ONEOK (OKE) 10-Q3 May 232023 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2023	Apr. 24, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-13643
Entity Registrant Name	ONEOK, Inc.
Entity Incorporation, State or Country Code	OK
Entity Tax Identification Number	73-1520922
Entity Address, Address Line One	100 West Fifth Street,
Entity Address, City or Town	Tulsa,
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	74103
City Area Code	918
Local Phone Number	588-7000
Title of 12(b) Security	Common stock, par value of $0.01
Trading Symbol	OKE
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		447,443,257
Entity Central Index Key	0001039684
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues
Revenues (Note K)	$ 4,521	$ 5,445
Cost of sales and fuel (exclusive of items shown separately below)	3,347	4,366
Operations and maintenance	239	214
Depreciation and amortization	162	154
General taxes	57	50
Other operating (income) expense, net (Note B)	(781)	(1)
Operating income	1,497	662
Equity in net earnings from investments (Note I)	40	36
Other income (expense), net	8	(13)
Interest expense (net of capitalized interest of $18 and $12, respectively)	(166)	(172)
Income before income taxes	1,379	513
Income taxes	(330)	(122)
Net income	1,049	391
Less: Preferred stock dividends	0	0
Net income available to common shareholders	$ 1,049	$ 391
Basic earnings per common share (Note H)	$ 2.34	$ 0.87
Diluted earnings per common share (Note H)	$ 2.34	$ 0.87
Average shares (millions)
Basic	448	447
Diluted	449	448
Commodity Sales
Revenues
Revenues (Note K)	$ 4,156	$ 5,105
Services
Revenues
Revenues (Note K)	$ 365	$ 340

CONSOLIDATED STATEMENTS OF IN_2

CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Consolidated Statements of Income (Parenthetical) [Abstract]
Capitalized interest	$ 18	$ 12

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net income	$ 1,049	$ 391
Other comprehensive income (loss), net of tax
Change in fair value of derivatives, net of tax of $(7) and $21, respectively	23	(72)
Derivative amounts reclassified to net income, net of tax of $3 and $(20), respectively	(12)	66
Change in retirement and other postretirement benefit plan obligations, net of tax of $— and $(1), respectively	0	3
Other comprehensive income (loss) of unconsolidated affiliates, net of tax of $1 and $(2), respectively	(2)	7
Total other comprehensive income, net of tax	9	4
Comprehensive income	$ 1,058	$ 395

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (PARANTHETICAL) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Change in fair value of derivatives, tax	$ (7)	$ 21
Derivative amounts reclassified to net income, tax	3	(20)
Change in retirement and other postretirement benefit plan obligations, tax	0	(1)
Other comprehensive income (loss) of unconsolidated affiliates, tax	$ 1	$ (2)

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 680	$ 220
Accounts receivable, net	1,153	1,532
Materials and supplies	157	149
NGLs and natural gas in storage	399	432
Commodity imbalances	22	43
Other current assets	158	172
Total current assets	2,569	2,548
Property, plant and equipment
Property, plant and equipment	25,252	25,015
Accumulated depreciation and amortization	5,212	5,063
Net property, plant and equipment	20,040	19,952
Investments and other assets
Investments in unconsolidated affiliates	789	802
Goodwill and net intangible assets	750	753
Other assets	316	324
Total investments and other assets	1,855	1,879
Total assets	24,464	24,379
Current liabilities
Current maturities of long-term debt (Note E)	500	925
Accounts payable	1,074	1,359
Commodity imbalances	220	254
Accrued taxes	150	136
Accrued interest	137	233
Operating lease liability, current	12	12
Other current liabilities	89	132
Total current liabilities	2,182	3,051
Long-term debt, excluding current maturities (Note E)	12,728	12,696
Deferred credits and other liabilities
Deferred income taxes	2,027	1,739
Operating lease liability, noncurrent	66	68
Other deferred credits	329	331
Total deferred credits and other liabilities	2,422	2,138
Commitments and contingencies (Note J)
Equity (Note F)
Preferred stock, $0.01 par value: authorized and issued 20,000 shares at March 31, 2023, and December 31, 2022	0	0
Common stock, $0.01 par value: authorized 1,200,000,000 shares; issued 474,916,234 shares and outstanding 447,441,008 shares at March 31, 2023; issued 474,916,234 shares and outstanding 447,157,771 shares at December 31, 2022	5	5
Paid-in capital	7,253	7,253
Accumulated other comprehensive loss (Note G)	(99)	(108)
Retained earnings	672	50
Treasury stock, at cost: 27,475,226 shares at March 31, 2023, and 27,758,463 shares at December 31, 2022	(699)	(706)
Total equity	7,132	6,494
Total liabilities and equity	$ 24,464	$ 24,379

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Equity (Note F)
Preferred stock, shares, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares, authorized (in shares)	20,000	20,000
Preferred stock, shares, issued (in shares)	20,000	20,000
Common stock, shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares, authorized (in shares)	1,200,000,000	1,200,000,000
Common stock, shares, issued (in shares)	474,916,234	474,916,234
Common stock, shares, outstanding (in shares)	447,441,008	447,157,771
Treasury stock, shares, (in shares)	27,475,226	27,758,463

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities
Net income	$ 1,049	$ 391
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	162	154
Equity in net earnings from investments	(40)	(36)
Distributions received from unconsolidated affiliates	43	36
Deferred income taxes	285	111
Gain on Business Interruption Insurance Recovery	(779)	0
Medford Settlement Proceeds	502	0
Other, net	18	25
Changes in assets and liabilities:
Accounts receivable	329	(244)
NGLs and natural gas in storage, net of commodity imbalances	20	(47)
Accounts payable	(237)	385
Accrued interest	(96)	(99)
Risk-management assets and liabilities	26	(119)
Other assets and liabilities, net	(61)	(94)
Cash provided by operating activities	1,221	463
Investing activities
Capital expenditures (less allowance for equity funds used during construction)	(289)	(257)
Distributions received from unconsolidated affiliates in excess of cumulative earnings	8	10
Medford Settlement Proceeds	328	0
Other, net	0	3
Cash provided by (used in) investing activities	47	(244)
Financing activities
Dividends paid	(427)	(417)
Short-term borrowings, net	0	78
Issuance of long-term debt, net of discounts	50	0
Repayment of long-term debt	(425)	0
Other, net	(6)	(11)
Cash used in financing activities	(808)	(350)
Change in cash and cash equivalents	460	(131)
Cash and cash equivalents at beginning of period	220	146
Cash and cash equivalents at end of period	$ 680	$ 15

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock
Shares, issued, beginning balance at Dec. 31, 2021		20,000	474,916,234
Total equity, beginning balance at Dec. 31, 2021	$ 6,015	$ 0	$ 5	$ 7,214	$ (472)	$ 0	$ (732)
Net income	391	0	0	0	0	391	0
Other comprehensive income	$ 4	0	0	0	4	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ 0	0	$ 0	0	0	0	0
Common Stock Issued During Period, Shares, Other			0
Common Stock Issued During Period, Value, Other	$ 6	0	$ 0	(6)		0	12
Common stock dividends paid (in dollars per share)	$ 0.935
Common Stock Dividends	$ (417)	0	0	(26)	0	(391)	0
Other, net	(5)	$ 0	$ 0	(5)		0	0
Shares, issued, ending balance at Mar. 31, 2022		20,000	474,916,234
Total equity, ending balance at Mar. 31, 2022	5,994	$ 0	$ 5	7,177	(468)	0	(720)
Shares, issued, beginning balance at Dec. 31, 2022		20,000	474,916,234
Total equity, beginning balance at Dec. 31, 2022	6,494	$ 0	$ 5	7,253	(108)	50	(706)
Net income	1,049	0	0	0	0	1,049	0
Other comprehensive income	$ 9	0	0	0	9	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ 0	0	$ 0	0	0	0	0
Common Stock Issued During Period, Shares, Other			0
Common Stock Issued During Period, Value, Other	$ 4	0	$ 0	(3)	0	0	7
Common stock dividends paid (in dollars per share)	$ 0.955
Common Stock Dividends	$ (427)	0	0	0	0	(427)	0
Other, net	3	$ 0	$ 0	3	0	0	0
Shares, issued, ending balance at Mar. 31, 2023		20,000	474,916,234
Total equity, ending balance at Mar. 31, 2023	$ 7,132	$ 0	$ 5	$ 7,253	$ (99)	$ 672	$ (699)

CONSOLIDATED STATEMENT OF CHA_2

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Parenthetical - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Preferred stock, dividends paid (in dollars per share)	$ 13.75	$ 13.75
Common stock dividends paid (in dollars per share)	$ 0.955	$ 0.935

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Notes)	3 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Notes)	Mar. 31, 2023
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIESOur accompanying unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the SEC. These statements have been prepared in accordance with GAAP and reflect all adjustments that, in our opinion, are necessary for a fair statement of the results for the interim periods presented. All such adjustments are of a normal recurring nature. The 2022 year-end Consolidated Balance Sheet data was derived from our audited Consolidated Financial Statements but does not include all disclosures required by GAAP. These unaudited Consolidated Financial Statements should be read in conjunction with our audited Consolidated Financial Statements in our Annual Report. Recently Issued Accounting Standards Update - Changes to GAAP are established by the Financial Accounting Standards Board (FASB) in the form of ASUs to the FASB Accounting Standards Codification. We consider the applicability and impact of all ASUs. ASUs not discussed herein or in our Annual Report were assessed and determined to be either not applicable or clarifications of ASUs previously issued. There have been no new accounting pronouncements that have become effective or have been issued that are of significance or potential significance to us.

MEDFORD INCIDENT (Notes)

MEDFORD INCIDENT (Notes)	3 Months Ended
MEDFORD INCIDENT (Notes)	Mar. 31, 2023
Unusual or Infrequent Items, or Both [Abstract]
Unusual or Infrequent Items, or Both, Disclosure	MEDFORD INCIDENT On July 9, 2022, a fire occurred at our 210 MBbl/d Medford, Oklahoma, natural gas liquids fractionation facility. Beginning in August 2022, we developed claims related to the Medford incident and recorded accruals for the expected insurance recoveries. We assessed incurred costs and lost earnings related to business interruption and property damage to our facility, as well as timing of recognition under applicable insurance recovery guidance, and recorded accruals of $151 million in 2022 for insurance recoveries that offset our incurred costs and losses. On January 9, 2023, we reached an agreement with our insurers to settle all claims for physical damage and business interruption related to the Medford incident. Under the terms of the settlement agreement, we agreed to resolve the claims for total insurance payments of $930 million, $100 million of which was received in 2022. The remaining $830 million was received in the first quarter 2023. The proceeds serve as settlement for property damage, business interruption claims to the date of the settlement and as payment in lieu of future business interruption insurance claims.

