Everest Re (EG) 10-K24 Feb 232022 FY Annual reportFinancial data

Company Profile

Document And Entity Information

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
Document And Entity Information - USD ($) $ in Billions	Dec. 31, 2022	Feb. 01, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Transition Report	false
Entity File Number	1-15731
Entity Registrant Name	EVEREST RE GROUP, LTD.
Entity Incorporation State Country Code	D0
Entity Tax Identification Number	98-0365432
Entity Address Address Line 1	Seon Place – 4thFloor
Entity Address Address Line 2	141 Front Street
Entity Address Address Line 3	PO Box HM 845
Entity Address City Or Town	Hamilton
Entity Address Postal Zip Code	HM 19
Entity Address Country	BM
City Area Code	441
Local Phone Number	295-0006
Entity Well Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
Icfr Auditor Attestation Flag	true
Entity Public Float			$ 11
Security 12b Title	Common Shares, $0.01 par value
Trading Symbol	RE
Security Exchange Name	NYSE
Entity Common Stock Shares Outstanding		39,157,235
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY Certain information Shareholders,
Amendment Flag	false
Entity Central Index Key	0001095073
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Auditor Firm Id	238
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	New York, New York

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
ASSETS:
Fixed maturities - available for sale, at fair value (amortized cost: 2022, $24,191; 2021, $22,064, credit allowances: 2022, $(54); 2021, $(30))	$ 22,236	$ 22,308
Fixed maturities - held to maturity, at amortized cost, net of credit allowances (fair value: 2022, $821, credit allowances: 2022, $(9))	839
Equity securities, at fair value	281	1,826
Other invested assets	4,085	2,920
Short-term investments (cost: 2022, $1,032; 2021, $1,178)	1,032	1,178
Cash	1,398	1,441
Total investments and cash	29,872	29,673
Accrued Investment Income Receivable	217	149
Premiums receivable (net of credit allowances: 2022, $(29); 2021, $(26))	3,619	3,294
Reinsurance paid loss recoverables (net of credit allowances: 2021, $(23); 2021, $(17))	136	107
Reinsurance unpaid loss recoverables	2,105	1,946
Funds held by reinsureds	1,056	869
Deferred acquisition costs	962	872
Prepaid reinsurance premiums	610	515
Income tax asset, net	459	2
Other assets (net of credit allowances: 2022, $(5); 2021, $(4))	930	757
TOTAL ASSETS	39,966	38,185
LIABILITIES:
Reserve for losses and loss adjustment expenses	22,065	19,009
Future policy benefit reserve	29	36
Unearned premium reserve	5,147	4,610
Funds held under reinsurance treaties	13	18
Other net payable to reinsurers	567	450
Losses in course of payment	74	261
Senior notes	2,347	2,346
Long term notes	218	224
Borrowings from FHLB	519	519
Accrued interest on debt and borrowings	19	17
Unsettled securities payable	1	17
Other liabilities	526	540
Total liabilities	31,525	28,046
Commitments and contingencies (Note 15)
SHAREHOLDERS' EQUITY:
Preferred shares, par value: $0.01; 50.0 shares authorized; no shares issued and outstanding
Common shares, par value: $0.01; 200.0 shares authorized; (2022) 69.9 and (2021) 69.8 outstanding before treasury shares	1	1
Additional paid-in capital	2,302	2,274
Accumulated other comprehensive income (loss), net of deferred income tax expense (benefit) of $(250) at 2022 and $27 at 2021	(1,996)	12
Treasury shares, at cost; 30.8 shares (2022) and 30.5 shares (2021)	(3,908)	(3,847)
Retained earnings	12,042	11,700
Total shareholders' equity	8,441	10,139
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 39,966	$ 38,185

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fixed maturities - available for sale, at fair value, amortized cost	$ 24,191	$ 22,064
Fixed maturities - available for sale, at fair value, allowance for credit loss	(54)	(30)
Fixed maturities - held to maturity, at amortized cost, net of credit allowances, fair value	821
Fixed maturities - held to maturity, at amortized cost, credit allowances	(9)
Short-term investments, at cost	1,032	1,178
Premiums receivable, credit allowances	(29)	(26)
Reinsurance paid loss recoverables, credit allowances	(23)	(17)
Other assets, credit allowances	$ (5)	$ (4)
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	50,000,000	50,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common shares, par value	$ 0.01	$ 0.01
Common Stock, Shares Authorized	200,000,000	200,000,000
Common shares, outstanding	69,900,000	69,800,000
Accumulated other comprehensive income (loss), net deferred income tax expense (benefit)	$ (250)	$ 27
Treasury shares	30,800,000	30,500,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
REVENUES:
Premiums earned	$ 11,787	$ 10,406	$ 8,682
Net investment income	830	1,165	642
Net gains (losses) on investments:
Credit allowances on fixed maturity securities	(33)	(28)	(2)
Gains (losses) from fair value adjustments	(460)	236	280
Net realized gains (losses) from dispositions	38	50	(11)
Total net realized gains (losses) on investments	(455)	258	268
Other income (expense)	(102)	37	6
Total revenues	12,060	11,866	9,598
CLAIMS AND EXPENSES:
Incurred losses and loss adjustment expenses	8,100	7,391	6,551
Commission, brokerage, taxes and fees	2,528	2,209	1,873
Other underwriting expenses	682	583	511
Corporate expenses	61	68	41
Interest, fees and bond issue cost amortization expense	101	70	36
Total claims and expenses	11,472	10,321	9,013
INCOME (LOSS) BEFORE TAXES	588	1,546	585
Income tax expense (benefit)	(9)	167	71
NET INCOME (LOSS)	597	1,379	514
Other comprehensive income (loss), net of tax:
Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period	(2,037)	(488)	423
Reclassification adjustment for realized losses (gains) included in net income (loss)	89	4	(3)
Total URA(D) on securities arising during the period	(1,948)	(485)	420
Foreign currency translation adjustments	(77)	(62)	86
Benefit plan actuarial net gain (loss) for the period	15	17	(6)
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	2	6	6
Total benefit plan net gain (loss) for the period	17	23	1
Total other comprehensive income (loss), net of tax	(2,008)	(523)	507
COMPREHENSIVE INCOME (LOSS)	$ (1,411)	$ 856	$ 1,021
EARNINGS PER COMMON SHARE:
Basic	$ 15.19	$ 34.66	$ 12.81
Diluted	$ 15.19	$ 34.62	$ 12.78

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss), Net of Deferred Income Taxes [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect Period Of Adoption Adjustment [Member]	Treasury Shares At Cost [Member]
Balance at Dec. 31, 2019			$ 1	$ 2,220	$ 28	$ 10,307		$ (3,422)
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019							$ (4)
Balance, shares at Dec. 31, 2019		41,000,000
Issued during the period, net, shares		0
Treasury shares acquired, shares		(1)
Issued during the period, net
Share-based compensation plans				26
Net increase (decrease) during the period	$ 507				507
Net income (loss)	514					514
Dividends declared ($6.50 per share 2022, $6.20 per share 2021 and $6.20 per share 2020)	(249)					(249)
Purchase of treasury shares								(200)
Balance at Dec. 31, 2020	9,726		1	2,245	535	10,567		(3,622)
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2020
Balance, shares at Dec. 31, 2020		40,000,000
Issued during the period, net, shares		0
Treasury shares acquired, shares		(1)
Issued during the period, net
Share-based compensation plans				29
Net increase (decrease) during the period	(523)				(523)
Net income (loss)	1,379					1,379
Dividends declared ($6.50 per share 2022, $6.20 per share 2021 and $6.20 per share 2020)	(247)					(247)
Purchase of treasury shares								(225)
Balance at Dec. 31, 2021	$ 10,139		1	2,274	12	11,700		(3,847)
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2021
Balance, shares at Dec. 31, 2021	69,800,000	39,000,000
Issued during the period, net, shares		0
Treasury shares acquired, shares
Issued during the period, net
Share-based compensation plans				28
Net increase (decrease) during the period	$ (2,008)				(2,008)
Net income (loss)	597					597
Dividends declared ($6.50 per share 2022, $6.20 per share 2021 and $6.20 per share 2020)	(255)					(255)
Purchase of treasury shares								(61)
Balance at Dec. 31, 2022	$ 8,441		$ 1	$ 2,302	$ (1,996)	$ 12,042		$ (3,908)
Balance, shares at Dec. 31, 2022	69,900,000	39,000,000

Consolidated Statements Of Ch_2

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Consolidated Statements Of Changes In Shareholders' Equity [Abstract]
Dividends declared	$ 6.50	$ 6.20	$ 6.20

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 597	$ 1,379	$ 514
Adjustments to reconcile net income to net cash provided by operating activities:
Decrease (increase) in premiums receivable	(435)	(649)	(387)
Decrease (increase) in funds held by reinsureds, net	(197)	(151)	(219)
Decrease (increase) in reinsurance recoverables	(413)	(125)	(151)
Decrease (increase) in income taxes	(181)	68	240
Decrease (increase) in prepaid reinsurance premiums	(166)	(128)	55
Increase (decrease) in reserve for losses and loss adjustment expenses	3,477	2,805	2,631
Increase (decrease) in future policy benefit reserve	(7)	(2)	(5)
Increase (decrease) in unearned premiums	655	1,146	404
Increase (decrease) in other net payable to reinsurers	201	186	(24)
Increase (decrease) in losses in course of payment	(186)	134	75
Change in equity adjustments in limited partnerships	(94)	(613)	(104)
Distribution of limited partnership income	180	211	122
Change in other assets and liabilities, net	(291)	(290)	(99)
Non-cash compensation expense	45	43	39
Amortization of bond premium (accrual of bond discount)	55	76	50
Net realized (gains) losses on investments	455	(258)	(268)
Net cash provided by (used in) operating activities	3,695	3,833	2,874
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from fixed maturities matured/called/repaid - available for sale	2,626	3,893	2,586
Proceeds from fixed maturities sold - available for sale	1,403	1,916	1,951
Proceeds from fixed maturities matured/called/repaid - held to maturity	39
Proceeds from equity securities sold	2,217	990	376
Distributions from other invested assets	266	257	310
Cost of fixed maturities acquired - available for sale	(7,344)	(8,825)	(7,189)
Cost of fixed maturities acquired - held to maturity	(153)
Cost of equity securities acquired	(1,003)	(1,098)	(637)
Cost of other invested assets acquired	(1,547)	(757)	(557)
Net change in short-term investments	149	(43)	(718)
Net change in unsettled securities transactions	(71)	(203)	195
Net cash provided by (used in) investing activities	(3,418)	(3,869)	(3,683)
CASH FLOWS FROM FINANCING ACTIVITIES:
Common shares issued during the period for share-based compensation, net of expense	(17)	(14)	(14)
Purchase of treasury shares	(61)	(225)	(200)
Dividends paid to shareholders	(255)	(247)	(249)
Proceeds from issuance of senior notes		968	979
Cost of debt repurchase	(6)		(11)
Net FHLB borrowings (repayments)		209	310
Cost of shares withheld on settlements of share-based compensation awards	(20)	(17)	(16)
Net cash provided by (used in) financing activities	(359)	674	800
EFFECT OF EXCHANGE RATE CHANGES ON CASH	39	1	3
Net increase (decrease) in cash	(42)	639	(6)
Cash, beginning of period	1,441	802	808
Cash, end of period	1,398	1,441	802
SUPPLEMENTAL CASH FLOW INFORMATION:
Income taxes paid (recovered)	171	98	(170)
Interest paid	98	62	28
NON-CASH TRANSACTIONS:
Reclassification of specific investments from fixed maturity securities, available for sale at fair value to fixed maturity securities, held to maturity at amortized cost net of credit allowances	$ 722

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
Summary Of Significant Accounting Policies	Dec. 31, 2022
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	1. A. Everest and Group and its subsidiaries. The principles following domestic (“Everest International Service Reinsurance Compañia (“Holdings (“Everest Limited (Ireland) Insurance”), Reinsurance (Bermuda) Leisure and Specialty Company (“Everest Indemnity Everest Security”). dollars. The Company in Company is considered to be the primary beneficiary. as entity. The preparation assumptions liabilities) at the date of the financial reporting period. Certain presentation. B. Fixed result other maturity, review. factors. well as interest related accumulated other comprehensive likely than the operations the Company not have to the statements related impairment is analysis is the quantitative assessment difference the credit allowance account through comprehensive income (loss). Fixed both the positive the determined in the evaluates characteristics considerations, incorporation current expected credit losses. The Company interest that has not been accrued, it is recorded as income The Company’s with enhancements or relevant information provided Retrospective Company’s reviewed the new yield to prepayment calculation of projected prepayments For income on all fixed maturities income in the consolidated statements Short-term stated at cost, which appro Realized publicly securities flow characteristics committees qualified Company valuation illiquid, the determine fair value. Other investments. recorded surrender value and changes in the policy cash Cash represents withdrawal or usage. Amounts C. The credit losses. and establishes an allowance for estimated Premiums premiums, are primarily due these adjusted for current economic A portion of the rated pay the for Retrospectively-rated incurred. insurance could be adversely deductible Company allowance within receivable exposed assigned Credit ratings and historical corporate ratings required considers the current economic The Company and records Company’s consolidate The cessions allowance balances. recoverable or charge Due to the inherent due, it is possible that future adjustments be required, cash flows in a particular quarter or annual period. The allowance factors recoverable net in collateral factors are as economic outcomes. the current economic environment The adjustment expenses in the Company’s Write-offs of is deemed uncollectible. D. Acquisition costs, fees Company’s reinsurance premiums business investment income. E. The reserve received from based on past asbestos which liabilities reviewed made. liability. presented net of reinsurance. Accruals percentage to arrangements are are estimated based on expected F. Liabilities policy particular period may fluctuate from G. Written contracts. reinsurance estimated premium catastrophe coverage reflects been reported to the Company, H. Prepaid reinsurance 10 % December 31, credit, thereby limiting the credit risk to I. Holdings subsidiaries and branches of subsidiaries Holdings’ income reporting and income tax accounting rules. As disproportionate income tax J. The Company base transactional activity and liabilities the consolidated for income (loss) and accumulated in shareholders’ The business the end of period for the balance sheets and the average income statements. deferred income taxes, K. Basic shares outstanding. under various would participate in the earnings of the entity. Net income basic and dilutive shares outstanding. Years Ended December 31, (Amounts in millions, except per share amounts) 2022 2021 2020 Net income (loss) per share: Numerator Net income (loss) $ 597 $ 1,379 $ 514 Less: (255) (247) (249) Undistributed earnings 342 1,132 265 Percentage allocated to common shareholders (1) 98.7 % 98.7 % 98.7 % 337 1,117 262 Add: 252 244 246 Numerator for basic and diluted earnings per common share $ 589 $ 1,361 $ 508 Denominator Denominator for basic earnings per weighted-average common shares 39 39 40 Effect of dilutive securities: Options - - - Denominator for diluted earnings per adjusted weighted-average common shares 39 39 40 Per common share net income (loss) Basic $ 15.19 $ 34.66 $ 12.81 Diluted $ 15.19 $ 34.62 $ 12.78 (1) Basic weighted-average common shares outstanding 39 39 40 Basic weighted-average common shares outstanding 39 40 40 Percentage allocated to common shareholders 98.7 % 98.7 % 98.7 % (Some amounts may not reconcile due to rounding.) There were no Options granted no L. The Company, two M. Share-based compensation the grant deferred until the time the award N. The Company assessed Board on if any, accounting standards to Group.

