common stock	(353)	(369)	(375)
Issuances of common stock under employee stock plans	28	34	4
Net cash used in financing activities	(391)	(1,087)	(184)
Net increase (decrease) in cash and cash equivalents	705	(384)	293
Cash and cash equivalents at beginning of period	1,105	1,489	1,196
Cash and cash equivalents at end of period	1,810	1,105	1,489
Interest paid	$ 41	$ 21	$ 33

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		$ 788	$ 796	$ 758
Other sources of noninterest income		280	327	243
Total noninterest income		1,068	1,123	1,001
Commercial Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		384	410	403
Other sources of noninterest income		223	253	152
Total noninterest income		607	663	555
Retail Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		115	115	100
Other sources of noninterest income		7	8	10
Total noninterest income		122	123	110
Wealth Management
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		288	271	255
Other sources of noninterest income		10	8	8
Total noninterest income		298	279	263
Finance & Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		1	0	0
Other sources of noninterest income		40	58	73
Total noninterest income		41	58	73
Card fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		273	298	270
Card fees \| Commercial Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		227	250	229
Card fees \| Retail Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		42	44	38
Card fees \| Wealth Management
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		4	4	3
Card fees \| Finance & Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Fiduciary income
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		233	231	209
Fiduciary income \| Commercial Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Fiduciary income \| Retail Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Fiduciary income \| Wealth Management
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		233	231	209
Fiduciary income \| Finance & Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		195	195	185
Service charges on deposit accounts \| Commercial Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		132	136	128
Service charges on deposit accounts \| Retail Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		57	54	52
Service charges on deposit accounts \| Wealth Management
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		6	5	5
Service charges on deposit accounts \| Finance & Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Commercial loan servicing fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[1]	18	19	18
Commercial loan servicing fees \| Commercial Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[1]	18	19	18
Commercial loan servicing fees \| Retail Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[1]	0	0	0
Commercial loan servicing fees \| Wealth Management
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[1]	0	0	0
Commercial loan servicing fees \| Finance & Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[1]	0	0	0
Brokerage fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		21	14	21
Brokerage fees \| Commercial Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Brokerage fees \| Retail Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Brokerage fees \| Wealth Management
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		21	14	21
Brokerage fees \| Finance & Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers		0	0	0
Other noninterest income
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[2]	48	39	55
Other noninterest income \| Commercial Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[2]	7	5	28
Other noninterest income \| Retail Bank
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[2]	16	17	10
Other noninterest income \| Wealth Management
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[2]	24	17	17
Other noninterest income \| Finance & Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue from contracts with customers	[2]	$ 1	$ 0	$ 0

[1]Included in commercial lending fees on the Consolidated Statements of Income.[2]Excludes derivative, warrant and other miscellaneous income.

Leases (Narrative) (Details)

Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Leases (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Sales-type and Direct Financing Leases, Interest Income	$ 21		$ 12	$ 13
Total lease receivables	$ 659	[1]	$ 464

[1]Excludes net investment in leveraged leases of $101 million.

Leases (Operating Leases) (Deta

Leases (Operating Leases) (Details) - USD ($) $ in Millions	12 Months Ended
Leases (Operating Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease expense	$ 68	$ 65	$ 64
Variable lease expense	17	15	16
Less sublease Income	(1)	(1)	(1)
Total lease expense	$ 84	$ 79	$ 79

Leases (Supplemental Balance Sh

Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Right-of-use (ROU) assets	$ 338	$ 317	$ 306
Operating lease liabilities	$ 406	$ 356	$ 344
Weighted average discount rate	3.53%	3.33%	3.61%
Weighted average lease term in years	9 years	8 years	8 years

Leases (Supplemental Cash Flow

Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating cash flows from operating activities		$ 66	$ 66	$ 65
ROU assets obtained in exchange for new lease liabilities	[1]	$ 80	$ 64	$ 28

[1]Includes a $24 million reduction to both ROU assets and lease liabilities for a partial termination related to the Company's Texas headquarters for the year ended December 31, 2022.

Leases (Contractual Maturities

Leases (Contractual Maturities of Operating Lease Liabilities) (Details) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2023	$ 63
2024	69
2025	63
2026	55
2027	45
Thereafter	185
Total contractual maturities	480
Less: Imputed interest	(74)
Total operating lease liabilities	$ 406	$ 356	$ 344

Leases (Contractual Maturitie_2

Leases (Contractual Maturities of Sales-Type and Direct Financing Lease Receivables) (Details) (Details) - USD ($) $ in Millions	Dec. 31, 2022		Dec. 31, 2021
Leases [Abstract]
2023	$ 101
2024	127
2025	137
2026	71
2027	36
Thereafter	148
Total lease payments receivable	620
Unguaranteed residual values	61
Less: Deferred interest income	(22)
Total lease receivables	$ 659	[1]	$ 464

[1]Excludes net investment in leveraged leases of $101 million.