FAIR VALUE MEASUREMENTS (Notes)

FAIR VALUE MEASUREMENTS (Notes)	3 Months Ended
FAIR VALUE MEASUREMENTS (Notes)	Mar. 31, 2023
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS Determining Fair Value - For our fair value measurements, we utilize market prices, third-party pricing services, present value methods and standard option valuation models to determine the price we would receive from the sale of an asset or the transfer of a liability in an orderly transaction at the measurement date. We measure the fair value of a group of financial assets and liabilities consistent with how a market participant would price the net risk exposure at the measurement date. Determining the appropriate classification of our fair value measurements within the fair value hierarchy requires management’s judgment regarding the degree to which market data is observable or corroborated by observable market data. We categorize derivatives based on the lowest level input that is significant to the fair value measurement in its entirety. Our valuation techniques and inputs are consistent with those discussed in Note A of the Notes to Consolidated Financial Statements in our Annual Report. Recurring Fair Value Measurements - The following tables set forth our recurring fair value measurements as of the dates indicated: March 31, 2023 Level 1 Level 2 Level 3 Total - Gross Netting (a) Total - Net ( Millions of dollars ) Derivative assets Commodity contracts $ 46 $ 105 $ — $ 151 $ (106) $ 45 Interest-rate contracts — 1 — 1 — 1 Total derivative assets $ 46 $ 106 $ — $ 152 $ (106) $ 46 Derivative liabilities Commodity contracts $ (23) $ (66) $ — $ (89) $ 89 $ — Total derivative liabilities $ (23) $ (66) $ — $ (89) $ 89 $ — (a) - Derivative assets and liabilities are presented in our Consolidated Balance Sheet on a net basis. We net derivative assets and liabilities when a legally enforceable master-netting arrangement exists between the counterparty to a derivative contract and us. At March 31, 2023, we posted no cash and held cash of $17 million from various counterparties, which offsets our derivative net asset position under master netting arrangements as shown in the table above. December 31, 2022 Level 1 Level 2 Level 3 Total - Gross Netting (a) Total - Net (Millions of dollars) Derivative assets Commodity contracts $ 15 $ 152 $ — $ 167 $ (125) $ 42 Interest-rate contracts — 11 — 11 — 11 Total derivative assets $ 15 $ 163 $ — $ 178 $ (125) $ 53 Derivative liabilities Commodity contracts $ (38) $ (87) $ — $ (125) $ 125 $ — Total derivative liabilities $ (38) $ (87) $ — $ (125) $ 125 $ — (a) - Derivative assets and liabilities are presented in our Consolidated Balance Sheet on a net basis. We net derivative assets and liabilities when a legally enforceable master-netting arrangement exists between the counterparty to a derivative contract and us. At December 31, 2022, we held no cash and posted $9 million of cash with various counterparties, which is included in other current assets in our Consolidated Balance Sheet. The following table sets forth a reconciliation of our Level 3 fair value measurements for the periods indicated: Three Months Ended March 31, Derivative Assets (Liabilities) 2023 2022 ( Millions of dollars ) Net liabilities at beginning of period $ — $ (114) Total changes in fair value: Settlements included in net income (a) — 38 New Level 3 derivatives included in other comprehensive income (b) — (1) Unrealized change included in other comprehensive income (b) — (113) Net liabilities at end of period $ — $ (190) (a) - Included in commodity sales revenues/cost of sales and fuel in our Consolidated Statements of Income. (b) - Included in change in fair value of derivatives in our Consolidated Statements of Comprehensive Income. During the year ended December 31, 2022, we transferred out of Level 3 commodity derivatives associated with certain locations for both NGL and natural gas basis swaps, principally due to improved transparency of market prices as a result of the volume and frequency of transactions in these markets. We consider the valuation of these commodity derivatives, which are transacted through a clearing broker and valued with an unadjusted published price from an exchange, as a Level 2 valuation. Other Financial Instruments - The approximate fair value of cash and cash equivalents, accounts receivable, accounts payable and short-term borrowings is equal to book value due to the short-term nature of these items. Our cash and cash equivalents are composed of bank and money market accounts and are classified as Level 1. Our short-term borrowings are classified as Level 2 since the estimated fair value of the short-term borrowings can be determined using information available in the commercial paper market. We have investments associated with our supplemental executive retirement plan and nonqualified deferred compensation plan that are carried at fair value and primarily are composed of exchange-traded mutual funds classified as Level 1. The estimated fair value of our consolidated long-term debt, including current maturities, was $12.6 billion and $12.7 billion at March 31, 2023, and December 31, 2022, respectively. The book value of our consolidated long-term debt, including current maturities, was $13.2 billion and $13.6 billion at March 31, 2023, and December 31, 2022, respectively. The estimated fair value of the aggregate senior notes outstanding was determined using quoted market prices for similar issues with similar terms and maturities. The estimated fair value of our consolidated long-term debt is classified as Level 2.

RISK MANAGEMENT AND HEDGING ACT

RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES (Notes)	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES	RISK-MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES Risk-management Activities - We are sensitive to changes in natural gas, crude oil and NGL prices, principally as a result of contractual terms under which these commodities are processed, purchased and sold. We are also subject to the risk of interest-rate fluctuation in the normal course of business. We use physical-forward purchases and sales and financial derivatives to secure a certain price for a portion of our natural gas, condensate and purity NGLs; to reduce our exposure to commodity price and interest-rate fluctuations; and to achieve more predictable cash flows. We follow established policies and procedures to assess risk and approve, monitor and report our risk-management activities. We have not used these instruments for trading purposes. Commodity price risk - Commodity price risk refers to the risk of loss in cash flows and future earnings arising from adverse changes in the price of natural gas, NGLs and condensate. We may use commodity derivative instruments to reduce the near-term commodity price risk associated with a portion of our forecasted purchases and sales of commodities. Our exposure to commodity price risk is consistent with that discussed in our Annual Report. Interest-rate risk - We may manage interest-rate risk through the use of fixed-rate debt, floating-rate debt and interest-rate swaps. Interest-rate swaps are agreements to exchange interest payments at some future point based on specified notional amounts. At March 31, 2023, and December 31, 2022, we had forward-starting interest-rate swaps with notional amounts totaling $375 million to hedge the variability of interest payments on a portion of our forecasted debt issuances. All of our interest-rate swaps are designated as cash flow hedges. Fair Values of Derivative Instruments - The following table sets forth the fair values of our derivative instruments presented on a gross basis as of the dates indicated: March 31, 2023 December 31, 2022 Location in our Assets (Liabilities) Assets (Liabilities) Derivatives designated as hedging instruments ( Millions of dollars ) Commodity contracts (a) Other current assets $ 151 $ (89) $ 160 $ (123) Other assets — — 6 (1) Interest-rate contracts Other current assets 1 — 11 — Total derivatives designated as hedging instruments $ 152 $ (89) $ 177 $ (124) Derivatives not designated as hedging instruments Commodity contracts (a) Other current assets — — 1 (1) Total derivatives not designated as hedging instruments — — 1 (1) Total derivatives $ 152 $ (89) $ 178 $ (125) (a) - Derivative assets and liabilities are presented in our Consolidated Balance Sheets on a net basis when a legally enforceable master-netting arrangement exists between the counterparty to a derivative contract and us. Notional Quantities for Derivative Instruments - The following table sets forth the notional quantities for derivative instruments held as of the dates indicated: March 31, December 31 Contract Net Purchased/Payor Derivatives designated as hedging instruments: Cash flow hedges Fixed price - Natural gas ( Bcf ) Futures (20.5) (39.3) - Crude oil and NGLs ( MMBbl ) Futures (13.0) (8.4) Basis - Natural gas ( Bcf ) Futures (23.2) (39.3) Interest-rate contracts ( Billions of dollars ) Swaps $ 0.4 $ 0.4 Derivatives not designated as hedging instruments: Fixed price - Natural gas ( Bcf ) Futures — (0.1) - Crude oil and NGLs ( MMBbl ) Futures — 0.1 Basis - Natural gas ( Bcf ) Futures — (0.1) Cash Flow Hedges - The following table sets forth the unrealized change in fair value of cash flow hedges in other comprehensive income (loss) for the periods indicated: Three Months Ended March 31, 2023 2022 (Millions of dollars ) Commodity contracts $ 40 $ (174) Interest-rate contracts (10) 81 Total unrealized change in fair value of cash flow hedges in other comprehensive income (loss) $ 30 $ (93) The following table sets forth the effect of cash flow hedges on net income for the periods indicated: Derivatives in Cash Flow Location of Gain (Loss) Reclassified from Three Months Ended March 31, 2023 2022 (Millions of dollars ) Commodity contracts Commodity sales revenues $ 23 $ (211) Cost of sales and fuel (3) 134 Interest-rate contracts Interest expense (5) (9) Total change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives $ 15 $ (86) Credit Risk - We monitor the creditworthiness of our counterparties and compliance with policies and limits established by our Risk Oversight and Strategy Committee. We maintain credit policies with regard to our counterparties that we believe minimize credit risk. Our policies and related credit risk are consistent with those discussed in our Annual Report.