Investments

Investments	12 Months Ended
Investments	Dec. 31, 2022
Investments [Abstract]
Investments	2. The appreciation/(depreciation) indicated. At December 31, 2022 Amortized Allowance for Unrealized Unrealized Fair (Dollars in millions) Cost Credit Losses Appreciation Depreciation Value Fixed maturity securities - available for sale: U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,334 $ - $ 6 $ (82) $ 1,257 Obligations of U.S. states and political subdivisions 444 - 2 (32) 413 Corporate securities 7,044 (45) 31 (561) 6,469 Asset-backed securities 4,229 - 5 (171) 4,063 Mortgage-backed securities Commercial 1,023 - - (105) 919 Agency residential 3,382 - 7 (290) 3,099 Non-agency residential 5 - - (1) 4 Foreign government securities 1,586 - 8 (179) 1,415 Foreign corporate securities 5,143 (10) 23 (562) 4,596 Total fixed maturity securities - available for sale $ 24,191 $ (54) $ 81 $ (1,982) $ 22,236 (Some amounts may not reconcile due to rounding.) At December 31, 2021 Amortized Allowance for Unrealized Unrealized Fair (Dollars in millions) Cost Credit Losses Appreciation Depreciation Value Fixed maturity securities - available for sale: U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,407 $ - $ 24 $ (10) $ 1,421 Obligations of U.S. states and political subdivisions 559 - 29 (1) 587 Corporate securities 7,444 (19) 195 (63) 7,557 Asset-backed securities 3,579 (8) 22 (12) 3,582 Mortgage-backed securities Commercial 1,032 - 38 (6) 1,064 Agency residential 2,361 - 33 (19) 2,375 Non-agency residential 7 - - - 7 Foreign government securities 1,424 - 42 (28) 1,438 Foreign corporate securities 4,251 (3) 95 (65) 4,279 Total fixed maturity securities - available for sale $ 22,064 $ (30) $ 478 $ (203) $ 22,308 (Some amounts may not reconcile due to rounding.) The appreciation/(depreciation) and fair At December 31, 2022 Amortized Allowance for Unrealized Unrealized Fair (Dollars in millions) Cost Credit Losses Appreciation Depreciation Value Fixed maturity securities - held to maturity: Corporate securities $ 152 $ (2) $ - $ (6) $ 144 Asset-backed securities 661 (6) 2 (15) 642 Mortgage-backed securities - Commercial 7 - - - 7 Foreign corporate securities 28 (1) 2 - 28 Total fixed maturity securities - held to maturity $ 848 $ (9) $ 3 $ (22) $ 821 (Some amounts may not reconcile due The amortized table fixed maturity totals for mortgage-backed At December 31, 2022 At December 31, 2021 Amortized Fair Amortized Fair (Dollars in millions) Cost Value Cost Value Fixed maturity securities – available for sale: $ 1,331 $ 1,314 $ 1,399 $ 1,398 8,131 7,546 7,075 7,154 4,636 4,057 5,004 5,101 1,454 1,233 1,606 1,627 Asset-backed securities 4,229 4,063 3,579 3,582 Mortgage-backed securities: Commercial 1,023 919 1,032 1,064 Agency residential 3,382 3,099 2,361 2,375 Non-agency residential 5 4 7 7 Total fixed maturity securities -available for sale $ 24,191 $ 22,236 $ 22,064 $ 22,308 (Some amounts may not reconcile due to rounding.) The amortized by maturity securities. As the stated for mortgage-backed and At December 31, 2022 Amortized Fair (Dollars in millions) Cost Value Fixed maturity securities – held to maturity: $ 5 $ 5 63 61 43 41 68 65 Asset-backed securities 661 642 Mortgage-backed securities: Commercial 7 7 Total fixed maturity securities - held to maturity $ 848 $ 821 (Some amounts may not reconcile due During available reclassified at 722 was subsequently recognized unrealized 53 sheet and the remaining life of the securities. The Company evaluated as of maturity, rates, develop an estimate a high credit quality and are all rated The changes following sources for the periods Years Ended December 31, (Dollars in millions) 2022 2021 Increase (decrease) during the period between the fair value and cost of investments carried at fair value, and deferred taxes thereon: Fixed maturity securities and short-term investments $ (2,225) $ (542) Change in unrealized appreciation (depreciation), pre-tax (2,225) (542) Deferred tax benefit (expense) 277 58 Change in unrealized appreciation (depreciation), net of deferred taxes, included in shareholders’ equity $ (1,948) $ (485) (Some amounts may not reconcile due to rounding.) The securities, individual securities had been in a continuous unrealized Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for U.S. Treasury securities and U.S. government agencies and corporations $ 668 $ (31) $ 487 $ (52) $ 1,155 $ (82) Obligations of U.S. states and 235 (23) 27 (9) 261 (32) Corporate securities 4,143 (326) 1,316 (234) 5,459 (561) Asset-backed securities 3,204 (142) 456 (29) 3,661 (171) Mortgage-backed securities Commercial 806 (90) 101 (15) 907 (105) Agency residential 1,905 (132) 870 (158) 2,776 (289) Non-agency residential 4 - 1 (1) 4 - Foreign government securities 985 (100) 321 (79) 1,306 (179) Foreign corporate securities 3,264 (372) 853 (189) 4,117 (561) Total $ 15,213 $ (1,217) $ 4,432 $ (764) $ 19,645 $ (1,982) Securities where an allowance for credit 2 - - - 2 - Total fixed $ 15,215 $ (1,217) $ 4,432 $ (764) $ 19,647 $ (1,982) (Some amounts may not reconcile due to rounding.) Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for Due in one year or less $ 989 $ (19) $ 40 $ (7) $ 1,029 $ (26) Due in one year through five years 4,935 (383) 1,645 (209) 6,580 (592) Due in five years through ten years 2,698 (360) 911 (230) 3,609 (590) Due after ten years 672 (91) 408 (116) 1,080 (207) Asset-backed securities 3,204 (142) 456 (29) 3,661 (171) Mortgage-backed securities 2,715 (222) 972 (173) 3,687 (395) Total $ 15,213 $ (1,217) $ 4,432 $ (764) $ 19,645 $ (1,982) Securities where an allowance for credi 2 - - - 2 - Total fixed $ 15,215 $ (1,217) $ 4,432 $ (764) $ 19,647 $ (1,982) (Some amounts may not reconcile due to rounding.) The aggregate December 31, 2022 were $ 19.6 2.0 issuer December 31, 2022, 5.2 % of the The market value of the securities 0.2 % of the Company’s concentration of unrealized 1.2 maturity securities that of securities and 1.1 that 764 million of year securities and 732 that were rated there interest obligations. and principal payments. The these securities; and it is more of principal and interest payments. The securities, individual securities presented 16 (0.4) depreciation as an allowance for credit losses. Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for U.S. Treasury securities and U.S. government agencies and corporations $ 504 $ (6) $ 92 $ (4) $ 596 $ (10) Obligations of U.S. states and 51 (1) 3 - 54 (1) Corporate securities 2,133 (38) 473 (24) 2,605 (63) Asset-backed securities 1,954 (11) 42 (1) 1,996 (12) Mortgage-backed securities Commercial 222 (3) 40 (3) 262 (6) Agency residential 1,101 (12) 280 (7) 1,381 (19) Non-agency residential 2 - - - 2 - Foreign government securities 392 (10) 101 (18) 493 (28) Foreign corporate securities 1,735 (46) 211 (18) 1,945 (65) Total fixed $ 8,094 $ (128) $ 1,241 $ (75) $ 9,335 $ (203) (Some amounts may not reconcile due to rounding.) Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for Due in one year or less $ 130 $ (2) $ 137 $ (12) $ 267 $ (14) Due in one year through five years 2,165 (35) 446 (29) 2,612 (64) Due in five years through ten years 1,728 (47) 244 (22) 1,972 (69) Due after ten years 792 (16) 51 (3) 843 (19) Asset-backed securities 1,954 (11) 42 (1) 1,996 (12) Mortgage-backed securities 1,325 (15) 320 (10) 1,646 (25) Total fixed $ 8,094 $ (128) $ 1,241 $ (75) $ 9,335 $ (203) (Some amounts may not reconcile due to rounding.) The aggregate December 31, 2021 were $ 9.3 203 issuer December 31, 2021, 2.7 % of the The market value of the securities 0.5 % of the Company’s concentration 128 fixed comprised government 116 investment 75 losses related to backed securities. 72 grade cash flow mortgage-backed securities still The components of net investment Years Ended December 31, (Dollars in millions) 2022 2021 2020 Fixed maturities $ 742 $ 561 $ 542 Equity securities 16 17 19 Short-term investments and cash 28 1 5 Other invested assets Limited partnerships 75 565 113 Other 29 63 2 Gross investment income before adjustments 890 1,208 681 Funds held interest income (expense) 2 12 13 Future policy benefit reserve income (expense) - (1) (1) Gross investment income 892 1,219 692 Investment expenses (62) (54) (50) Net investment income $ 830 $ 1,165 $ 642 (Some amounts may not reconcile due to rounding.) The changes partnerships is dependent partnership. generally decline in value Company identifies the decline. The Company had 2.6 private with the partnership and 2026 . During the fourth carried within other invested assets 939 Variable Interest The primarily entity that as simple provided whether the Company has Company that most to assessment, Consolidated Financial Statements. no t hold any securities for which it is the primary beneficiary. The partnerships it is not the performance of the is limited 4.1 2.9 and Consolidated $ 2.1 during investments are generally In Company collateralized other support Company comparison subordination Company’s The investment. The components of net realized capital Years Ended December 31, (Dollars in millions) 2022 2021 2020 Fixed maturity securities: Allowance for credit losses $ (33) $ (28) $ (2) Net realized gains (losses) from dispositions (87) 17 (5) Gains (losses) from fair value adjustments - - 2 Equity securities: Net realized gains (losses) from dispositions 112 28 (9) Gains (losses) from fair value adjustments (460) 236 278 Other invested assets 13 6 2 Short-term investments gain (loss) - - 1 Total net realized gains (losses) on investments $ (455) $ 258 $ 268 (Some amounts may not reconcile due to rounding.) The credit losses for the periods indicated: Roll Forward of Allowance for Credit Losses Twelve Months Ended December 31, 2022 Foreign Corporate Asset-Backed Corporate Securities Securities Securities Total (Dollars in millions) Beginning Balance $ (19) $ (8) $ (3) $ (30) Credit losses on securities where credit losses were not previously recorded (1) (13) (6) (17) (35) Increases in allowance on previously impaired securities (20) - (1) (21) Decreases in allowance on previously impaired securities - - - - Reduction in allowance due to disposals 6 8 10 23 Balance as of December 31 $ (46) $ (6) $ (11) $ (63) (Some amounts may not reconcile due to rounding.) (1) 2 6 1 corporate securities, respectively. The proceeds and and equity securities, are presented in the table Years Ended December 31, (Dollars in millions) 2022 2021 2020 Proceeds from sales of fixed maturity securities - available for sale $ 1,403 $ 1,916 $ 1,951 Gross gains from sales 40 72 80 Gross losses from sales (127) (55) (85) Proceeds from sales of equity securities $ 2,217 $ 990 $ 376 Gross gains from sales 165 42 37 Gross losses from sales (53) (15) (46) Securities with a 1.4 or governmental insurance departments