DEBT DEBT (Notes)

DEBT DEBT (Notes)	3 Months Ended
DEBT DEBT (Notes)	Mar. 31, 2023
Debt Disclosure [Abstract]
Debt [Text Block]	DEBT The following table sets forth our consolidated debt as of the dates indicated: March 31, December 31, ( Millions of dollars ) Commercial paper outstanding (a) $ — $ — Senior unsecured obligations: $425 at 5.0% due September 2023 — 425 $500 at 7.5% due September 2023 500 500 $500 at 2.75% due September 2024 500 500 $500 at 4.9% due March 2025 500 500 $400 at 2.2% due September 2025 387 387 $600 at 5.85% due January 2026 600 600 $500 at 4.0% due July 2027 500 500 $800 at 4.55% due July 2028 800 800 $100 at 6.875% due September 2028 100 100 $700 at 4.35% due March 2029 700 700 $750 at 3.4% due September 2029 714 714 $850 at 3.1% due March 2030 780 780 $600 at 6.35% due January 2031 600 600 $750 at 6.1% due November 2032 750 750 $400 at 6.00% due June 2035 400 400 $600 at 6.65% due October 2036 600 600 $600 at 6.85% due October 2037 600 600 $650 at 6.125% due February 2041 650 650 $400 at 6.2% due September 2043 400 400 $700 at 4.95% due July 2047 689 689 $1,000 at 5.2% due July 2048 1,000 1,000 $750 at 4.45% due September 2049 653 673 $500 at 4.5% due March 2050 443 443 $300 at 7.15% due January 2051 300 300 Guardian $120 term loan, rate of 6.03% as of March 31, 2023, due June 2025 120 120 Viking $60 term loan, rate of 6.16% as of March 31, 2023, due March 2026 50 — Total debt 13,336 13,731 Unamortized portion of terminated swaps 9 10 Unamortized debt issuance costs and discounts (117) (120) Current maturities of long-term debt (500) (925) Long-term debt $ 12,728 $ 12,696 (a) - Individual issuances of commercial paper under our commercial paper program generally mature in 90 days or less. $2.5 Billion Credit Agreement - Our $2.5 Billion Credit Agreement is a revolving credit facility and contains certain customary conditions for borrowing, as well as customary financial, affirmative and negative covenants. Among other things, these covenants include maintaining a ratio of consolidated net indebtedness to adjusted EBITDA (EBITDA, as defined in our $2.5 Billion Credit Agreement, adjusted for all noncash charges and increased for projected EBITDA from certain lender-approved capital expansion projects) of no more than 5.0 to 1. At March 31, 2023, we had no outstanding borrowings, our ratio of indebtedness to adjusted EBITDA was 2.8 to 1, and we were in compliance with all covenants under our $2.5 Billion Credit Agreement. Viking Term Loan Agreement - In March 2023, Viking entered into a $60 million senior unsecured Term Loan Agreement. The Viking Term Loan Agreement matures in March 2026 and bears interest at Term SOFR plus an applicable margin based on Viking’s credit rating at the time of determination plus an adjustment of 10 basis points. Under Viking’s current credit ratings, the applicable margin is 125 basis points. The Viking Term Loan Agreement allows prepayment of all or any portion outstanding without penalty or premium. During the first quarter 2023, Viking drew $50 million available under the agreement and the proceeds were used primarily to repay intercompany debt with ONEOK. The remainder was used for general corporate purposes. The remaining $10 million is available to be drawn until June 30, 2023. As of March 31, 2023, Viking is in compliance with all covenants under the Viking Term Loan Agreement. Debt Repayments - In February 2023, we redeemed our $425 million, 5.0% senior notes due September 2023 at 100% of the principal amount, plus accrued and unpaid interest, with cash on hand. Subsequent event - In April, we elected to redeem our $500 million, 7.5% senior notes due September 2023, with an effective redemption date in June 2023. The redemption price will be 100% of the principal amount of the notes, plus accrued and unpaid interest, which we expect to pay with cash on hand. Debt Guarantees - ONEOK, ONEOK Partners and the Intermediate Partnership have cross guarantees in place for ONEOK’s and ONEOK Partners’ indebtedness. The Guardian Term Loan Agreement and Viking Term Loan Agreement are not guaranteed by ONEOK, ONEOK Partners or the Intermediate Partnership.

EQUITY (Notes)

EQUITY (Notes)	3 Months Ended
EQUITY (Notes)	Mar. 31, 2023
Equity [Abstract]
EQUITY	EQUITY Dividends - Holders of our common stock share equally in any dividend declared by our Board of Directors, subject to the rights of the holders of outstanding Series E Preferred Stock. Dividends paid on our common stock in February 2023 were $0.955 per share. A common stock dividend of $0.955 per share was declared for shareholders of record at the close of business on May 1, 2023, payable May 15, 2023. Our Series E Preferred Stock pays quarterly dividends on each share of Series E Preferred Stock, when, as and if declared by our Board of Directors, at a rate of 5.5% per year. We paid dividends for the Series E Preferred Stock of $0.3 million in February 2023. Dividends totaling $0.3 million were declared for the Series E Preferred Stock and are payable May 15, 2023.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Notes)	3 Months Ended
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Notes)	Mar. 31, 2023
ACCUMULATED OTHER COMPREHENSIVE LOSS	ACCUMULATED OTHER COMPREHENSIVE LOSS The following table sets forth the balance in accumulated other comprehensive loss for the period indicated, net of tax: Risk- Retirement and Risk- Accumulated ( Millions of dollars ) January 1, 2023 $ (58) $ (55) $ 5 $ (108) Other comprehensive income (loss) before reclassifications 23 — (2) 21 Amounts reclassified to net income (b) (12) — — (12) Other comprehensive income (loss) 11 — (2) 9 March 31, 2023 $ (47) $ (55) $ 3 $ (99) (a) - Includes amounts related to supplemental executive retirement plan. (b) - See Note D for details of amounts reclassified to net income for risk-management assets/liabilities. The following table sets forth information about the balance of accumulated other comprehensive loss at March 31, 2023, representing unrealized gains (losses) related to risk-management assets and liabilities, net of tax: Risk- (Millions of dollars ) Commodity derivative instruments expected to be realized within the next 21 months (a) $ 48 Settled interest-rate swaps to be recognized over the life of the long-term, fixed-rate debt (b) (95) Interest-rate swaps with future settlement dates expected to be amortized over the life of long-term debt — Accumulated other comprehensive loss at March 31, 2023 $ (47) (a) - Based on commodity prices on March 31, 2023, we expect net gains of $48 million, net of tax, will be reclassified into earnings during the next 12 months. The remaining forecasted gains and losses have offsetting positions and are immaterial. (b) - We expect net losses of $18 million, net of tax, will be reclassified into earnings during the next 12 months. The remaining amounts in accumulated other comprehensive loss relate primarily to our retirement and other postretirement benefit plan obligations, which are expected to be amortized over the average remaining service period of employees participating in these plans.

EARNINGS PER SHARE EARNINGS PER

EARNINGS PER SHARE EARNINGS PER SHARE (Notes)	3 Months Ended
EARNINGS PER SHARE EARNINGS PER SHARE (Notes)	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	EARNINGS PER SHARE The following tables set forth the computation of basic and diluted EPS for the periods indicated: Three Months Ended March 31, 2023 Income Shares Per Share ( Millions, except per share amounts ) Basic EPS Net income available for common stock $ 1,049 448 $ 2.34 Diluted EPS Effect of dilutive securities — 1 Net income available for common stock and common stock equivalents $ 1,049 449 $ 2.34 Three Months Ended March 31, 2022 Income Shares Per Share ( Millions, except per share amounts ) Basic EPS Net income available for common stock $ 391 447 $ 0.87 Diluted EPS Effect of dilutive securities — 1 Net income available for common stock and common stock equivalents $ 391 448 $ 0.87

UNCONSOLIDATED AFFILIATES (Note

UNCONSOLIDATED AFFILIATES (Notes)	3 Months Ended
UNCONSOLIDATED AFFILIATES (Notes)	Mar. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
UNCONSOLIDATED AFFILIATES	UNCONSOLIDATED AFFILIATES Equity in Net Earnings from Investments - The following table sets forth our equity in net earnings from investments for the periods indicated: Three Months Ended March 31, 2023 2022 ( Millions of dollars ) Northern Border $ 24 $ 20 Overland Pass 9 5 Roadrunner 7 9 Other — 2 Equity in net earnings from investments $ 40 $ 36 We incurred expenses in transactions with unconsolidated affiliates of $28 million and $15 million for the three months ended March 31, 2023 and 2022, respectively, related primarily to Overland Pass and Northern Border. Revenue earned and accounts receivable from, and accounts payable to, our equity-method investees were not material. We have an operating agreement with Roadrunner that provides for reimbursement or payment to us for management services and certain operating costs. Reimbursements and payments from Roadrunner included in operating income in our Consolidated Statements of Income for all periods presented were not material.

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Notes)	3 Months Ended
COMMITMENTS AND CONTINGENCIES (Notes)	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Environmental Matters and Pipeline Safety - The operation of pipelines, plants and other facilities for the gathering, processing, fractionation, transportation and storage of natural gas, NGLs, condensate and other products is subject to numerous and complex laws and regulations pertaining to health, safety and the environment. As an owner and/or operator of these facilities, we must comply with laws and regulations that relate to air and water quality, hazardous and solid waste management and disposal, cultural resource protection and other environmental and safety matters. The cost of planning, designing, constructing and operating pipelines, plants and other facilities must incorporate compliance with these laws, regulations and safety standards. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and potentially criminal enforcement measures, including citizen suits, which can include the assessment of monetary penalties, the imposition of remedial requirements and the issuance of injunctions or restrictions on operation or construction. Management does not believe that, based on currently known information, a material risk of noncompliance with these laws and regulations exists that will affect adversely our consolidated results of operations, financial condition or cash flows. Legal Proceedings - We are a party to various legal proceedings that have arisen in the normal course of our operations. While the results of these proceedings cannot be predicted with certainty, we believe the reasonably possible losses from such proceedings, individually and in the aggregate, are not material. Additionally, we believe the probable final outcome of such proceedings will not have a material adverse effect on our consolidated results of operations, financial position or cash flows.

REVENUE REVENUE (Notes)

REVENUE REVENUE (Notes)	3 Months Ended
REVENUE REVENUE (Notes)	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUES Contract Assets and Contract Liabilities - Our contract asset balances at the beginning and end of the period primarily relate to our firm service transportation contracts with tiered rates, which are not material. Our contract liabilities at the beginning and end of the period primarily represent deferred revenue on storage contracts and deferred revenue on contributions in aid of construction received from customers, which are not material. Receivables from Customers and Revenue Disaggregation - Substantially all of the balances in accounts receivable on our Consolidated Balance Sheets at March 31, 2023, and December 31, 2022, relate to customer receivables. Revenue sources are disaggregated in Note L. Transaction Price Allocated to Unsatisfied Performance Obligations - We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) variable consideration on contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed. The following table presents aggregate value allocated to unsatisfied performance obligations as of March 31, 2023, and the amounts we expect to recognize in revenue in future periods, related primarily to firm transportation and storage contracts with remaining contract terms ranging from one month to 22 years: Expected Period of Recognition in Revenue ( Millions of dollars ) Remainder of 2023 $ 328 2024 376 2025 284 2026 271 2027 and beyond 874 Total estimated transaction price allocated to unsatisfied performance obligations $ 2,133 The table above excludes variable consideration allocated entirely to wholly unsatisfied performance obligations, wholly unsatisfied promises to transfer distinct goods or services that are part of a single performance obligation and consideration we determine to be fully constrained. The amounts we determined to be fully constrained relate to future sales obligations under long-term sales contracts where the transaction price is not known and minimum volume agreements, which we consider to be fully constrained until invoiced.

SEGMENTS (Notes)

SEGMENTS (Notes)	3 Months Ended
SEGMENTS (Notes)	Mar. 31, 2023
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
SEGMENTS	SEGMENTS Segment Descriptions - Our operations are divided into three reportable business segments as follows: • our Natural Gas Gathering and Processing segment gathers, treats and processes natural gas; • our Natural Gas Liquids segment gathers, treats, fractionates and transports NGLs and stores, markets and distributes purity NGLs; and • our Natural Gas Pipelines segment transports and stores natural gas. Other and eliminations consist of corporate costs, the operating and leasing activities of our headquarters building and related parking facility, the activity of our wholly owned captive insurance company and eliminations necessary to reconcile our reportable segments to our Consolidated Financial Statements. Operating Segment Information - The following tables set forth certain selected financial information for our operating segments for the periods indicated: Three Months Ended Natural Gas Natural Gas Natural Gas Total ( Millions of dollars ) NGL and condensate sales $ 644 $ 3,551 $ — $ 4,195 Residue natural gas sales 568 — 25 593 Gathering, processing and exchange services revenue 38 131 — 169 Transportation and storage revenue — 50 145 195 Other 8 3 1 12 Total revenues (c) 1,258 3,735 171 5,164 Cost of sales and fuel (exclusive of depreciation and operating costs) (875) (3,095) (14) (3,984) Operating costs (105) (152) (45) (302) Equity in net earnings from investments — 9 31 40 Noncash compensation expense 4 6 2 12 Other 1 778 — 779 Segment adjusted EBITDA $ 283 $ 1,281 $ 145 $ 1,709 Depreciation and amortization $ (67) $ (78) $ (17) $ (162) Investments in unconsolidated affiliates $ 26 $ 413 $ 349 $ 788 Total assets $ 6,899 $ 14,437 $ 2,239 $ 23,575 Capital expenditures $ 98 $ 137 $ 46 $ 281 (a) - Our Natural Gas Liquids segment has regulated and nonregulated operations. Our Natural Gas Liquids segment’s regulated operations had revenues of $638 million, of which $577 million related to revenues within the segment, cost of sales and fuel of $184 million and operating costs of $87 million. (b) - Our Natural Gas Pipelines segment has regulated and nonregulated operations. Our Natural Gas Pipelines segment’s regulated operations had revenues of $116 million, cost of sales and fuel of $15 million and operating costs of $38 million. (c) - Intersegment revenues are primarily commodity sales, which are based on the contracted selling price that is generally index-based and settled monthly, and for our Natural Gas Gathering and Processing segment totaled $631 million. Intersegment revenues for our Natural Gas Liquids and Natural Gas Pipelines segments were not material. Three Months Ended Total Other and Total ( Millions of dollars ) Reconciliations of total segments to consolidated NGL and condensate sales $ 4,195 $ (634) $ 3,561 Residue natural gas sales 593 — 593 Gathering, processing and exchange services revenue 169 — 169 Transportation and storage revenue 195 (2) 193 Other 12 (7) 5 Total revenues (a) $ 5,164 $ (643) $ 4,521 Cost of sales and fuel (exclusive of depreciation and operating costs) $ (3,984) $ 637 $ (3,347) Operating costs $ (302) $ 6 $ (296) Depreciation and amortization $ (162) $ — $ (162) Equity in net earnings from investments $ 40 $ — $ 40 Investments in unconsolidated affiliates $ 788 $ 1 $ 789 Total assets $ 23,575 $ 889 $ 24,464 Capital expenditures $ 281 $ 8 $ 289 (a) - Noncustomer revenue for the three months ended March 31, 2023, totaled $40 million related primarily to gains from derivatives on commodity contracts. Three Months Ended Natural Gas Natural Gas Natural Gas Total ( Millions of dollars ) NGL and condensate sales $ 1,004 $ 4,549 $ — $ 5,553 Residue natural gas sales 551 — 26 577 Gathering, processing and exchange services revenue 31 136 — 167 Transportation and storage revenue — 47 123 170 Other 6 2 — 8 Total revenues (c) 1,592 4,734 149 6,475 Cost of sales and fuel (exclusive of depreciation and operating costs) (1,289) (4,089) (17) (5,395) Operating costs (94) (129) (41) (264) Equity in net earnings from investments 2 5 29 36 Noncash compensation expense and other 4 7 4 15 Segment adjusted EBITDA $ 215 $ 528 $ 124 $ 867 Depreciation and amortization $ (63) $ (75) $ (15) $ (153) Investments in unconsolidated affiliates $ 27 $ 415 $ 355 $ 797 Total assets $ 6,914 $ 15,102 $ 2,154 $ 24,170 Capital expenditures $ 93 $ 126 $ 23 $ 242 (a) - Our Natural Gas Liquids segment has regulated and nonregulated operations. Our Natural Gas Liquids segment’s regulated operations had revenues of $604 million, of which $547 million related to revenues within the segment, cost of sales and fuel of $146 million and operating costs of $75 million. (b) - Our Natural Gas Pipelines segment has regulated and nonregulated operations. Our Natural Gas Pipelines segment’s regulated operations had revenues of $126 million, cost of sales and fuel of $21 million and operating costs of $35 million. (c) - Intersegment revenues are primarily commodity sales, which are based on the contracted selling price that is generally index-based and settled monthly, and for our Natural Gas Gathering and Processing segment totaled $1.0 billion. Intersegment revenues for our Natural Gas Liquids and Natural Gas Pipelines segments were not material. Three Months Ended Total Other and Total ( Millions of dollars ) Reconciliations of total segments to consolidated NGL and condensate sales $ 5,553 $ (1,028) $ 4,525 Residue natural gas sales 577 — 577 Gathering, processing and exchange services revenue 167 — 167 Transportation and storage revenue 170 (2) 168 Other 8 — 8 Total revenues (a) $ 6,475 $ (1,030) $ 5,445 Cost of sales and fuel (exclusive of depreciation and operating costs) $ (5,395) $ 1,029 $ (4,366) Operating costs $ (264) $ — $ (264) Depreciation and amortization $ (153) $ (1) $ (154) Equity in net earnings from investments $ 36 $ — $ 36 Investments in unconsolidated affiliates $ 797 $ — $ 797 Total assets $ 24,170 $ (177) $ 23,993 Capital expenditures $ 242 $ 15 $ 257 (a) - Noncustomer revenue for the three months ended March 31, 2022, totaled $(175) million related primarily to losses from derivatives on commodity contracts. Three Months Ended March 31, 2023 2022 ( Millions of dollars ) Reconciliation of net income to total segment adjusted EBITDA Net income $ 1,049 $ 391 Add: Interest expense, net of capitalized interest 166 172 Depreciation and amortization 162 154 Income taxes 330 122 Noncash compensation expense and other 10 25 Other corporate costs (8) 3 Total segment adjusted EBITDA (a) $ 1,709 $ 867 (a) - The three months ended March, 31 2023 includes $733 million related to the Medford incident, including a settlement gain of $779 million, offset partially by $46 million of third-party fractionation costs.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Our accompanying unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the SEC. These statements have been prepared in accordance with GAAP and reflect all adjustments that, in our opinion, are necessary for a fair statement of the results for the interim periods presented. All such adjustments are of a normal recurring nature. The 2022 year-end Consolidated Balance Sheet data was derived from our audited Consolidated Financial Statements but does not include all disclosures required by GAAP. These unaudited Consolidated Financial Statements should be read in conjunction with our audited Consolidated Financial Statements in our Annual Report.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Standards Update - Changes to GAAP are established by the Financial Accounting Standards Board (FASB) in the form of ASUs to the FASB Accounting Standards Codification. We consider the applicability and impact of all ASUs. ASUs not discussed herein or in our Annual Report were assessed and determined to be either not applicable or clarifications of ASUs previously issued. There have been no new accounting pronouncements that have become effective or have been issued that are of significance or potential significance to us.

FAIR VALUE MEASUREMENTS FAIR VA

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Policies)	3 Months Ended
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Policies)	Mar. 31, 2023
Fair Value Accounting Policy [Abstract]
Fair Value of Financial Instruments, Policy [Policy Text Block]	Determining Fair Value - For our fair value measurements, we utilize market prices, third-party pricing services, present value methods and standard option valuation models to determine the price we would receive from the sale of an asset or the transfer of a liability in an orderly transaction at the measurement date. We measure the fair value of a group of financial assets and liabilities consistent with how a market participant would price the net risk exposure at the measurement date. Determining the appropriate classification of our fair value measurements within the fair value hierarchy requires management’s judgment regarding the degree to which market data is observable or corroborated by observable market data. We categorize derivatives based on the lowest level input that is significant to the fair value measurement in its entirety. Our valuation techniques and inputs are consistent with those discussed in Note A of the Notes to Consolidated Financial Statements in our Annual Report.