Reserve For Losses, LAE And Fut

Reserve For Losses, LAE And Future Policy Benefit Reserve	12 Months Ended
Reserve For Losses, LAE And Future Policy Benefit Reserve	Dec. 31, 2022
Reserve For Losses, LAE And Future Policy Benefit Reserve [Abstract]
Reserve For Losses, LAE And Future Policy Benefit Reserve	3. Reserves for losses and LAE. The following summarized for the periods indicated: Years Ended December 31, (Dollars in millions) 2022 2021 2020 Gross reserves beginning of period $ 19,009 $ 16,322 $ 13,531 (1,946) (1,844) (1,641) 17,063 14,478 11,891 Incurred related to: 8,102 7,400 6,149 (2) (9) 401 8,100 7,391 6,551 Paid related to: 1,220 2,491 2,046 3,740 2,226 2,078 4,960 4,717 4,124 Foreign exchange/translation adjustment (243) (89) 161 Net reserves end of period 19,960 17,063 14,478 2,105 1,946 1,844 $ 22,065 $ 19,009 $ 16,322 (Some amounts may not reconcile due Current year 8.1 7.4 6.1 Gross and growth, year 45 offset by decrease of $ 80 The war in Russia, located United States. have impacted economic and investment The 710 million in 541 increase in by $ 511 Incurred prior years 2 ) million in 2022, ($ 9 ) million in 2021 and $ 401 development 2 ) emergence in development 9 ) releases estimates general property programs. The reinsurance, plus Company’s casualty and settled, resulting be exposed the frequency and severity of catastrophes The December 31, 2021 is presented as supplementary The Cumulative the ceding include the provide business is a reported claims for the remaining The Cumulative Number business. However, The casualty reinsurance for each of our disclosed lines Reinsurance – Casualty Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 710 $ 801 $ 788 $ 779 $ 748 $ 719 $ 699 $ 699 $ 694 $ 684 $ 11 N/A 2014 762 800 807 783 741 719 732 730 720 13 N/A 2015 777 818 814 811 795 832 832 829 47 N/A 2016 790 865 862 857 933 935 965 91 N/A 2017 870 830 837 918 926 982 132 N/A 2018 1,311 1,309 1,386 1,416 1,485 354 N/A 2019 1,683 1,748 1,751 1,775 727 N/A 2020 1,896 1,867 1,846 1,178 N/A 2021 2,454 2,449 1,829 N/A 2022 2,818 2,133 N/A $ 14,554 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 48 $ 121 $ 211 $ 310 $ 383 $ 489 $ 540 $ 565 $ 593 $ 603 2014 57 122 212 301 426 501 545 585 607 2015 57 157 263 408 497 565 611 647 2016 88 187 320 426 539 614 690 2017 80 185 316 455 575 677 2018 154 284 456 616 803 2019 208 338 511 718 2020 190 300 489 2021 214 318 2022 200 $ 5,754 All outstanding liabilities prior to 2013, net of reinsurance 916 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 9,715 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Casualty 8.9 % 7.8 % 11.7 % 12.7 % 12.5 % 10.2 % 6.8 % 4.5 % 3.6 % 1.5 % Reinsurance – Property Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 1,275 $ 930 $ 819 $ 763 $ 757 $ 753 $ 760 $ 758 $ 758 $ 757 $ 2 N/A 2014 1,343 1,181 1,030 937 933 937 930 930 928 3 N/A 2015 1,386 1,053 976 950 952 945 946 943 2 N/A 2016 1,695 1,518 1,554 1,548 1,526 1,527 1,523 10 N/A 2017 2,784 3,407 3,518 3,647 3,692 3,703 3 N/A 2018 2,611 2,486 2,488 2,426 2,379 24 N/A 2019 2,038 2,070 2,015 1,899 29 N/A 2020 2,408 2,481 2,425 240 N/A 2021 2,754 2,780 476 N/A 2022 3,257 1,898 N/A $ 20,594 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 375 $ 510 $ 638 $ 693 $ 713 $ 723 $ 732 $ 733 $ 733 $ 735 2014 366 641 769 842 874 884 891 892 893 2015 377 607 759 842 869 891 900 905 2016 469 961 1,249 1,367 1,421 1,441 1,454 2017 819 2,180 2,744 3,130 3,332 3,426 2018 545 1,525 1,878 2,065 2,136 2019 730 1,185 1,505 1,667 2020 584 1,321 1,733 2021 684 1,534 2022 652 $ 15,134 All outstanding liabilities prior to 2013, net of reinsurance 103 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 5,562 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Property 27.2 % 31.8 % 16.1 % 8.8 % 4.0 % 2.0 % 0.9 % 0.3 % 0.1 % 0.1 % Insurance – Casualty Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 393 $ 393 $ 393 $ 393 $ 351 $ 344 $ 351 $ 350 $ 350 $ 347 $ 25 $ 22,031 2014 431 457 454 460 396 397 398 397 398 32 26,449 2015 519 527 535 541 467 471 471 477 40 29,020 2016 552 550 579 612 549 538 540 53 34,164 2017 610 600 620 652 628 629 85 38,344 2018 701 705 742 755 769 154 39,029 2019 848 844 876 885 204 42,006 2020 993 1,049 1,043 416 39,545 2021 1,189 1,246 732 44,274 2022 1,367 865 37,739 $ 7,703 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 33 $ 117 $ 176 $ 225 $ 260 $ 286 $ 304 $ 311 $ 317 $ 321 2014 41 125 202 257 297 325 339 350 360 2015 44 135 219 292 353 382 413 435 2016 55 164 268 341 400 443 481 2017 54 172 280 378 453 529 2018 63 207 317 443 594 2019 72 234 397 551 2020 66 236 388 2021 109 261 2022 85 $ 4,003 All outstanding liabilities prior to 2013, net of reinsurance 127 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 3,828 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Casualty 8.1 % 17.6 % 16.8 % 15.5 % 13.4 % 8.4 % 5.7 % 3.3 % 2.1 % 1.3 % Insurance – Property Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 112 $ 98 $ 91 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ - N/A 2014 132 123 120 119 119 119 119 119 120 1 N/A 2015 173 153 144 146 144 146 146 150 1 N/A 2016 288 274 279 289 292 294 294 - N/A 2017 494 499 492 495 489 504 - N/A 2018 405 400 394 407 422 1 N/A 2019 347 347 351 363 1 N/A 2020 599 507 498 27 N/A 2021 646 579 66 N/A 2022 767 273 N/A $ 3,789 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 69 $ 93 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 2014 82 116 118 118 118 119 119 119 119 2015 102 141 142 145 146 146 147 147 2016 162 249 271 287 290 293 293 2017 179 423 457 479 496 499 2018 245 357 376 404 418 2019 227 315 339 357 2020 293 416 453 2021 328 473 2022 372 $ 3,223 All outstanding liabilities prior to 2013, net of reinsurance - Liabilities for claims and claim adjustment expenses, net of reinsurance 566 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Property 54.3 % 31.5 % 5.7 % 4.5 % 2.3 % 1.0 % 0.6 % 0.1 % 0.1 % - % Reconciliation of the Disclosure of Incurred and Claim Adjustment Expenses The reconciliation of the net incurred and adjustment expenses in the consolidated December 31, 2022 (Dollars in thousands) Net outstanding liabilities Reinsurance Casualty $ 9,715 Reinsurance Property 5,562 Insurance Casualty 3,828 Insurance Property 566 Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 19,671 Reinsurance recoverable on unpaid claims Reinsurance Casualty 150 Reinsurance Property 576 Insurance Casualty 1,220 Insurance Property 160 Total reinsurance recoverable 2,105 Insurance lines other than short-duration - Unallocated claims adjustment expenses 244 Other 45 289 Total gross liability for unpaid claims and claim adjustment expense $ 22,065 (Some amounts may not reconcile due to rounding.) Reserving Methodology The Company maintains (LAE) based on statistical becomes many factors loss ratios (3) from current estimate is and participation of the relevant responsibility for Everest’s single best estimate LAE period in which the change in estimated ultimate The from received contract submission corresponding records. certain require percentage occur. evaluation reported Everest’s of ceding companies, particularly larger ceding companies, The analysis. reasonably homogeneous loss of time 200 reserve estimates. of commonly reported and settled and casualty shorter volatility than those for the longer tail The methods, ultimate loss and LAE for each exposure Expected Loss Ratio Method: to calculate to immature appropriate for a more mature Chain losses. age-to-ultimate losses. such as homogeneous, stable least appropriate for groups Bornhuetter-Ferguson method losses premium, an a priori loss ratio, losses expected depends on the accuracy of the selected a priori loss Although the of experience losses exposure-based underwriting approaches with analytically based judgments. Key supplement the actuarially determined reserves Carried reserves at reinsurance accounting period comparing analyzes warranted. Certain reserves, estimated of derived from from ceding companies and development patterns The Company and/or asbestos. contamination land, property damage resulting from asbestos The Company’s A&E sold insurance more 20 losses. A&E following table basis for the periods indicated: At December 31, (Dollars in millions) 2022 2021 2020 Gross basis: Beginning of period reserves $ 175 $ 219 $ 258 Incurred losses 144 11 2 Paid losses (42) (55) (40) End of period reserves $ 278 $ 175 $ 219 Net basis: Beginning of period reserves $ 156 $ 198 $ 229 Incurred losses 138 - (1) Paid losses (37) (42) (30) End of period reserves $ 257 $ 156 $ 198 (Some amounts may not reconcile due to rounding.) In Concurrently Insurance Company. 100 % of the liabilities associated certain Mt. McKinley policies, which related consideration 140 amount retrocession treaty 440 300 retain liability for any On December 20, 2019, the retrocession this amendment reduced by $ 43 450 In 2022 138 m, following review. ratios. Reinsurance Recoverables. Reinsurance 2.2 2.1 2022 and December 520 23.2 %, was receivable Mt. 283 12.6 %, Reinsurance 148 6.6 %, was of America. 5 % of our receivables. Future Policy Benefit Reserve. Activity in the reserve for future policy benefits At December 31, (Dollars in thousands) 2022 2021 2020 Balance at beginning of year $ 36 $ 38 $ 43 Liabilities assumed - - - Adjustments to reserves (3) 1 (1) Benefits paid in the current year (4) (3) (4) Balance at end of year $ 29 $ 36 $ 38 (Some amounts may not reconcile due to rounding.)

Fair Value

Fair Value	12 Months Ended
Fair Value	Dec. 31, 2022
Fair Value [Abstract]
Fair Value	4. GAAP guidance regarding fair are common received measurement measurements. liability. lowest being the lowest priority. The levels in the hierarchy Level 1: identical assets or liabilities in an active market; Level 2: markets, substantially the full term of the financial instrument; Level 3: The managers. recognized process. when fixed processes addition, interest rate scenarios The investment the reasonableness Company initial party securities price validation may use At December 31, 2022, $ 1.7 majority these fair values were substantiated in 2.1 maturities, fair value were fair The December 31, 2021 97 1.3 collateralized 2.6 2.0 billion at December from publicly published sources or nationally Equity categorized exchanges are fair value. Fixed maturity have interest rate yield For pricing services rates from nationally recognized In categorized are comparable may obtain market providing the quotes. managers converted to U.S. dollars The composition follows: • comprised prices, reported trades, quoted • the similar securities, benchmark yields and credit spreads; • values securities, benchmark yields and credit spreads; • prices, reported observable inputs such as prepayment speeds, • values securities and applicable, converted to U.S. • are and models with observable inputs converted to U.S. dollars The following has recorded at fair value Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2022 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,257 $ - $ 1,257 $ - Obligations of U.S. States and political subdivisions 413 - 413 - Corporate securities 6,469 - 5,754 715 Asset-backed securities 4,063 - 3,069 994 Mortgage-backed securities Commercial 919 - 919 - Agency residential 3,099 - 3,099 - Non-agency residential 4 - 4 - Foreign government securities 1,415 - 1,415 - Foreign corporate securities 4,596 - 4,579 16 Total fixed maturities, available for sale 22,236 - 20,511 1,725 Equity securities, fair value 281 132 150 - (Some amounts may not reconcile due to rounding.) The following has recorded at fair value Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2021 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,421 $ - $ 1,421 $ - Obligations of U.S. States and political subdivisions 587 - 587 - Corporate securities 7,557 - 6,756 801 Asset-backed securities 3,582 - 2,330 1,251 Mortgage-backed securities Commercial 1,064 - 1,064 - Agency residential 2,375 - 2,375 - Non-agency residential 7 - 7 - Foreign government securities 1,438 - 1,438 - Foreign corporate securities 4,279 - 4,262 16 Total fixed maturities, available for sale 22,308 - 20,240 2,068 Equity securities, fair value 1,826 1,742 84 - (Some amounts may not reconcile due to rounding.) In 292 287 balance sheets tables as the assets are measured at The following inputs by asset type, for the periods indicated: Total Fixed Maturities, December 31, 2022 December 31, 2021 Corporate Asset-Backed Foreign Corporate Asset-Backed Foreign (Dollars in millions) Securities Securities CMBS Corporate Total Securities Securities Corporate Total Beginning balance fixed maturities $ 801 $ 1,251 $ - $ 16 $ 2,068 $ 701 $ 623 $ 6 $ 1,330 Total gains or (losses) (realized/unrealized) Included in earnings (10) - - - (10) (12) (6) - (18) Included in other comprehensive income (loss) 3 (35) - (4) (36) 4 (7) - (2) Purchases, issuances and settlements (45) 513 6 8 481 107 641 10 758 Transfers in and/or (out) of Level (35) (735) (6) (4) (779) - - - - Ending balance $ 715 $ 994 $ - $ 16 $ 1,725 $ 801 $ 1,251 $ 16 $ 2,068 The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held $ (23) $ 8 $ - $ - $ (15) $ (16) $ (8) $ - $ (24) (Some amounts may not reconcile due to rounding.) The $ 779 categories for the Company during rather the fair determined in a The classified as Level 3 within the fair value hierarchy There were no Financial Instruments Disclosed, But Not Reported, Certain financial instruments tables above. Fair 2 and 6, respectively.