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
FAIR VALUE MEASUREMENTS (Tables)	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Recurring Fair Value Measurements	The following tables set forth our recurring fair value measurements as of the dates indicated: March 31, 2023 Level 1 Level 2 Level 3 Total - Gross Netting (a) Total - Net ( Millions of dollars ) Derivative assets Commodity contracts $ 46 $ 105 $ — $ 151 $ (106) $ 45 Interest-rate contracts — 1 — 1 — 1 Total derivative assets $ 46 $ 106 $ — $ 152 $ (106) $ 46 Derivative liabilities Commodity contracts $ (23) $ (66) $ — $ (89) $ 89 $ — Total derivative liabilities $ (23) $ (66) $ — $ (89) $ 89 $ — (a) - Derivative assets and liabilities are presented in our Consolidated Balance Sheet on a net basis. We net derivative assets and liabilities when a legally enforceable master-netting arrangement exists between the counterparty to a derivative contract and us. At March 31, 2023, we posted no cash and held cash of $17 million from various counterparties, which offsets our derivative net asset position under master netting arrangements as shown in the table above. December 31, 2022 Level 1 Level 2 Level 3 Total - Gross Netting (a) Total - Net (Millions of dollars) Derivative assets Commodity contracts $ 15 $ 152 $ — $ 167 $ (125) $ 42 Interest-rate contracts — 11 — 11 — 11 Total derivative assets $ 15 $ 163 $ — $ 178 $ (125) $ 53 Derivative liabilities Commodity contracts $ (38) $ (87) $ — $ (125) $ 125 $ — Total derivative liabilities $ (38) $ (87) $ — $ (125) $ 125 $ — (a) - Derivative assets and liabilities are presented in our Consolidated Balance Sheet on a net basis. We net derivative assets and liabilities when a legally enforceable master-netting arrangement exists between the counterparty to a derivative contract and us. At December 31, 2022, we held no cash and posted $9 million of cash with various counterparties, which is included in other current assets in our Consolidated Balance Sheet.
Reconciliation of Level 3 Fair Value Measurements	The following table sets forth a reconciliation of our Level 3 fair value measurements for the periods indicated: Three Months Ended March 31, Derivative Assets (Liabilities) 2023 2022 ( Millions of dollars ) Net liabilities at beginning of period $ — $ (114) Total changes in fair value: Settlements included in net income (a) — 38 New Level 3 derivatives included in other comprehensive income (b) — (1) Unrealized change included in other comprehensive income (b) — (113) Net liabilities at end of period $ — $ (190) (a) - Included in commodity sales revenues/cost of sales and fuel in our Consolidated Statements of Income.

RISK MANAGEMENT AND HEDGING A_2

RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES (Tables)	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivatives	The following table sets forth the fair values of our derivative instruments presented on a gross basis as of the dates indicated: March 31, 2023 December 31, 2022 Location in our Assets (Liabilities) Assets (Liabilities) Derivatives designated as hedging instruments ( Millions of dollars ) Commodity contracts (a) Other current assets $ 151 $ (89) $ 160 $ (123) Other assets — — 6 (1) Interest-rate contracts Other current assets 1 — 11 — Total derivatives designated as hedging instruments $ 152 $ (89) $ 177 $ (124) Derivatives not designated as hedging instruments Commodity contracts (a) Other current assets — — 1 (1) Total derivatives not designated as hedging instruments — — 1 (1) Total derivatives $ 152 $ (89) $ 178 $ (125)
Notional Amounts of Derivative Instruments	The following table sets forth the notional quantities for derivative instruments held as of the dates indicated: March 31, December 31 Contract Net Purchased/Payor Derivatives designated as hedging instruments: Cash flow hedges Fixed price - Natural gas ( Bcf ) Futures (20.5) (39.3) - Crude oil and NGLs ( MMBbl ) Futures (13.0) (8.4) Basis - Natural gas ( Bcf ) Futures (23.2) (39.3) Interest-rate contracts ( Billions of dollars ) Swaps $ 0.4 $ 0.4 Derivatives not designated as hedging instruments: Fixed price - Natural gas ( Bcf ) Futures — (0.1) - Crude oil and NGLs ( MMBbl ) Futures — 0.1 Basis - Natural gas ( Bcf ) Futures — (0.1)
Schedule of Cash Flow Hedging Instruments Effect on Comprehensive Income (Loss)	The following table sets forth the unrealized change in fair value of cash flow hedges in other comprehensive income (loss) for the periods indicated: Three Months Ended March 31, 2023 2022 (Millions of dollars ) Commodity contracts $ 40 $ (174) Interest-rate contracts (10) 81 Total unrealized change in fair value of cash flow hedges in other comprehensive income (loss) $ 30 $ (93)
Schedule of Cash Flow Hedging Instruments Effect on Income (Loss)	The following table sets forth the effect of cash flow hedges on net income for the periods indicated: Derivatives in Cash Flow Location of Gain (Loss) Reclassified from Three Months Ended March 31, 2023 2022 (Millions of dollars ) Commodity contracts Commodity sales revenues $ 23 $ (211) Cost of sales and fuel (3) 134 Interest-rate contracts Interest expense (5) (9) Total change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives $ 15 $ (86)

DEBT DEBT (Tables)

DEBT DEBT (Tables)	3 Months Ended
DEBT DEBT (Tables)	Mar. 31, 2023
Debt Instrument [Line Items]
Debt [Table Text Block]	The following table sets forth our consolidated debt as of the dates indicated: March 31, December 31, ( Millions of dollars ) Commercial paper outstanding (a) $ — $ — Senior unsecured obligations: $425 at 5.0% due September 2023 — 425 $500 at 7.5% due September 2023 500 500 $500 at 2.75% due September 2024 500 500 $500 at 4.9% due March 2025 500 500 $400 at 2.2% due September 2025 387 387 $600 at 5.85% due January 2026 600 600 $500 at 4.0% due July 2027 500 500 $800 at 4.55% due July 2028 800 800 $100 at 6.875% due September 2028 100 100 $700 at 4.35% due March 2029 700 700 $750 at 3.4% due September 2029 714 714 $850 at 3.1% due March 2030 780 780 $600 at 6.35% due January 2031 600 600 $750 at 6.1% due November 2032 750 750 $400 at 6.00% due June 2035 400 400 $600 at 6.65% due October 2036 600 600 $600 at 6.85% due October 2037 600 600 $650 at 6.125% due February 2041 650 650 $400 at 6.2% due September 2043 400 400 $700 at 4.95% due July 2047 689 689 $1,000 at 5.2% due July 2048 1,000 1,000 $750 at 4.45% due September 2049 653 673 $500 at 4.5% due March 2050 443 443 $300 at 7.15% due January 2051 300 300 Guardian $120 term loan, rate of 6.03% as of March 31, 2023, due June 2025 120 120 Viking $60 term loan, rate of 6.16% as of March 31, 2023, due March 2026 50 — Total debt 13,336 13,731 Unamortized portion of terminated swaps 9 10 Unamortized debt issuance costs and discounts (117) (120) Current maturities of long-term debt (500) (925) Long-term debt $ 12,728 $ 12,696 (a) - Individual issuances of commercial paper under our commercial paper program generally mature in 90 days or less.

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	3 Months Ended
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	Mar. 31, 2023
Accumulated Other Comprehensive Loss	The following table sets forth the balance in accumulated other comprehensive loss for the period indicated, net of tax: Risk- Retirement and Risk- Accumulated ( Millions of dollars ) January 1, 2023 $ (58) $ (55) $ 5 $ (108) Other comprehensive income (loss) before reclassifications 23 — (2) 21 Amounts reclassified to net income (b) (12) — — (12) Other comprehensive income (loss) 11 — (2) 9 March 31, 2023 $ (47) $ (55) $ 3 $ (99) (a) - Includes amounts related to supplemental executive retirement plan. (b) - See Note D for details of amounts reclassified to net income for risk-management assets/liabilities.
Schedule of Accumulated Other Comprehensive Loss for Risk-Management Assets/Liabilities [Table Text Block]	The following table sets forth information about the balance of accumulated other comprehensive loss at March 31, 2023, representing unrealized gains (losses) related to risk-management assets and liabilities, net of tax: Risk- (Millions of dollars ) Commodity derivative instruments expected to be realized within the next 21 months (a) $ 48 Settled interest-rate swaps to be recognized over the life of the long-term, fixed-rate debt (b) (95) Interest-rate swaps with future settlement dates expected to be amortized over the life of long-term debt — Accumulated other comprehensive loss at March 31, 2023 $ (47) (a) - Based on commodity prices on March 31, 2023, we expect net gains of $48 million, net of tax, will be reclassified into earnings during the next 12 months. The remaining forecasted gains and losses have offsetting positions and are immaterial. (b) - We expect net losses of $18 million, net of tax, will be reclassified into earnings during the next 12 months.

EARNINGS PER SHARE EARNINGS P_2

EARNINGS PER SHARE EARNINGS PER SHARE (Tables)	3 Months Ended
EARNINGS PER SHARE EARNINGS PER SHARE (Tables)	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share	The following tables set forth the computation of basic and diluted EPS for the periods indicated: Three Months Ended March 31, 2023 Income Shares Per Share ( Millions, except per share amounts ) Basic EPS Net income available for common stock $ 1,049 448 $ 2.34 Diluted EPS Effect of dilutive securities — 1 Net income available for common stock and common stock equivalents $ 1,049 449 $ 2.34 Three Months Ended March 31, 2022 Income Shares Per Share ( Millions, except per share amounts ) Basic EPS Net income available for common stock $ 391 447 $ 0.87 Diluted EPS Effect of dilutive securities — 1 Net income available for common stock and common stock equivalents $ 391 448 $ 0.87

UNCONSOLIDATED AFFILIATES (Tabl

UNCONSOLIDATED AFFILIATES (Tables)	3 Months Ended
UNCONSOLIDATED AFFILIATES (Tables)	Mar. 31, 2023
Equity In Net Earnings From Investments
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments [Table Text Block]	The following table sets forth our equity in net earnings from investments for the periods indicated: Three Months Ended March 31, 2023 2022 ( Millions of dollars ) Northern Border $ 24 $ 20 Overland Pass 9 5 Roadrunner 7 9 Other — 2 Equity in net earnings from investments $ 40 $ 36

REVENUES (Tables)

REVENUES (Tables)	3 Months Ended
REVENUES (Tables)	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	The following table presents aggregate value allocated to unsatisfied performance obligations as of March 31, 2023, and the amounts we expect to recognize in revenue in future periods, related primarily to firm transportation and storage contracts with remaining contract terms ranging from one month to 22 years: Expected Period of Recognition in Revenue ( Millions of dollars ) Remainder of 2023 $ 328 2024 376 2025 284 2026 271 2027 and beyond 874 Total estimated transaction price allocated to unsatisfied performance obligations $ 2,133

SEGMENTS (Tables)