Credit Facilities

Credit Facilities	12 Months Ended
Credit Facilities	Dec. 31, 2022
Credit Facilities [Abstract]
Credit Facilities	5. The 1.5 December uncommitted 440 corresponding authorization available to these committed credit facilities Years Ended December 31, (Dollars in millions) 2022 2021 2020 Credit facility interest and fees incurred - Wells Fargo Bank $ - $ - $ 1 The terms and outstanding amounts for Group Credit Facility Effective Reinsurance, five year , 800 million senior credit 2012, four year , 800 facilities, which (“Wells Fargo Bank”) is Effective this facility below. Credit Facility 39 force and which expired The following table summarizes the (Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Wells Fargo Bank Group Credit Facility $ - $ - $ 39 $ 39 12/30/2022 Bermuda Re Wells Fargo Effective February to as the “2021 Bermuda Letter 50 Effective 500 letters of credit. The following table summarizes the (Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Wells Fargo Bank Bilateral LOC Agreement $ 500 $ 463 12/29/2023 $ 500 $ 351 12/30/2022 (Some amounts may not reconcile due to rounding.) Bermuda Re Citibank Letter of Credit Facility Effective which 2020. Citibank Letter 230 credit. 140 accessible The following table summarizes the (Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bermuda Re Citibank LOC Facility- $ 230 $ 1 1/21/2023 $ 230 $ 4 02/28/2022 4 2/28/2023 1 03/01/2022 1 3/1/2023 1 11/24/2022 1 8/15/2023 217 12/31/2022 3 9/23/2023 1 8/15/2023 212 12/31/2023 1 9/23/2023 Bermuda Re Citibank LOC Facility 140 87 12/31/2023 140 84 12/31/2022 18 12/30/2026 23 12/30/2025 Total Citibank Bilateral $ 370 $ 329 $ 370 $ 333 (Some amounts may not reconcile due to rounding.) Bermuda Re Bayerische Landesbank Effective Landesbank, Facility”. issuance of up to $ 200 (Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bayerische Landesbank Bilateral Secured $ 200 $ 183 12/31/2023 $ 200 $ 155 12/31/2022 (Some amounts may not reconcile due to rounding.) Bermuda Re Bayerische Landesbank Effective Bayerische Landesbank, of Credit Facility”. for the committed issuance of up to 150 The following table summarizes the (Dollars in millions) At December 31, 2022 Bank Commitment In Use Date of Expiry Bayerische Landesbank Unsecured Bilateral LOC Agreement - Committed $ 150 $ 150 12/31/2023 (Some amounts may not reconcile due to rounding.) Bermuda Re Lloyd’s Effective October Markets Lloyd’s 50 and subject to credit approval a maximum 250 The following table summarizes the (Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bermuda Re Lloyd's Bank Credit Facility-Committed $ 50 $ 50 12/31/2023 $ 50 $ 46 12/31/2022 Bermuda Re Lloyd's Bank Credit Facility-Uncommitted 200 136 12/31/2023 - - Total Bermuda Re Lloyd's Bank Credit Facility $ 250 $ 186 $ 50 $ 46 (Some amounts may not reconcile due to rounding.) Bermuda Re Barclays Credit Effective an agreement provides for the committed issuance 200 The following table summarizes the (Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bermuda Re Barclays Credit Facility $ 200 $ 179 12/31/2023 $ 200 $ 186 12/31/2022 (Some amounts may not reconcile due to rounding.) Bermuda Re Nordea Bank Letter of Credit Effective November New Letter of 200 and 100 $ 300 The following table summarizes the (Dollars in millions) At December 31, 2022 Bank Commitment In Use Date of Expiry Nordea Bank ABP, NY Unsecured LOC Facility - Committed $ 200 $ 50 12/31/2023 Nordea Bank ABP, NY Unsecured LOC Facility - Uncommitted 100 100 12/31/2023 Total Nordea Bank ABP, $ 300 $ 150 (Some amounts may not reconcile due Federal Home Loan Bank Membership Everest borrow up 10 % of its approximately 22.4 2.2 December 519 incurred 4 1 respectively. 4.5 % additional membership stock.

Senior Notes

Senior Notes	12 Months Ended
Senior Notes	Dec. 31, 2022
Senior Notes [Abstract]
Senior Notes	6. The table but due to limited trading activity, December 31, 2022 December 31, 2021 Consolidated Consolidated Principal Balance Sheet Balance Sheet (Dollars in millions) Date Issued Date Due Amounts Market Value Amount Market Value 4.868 % Senior notes 6/5/2014 6/1/2044 $ 400 $ 397 $ 343 $ 397 $ 504 3.5 % Senior notes 10/7/2020 10/15/2050 1,000 981 677 980 1,055 3.125 % Senior notes 10/4/2021 10/15/2052 1,000 969 627 969 983 $ 2,400 $ 2,347 $ 1,647 $ 2,346 $ 2,542 Interest expense incurred in Years Ended December 31, (Dollars in millions) Interest Paid Payable Dates 2022 2021 2020 4.868 % Senior Notes semi-annually June 1/December 1 $ 19 $ 19 $ 19 3.5 % Senior Notes semi-annually April 15/October 15 35 35 8 3.125 % Senior Notes semi-annually April 15/October 15 32 8 - $ 86 $ 62 $ 28 (Some amounts may not reconcile due to rounding.)

Long Term Subordinated Notes

Long Term Subordinated Notes	12 Months Ended
Long Term Subordinated Notes	Dec. 31, 2022
Long Term Subordinated Notes [Abstract]
Long Term Subordinated Notes	7. The value considered Level 2 in the fair value Maturity Date December 31, 2022 December 31, 2021 Original Consolidated Consolidated Principal Balance Sheet Balance Sheet (Dollars in millions) Date Issued Amount Scheduled Final Amount Market Value Amount Market Value Long-term subordinated notes 4/26/2007 $ 400 5/15/2037 5/1/2067 $ 218 $ 187 $ 224 $ 216 During the fixed May 3, 2007 May 14, 2017 , interest 6.6 %, payable semi-annually in arrears November 15, 2007 . 3 238.5 August 15 one for up ten quarterly for to February 14, 2023 is 6.99 %. Holdings may redeem the 100 % of the principal amount date and May 1, 2047 certain subordinated 4.868 % senior June 1, 2044 , 3.5 % senior October 15, 2050 3.125 % senior due October 15, 2052 subordinated notes. In initiation repurchased 6 December 31, 2022. 1 Interest indicated: Years Ended December 31, (Dollars in millions) 2022 2021 2020 Interest expense incurred $ 9 $ 6 $ 8

Collateralized Reinsurance And

Collateralized Reinsurance And Trust Agreements	12 Months Ended
Collateralized Reinsurance And Trust Agreements	Dec. 31, 2022
Collateralized Reinsurance And Trust Agreements [Abstract]
Collateralized Reinsurance And Trust Agreements	8. Certain investments December 31, 2.4 122 of restricted 1.7 includes $ 190 The Company Logan Re is 100 % of the voting Group. by risk/peril and across different The segregated accounts and Years Ended December 31, Mt. Logan Re Segregated Accounts 2022 2021 2020 (Dollars in millions) Ceded written premiums 201 341 303 Ceded earned premiums 206 333 306 Ceded losses and LAE 191 282 241 Assumed written premiums 5 12 19 Assumed earned premiums 5 12 19 Effective Logan 269 accident years 2002 2015 . of 252 agreement 319 liability. 2022, the Company has commuted this reinsurance The (“Kilimanjaro”), reinsurance earthquake events. (Dollars in millions) Class Description Effective Date Expiration Date Limit Coverage Basis Series 2018-1 Class A-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/30/2018 5/5/2023 $ 63 Aggregate Series 2018-1 Class B-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/30/2018 5/5/2023 200 Aggregate Series 2019-1 Class A-1 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2023 150 Occurrence Series 2019-1 Class B-1 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2023 275 Aggregate Series 2019-1 Class A-2 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2024 150 Occurrence Series 2019-1 Class B-2 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2024 275 Aggregate Series 2021-1 Class A-1 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/21/2025 150 Occurrence Series 2021-1 Class B-1 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/21/2025 85 Aggregate Series 2021-1 Class C-1 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/21/2025 85 Aggregate Series 2021-1 Class A-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/20/2026 150 Occurrence Series 2021-1 Class B-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/20/2026 90 Aggregate Series 2021-1 Class C-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/20/2026 90 Aggregate Series 2022-1 Class A US, Canada, Puerto Rico – Named Storm and Earthquake 6/22/2022 6/22/2025 300 Aggregate Total available limit as of $ 2,063 Recoveries estimated The recognized catastrophe event retentions or aggregate Kilimanjaro to reinsurance trusts government money market (Dollars in millions) Note Series Issue Date Maturity Date Amount Series 2018-1 Class A-2 4/30/2018 5/5/2023 $ 63 Series 2018-1 Class B-2 4/30/2018 5/5/2023 200 Series 2019-1 Class A-1 12/12/2019 12/19/2023 150 Series 2019-1 Class B-1 12/12/2019 12/19/2023 275 Series 2019-1 Class A-2 12/12/2019 12/19/2024 150 Series 2019-1 Class B-2 12/12/2019 12/19/2024 275 Series 2021-1 Class A-1 4/8/2021 4/21/2025 150 Series 2021-1 Class B-1 4/8/2021 4/21/2025 85 Series 2021-1 Class C-1 4/8/2021 4/21/2025 85 Series 2021-1 Class A-2 4/8/2021 4/20/2026 150 Series 2021-1 Class B-2 4/8/2021 4/20/2026 90 Series 2021-1 Class C-2 4/8/2021 4/20/2026 90 Series 2022-1 Class A 6/22/2022 6/22/2025 300 $ 2,063

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2022
Leases [Abstract]
Leases	9. The Company course of business. a straight-line basis over the The exercise related options. lease if with terms of the underlying lease. Supplemental information related Year Ended December 31, (Dollars in thousands) 2022 2021 Lease expense incurred: Operating lease cost $ 28 $ 27 At December 31, (Dollars in millions) 2022 2021 Operating lease right of use assets $ 128 $ 139 Operating lease liabilities 147 158 Year Ended December 31, (Dollars in millions) 2022 2021 Operating cash flows from operating leases $ (20) $ (18) At December 31, 2022 2021 Weighted average remaining operating lease term 10.8 11.6 years Weighted average discount rate on operating leases 4.08 % 4.08 % Maturities of the existing lease liabilities are expected (Dollars in thousands) 2023 $ 21 2024 21 2025 18 2026 16 2027 16 Thereafter 95 Undiscounted lease payments 187 Less: 40 Total operating lease liability $ 147

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2022
Income Taxes [Abstract]
Income Taxes	10. Under Bermuda Minister of Finance of Undertakings such taxes. All local operating Group's U.S. distribute would 5 % accrued cumulative amount provision been determined in The provision reflects the permanent differences The U.S. beneficial losses to prior tax years 35 % versus 21 % in 2018 and later years. Company 33 federal income tax cash 183 On provisions repurchase excise tax the IRS issues additional guidance, we will evaluate The significant components of the provision Years Ended December 31, (Dollars in millions) 2022 2021 2020 Current tax expense (benefit): U.S. $ 76 $ 124 $ (108) Non-U.S. 5 2 3 Total current tax expense (benefit) 81 126 (105) Deferred tax expense (benefit): U.S. (90) 38 179 Non-U.S. - 3 (3) Total deferred tax expense (90) 41 176 Total income tax expense (benefit) $ (9) $ 167 $ 71 (Some amounts may not reconcile due to rounding.) The jurisdiction between the periods indicated is provided below: Years Ended December 31, 2022 2021 2020 (Dollars in millions) U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Underwriting gain (loss) $ (81) $ 558 $ (83) $ 307 $ 24 $ (278) Net investment income 607 223 708 457 340 303 Net realized capital gains (losses) (426) (29) 266 (8) 235 33 Net derivative gain (loss) - - - 3 - 2 Corporate expenses (26) (35) (33) (34) (16) (25) Interest, fee and bond (101) - (70) - (36) (1) Other income (expense) (6) (96) 23 11 (15) 20 Pre-tax income (loss) $ (32) $ 620 $ 811 $ 735 $ 532 $ 53 Expected tax provision at the applicable (9) - 170 14 112 (10) Increase (decrease) in taxes resulting Tax exempt (4) - (4) - (4) - Dividend received deduction (3) - (1) - (1) - Proration 1 - 1 - 1 - Affiliated preferred stock 7 - 7 - 7 - Creditable foreign premium tax (11) - (13) - (12) - Tax audit settlement - - - - - - Share-based compensation tax benefits (3) - (2) - (3) - Impact of CARES Act - - - - (32) - Valuation allowance - 5 - (10) - 15 Change in uncertain tax positions - - - - - - Other 5 - 3 1 3 (5) Total income tax $ (14) $ 5 $ 161 $ 5 $ 71 $ - (Some amounts may not reconcile due to rounding.) At December 31, 2022, 2021 and 2020, no The Company’s has received any requesting refunds for 2015 and 2 5 Tax years Deferred liabilities regulations. periods indicated: Years Ended December 31, (Dollars in millions) 2022 2021 Deferred tax assets: $ 218 $ - 154 130 114 108 29 31 28 20 24 4 12 6 9 13 8 8 3 3 3 22 10 9 Total deferred tax assets 611 354 Deferred tax liabilities: 105 99 56 57 25 27 16 4 7 98 3 2 - 37 8 6 Total deferred tax liabilities 220 329 Net deferred tax assets 392 25 (25) (18) Total net deferred tax $ 367 $ 7 (Some amounts may not reconcile due to rounding.) At 25 18 respectively. Ireland, Chile, Switzerland, more likely as cumulative losses overall recorded 7 16 million do not 4 5 begin to 2028 . 3 expiring in 2027. At December 3 29 (“FTC”) carryforwards, all related to 2030 . At December 31, 2022, $ 218 available were a depends value or mature. the deferred tax likely than not, expected to The Company transactions. exercises settlement statements of operations benefits of $ 2 2 3 part income (loss) in 2022, 2021 and, 2020, respectively. ASU 2016-09 The tax benefits related to paid-in benefits related 0.6 0.6 0.6 in 2022, 2021 and 2020, respectively. For indefinitely form that would be subject to withholding tax,

Reinsurance

Reinsurance	12 Months Ended
Reinsurance	Dec. 31, 2022
Reinsurance [Abstract]
Reinsurance	11. The occurrences. certain and LAE more of the reinsurers would carefully regularly balances due Reinsurance reserves that may unpaid based Company owes any applicable will recoverables and held, under these agreements. Balances stipulated review committee each including the expected liability payout Where other credit wide offsets. See Note 1C for discussion of allowance on reinsurance Insurance due to economic equivalent to domestic there is limited history of losses from insurer Premiums indicated: Years Ended December 31, (Dollars in millions) 2022 2021 2020 Written premiums: Direct $ 4,602 $ 3,988 $ 3,218 Assumed 9,350 9,062 7,264 Ceded (1,608) (1,604) (1,365) Net written premiums $ 12,344 $ 11,446 $ 9,117 Premiums earned: Direct $ 4,218 $ 3,589 $ 3,028 Assumed 9,082 8,315 7,055 Ceded (1,513) (1,498) (1,401) Net premiums earned $ 11,787 $ 10,406 $ 8,682 Incurred losses and LAE: Direct $ 2,804 $ 2,385 $ 2,141 Assumed 6,285 5,741 5,164 Ceded (988) (735) (754) Net incurred losses and LAE $ 8,100 $ 7,391 $ 6,551

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
Other Comprehensive Income (Loss)	Dec. 31, 2022
Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income (Loss)	12. The following operations for the periods indicated: Years Ended December 31, 2022 2021 2020 (Dollars in millions) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized appreciation (depreciation) ("URA(D)") on securities - non-credit related $ (2,332) $ 295 $ (2,037) $ (548) $ 59 $ (488) $ 463 $ (40) $ 423 Reclassification of net realized losses (gains) included in net income (loss) 107 (18) 89 5 (2) 4 2 (6) (3) Foreign currency translation adjustments (82) 5 (77) (64) 2 (62) 90 (4) 86 Benefit plan actuarial net gain (loss) 18 (4) 15 22 (5) 17 (7) 1 (6) Reclassification of benefit plan liability amortization included in net income (loss) 3 (1) 2 8 (2) 6 8 (2) 6 Total other comprehensive income $ (2,285) $ 277 $ (2,008) $ (577) $ 54 $ (523) $ 556 $ (49) $ 507 The following table presents details Years Ended December 31, Affected line item within the statements AOCI component 2022 2021 operations and comprehensive (Dollars in millions) URA(D) on securities $ 107 $ 5 Other net realized capital gains (losses) (18) (2) Income tax expense (benefit) $ 89 $ 4 Net income (loss) Benefit plan net gain (loss) $ 3 $ 8 Other underwriting expenses (1) (2) Income tax expense (benefit) $ 2 $ 6 Net income (loss) The following the consolidated balance sheets for the periods Years Ended December 31, (Dollars in millions) 2022 2021 Beginning balance of URA (D) on securities $ 239 $ 724 Current period change in URA(D) of investments - non-credit related (1,948) (485) Ending balance of URA(D) on securities (1,709) 239 Beginning balance of foreign currency translation adjustments (177) (115) Current period change in foreign currency translation adjustments (77) (62) Ending balance of foreign currency translation adjustments (254) (177) Beginning balance of benefit plan net gain (loss) (50) (74) Current period change in benefit plan net gain (loss) 17 23 Ending balance of benefit plan net gain (loss) (33) (50) Ending balance of accumulated other comprehensive income (loss) $ (1,996) $ 12 (Some amounts may not reconcile due to rounding.)

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2022
Employee Benefit Plans [Abstract]
Employee Benefit Plans	13. Defined Benefit Pension Plans. The employed prior to April a pension plan provided the Company’s non-qualified defined Although Company’s contributions Years Ended December 31, (Dollars in millions) 2022 2021 2020 Company contributions $ 6 $ 4 $ 7 The following table summarizes the Years Ended December 31, (Dollars in millions) 2022 2021 2020 Pension expense $ (2) $ 3 $ 8 The indicated: Years Ended December 31, (Dollars in millions) 2022 2021 Change in projected benefit obligation: Benefit obligation at beginning of year $ 403 $ 404 Service cost 9 11 Interest cost 10 8 Actuarial (gain)/loss (115) (9) Curtailment - - Benefits paid (15) (12) Projected benefit obligation at end of year 291 403 Change in plan assets: Fair value of plan assets at beginning of year 377 354 Actual return on plan assets (83) 31 Actual contributions during the year 6 4 Administrative expenses paid - - Benefits paid (15) (12) Fair value of plan assets at end of year 285 377 Funded status at end of year $ (6) $ (25) (Some amounts may not reconcile due Amounts recognized in the consolidated At December 31, (Dollars in millions) 2022 2021 Other assets (due beyond one year) $ 1 $ - Other liabilities (due within one year) (1) (1) Other liabilities (due beyond one year) (6) (24) Net amount recognized in the consolidated balance sheets $ (6) $ (25) (Some amounts may not reconcile due to rounding.) Amounts not yet reflected in (loss) for the periods indicated: At December 31, (Dollars in millions) 2022 2021 Accumulated income (loss) $ (56) $ (68) Accumulated other comprehensive income (loss) $ (56) $ (68) (Some amounts may not reconcile due to rounding.) Other changes in other comprehensive income (loss) Years Ended December 31, (Dollars in millions) 2022 2021 Other comprehensive income (loss) at December 31, prior year $ (68) $ (92) Net gain (loss) arising during period 7 15 Recognition of amortizations in net periodic benefit cost: Actuarial loss 4 9 Curtailment loss recognized - - Other comprehensive income (loss) at December 31, current year $ (56) $ (68) (Some amounts may not reconcile due to rounding.) Net periodic benefit cost for U.S. Years Ended December 31, (Dollars in millions) 2022 2021 2020 Service cost $ 9 $ 11 $ 10 Interest cost 10 8 10 Expected return on assets (25) (24) (21) Amortization of actuarial loss from earlier periods 4 8 9 Settlement 1 - 1 Net periodic benefit cost $ (2) $ 3 $ 8 Other changes recognized in other comprehensive income (loss): Other comprehensive income (loss) attributable to change from prior year (12) (24) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (14) $ (21) (Some amounts may not reconcile due to rounding.) The weighted 2.86 %, 2.55 % and 3.28 %, respectively. benefit cost for 4.00 %. 2021 and 2020 was 6.75 %, 7.00 % and 7.00 % respectively. The obligation for 2022, 2021 and 2020 were 5.25 %, 2.86 % and 2.55 %, respectively. The following table summarizes the At December 31, (Dollars in millions) 2022 2021 Qualified Plan $ 258 $ 339 Non-qualified Plan 6 12 Total $ 264 $ 352 (Some amounts may not reconcile due to rounding.) The following indicated: At December 31, (Dollars in millions) 2022 2021 Qualified Plan Projected benefit obligation $ 284 $ 390 Fair value of plan assets 285 377 Non-qualified Plan Projected benefit obligation $ 6 $ 12 Fair value of plan assets - - The periods indicated: At December 31, (Dollars in millions) 2022 2021 Qualified Plan Accumulated benefit obligation $ - $ - Fair value of plan assets - - Non-qualified Plan Accumulated benefit obligation $ 6 $ 12 Fair value of plan assets - - The following table displays (Dollars in millions) 2023 $ 13 2024 14 2025 14 2026 15 2027 17 Next 5 years 100 Plan assets 74 %, 24 %, 1 % and 1 % of the of qualified funds. 70 % equities and 30 % bonds. The following periods indicated: Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2022 (Level 1) (Level 2) (Level 3) Assets: Short-term investments, which approximates fair value (a) $ 4 $ 4 $ - $ - Mutual funds, fair value Fixed income (b) 68 68 - - Equities (c) 211 211 - - Total $ 283 $ 283 $ - $ - (Some amounts may not reconcile due to rounding.) This category includes high quality, short-term (b) This category includes fixed income funds, which invest in 70 % in U.S. securities and 30 % in international securities. (c) This category includes funds, which invest in small, mid and multi-cap equity securities common stock characteristics, such as rights and warrants, with 50 % in U.S. equities and 50 % in international equities. Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2021 (Level 1) (Level 2) (Level 3) Assets: Short-term investments, which approximates fair value (a) $ 3 $ 3 $ - $ - Mutual funds, fair value Fixed income (b) 85 85 - - Equities (c) 287 287 - - Total $ 375 $ 375 $ - $ - (Some amounts may not reconcile due to rounding.) This category includes high quality, short-term (b) This category includes fixed income funds, which invest in 70 % in U.S. securities and 30 % in international securities. (c) This category includes funds, which invest in small, mid and multi-cap equity securities common stock characteristics, such as rights and warrants, with 50 % in U.S. equities and 50 % in international equities. In addition, $ 1.5 2.6 at assets are valued using the NAV No 2021. Defined Contribution Plans. The “Non-Qualified Savings up 3 % employee. benefits effective 3 % and 8 % of 100 % 18 15 million and $ 14 In employees. location. year, 4.3 % to 39.5 %. contributions incurred expenses 4 3 3 31, 2022, 2021 and 2020, respectively. Post-Retirement Plan. The Company healthcare coverage. retire accrues the rate 7.00 % in 4.75 % in Company 1 1 1 2021 and 2020, respectively. The following table summarizes the At December 31, (Dollars in millions) 2022 2021 Change in projected benefit obligation: Benefit obligation at beginning of year $ 31 $ 35 Service cost 1 1 Interest cost 1 1 Amendments - - Actuarial (gain)/loss (10) (6) Benefits paid - - Benefit obligation at end of year 21 31 Change in plan assets: Fair value of plan assets at beginning of year - - Employer contributions - - Benefits paid - - Fair value of plan assets at end of year - - Funded status at end of year $ (21) $ (31) Amounts recognized in the consolidated At December 31, (Dollars in millions) 2022 2021 Other liabilities (due within one year) $ (1) $ (1) Other liabilities (due beyond one year) (21) (30) Net amount recognized in the consolidated balance sheets $ (21) $ (31) (Some amounts may not reconcile due to rounding.) Amounts not yet reflected in (loss) for the periods indicated: At December 31, (Dollars in millions) 2022 2021 Accumulated income (loss) $ 13 $ 2 Accumulated prior service credit (cost) 1 2 Accumulated other comprehensive income (loss) $ 14 $ 4 Other changes in other comprehensive income (loss) Years Ended December 31, (Dollars in millions) 2022 2021 Other comprehensive income (loss) at December 31, prior year $ 4 $ (2) Net gain (loss) arising during period 10 6 Prior Service credit (cost) arising during period - - Recognition of amortizations in net periodic benefit cost: Actuarial loss (gain) - - Prior service cost - (1) Other comprehensive income (loss) at December 31, current year $ 14 $ 4 Net periodic benefit cost included the following Years Ended December 31, (Dollars in millions) 2022 2021 2020 Service cost $ 1 $ 1 $ 1 Interest cost 1 1 1 Prior service credit recognition - (1) (1) Net gain recognition - - - Net periodic cost $ 1 $ 1 $ 1 Other changes recognized in other comprehensive income (loss): Other comprehensive gain (loss) attributable to change from prior year (10) (5) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (9) $ (4) (Some amounts may not reconcile due to rounding.) The weighted 2.86 %, 2.55 % and 3.28 %, respectively. The obligation at year end 2022, 2021 and 2020 were 5.25 %, 2.86 % and 2.55 %, respectively. The following table displays (Dollars in millions) 2023 $ 1 2024 1 2025 1 2026 1 2027 1 Next 5 years 7

Dividend Restrictions And Statu

Dividend Restrictions And Statutory Financial Information	12 Months Ended
Dividend Restrictions And Statutory Financial Information	Dec. 31, 2022
Dividend Restrictions And Statutory Financial Information [Abstract]
Dividend Restrictions And Statutory Financial Information	14. Group dividends that restrictions are based upon statut primary subsidiary, Requirement the (“NAIC”). surplus. Dividend Restrictions. Under Bermuda realizable capital operating expenses is dependent Under Bermuda law, its minimum declare or pay a the long term business by at least the $ 0.3 Prior approval 25 % of their end total statutory capital Bermuda Re Bermuda surplus 2.8 3.1 statutory 603 681 223 December 31, 2022, 2021 and 2020, respectively. Delaware law and is domiciled in the state shall Delaware proposed twelve months , exceeds the greater 10 % of statutory surplus reported unassigned 555 dividends in 2023 without the need for prior regulatory Everest permitted set forth Re was 5.6 5.8 Everest 294 336 595 2020. There transfer Delaware, where subsidiaries can pay dividends or make Capital Restrictions. In insurer’s BSCR model. 120 % of enhanced capital requirement. In control 200 % or level capital, no action is required by The regulatory targeted Bermuda Re (1) Everest Re (2) At December 31, At December 31, (Dollars in millions) 2022 (3) 2021 2022 2021 Regulatory targeted capital $ - $ 2,169 $ 3,353 $ 2,960 Actual capital $ 2,759 $ 3,184 $ 5,553 $ 5,717 Regulatory targeted capital represents (2) Regulatory targeted capital represents 200 % of the RBC authorized control level calculation for the applicable (3) The 2022 BSCR calculation is not yet due to be completed; however, level.