SEGMENTS (Tables)	3 Months Ended
SEGMENTS (Tables)	Mar. 31, 2023
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Segments	The following tables set forth certain selected financial information for our operating segments for the periods indicated: Three Months Ended Natural Gas Natural Gas Natural Gas Total ( Millions of dollars ) NGL and condensate sales $ 644 $ 3,551 $ — $ 4,195 Residue natural gas sales 568 — 25 593 Gathering, processing and exchange services revenue 38 131 — 169 Transportation and storage revenue — 50 145 195 Other 8 3 1 12 Total revenues (c) 1,258 3,735 171 5,164 Cost of sales and fuel (exclusive of depreciation and operating costs) (875) (3,095) (14) (3,984) Operating costs (105) (152) (45) (302) Equity in net earnings from investments — 9 31 40 Noncash compensation expense 4 6 2 12 Other 1 778 — 779 Segment adjusted EBITDA $ 283 $ 1,281 $ 145 $ 1,709 Depreciation and amortization $ (67) $ (78) $ (17) $ (162) Investments in unconsolidated affiliates $ 26 $ 413 $ 349 $ 788 Total assets $ 6,899 $ 14,437 $ 2,239 $ 23,575 Capital expenditures $ 98 $ 137 $ 46 $ 281 (a) - Our Natural Gas Liquids segment has regulated and nonregulated operations. Our Natural Gas Liquids segment’s regulated operations had revenues of $638 million, of which $577 million related to revenues within the segment, cost of sales and fuel of $184 million and operating costs of $87 million. (b) - Our Natural Gas Pipelines segment has regulated and nonregulated operations. Our Natural Gas Pipelines segment’s regulated operations had revenues of $116 million, cost of sales and fuel of $15 million and operating costs of $38 million. (c) - Intersegment revenues are primarily commodity sales, which are based on the contracted selling price that is generally index-based and settled monthly, and for our Natural Gas Gathering and Processing segment totaled $631 million. Intersegment revenues for our Natural Gas Liquids and Natural Gas Pipelines segments were not material. Three Months Ended Total Other and Total ( Millions of dollars ) Reconciliations of total segments to consolidated NGL and condensate sales $ 4,195 $ (634) $ 3,561 Residue natural gas sales 593 — 593 Gathering, processing and exchange services revenue 169 — 169 Transportation and storage revenue 195 (2) 193 Other 12 (7) 5 Total revenues (a) $ 5,164 $ (643) $ 4,521 Cost of sales and fuel (exclusive of depreciation and operating costs) $ (3,984) $ 637 $ (3,347) Operating costs $ (302) $ 6 $ (296) Depreciation and amortization $ (162) $ — $ (162) Equity in net earnings from investments $ 40 $ — $ 40 Investments in unconsolidated affiliates $ 788 $ 1 $ 789 Total assets $ 23,575 $ 889 $ 24,464 Capital expenditures $ 281 $ 8 $ 289 (a) - Noncustomer revenue for the three months ended March 31, 2023, totaled $40 million related primarily to gains from derivatives on commodity contracts. Three Months Ended Natural Gas Natural Gas Natural Gas Total ( Millions of dollars ) NGL and condensate sales $ 1,004 $ 4,549 $ — $ 5,553 Residue natural gas sales 551 — 26 577 Gathering, processing and exchange services revenue 31 136 — 167 Transportation and storage revenue — 47 123 170 Other 6 2 — 8 Total revenues (c) 1,592 4,734 149 6,475 Cost of sales and fuel (exclusive of depreciation and operating costs) (1,289) (4,089) (17) (5,395) Operating costs (94) (129) (41) (264) Equity in net earnings from investments 2 5 29 36 Noncash compensation expense and other 4 7 4 15 Segment adjusted EBITDA $ 215 $ 528 $ 124 $ 867 Depreciation and amortization $ (63) $ (75) $ (15) $ (153) Investments in unconsolidated affiliates $ 27 $ 415 $ 355 $ 797 Total assets $ 6,914 $ 15,102 $ 2,154 $ 24,170 Capital expenditures $ 93 $ 126 $ 23 $ 242 (a) - Our Natural Gas Liquids segment has regulated and nonregulated operations. Our Natural Gas Liquids segment’s regulated operations had revenues of $604 million, of which $547 million related to revenues within the segment, cost of sales and fuel of $146 million and operating costs of $75 million. (b) - Our Natural Gas Pipelines segment has regulated and nonregulated operations. Our Natural Gas Pipelines segment’s regulated operations had revenues of $126 million, cost of sales and fuel of $21 million and operating costs of $35 million. (c) - Intersegment revenues are primarily commodity sales, which are based on the contracted selling price that is generally index-based and settled monthly, and for our Natural Gas Gathering and Processing segment totaled $1.0 billion. Intersegment revenues for our Natural Gas Liquids and Natural Gas Pipelines segments were not material. Three Months Ended Total Other and Total ( Millions of dollars ) Reconciliations of total segments to consolidated NGL and condensate sales $ 5,553 $ (1,028) $ 4,525 Residue natural gas sales 577 — 577 Gathering, processing and exchange services revenue 167 — 167 Transportation and storage revenue 170 (2) 168 Other 8 — 8 Total revenues (a) $ 6,475 $ (1,030) $ 5,445 Cost of sales and fuel (exclusive of depreciation and operating costs) $ (5,395) $ 1,029 $ (4,366) Operating costs $ (264) $ — $ (264) Depreciation and amortization $ (153) $ (1) $ (154) Equity in net earnings from investments $ 36 $ — $ 36 Investments in unconsolidated affiliates $ 797 $ — $ 797 Total assets $ 24,170 $ (177) $ 23,993 Capital expenditures $ 242 $ 15 $ 257 (a) - Noncustomer revenue for the three months ended March 31, 2022, totaled $(175) million related primarily to losses from derivatives on commodity contracts. Three Months Ended March 31, 2023 2022 ( Millions of dollars ) Reconciliation of net income to total segment adjusted EBITDA Net income $ 1,049 $ 391 Add: Interest expense, net of capitalized interest 166 172 Depreciation and amortization 162 154 Income taxes 330 122 Noncash compensation expense and other 10 25 Other corporate costs (8) 3 Total segment adjusted EBITDA (a) $ 1,709 $ 867 (a) - The three months ended March, 31 2023 includes $733 million related to the Medford incident, including a settlement gain of $779 million, offset partially by $46 million of third-party fractionation costs.

MEDFORD INCIDENT (Details)

MEDFORD INCIDENT (Details) - USD ($) $ in Millions	3 Months Ended
MEDFORD INCIDENT (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Business Interruption Loss [Line Items]
Gain on Business Interruption Insurance Recovery	$ 779		$ 0
Medford Incident \| Total Receivables 2022
Business Interruption Loss [Line Items]
Loss Contingency, Insurance Receivable		$ 151
Medford Incident \| Insurance Recoveries
Business Interruption Loss [Line Items]
Insurance Proceeds	930
Medford Incident \| Insurance Recoveries in 2022
Business Interruption Loss [Line Items]
Unusual or Infrequent Item, or Both, Insurance Proceeds		100
Medford Incident \| Business Interruption - Settlement Proceeds Received in 2023
Business Interruption Loss [Line Items]
Insurance Proceeds 2023	830
Medford Incident \| Business Interruption - Settlement Proceeds
Business Interruption Loss [Line Items]
Outstanding insurance receivable		$ 51
Gain on Business Interruption Insurance Recovery	$ 779

FAIR VALUE MEASUREMENTS - Part

FAIR VALUE MEASUREMENTS - Part 1 (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cash held - offsetting derivative net asset positions under master-netting arrangements	$ (17)	$ 0
Cash posted - total	0	9
Long-term debt, fair value	12,600	12,700
Long-term debt	13,200	13,600
Fair Value, Recurring [Member] \| Gross Fair Value Measurement [Member]
Derivative assets
Derivative asset, fair value, gross	152	178
Derivative liabilities
Derivative liability, fair value, gross	(89)	(125)
Fair Value, Recurring [Member] \| Gross Fair Value Measurement [Member] \| Financial Contracts
Derivative assets
Derivative asset, fair value, gross	151	167
Derivative liabilities
Derivative liability, fair value, gross	(89)	(125)
Fair Value, Recurring [Member] \| Gross Fair Value Measurement [Member] \| Interest Rate Contracts
Derivative assets
Interest-rate contracts	1	11
Fair Value, Recurring [Member]
Derivative assets
Derivative assets	46	53
Derivative assets netting	(106)	(125)
Derivative liabilities
Derivative liabilities	0	0
Derivative liabilities netting	89	125
Fair Value, Recurring [Member] \| Financial Contracts
Derivative assets
Derivative assets	45	42
Derivative assets netting	(106)	(125)
Derivative liabilities
Derivative liabilities	0	0
Derivative liabilities netting	89	125
Fair Value, Recurring [Member] \| Interest Rate Contracts
Derivative assets
Interest-rate contracts	1	11
Derivative assets netting	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative assets
Derivative asset, fair value, gross	46	15
Derivative liabilities
Derivative liability, fair value, gross	(23)	(38)
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Financial Contracts
Derivative assets
Derivative asset, fair value, gross	46	15
Derivative liabilities
Derivative liability, fair value, gross	(23)	(38)
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Interest Rate Contracts
Derivative assets
Interest-rate contracts	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative assets
Derivative asset, fair value, gross	106	163
Derivative liabilities
Derivative liability, fair value, gross	(66)	(87)
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Financial Contracts
Derivative assets
Derivative asset, fair value, gross	105	152
Derivative liabilities
Derivative liability, fair value, gross	(66)	(87)
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Contracts
Derivative assets
Interest-rate contracts	1	11
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivative assets
Derivative asset, fair value, gross	0	0
Derivative liabilities
Derivative liability, fair value, gross	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Financial Contracts
Derivative assets
Derivative asset, fair value, gross	0	0
Derivative liabilities
Derivative liability, fair value, gross	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Interest Rate Contracts
Derivative assets
Interest-rate contracts	$ 0	$ 0

FAIR VALUE MEASUREMENTS - Par_2

FAIR VALUE MEASUREMENTS - Part 2 (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Net liabilities at beginning of period	$ 0	$ (114)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements	0	38
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, New Level 3 Derivatives	0	(1)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Unrealized Change Included in other comprehensive income	0	(113)
Net liabilities at end of period	$ 0	$ (190)