Commitments And Contingencies

Commitments And Contingencies	12 Months Ended
Commitments And Contingencies	Dec. 31, 2022
Commitments And Contingencies [Abstract]
Commitments And Contingencies	15. In informal obligations rights under an agreement or to others resolved through all such matters, considers expenses. Aside not a party to any other material litigation The Prudential”) annuity obligations Prudential annuity contract. The contingently liable for the periods At December 31, (Dollars in thousands) 2022 2021 The Prudential $ 137 $ 138 Unaffiliated life insurance company 34 35

Share-Based Compensation Plans

Share-Based Compensation Plans	12 Months Ended
Share-Based Compensation Plans	Dec. 31, 2022
Share-Based Compensation Plans [Abstract]
Share-Based Compensation Plans	16. The Option Compensation Plan (“2003 Director Plan”). The 1,400,000 shares share 31, 2022, there were 996,076 December awards had been 37,439 been Company. 34,957 Director 500,000 share 299,461 Options 20 % per five years under the 2003 33 % per year three years , unless an is provided grant and expire ten years Performance 100 % after three years . Performance 0 1.75 awarded be based three year peer companies. on equity for each of the separate operating For 2009 consolidated 45 43 39 million benefit recorded in compensation was 4 8 7 respectively. For the year 203,598 February 301.535 , $ 287.9425 , $ 280.98 , $ 283.7225 323.085 18,340 units 301.5350 No granted value per option was calculated on the The dividends, charged addition, the on those awards payment 0.6 million, $ 0.6 0.6 on restricted shares. A summary 2021 and 2020, and changes during the year then ended is presented Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2022 49,028 $ 88.52 Granted - - Exercised 49,028 88.52 Forfeited/Cancelled/Expired – - Outstanding at December 31, 2022 – - $ - . Exercisable at December 31, 2022 – - $ - Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in millions; Shares in whole amounts) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2021 116,871 $ 87.87 Granted - - Exercised 67,843 87.39 Forfeited/Cancelled/Expired - - Outstanding at December 31, 2021 49,028 88.52 0.2 $ 9 . Exercisable at December 31, 2021 49,028 88.52 0.2 $ 9 Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in millions; Shares in whole amounts) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2020 170,704 $ 87.18 Granted - - Exercised 53,833 85.69 Forfeited/Cancelled/Expired - - Outstanding at December 31, 2020 116,871 87.87 0.7 $ 17 . Exercisable at December 31, 2020 116,871 87.87 0.7 $ 17 There have no outstanding. years ended 10 11 10 cash received from 4 million, $ 6 5 ended December 31, 2022, 2021 and 2020 were $ 2 3 2 The indicated: Years Ended December 31, 2022 2021 2020 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Restricted (non-vested) Shares Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 496,094 $ 247.76 483,427 $ 246.60 495,137 $ 228.02 Granted 203,598 300.38 213,901 243.51 200,929 269.86 Vested 162,579 246.41 158,735 238.67 175,413 220.88 Forfeited 57,483 262.28 42,499 247.02 37,226 246.20 Outstanding at December 31, 479,630 268.82 496,094 247.76 483,427 246.60 As of December 97 share-based 3.3 $ 40 38 39 years ended December 31, 2022, 2021 and 2020 were 9 8 9 In 774 common shares 506 593 employee directors 0.2 million, $ 0.1 0.1 The Company 69,833 , 79,308 66,289 21 18 18 million and/or the exercise cost The changes for the period indicated: Years Ended December 31, 2022 2021 2020 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Performance Share Unit Awards Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 50,495 $ - 38,891 $ - 34,850 $ - Granted 18,340 301.54 22,205 242.24 16,120 277.15 Increase/(Decrease) on vesting units due to performance 3,028 - (800) - (2,227) - Vested 15,919 274.37 9,801 242.24 6,157 277.15 Forfeited 1,083 - - - 3,695 - Outstanding at December 31, 54,861 - 50,495 - 38,891 - The Company 6,175 , 3,104 2,587 1.7 0.8 0.7 million in performance shares units settlements

Segment Reporting

Segment Reporting	12 Months Ended
Segment Reporting	Dec. 31, 2022
Segment Reporting [Abstract]
Segment Reporting	17. The Reinsurance on both Business is the United and Singapore Ireland, and branches located These segments are management, Management upon their underwriting results. Underwriting commission and brokerage results using respectively, earned. The Company does not data. The following tables present the underwriting Year Ended December 31, 2022 (Dollars in millions) Reinsurance Insurance Total Gross written premiums $ 9,316 $ 4,636 $ 13,952 Net written premiums 8,983 3,361 12,344 Premiums earned $ 8,663 $ 3,124 $ 11,787 Incurred losses and LAE 5,997 2,103 8,100 Commission and brokerage 2,134 394 2,528 Other underwriting expenses 218 463 682 Underwriting gain (loss) $ 313 $ 164 $ 477 Net investment income 830 Net realized capital gains (losses) (455) Corporate expenses (61) Interest, fee and bond issue cost amortization expense (101) Other income (expense) (102) Income (loss) before taxes $ 588 Year Ended December 31, 2021 (Dollars in millions) Reinsurance Insurance Total Gross written premiums $ 9,067 $ 3,982 $ 13,050 Net written premiums 8,536 2,910 11,446 Premiums earned $ 7,757 $ 2,649 $ 10,406 Incurred losses and LAE 5,556 1,835 7,391 Commission and brokerage 1,854 354 2,209 Other underwriting expenses 199 383 583 Underwriting gain (loss) $ 147 $ 76 $ 224 Net investment income 1,165 Net realized capital gains (losses) 258 Corporate expenses (68) Interest, fee and bond issue cost amortization expense (70) Other income (expense) 37 Income (loss) before taxes $ 1,546 Year Ended December 31, 2020 (Dollars in millions) Reinsurance Insurance Total Gross written premiums $ 7,282 $ 3,201 $ 10,482 Net written premiums 6,768 2,349 9,117 Premiums earned $ 6,466 $ 2,215 $ 8,682 Incurred losses and LAE 4,933 1,617 6,551 Commission and brokerage 1,552 321 1,873 Other underwriting expenses 176 336 511 Underwriting gain (loss) $ (195) $ (58) $ (254) Net investment income 642 Net realized capital gains (losses) 268 Corporate expenses (41) Interest, fee and bond issue cost amortization expense (36) Other income (expense) 6 Income (loss) before taxes $ 585 The assets the Company’s other than the U.S., in which the Company writes business, Year Ended December 31, (Dollars in millions) 2022 2021 2020 United Kingdom gross written premium $ 1,217 $ 1,246 $ 1,116 Approximately 20.0 %, 20.5 % 20.1 % respectively,

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	18. The earthquake occurred Company is unable to losses

Schedule I - Summary Of Investm

Schedule I - Summary Of Investments - Other Than Investments In Related Parties	12 Months Ended
	Dec. 31, 2022
Schedule I - Summary Of Investments - Other Than Investments In Related Parties [Abstract]
Schedule I - Summary Of Investments - Other Than Investments In Related Parties	SCHEDULE I — SUMMARY OF INVESTMENTS — OTHER THAN INVESTMENTS IN RELATED December 31, 2022 Column A Column B Column C Column D Amount Shown in Market Balance (Dollars in millions) Cost Value Sheet Fixed maturities - available for sale Bonds: U.S. government and government agencies $ 1,334 $ 1,257 $ 1,257 State, municipalities and political subdivisions 444 413 413 Foreign government securities 1,586 1,415 1,415 Foreign corporate securities 5,143 4,596 4,596 Public utilities 218 203 203 All other corporate bonds 10,688 10,013 10,013 Mortgage - backed securities: Commercial 1,023 919 919 Agency residential 3,382 3,099 3,099 Non-agency residential 5 4 4 Redeemable preferred stock 368 316 316 Total fixed maturities-available for sale 24,191 22,236 22,236 Fixed maturities - held to maturity Bonds: Foreign corporate securities 28 28 27 All other corporate bonds 813 786 806 Mortgage - backed securities: Commercial 7 7 7 Total fixed maturities-held to maturity 848 821 839 Equity securities - at fair value (1) 252 281 281 Short-term investments 1,032 1,032 1,032 Other invested assets 4,085 4,085 4,085 Cash 1,398 1,398 1,398 Total investments and cash $ 31,807 $ 29,853 $ 29,872 (Some amounts may not reconcile due to rounding.) (1)

Schedule II - Condensed Financi

Schedule II - Condensed Financial Information Of The Registrant	12 Months Ended
	Dec. 31, 2022
Schedule II - Condensed Financial Information Of The Registrant [Abstract]
Schedule II - Condensed Financial Information Of The Registrant	SCHEDULE II — CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT CONDENSED BALANCE SHEETS December 31, (Dollars and share amounts in millions, except 2022 2021 ASSETS: Fixed maturities - available for sale $ - $ - (amortized cost: 2022, $ 0 ; 2021, $ 0 ) Other invested assets (cost: 2022, $ 0 ; 2021, $ 212 ) - 212 Cash 22 3 Investment in subsidiaries, at equity in the underlying net assets 11,116 10,353 Accrued investment income - - Receivable from subsidiaries 11 10 Other assets 43 50 TOTAL ASSETS $ 11,192 $ 10,628 LIABILITIES: Long term notes payable, affiliated $ 2,738 $ 500 Due to subsidiaries 4 2 Other liabilities 9 (13) Total liabilities 2,751 489 SHAREHOLDERS' EQUITY: Preferred shares, par value: $ 0.01 ; 50.0 no - - Common shares, par value: $ 0.01 ; 200.0 (2022) 69.9 69.8 1 1 Additional paid-in capital 2,302 2,274 Accumulated other comprehensive income (loss), net of deferred income tax expense (benefit) of ($ 250 ) at 2022 and $ 27 (1,996) 12 Treasury shares, at cost; 30.8 30.5 (3,908) (3,847) Retained earnings 12,042 11,700 Total shareholders' equity 8,441 10,139 TOTAL $ 11,192 $ 10,628 (Some amounts may not reconcile due to rounding.) See notes to consolidated financial statements. SCHEDULE II — CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT CONDENSED STATEMENTS Years Ended December 31, 2022 2021 2020 (Dollars in thousands) REVENUES: Net investment income $ - $ - $ 1 Other income (expense) - - 6 Net income (loss) of subsidiaries 648 1,416 536 Total revenues 648 1,416 543 EXPENSES: Interest expense - affiliated 13 6 5 Other expenses 38 31 24 Total expenses 51 37 29 INCOME (LOSS) BEFORE TAXES 597 1,379 514 NET INCOME (LOSS) $ 597 $ 1,379 $ 514 Other comprehensive income (loss), net of tax: Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period (2,037) (488) 423 Reclassification adjustment for realized losses (gains) included in net income (loss) 89 4 (3) Total URA(D) on securities arising during the period (1,948) (485) 420 Foreign currency translation adjustments (77) (62) 86 Benefit plan actuarial net gain (loss) for the period 15 17 (6) Reclassification adjustment for amortization of net (gain) loss included in net income (loss) 2 6 6 Total benefit plan net gain (loss) for the period 17 23 1 Total other comprehensive income (loss), net of tax (2,008) (523) 507 COMPREHENSIVE INCOME (LOSS) $ (1,411) $ 856 $ 1,021 (Some amounts may not reconcile due to rounding.) See notes to consolidated financial statements. SCHEDULE II — CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT CONDENSED STATEMENTS Years Ended December 31, (Dollars in millions, except share amounts) 2022 2021 2020 CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 597 $ 1,379 $ 514 Adjustments to reconcile net income to net cash provided by operating activities: Equity in retained (earnings) deficit of subsidiaries (648) (1,416) (536) Cash dividends received from subsidiaries 476 320 650 Change in other assets and liabilities, net 28 3 (21) Increase (decrease) in due to/from affiliates 2 8 (9) Amortization of bond premium (accrual of bond discount) - - - Realized capital losses (gains) - - - Non-cash compensation expense 2 2 3 Net cash provided by (used in) operating activities 457 296 601 CASH FLOWS FROM INVESTING ACTIVITIES: Additional investment in subsidiaries (824) (120) (138) Proceeds from fixed maturities matured/called - available for sale, at market value - - 1 Proceeds from fixed maturities sold - available for sale, at market value - - 200 Distribution from other invested assets 237 607 560 Cost of fixed maturities acquired - available for sale, at market value - - - Cost of other invested assets acquired (26) (535) (801) Net change in short-term investments - - - Net cash provided by (used in) investing activities (613) (48) (178) CASH FLOWS FROM FINANCING ACTIVITIES: Common shares issued during the period, net 26 27 23 Purchase of treasury shares (61) (225) (200) Dividends paid to shareholders (255) (247) (249) Proceeds from issuance (cost of repayment) of long term notes payable - affiliated 465 200 - Net cash provided by (used in) financing activities 175 (245) (426) EFFECT OF EXCHANGE RATE CHANGES ON CASH - - - Net increase (decrease) in cash 19 2 (3) Cash, beginning of period 3 1 3 Cash, end of period $ 22 $ 3 $ 1 Non-Cash Transactions: Dividend of 4,297,463 $ 1,405 $ - $ - received by Group from Everest Preferred International Holdings (“Preferred Holdings”), a direct subsidiary Issuance of $ 1,773 Holdings in exchange for 5,422,508 received by Group from Preferred Holdings 1,773 - - Capital contribution of 9,719,971 Group to Everest Re Advisors, Ltd. 3,178 - - (Some amounts may not reconcile due to rounding.) See notes to consolidated financial statements. SCHEDULE II – CONDENSED FINANCIAL INFORMATION NOTES TO CONDENSED 1.) The financial statements and related 2.) Everest 300 Company, 1.69 % and was Group, Ltd. 3.) Everest 200 Company, 1.00 % and presented as Ltd. 4.) Everest 215 Holdings, Inc., an affiliated company, 3.11 % and is scheduled to Term Note 5.) Everest 125 Holdings, Inc., an 4.34 % and is scheduled to mature in June Long-Term Note 6.) Everest 125 Reinsurance, 4.34 % presented as Ltd. 7.) Everest 1.773 International Holdings, a rate of 4.34 % and is scheduled to presented as Ltd. 8.) Everest Re”), 65 million and $ 66 Assets. (0.9) (1.3) $(6.3) million for other income (expense).

Schedule III - Supplementary In

Schedule III - Supplementary Insurance Information	12 Months Ended
Schedule III - Supplementary Insurance Information	Dec. 31, 2022
Schedule III - Supplementary Insurance Information [Abstract]
Schedule III - Supplementary Insurance Information	SCHEDULE Column A Column B Column C Column D Column E Column F Column G Column H Column I Column J Reserve Incurred Segment for Losses Loss and Amortization Deferred and Loss Unearned Net Loss of Other Net Acquisition Adjustment Premium Premiums Investment Adjustment Acquisition Operating Written (Dollars in millions) Costs Expenses Reserves Earned Income Expenses Costs Expenses Premium As of and Year Ended December Reinsurance $ 710 $ 16,140 $ 2,894 $ 8,663 $ 590 $ 5,997 $ 2,134 $ 218 $ 8,983 Insurance 252 5,925 2,253 3,124 240 2,103 394 463 3,361 Total $ 962 $ 22,065 $ 5,147 $ 11,787 $ 830 $ 8,100 $ 2,528 $ 682 $ 12,344 As of and Year Ended December Reinsurance $ 654 $ 13,895 $ 2,723 $ 7,757 $ 823 $ 5,556 $ 1,854 $ 199 $ 8,536 Insurance 218 5,114 1,887 2,649 342 1,835 354 383 2,910 Total $ 872 $ 19,009 $ 4,610 $ 10,406 $ 1,165 $ 7,391 $ 2,209 $ 583 $ 11,446 As of and Year Ended December Reinsurance $ 448 $ 12,023 $ 1,995 $ 6,466 $ 458 $ 4,933 $ 1,552 $ 176 $ 6,768 Insurance 174 4,376 1,506 2,215 184 1,617 321 336 2,349 Total $ 622 $ 16,399 $ 3,501 $ 8,682 $ 642 $ 6,551 $ 1,873 $ 511 $ 9,117 (Some amounts may not reconcile due to rounding.)

Schedule IV - Reinsurance

Schedule IV - Reinsurance	12 Months Ended
Schedule IV - Reinsurance	Dec. 31, 2022
Schedule IV - Reinsurance [Abstract]
Schedule IV - Reinsurance	SCHEDULE IV — REINSURANCE Column A Column B Column C Column D Column E Column F Ceded to Assumed Gross Other Net Assumed (Dollars in millions) Amount Amount to Net December 31, 2022 Total property and $ 4,218 $ 1,513 $ 9,082 $ 11,787 $ 77.1% December 31, 2021 Total property and $ 3,589 $ 1,498 $ 8,315 $ 10,406 $ 79.9% December 31, 2020 Total property and $ 3,028 $ 1,401 $ 7,055 $ 8,682 $ 81.3%

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policy)	12 Months Ended
Summary Of Significant Accounting Policies (Policy)	Dec. 31, 2022
Summary Of Significant Accounting Policies [Abstract]
Business And Basis Of Presentation	A. Everest and Group and its subsidiaries. The principles following domestic (“Everest International Service Reinsurance Compañia (“Holdings (“Everest Limited (Ireland) Insurance”), Reinsurance (Bermuda) Leisure and Specialty Company (“Everest Indemnity Everest Security”). dollars. The Company in Company is considered to be the primary beneficiary. as entity. The preparation assumptions liabilities) at the date of the financial reporting period. Certain presentation.
Investments and Cash	B. Fixed result other maturity, review. factors. well as interest related accumulated other comprehensive likely than the operations the Company not have to the statements related impairment is analysis is the quantitative assessment difference the credit allowance account through comprehensive income (loss). Fixed both the positive the determined in the evaluates characteristics considerations, incorporation current expected credit losses. The Company interest that has not been accrued, it is recorded as income The Company’s with enhancements or relevant information provided Retrospective Company’s reviewed the new yield to prepayment calculation of projected prepayments For income on all fixed maturities income in the consolidated statements Short-term stated at cost, which appro Realized publicly securities flow characteristics committees qualified Company valuation illiquid, the determine fair value. Other investments. recorded surrender value and changes in the policy cash Cash represents withdrawal or usage. Amounts C. The credit losses. and establishes an allowance for estimated Premiums premiums, are primarily due these adjusted for current economic A portion of the rated pay the for Retrospectively-rated incurred. insurance could be adversely deductible Company allowance within receivable exposed assigned Credit ratings and historical corporate
Allowance for Premium Receivable and Reinsurance Recoverables	C. The credit losses. and establishes an allowance for estimated Premiums premiums, are primarily due these adjusted for current economic A portion of the rated pay the for Retrospectively-rated incurred. insurance could be adversely deductible Company allowance within receivable exposed assigned Credit ratings and historical corporate ratings required considers the current economic The Company and records Company’s consolidate The cessions allowance balances. recoverable or charge Due to the inherent due, it is possible that future adjustments be required, cash flows in a particular quarter or annual period. The allowance factors recoverable net in collateral factors are as economic outcomes. the current economic environment The adjustment expenses in the Company’s Write-offs of is deemed uncollectible.
Deferred Acquisition Costs	D. Acquisition costs, fees Company’s reinsurance premiums business investment income.
Reserve For Losses And Loss Adjustment Expenses	E. The reserve received from based on past asbestos which liabilities reviewed made. liability. presented net of reinsurance. Accruals percentage to arrangements are are estimated based on expected F. Liabilities policy particular period may fluctuate from G. Written contracts. reinsurance estimated premium catastrophe coverage reflects been reported to the Company, H. Prepaid reinsurance 10 % December 31, credit, thereby limiting the credit risk to I. Holdings subsidiaries and branches of subsidiaries Holdings’ income reporting and income tax accounting rules. As disproportionate income tax J. The Company base transactional activity and liabilities the consolidated for income (loss) and accumulated in shareholders’ The business the end of period for the balance sheets and the average
Future Policy Benefit Reserve	F. Liabilities policy particular period may fluctuate from
Premium Revenues	G. Written contracts. reinsurance estimated premium catastrophe coverage reflects been reported to the Company,
Prepaid Reinsurance Premiums	H. Prepaid reinsurance 10 % December 31, credit, thereby limiting the credit risk to
Income Taxes	I. Holdings subsidiaries and branches of subsidiaries Holdings’ income reporting and income tax accounting rules. As disproportionate income tax
Foreign Currency	J. The Company base transactional activity and liabilities the consolidated for income (loss) and accumulated in shareholders’ The business the end of period for the balance sheets and the average income statements. deferred income taxes,
Earnings Per Common Share	K. Basic shares outstanding. under various would participate in the earnings of the entity. Net income basic and dilutive shares outstanding. Years Ended December 31, (Amounts in millions, except per share amounts) 2022 2021 2020 Net income (loss) per share: Numerator Net income (loss) $ 597 $ 1,379 $ 514 Less: (255) (247) (249) Undistributed earnings 342 1,132 265 Percentage allocated to common shareholders (1) 98.7 % 98.7 % 98.7 % 337 1,117 262 Add: 252 244 246 Numerator for basic and diluted earnings per common share $ 589 $ 1,361 $ 508 Denominator Denominator for basic earnings per weighted-average common shares 39 39 40 Effect of dilutive securities: Options - - - Denominator for diluted earnings per adjusted weighted-average common shares 39 39 40 Per common share net income (loss) Basic $ 15.19 $ 34.66 $ 12.81 Diluted $ 15.19 $ 34.62 $ 12.78 (1) Basic weighted-average common shares outstanding 39 39 40 Basic weighted-average common shares outstanding 39 40 40 Percentage allocated to common shareholders 98.7 % 98.7 % 98.7 % (Some amounts may not reconcile due to rounding.) There were no Options granted no
Segmentation	L. The Company, two
Share-Based Compensation	M. Share-based compensation the grant deferred until the time the award
Application Of Recently Issued Accounting Guidance	N. The Company assessed Board on if any, accounting standards to Group.

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
Summary Of Significant Accounting Policies (Tables)	Dec. 31, 2022
Summary Of Significant Accounting Policies [Abstract]
Net Income (Loss) Per Common Share	Years Ended December 31, (Amounts in millions, except per share amounts) 2022 2021 2020 Net income (loss) per share: Numerator Net income (loss) $ 597 $ 1,379 $ 514 Less: (255) (247) (249) Undistributed earnings 342 1,132 265 Percentage allocated to common shareholders (1) 98.7 % 98.7 % 98.7 % 337 1,117 262 Add: 252 244 246 Numerator for basic and diluted earnings per common share $ 589 $ 1,361 $ 508 Denominator Denominator for basic earnings per weighted-average common shares 39 39 40 Effect of dilutive securities: Options - - - Denominator for diluted earnings per adjusted weighted-average common shares 39 39 40 Per common share net income (loss) Basic $ 15.19 $ 34.66 $ 12.81 Diluted $ 15.19 $ 34.62 $ 12.78 (1) Basic weighted-average common shares outstanding 39 39 40 Basic weighted-average common shares outstanding 39 40 40 Percentage allocated to common shareholders 98.7 % 98.7 % 98.7 % (Some amounts may not reconcile due to rounding.)

Investments (Tables)