RISK MANAGEMENT AND HEDGING A_3

RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES Part 1 (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivative, Fair Value [Line Items]
Assets	$ 152	$ 178
(Liabilities)	(89)	(125)
Derivatives designated as hedging instruments
Derivative, Fair Value [Line Items]
Assets	152	177
(Liabilities)	(89)	(124)
Derivatives not designated as hedging instruments
Derivative, Fair Value [Line Items]
Assets	0	1
(Liabilities)	0	(1)
Interest Rate Contracts \| Derivatives designated as hedging instruments \| Purchased/ Payor
Derivative, Fair Value [Line Items]
Derivative, Notional Amount	400	400
Other Current Assets [Member] \| Commodity Contracts \| Financial contracts \| Derivatives designated as hedging instruments
Derivative, Fair Value [Line Items]
Assets	151	160
(Liabilities)	(89)	(123)
Other Current Assets [Member] \| Commodity Contracts \| Financial contracts \| Derivatives not designated as hedging instruments
Derivative, Fair Value [Line Items]
Assets	0	1
(Liabilities)	0	(1)
Other Current Assets [Member] \| Interest Rate Contracts \| Derivatives designated as hedging instruments
Derivative, Fair Value [Line Items]
Assets	1	11
(Liabilities)	0	0
Other Assets \| Commodity Contracts \| Financial contracts \| Derivatives designated as hedging instruments
Derivative, Fair Value [Line Items]
Assets	0	6
(Liabilities)	0	(1)
Interest Rate Contracts \| Cash Flow Hedging [Member] \| Forward contracts \| Forecasted Debt Issuances [Member]
Derivative, Fair Value [Line Items]
Derivative, Notional Amount	$ 375	$ 375

RISK MANAGEMENT AND HEDGING A_4

RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES, Part 2 (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($) MMBbls Bcf	Dec. 31, 2022 USD ($) Bcf MMBbls
Derivatives designated as Hedging Instrument \| Interest Rate Contracts \| Purchased/ Payor
Derivative [Line Items]
Derivative, Notional Amount \| $	$ 400	$ 400
Derivatives designated as Hedging Instrument \| Future \| Natural gas (Bcf) \| Fixed price \| Sold/ Receiver
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	20.5	39.3
Derivatives designated as Hedging Instrument \| Future \| Natural gas (Bcf) \| Basis \| Sold/ Receiver
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	23.2	39.3
Derivatives designated as Hedging Instrument \| Future \| Crude oil and NGLs (MMBbl) \| Fixed price \| Sold/ Receiver
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Volume \| MMBbls	13	8.4
Derivatives not designated as hedging instruments \| Future \| Natural gas (Bcf) \| Fixed price \| Sold/ Receiver
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	0	0.1
Derivatives not designated as hedging instruments \| Future \| Natural gas (Bcf) \| Basis \| Sold/ Receiver
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Volume	0	0.1
Derivatives not designated as hedging instruments \| Future \| Crude oil and NGLs (MMBbl) \| Fixed price \| Purchased/ Payor
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Volume \| MMBbls	0	0.1
Forecasted Debt Issuances [Member] \| Cash Flow Hedging [Member] \| Forward contracts \| Interest Rate Contracts
Derivative [Line Items]
Derivative, Notional Amount \| $	$ 375	$ 375

RISK MANAGEMENT AND HEDGING A_5

RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES Part 3 (Details) - Cash Flow Hedging [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized change in fair value of cash flow hedges in other comprehensive income (loss)	$ 30	$ (93)
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives	15	(86)
Commodity Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized change in fair value of cash flow hedges in other comprehensive income (loss)	40	(174)
Commodity Contracts \| Commodity sales revenues
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives	23	(211)
Commodity Contracts \| Cost of sales and fuel
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives	(3)	134
Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized change in fair value of cash flow hedges in other comprehensive income (loss)	(10)	81
Interest Rate Contracts \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives	$ (5)	$ (9)

DEBT DEBT (Details)

DEBT DEBT (Details) $ in Millions	3 Months Ended
DEBT DEBT (Details) $ in Millions	Jun. 30, 2023 USD ($) Rate	Mar. 31, 2023 USD ($) Rate	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Total debt		$ 13,336	$ 13,731
Unamortized portion of terminated swaps		9	10
Unamortized debt issuance costs and discounts		(117)	(120)
Current maturities of long-term debt		(500)	(925)
Long-term debt		12,728	12,696
$2.5 Billion Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 2,500
Debt Instrument, Covenant Description		Among other things, these covenants include maintaining a ratio of consolidated net indebtedness to adjusted EBITDA (EBITDA, as defined in our $2.5 Billion Credit Agreement, adjusted for all noncash charges and increased for projected EBITDA from certain lender-approved capital expansion projects) of no more than 5.0 to 1.
Indebtedness To Adjusted EBITDA Maximum		5
Line of Credit Facility, Amount Outstanding		$ 0
Indebtedness To Adjusted EBITDA Current		2.8
Viking Term Loan Agreement
Debt Instrument [Line Items]
Debt Instrument, Covenant Description		In March 2023, Viking entered into a $60 million senior unsecured Term Loan Agreement. The Viking Term Loan Agreement matures in March 2026 and bears interest at Term SOFR plus an applicable margin based on Viking’s credit rating at the time of determination plus an adjustment of 10 basis points. Under Viking’s current credit ratings, the applicable margin is 125 basis points. The Viking Term Loan Agreement allows prepayment of all or any portion outstanding without penalty or premium. During the first quarter 2023, Viking drew $50 million available under the agreement and the proceeds were used primarily to repay intercompany debt with ONEOK. The remainder was used for general corporate purposes. The remaining $10 million is available to be drawn until June 30, 2023. As of March 31, 2023, Viking is in compliance with all covenants under the Viking Term Loan Agreement.
Viking Pipeline
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate Description		bears interest at Term SOFR plus an applicable margin based on Viking’s credit rating at the time of determination plus an adjustment of 10 basis points. Under Viking’s current credit ratings, the applicable margin is 125 basis points.
Notes Payable due 2025 \| Variable Rate \| Guardian Pipeline
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 120
Total debt		$ 120	120
Debt Instrument, Interest Rate During Period \| Rate		6.03%
Notes Payable due 2026 \| Variable Rate \| Viking Pipeline
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 60
Total debt		$ 50	0
Debt Instrument, Interest Rate During Period \| Rate		6.16%
Subsidiary Issuer [Member] \| 5.0% Notes Payable due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 425
Interest Rate (in hundredths) \| Rate		5%
Total debt		$ 0	425
Repayments of Debt		$ 425
Debt Instrument, Redemption Price, Percentage		100%
Subsidiary Issuer [Member] \| 4.9% Notes Payable due 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500
Interest Rate (in hundredths) \| Rate		4.90%
Total debt		$ 500	500
Subsidiary Issuer [Member] \| 6.65% Notes Payable due 2036 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 600
Interest Rate (in hundredths) \| Rate		6.65%
Total debt		$ 600	600
Subsidiary Issuer [Member] \| 6.85% Notes Payable due 2037 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 600
Interest Rate (in hundredths) \| Rate		6.85%
Total debt		$ 600	600
Subsidiary Issuer [Member] \| 6.125% Notes Payable due 2041 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 650
Interest Rate (in hundredths) \| Rate		6.125%
Total debt		$ 650	650
Subsidiary Issuer [Member] \| 6.2% Notes Payable due 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 400
Interest Rate (in hundredths) \| Rate		6.20%
Total debt		$ 400	400
Parent Company
Debt Instrument [Line Items]
Commercial Paper		0	0
Parent Company \| 7.5% Notes Payable due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500
Interest Rate (in hundredths) \| Rate		7.50%
Total debt		$ 500	500
Parent Company \| 7.5% Notes Payable due 2023 [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Interest Rate (in hundredths) \| Rate	7.50%
Repayments of Debt	$ 500
Debt Instrument, Redemption Price, Percentage	100%
Parent Company \| 2.75% Notes Payable due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500
Interest Rate (in hundredths) \| Rate		2.75%
Total debt		$ 500	500
Parent Company \| 2.2% Notes Payable due 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 400
Interest Rate (in hundredths) \| Rate		2.20%
Total debt		$ 387	387
Parent Company \| 5.85% Notes Payable due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 600
Interest Rate (in hundredths) \| Rate		5.85%
Total debt		$ 600	600
Parent Company \| 4.0% Notes Payable due 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500
Interest Rate (in hundredths) \| Rate		4%
Total debt		$ 500	500
Parent Company \| 4.55% Notes Payable due 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 800
Interest Rate (in hundredths) \| Rate		4.55%
Total debt		$ 800	800
Parent Company \| 6.875% Notes Payable due 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 100
Interest Rate (in hundredths) \| Rate		6.875%
Total debt		$ 100	100
Parent Company \| 4.35% Notes Payable due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 700
Interest Rate (in hundredths) \| Rate		4.35%
Total debt		$ 700	700
Parent Company \| 3.4% Notes Payable due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750
Interest Rate (in hundredths) \| Rate		3.40%
Total debt		$ 714	714
Parent Company \| 3.1% Notes Payable due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 850
Interest Rate (in hundredths) \| Rate		3.10%
Total debt		$ 780	780
Parent Company \| 6.35% Notes Payable due 2031 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 600
Interest Rate (in hundredths) \| Rate		6.35%
Total debt		$ 600	600
Parent Company \| 6.1% Notes Payable due 2032
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750
Interest Rate (in hundredths) \| Rate		6.10%
Total debt		$ 750	750
Parent Company \| 6.0% Notes Payable due 2035 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 400
Interest Rate (in hundredths) \| Rate		6%
Total debt		$ 400	400
Parent Company \| 4.95% Notes Payable due 2047 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 700
Interest Rate (in hundredths) \| Rate		4.95%
Total debt		$ 689	689
Parent Company \| 5.2% Notes Payable due 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,000
Interest Rate (in hundredths) \| Rate		5.20%
Total debt		$ 1,000	1,000
Parent Company \| 4.45% Notes Payable due 2049 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750
Interest Rate (in hundredths) \| Rate		4.45%
Total debt		$ 653	673
Parent Company \| 4.5% Notes Payable due 2050 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500
Interest Rate (in hundredths) \| Rate		4.50%
Total debt		$ 443	443
Parent Company \| 7.15% Notes Payable due 2051 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 300
Interest Rate (in hundredths) \| Rate		7.15%
Total debt		$ 300	$ 300

EQUITY (Details)

EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Mar. 31, 2022
Common Stock, Dividends, Per Share, Cash Paid		$ 0.955	$ 0.935
Dividends, Preferred Stock, Cash Paid		$ 0.3
Preferred Stock, Dividends, Declared		$ 0	$ 0
Series E Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage		5.50%
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared	$ 0.955
Dividends Payable, Date of Record	May 01, 2023
Dividends Payable, Date to be Paid	May 15, 2023
Preferred Stock, Dividends, Declared	$ 0.3

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Risk management assets/liabilities - January 1	$ (58)
Retirement and other postretirement benefit plan obligations - January 1	(55)
Risk-management assets/liabilities of unconsolidated affiliates - January 1	5
Accumulated other comprehensive loss - January 1	(108)
Other comprehensive income (loss) before reclassification, risk-management assets/liabilities	23	$ (72)
Other comprehensive income before reclassification, retirement and postretirement benefit plan obligations	0
Other comprehensive income (loss) before reclassification, risk-management assets/liabilities of unconsolidated affiliates	(2)
Other comprehensive income before reclassifications	21
Other comprehensive income (loss) reclassification adjustment from AOCI for risk-management assets/liabilities, net of tax	(12)	66
Other comprehensive income, retirement and other postretirement benefit plans, reclassification adjustment from AOCI, net of tax	0
Other comprehensive income, reclassification adjustment from AOCI for other comprehensive income attributable to unconsolidated affiliates, net of tax	0
Other comprehensive income, reclassification adjustment included in net income, net of tax	(12)
Other comprehensive income, risk-management assets/liabilities, after reclassification adjustment, net of tax	11
Other comprehensive income, retirement and other postretirement benefit plans, after reclassification adjustment, net of tax	0	3
Other comprehensive income (loss), risk-management assets/liabilities of unconsolidated affiliates, net of tax	(2)
Other comprehensive income, net of tax	9	$ 4
Risk management assets/liabilities - March 31	(47)
Retirement and other postretirement benefit plan obligations - March 31	(55)
Risk-management assets/liabilities of unconsolidated affiliates - March 31	3
Accumulated other comprehensive loss - March 31	(99)
Cash Flow Hedging [Member] \| Commodity Contracts
Unrealized gain loss on cash flow hedges net of tax accumulated other comprehensive income	48
Price risk cash flow hedge unrealized gain (loss) to be reclassified during next 12 months	48
Cash Flow Hedging [Member] \| Interest Rate Contracts
Amount of accumulated other comprehensive income (loss) attributable primarily to settled interest-rate swaps	(95)
Amount of accumulated other comprehensive income attributable primarily to forward starting interest-rate swaps	0
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	$ (18)

EARNINGS PER SHARE EARNINGS P_3

EARNINGS PER SHARE EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Basic EPS
Net income available for common stock	$ 1,049	$ 391
Shares	448	447
Earnings per share, basic	$ 2.34	$ 0.87
Diluted EPS
Effect of dilutive securities	$ 0	$ 0
Effect of dilutive securities, number of shares	1	1
Net income available to common stock holders, diluted	$ 1,049	$ 391
Shares	449	448
Earnings per share, diluted	$ 2.34	$ 0.87

UNCONSOLIDATED AFFILIATES (Deta

UNCONSOLIDATED AFFILIATES (Details) - USD ($) $ in Millions	3 Months Ended
UNCONSOLIDATED AFFILIATES (Details) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	$ 40	$ 36
Unconsolidated Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Related Party Transaction, Expenses from Transactions with Related Parties	28	15
Northern Border Pipeline
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	24	20
Overland Pass Pipeline
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	9	5
Roadrunner
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	7	9
Other Unconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	$ 0	$ 2

REVENUES (Details)

REVENUES (Details) $ in Millions	3 Months Ended
REVENUES (Details) $ in Millions	Mar. 31, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 2,133
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	328
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	376
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	284
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	271
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 874
Remaining Contract Terms [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Performance Obligation, Contract Term	one month to 22 years

SEGMENTS (Details)

SEGMENTS (Details) - USD ($) $ in Millions	3 Months Ended
SEGMENTS (Details) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenues	$ 4,521	$ 5,445
Cost of sales and fuel (exclusive of depreciation and operating costs)	(3,347)	(4,366)
Operating costs	(296)	(264)
Depreciation and amortization	(162)	(154)
Equity in net earnings from investments	40	36
Other operating income (expense), net	781	1
Investments in unconsolidated affiliates	789	797	$ 802
Total assets	24,464	23,993	$ 24,379
Capital expenditures	289	257
Net income	1,049	391
Interest expense, net of capitalized interest	166	172
Income tax expense	330	122
Noncash compensation expense and other	10	25
Other corporate costs	(8)	3
Medford Settlement Gain	779	0
Medford Incident
Segment Reporting Information [Line Items]
Third Party Fractionation Costs	46
Medford Incident \| Business Interruption - Settlement Proceeds
Segment Reporting Information [Line Items]
Medford Settlement Gain	779
Medford Incident \| Business Interruption - Settlement Proceeds Less Third Party Frac Costs
Segment Reporting Information [Line Items]
Medford Settlement Gain	733
Natural Gas Gathering And Processing [Member]
Segment Reporting Information [Line Items]
Revenues	1,258	1,592
Cost of sales and fuel (exclusive of depreciation and operating costs)	(875)	(1,289)
Operating costs	(105)	(94)
Depreciation and amortization	(67)	(63)
Equity in net earnings from investments	0	2
Other operating income (expense), net	1
Noncash compensation expense	4
Segment adjusted EBITDA	283	215
Investments in unconsolidated affiliates	26	27
Total assets	6,899	6,914
Capital expenditures	98	93
Noncash compensation expense and other		4
Natural Gas Gathering And Processing [Member] \| Natural Gas Gathering and Processing Intersegment [Member]
Segment Reporting Information [Line Items]
Revenues	631	1,000
Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenues	3,735	4,734
Cost of sales and fuel (exclusive of depreciation and operating costs)	(3,095)	(4,089)
Operating costs	(152)	(129)
Depreciation and amortization	(78)	(75)
Equity in net earnings from investments	9	5
Other operating income (expense), net	778
Noncash compensation expense	6
Segment adjusted EBITDA	1,281	528
Investments in unconsolidated affiliates	413	415
Total assets	14,437	15,102
Capital expenditures	137	126
Noncash compensation expense and other		7
Natural Gas Liquids \| Natural Gas Liquids Regulated [Member]
Segment Reporting Information [Line Items]
Revenues	638	604
Cost of sales and fuel (exclusive of depreciation and operating costs)	(184)	(146)
Operating costs	(87)	(75)
Natural Gas Liquids \| Natural Gas Liquids Regulated [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	577	547
Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenues	171	149
Cost of sales and fuel (exclusive of depreciation and operating costs)	(14)	(17)
Operating costs	(45)	(41)
Depreciation and amortization	(17)	(15)
Equity in net earnings from investments	31	29
Other operating income (expense), net	0
Noncash compensation expense	2
Segment adjusted EBITDA	145	124
Investments in unconsolidated affiliates	349	355
Total assets	2,239	2,154
Capital expenditures	46	23
Noncash compensation expense and other		4
Natural Gas Pipelines \| Natural Gas Pipelines Regulated [Member]
Segment Reporting Information [Line Items]
Revenues	116	126
Cost of sales and fuel (exclusive of depreciation and operating costs)	(15)	(21)
Operating costs	(38)	(35)
Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	5,164	6,475
Cost of sales and fuel (exclusive of depreciation and operating costs)	(3,984)	(5,395)
Operating costs	(302)	(264)
Depreciation and amortization	(162)	(153)
Equity in net earnings from investments	40	36
Other operating income (expense), net	779
Noncash compensation expense	12
Segment adjusted EBITDA	1,709	867
Investments in unconsolidated affiliates	788	797
Total assets	23,575	24,170
Capital expenditures	281	242
Noncash compensation expense and other		15
Other and Eliminations
Segment Reporting Information [Line Items]
Revenues	(643)	(1,030)
Cost of sales and fuel (exclusive of depreciation and operating costs)	637	1,029
Operating costs	6	0
Depreciation and amortization	0	(1)
Equity in net earnings from investments	0	0
Investments in unconsolidated affiliates	1	0
Total assets	889	(177)
Capital expenditures	8	15
Noncustomer [Domain]
Segment Reporting Information [Line Items]
Revenues	40	(175)
NGL and Condensate Sales [Member]
Segment Reporting Information [Line Items]
Revenues	3,561	4,525
NGL and Condensate Sales [Member] \| Natural Gas Gathering And Processing [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	644	1,004
NGL and Condensate Sales [Member] \| Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,551	4,549
NGL and Condensate Sales [Member] \| Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
NGL and Condensate Sales [Member] \| Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,195	5,553
NGL and Condensate Sales [Member] \| Other and Eliminations
Segment Reporting Information [Line Items]
Revenues	(634)	(1,028)
Residue Natural Gas Sales [Member]
Segment Reporting Information [Line Items]
Revenues	593	577
Residue Natural Gas Sales [Member] \| Natural Gas Gathering And Processing [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	568	551
Residue Natural Gas Sales [Member] \| Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
Residue Natural Gas Sales [Member] \| Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	25	26
Residue Natural Gas Sales [Member] \| Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	593	577
Residue Natural Gas Sales [Member] \| Other and Eliminations
Segment Reporting Information [Line Items]
Revenues	0	0
Gathering, Processing and Exchange Services Revenue
Segment Reporting Information [Line Items]
Revenues	169	167
Gathering, Processing and Exchange Services Revenue \| Natural Gas Gathering And Processing [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	38	31
Gathering, Processing and Exchange Services Revenue \| Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	131	136
Gathering, Processing and Exchange Services Revenue \| Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
Gathering, Processing and Exchange Services Revenue \| Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	169	167
Gathering, Processing and Exchange Services Revenue \| Other and Eliminations
Segment Reporting Information [Line Items]
Revenues	0	0
Transportation and Storage Revenue [Member]
Segment Reporting Information [Line Items]
Revenues	193	168
Transportation and Storage Revenue [Member] \| Natural Gas Gathering And Processing [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
Transportation and Storage Revenue [Member] \| Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	50	47
Transportation and Storage Revenue [Member] \| Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	145	123
Transportation and Storage Revenue [Member] \| Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	195	170
Transportation and Storage Revenue [Member] \| Other and Eliminations
Segment Reporting Information [Line Items]
Revenues	(2)	(2)
Other [Member]
Segment Reporting Information [Line Items]
Revenues	5	8
Other [Member] \| Natural Gas Gathering And Processing [Member]
Segment Reporting Information [Line Items]
Revenues	8	6
Other [Member] \| Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenues	3	2
Other [Member] \| Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenues	1	0
Other [Member] \| Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	12	8
Other [Member] \| Other and Eliminations
Segment Reporting Information [Line Items]
Revenues	$ (7)	$ 0