Investments (Tables)	12 Months Ended
Investments (Tables)	Dec. 31, 2022
Investments [Abstract]
Summary Of Amortized Cost, Allowance For Credit Losses, Gross Unrealized Appreciation/(Depreciation) And Fair Value Of Fixed Maturity Securities	At December 31, 2022 Amortized Allowance for Unrealized Unrealized Fair (Dollars in millions) Cost Credit Losses Appreciation Depreciation Value Fixed maturity securities - available for sale: U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,334 $ - $ 6 $ (82) $ 1,257 Obligations of U.S. states and political subdivisions 444 - 2 (32) 413 Corporate securities 7,044 (45) 31 (561) 6,469 Asset-backed securities 4,229 - 5 (171) 4,063 Mortgage-backed securities Commercial 1,023 - - (105) 919 Agency residential 3,382 - 7 (290) 3,099 Non-agency residential 5 - - (1) 4 Foreign government securities 1,586 - 8 (179) 1,415 Foreign corporate securities 5,143 (10) 23 (562) 4,596 Total fixed maturity securities - available for sale $ 24,191 $ (54) $ 81 $ (1,982) $ 22,236 (Some amounts may not reconcile due to rounding.) At December 31, 2021 Amortized Allowance for Unrealized Unrealized Fair (Dollars in millions) Cost Credit Losses Appreciation Depreciation Value Fixed maturity securities - available for sale: U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,407 $ - $ 24 $ (10) $ 1,421 Obligations of U.S. states and political subdivisions 559 - 29 (1) 587 Corporate securities 7,444 (19) 195 (63) 7,557 Asset-backed securities 3,579 (8) 22 (12) 3,582 Mortgage-backed securities Commercial 1,032 - 38 (6) 1,064 Agency residential 2,361 - 33 (19) 2,375 Non-agency residential 7 - - - 7 Foreign government securities 1,424 - 42 (28) 1,438 Foreign corporate securities 4,251 (3) 95 (65) 4,279 Total fixed maturity securities - available for sale $ 22,064 $ (30) $ 478 $ (203) $ 22,308 (Some amounts may not reconcile due to rounding.) At December 31, 2022 Amortized Allowance for Unrealized Unrealized Fair (Dollars in millions) Cost Credit Losses Appreciation Depreciation Value Fixed maturity securities - held to maturity: Corporate securities $ 152 $ (2) $ - $ (6) $ 144 Asset-backed securities 661 (6) 2 (15) 642 Mortgage-backed securities - Commercial 7 - - - 7 Foreign corporate securities 28 (1) 2 - 28 Total fixed maturity securities - held to maturity $ 848 $ (9) $ 3 $ (22) $ 821 (Some amounts may not reconcile due
Summary Of Amortized Cost And Fair Value Of Fixed Maturity Securities, By Contractual Maturity	At December 31, 2022 At December 31, 2021 Amortized Fair Amortized Fair (Dollars in millions) Cost Value Cost Value Fixed maturity securities – available for sale: $ 1,331 $ 1,314 $ 1,399 $ 1,398 8,131 7,546 7,075 7,154 4,636 4,057 5,004 5,101 1,454 1,233 1,606 1,627 Asset-backed securities 4,229 4,063 3,579 3,582 Mortgage-backed securities: Commercial 1,023 919 1,032 1,064 Agency residential 3,382 3,099 2,361 2,375 Non-agency residential 5 4 7 7 Total fixed maturity securities -available for sale $ 24,191 $ 22,236 $ 22,064 $ 22,308 (Some amounts may not reconcile due to rounding.) At December 31, 2022 Amortized Fair (Dollars in millions) Cost Value Fixed maturity securities – held to maturity: $ 5 $ 5 63 61 43 41 68 65 Asset-backed securities 661 642 Mortgage-backed securities: Commercial 7 7 Total fixed maturity securities - held to maturity $ 848 $ 821 (Some amounts may not reconcile due
Summary Of Changes In Net Unrealized Appreciation (Depreciation) For The Company's Investments	Years Ended December 31, (Dollars in millions) 2022 2021 Increase (decrease) during the period between the fair value and cost of investments carried at fair value, and deferred taxes thereon: Fixed maturity securities and short-term investments $ (2,225) $ (542) Change in unrealized appreciation (depreciation), pre-tax (2,225) (542) Deferred tax benefit (expense) 277 58 Change in unrealized appreciation (depreciation), net of deferred taxes, included in shareholders’ equity $ (1,948) $ (485) (Some amounts may not reconcile due to rounding.)
Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Security Type	Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for U.S. Treasury securities and U.S. government agencies and corporations $ 668 $ (31) $ 487 $ (52) $ 1,155 $ (82) Obligations of U.S. states and 235 (23) 27 (9) 261 (32) Corporate securities 4,143 (326) 1,316 (234) 5,459 (561) Asset-backed securities 3,204 (142) 456 (29) 3,661 (171) Mortgage-backed securities Commercial 806 (90) 101 (15) 907 (105) Agency residential 1,905 (132) 870 (158) 2,776 (289) Non-agency residential 4 - 1 (1) 4 - Foreign government securities 985 (100) 321 (79) 1,306 (179) Foreign corporate securities 3,264 (372) 853 (189) 4,117 (561) Total $ 15,213 $ (1,217) $ 4,432 $ (764) $ 19,645 $ (1,982) Securities where an allowance for credit 2 - - - 2 - Total fixed $ 15,215 $ (1,217) $ 4,432 $ (764) $ 19,647 $ (1,982) (Some amounts may not reconcile due to rounding.) Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for U.S. Treasury securities and U.S. government agencies and corporations $ 504 $ (6) $ 92 $ (4) $ 596 $ (10) Obligations of U.S. states and 51 (1) 3 - 54 (1) Corporate securities 2,133 (38) 473 (24) 2,605 (63) Asset-backed securities 1,954 (11) 42 (1) 1,996 (12) Mortgage-backed securities Commercial 222 (3) 40 (3) 262 (6) Agency residential 1,101 (12) 280 (7) 1,381 (19) Non-agency residential 2 - - - 2 - Foreign government securities 392 (10) 101 (18) 493 (28) Foreign corporate securities 1,735 (46) 211 (18) 1,945 (65) Total fixed $ 8,094 $ (128) $ 1,241 $ (75) $ 9,335 $ (203) (Some amounts may not reconcile due to rounding.)
Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Contractual Maturity	Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for Due in one year or less $ 989 $ (19) $ 40 $ (7) $ 1,029 $ (26) Due in one year through five years 4,935 (383) 1,645 (209) 6,580 (592) Due in five years through ten years 2,698 (360) 911 (230) 3,609 (590) Due after ten years 672 (91) 408 (116) 1,080 (207) Asset-backed securities 3,204 (142) 456 (29) 3,661 (171) Mortgage-backed securities 2,715 (222) 972 (173) 3,687 (395) Total $ 15,213 $ (1,217) $ 4,432 $ (764) $ 19,645 $ (1,982) Securities where an allowance for credi 2 - - - 2 - Total fixed $ 15,215 $ (1,217) $ 4,432 $ (764) $ 19,647 $ (1,982) (Some amounts may not reconcile due to rounding.) Duration of Unrealized Loss at December Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in millions) Fair Value Depreciation Fair Value Depreciation Fair Value Depreciation Fixed maturity securities - available for Due in one year or less $ 130 $ (2) $ 137 $ (12) $ 267 $ (14) Due in one year through five years 2,165 (35) 446 (29) 2,612 (64) Due in five years through ten years 1,728 (47) 244 (22) 1,972 (69) Due after ten years 792 (16) 51 (3) 843 (19) Asset-backed securities 1,954 (11) 42 (1) 1,996 (12) Mortgage-backed securities 1,325 (15) 320 (10) 1,646 (25) Total fixed $ 8,094 $ (128) $ 1,241 $ (75) $ 9,335 $ (203) (Some amounts may not reconcile due to rounding.)
Summary Of Components Of Net Investment Income	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Fixed maturities $ 742 $ 561 $ 542 Equity securities 16 17 19 Short-term investments and cash 28 1 5 Other invested assets Limited partnerships 75 565 113 Other 29 63 2 Gross investment income before adjustments 890 1,208 681 Funds held interest income (expense) 2 12 13 Future policy benefit reserve income (expense) - (1) (1) Gross investment income 892 1,219 692 Investment expenses (62) (54) (50) Net investment income $ 830 $ 1,165 $ 642 (Some amounts may not reconcile due to rounding.)
Summary Of Components Of Net Realized Capital Gains (Losses)	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Fixed maturity securities: Allowance for credit losses $ (33) $ (28) $ (2) Net realized gains (losses) from dispositions (87) 17 (5) Gains (losses) from fair value adjustments - - 2 Equity securities: Net realized gains (losses) from dispositions 112 28 (9) Gains (losses) from fair value adjustments (460) 236 278 Other invested assets 13 6 2 Short-term investments gain (loss) - - 1 Total net realized gains (losses) on investments $ (455) $ 258 $ 268 (Some amounts may not reconcile due to rounding.) Roll Forward of Allowance for Credit Losses Twelve Months Ended December 31, 2022 Foreign Corporate Asset-Backed Corporate Securities Securities Securities Total (Dollars in millions) Beginning Balance $ (19) $ (8) $ (3) $ (30) Credit losses on securities where credit losses were not previously recorded (1) (13) (6) (17) (35) Increases in allowance on previously impaired securities (20) - (1) (21) Decreases in allowance on previously impaired securities - - - - Reduction in allowance due to disposals 6 8 10 23 Balance as of December 31 $ (46) $ (6) $ (11) $ (63) (Some amounts may not reconcile due to rounding.) (1) 2 6 1 corporate securities, respectively. Roll Forward of Allowance for Credit Losses Twelve Months Ended December 31, 2021 Foreign Corporate Asset-Backed Corporate Securities Securities Securities Total (Dollars in millions) Beginning Balance $ (1) $ - $ (1) $ (2) Credit losses on securities where credit losses were not previously recorded (21) (5) (2) (29) Increases in allowance on previously impaired securities (3) (3) - (5) Decreases in allowance on previously Reduction in allowance due to disposals 6 - - 6 Balance as of December 31 $ (19) $ (8) $ (3) $ (30) (Some amounts may not reconcile due to rounding.)
Summary Of Gross Gains (Losses) From Sales Of Fixed Maturity And Equity Securities	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Proceeds from sales of fixed maturity securities - available for sale $ 1,403 $ 1,916 $ 1,951 Gross gains from sales 40 72 80 Gross losses from sales (127) (55) (85) Proceeds from sales of equity securities $ 2,217 $ 990 $ 376 Gross gains from sales 165 42 37 Gross losses from sales (53) (15) (46)

Reserve For Losses, LAE And F_2

Reserve For Losses, LAE And Future Policy Benefit Reserve (Tables)	12 Months Ended
	Dec. 31, 2022
Reserve For Losses, LAE And Future Policy Benefit Reserve [Abstract]
Summary Of Activity In The Reserve For Losses And LAE	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Gross reserves beginning of period $ 19,009 $ 16,322 $ 13,531 (1,946) (1,844) (1,641) 17,063 14,478 11,891 Incurred related to: 8,102 7,400 6,149 (2) (9) 401 8,100 7,391 6,551 Paid related to: 1,220 2,491 2,046 3,740 2,226 2,078 4,960 4,717 4,124 Foreign exchange/translation adjustment (243) (89) 161 Net reserves end of period 19,960 17,063 14,478 2,105 1,946 1,844 $ 22,065 $ 19,009 $ 16,322 (Some amounts may not reconcile due
Ultimate Loss And ALAE And Paid Loss And ALAE, Net Of Reinsurance	Reinsurance – Casualty Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 710 $ 801 $ 788 $ 779 $ 748 $ 719 $ 699 $ 699 $ 694 $ 684 $ 11 N/A 2014 762 800 807 783 741 719 732 730 720 13 N/A 2015 777 818 814 811 795 832 832 829 47 N/A 2016 790 865 862 857 933 935 965 91 N/A 2017 870 830 837 918 926 982 132 N/A 2018 1,311 1,309 1,386 1,416 1,485 354 N/A 2019 1,683 1,748 1,751 1,775 727 N/A 2020 1,896 1,867 1,846 1,178 N/A 2021 2,454 2,449 1,829 N/A 2022 2,818 2,133 N/A $ 14,554 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 48 $ 121 $ 211 $ 310 $ 383 $ 489 $ 540 $ 565 $ 593 $ 603 2014 57 122 212 301 426 501 545 585 607 2015 57 157 263 408 497 565 611 647 2016 88 187 320 426 539 614 690 2017 80 185 316 455 575 677 2018 154 284 456 616 803 2019 208 338 511 718 2020 190 300 489 2021 214 318 2022 200 $ 5,754 All outstanding liabilities prior to 2013, net of reinsurance 916 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 9,715 (Some amounts may not reconcile due to rounding.) Reinsurance – Property Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 1,275 $ 930 $ 819 $ 763 $ 757 $ 753 $ 760 $ 758 $ 758 $ 757 $ 2 N/A 2014 1,343 1,181 1,030 937 933 937 930 930 928 3 N/A 2015 1,386 1,053 976 950 952 945 946 943 2 N/A 2016 1,695 1,518 1,554 1,548 1,526 1,527 1,523 10 N/A 2017 2,784 3,407 3,518 3,647 3,692 3,703 3 N/A 2018 2,611 2,486 2,488 2,426 2,379 24 N/A 2019 2,038 2,070 2,015 1,899 29 N/A 2020 2,408 2,481 2,425 240 N/A 2021 2,754 2,780 476 N/A 2022 3,257 1,898 N/A $ 20,594 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 375 $ 510 $ 638 $ 693 $ 713 $ 723 $ 732 $ 733 $ 733 $ 735 2014 366 641 769 842 874 884 891 892 893 2015 377 607 759 842 869 891 900 905 2016 469 961 1,249 1,367 1,421 1,441 1,454 2017 819 2,180 2,744 3,130 3,332 3,426 2018 545 1,525 1,878 2,065 2,136 2019 730 1,185 1,505 1,667 2020 584 1,321 1,733 2021 684 1,534 2022 652 $ 15,134 All outstanding liabilities prior to 2013, net of reinsurance 103 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 5,562 (Some amounts may not reconcile due to rounding.) Insurance – Casualty Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 393 $ 393 $ 393 $ 393 $ 351 $ 344 $ 351 $ 350 $ 350 $ 347 $ 25 $ 22,031 2014 431 457 454 460 396 397 398 397 398 32 26,449 2015 519 527 535 541 467 471 471 477 40 29,020 2016 552 550 579 612 549 538 540 53 34,164 2017 610 600 620 652 628 629 85 38,344 2018 701 705 742 755 769 154 39,029 2019 848 844 876 885 204 42,006 2020 993 1,049 1,043 416 39,545 2021 1,189 1,246 732 44,274 2022 1,367 865 37,739 $ 7,703 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 33 $ 117 $ 176 $ 225 $ 260 $ 286 $ 304 $ 311 $ 317 $ 321 2014 41 125 202 257 297 325 339 350 360 2015 44 135 219 292 353 382 413 435 2016 55 164 268 341 400 443 481 2017 54 172 280 378 453 529 2018 63 207 317 443 594 2019 72 234 397 551 2020 66 236 388 2021 109 261 2022 85 $ 4,003 All outstanding liabilities prior to 2013, net of reinsurance 127 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 3,828 (Some amounts may not reconcile due to rounding.) Insurance – Property Business At December 31, 2022 Total of IBNR Liabilities Ultimate Incurred Loss and Allocated Loss Adjustment Expenses, Net of reinsurance Plus Expected Cumulative Years Ended December 31, Development Number of 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 on Reported Reported Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) Claims Claims (Dollars in millions) 2013 $ 112 $ 98 $ 91 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ - N/A 2014 132 123 120 119 119 119 119 119 120 1 N/A 2015 173 153 144 146 144 146 146 150 1 N/A 2016 288 274 279 289 292 294 294 - N/A 2017 494 499 492 495 489 504 - N/A 2018 405 400 394 407 422 1 N/A 2019 347 347 351 363 1 N/A 2020 599 507 498 27 N/A 2021 646 579 66 N/A 2022 767 273 N/A $ 3,789 (Some amounts may not reconcile due to rounding.) Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in millions) 2013 $ 69 $ 93 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 $ 92 2014 82 116 118 118 118 119 119 119 119 2015 102 141 142 145 146 146 147 147 2016 162 249 271 287 290 293 293 2017 179 423 457 479 496 499 2018 245 357 376 404 418 2019 227 315 339 357 2020 293 416 453 2021 328 473 2022 372 $ 3,223 All outstanding liabilities prior to 2013, net of reinsurance - Liabilities for claims and claim adjustment expenses, net of reinsurance 566 (Some amounts may not reconcile due to rounding.)
Average Annual Percentage Payout Incurred Claims By Age, Net Of Reinsurance	Reinsurance – Casualty Business Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Casualty 8.9 % 7.8 % 11.7 % 12.7 % 12.5 % 10.2 % 6.8 % 4.5 % 3.6 % 1.5 % Reinsurance – Property Business Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Property 27.2 % 31.8 % 16.1 % 8.8 % 4.0 % 2.0 % 0.9 % 0.3 % 0.1 % 0.1 % Insurance – Casualty Business Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Casualty 8.1 % 17.6 % 16.8 % 15.5 % 13.4 % 8.4 % 5.7 % 3.3 % 2.1 % 1.3 % Insurance – Property Business Average Annual Percentage Years 1 2 3 4 5 6 7 8 9 10 Property 54.3 % 31.5 % 5.7 % 4.5 % 2.3 % 1.0 % 0.6 % 0.1 % 0.1 % - %
Reconciliation of the Net Incurred and Paid Claims Development	December 31, 2022 (Dollars in thousands) Net outstanding liabilities Reinsurance Casualty $ 9,715 Reinsurance Property 5,562 Insurance Casualty 3,828 Insurance Property 566 Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 19,671 Reinsurance recoverable on unpaid claims Reinsurance Casualty 150 Reinsurance Property 576 Insurance Casualty 1,220 Insurance Property 160 Total reinsurance recoverable 2,105 Insurance lines other than short-duration - Unallocated claims adjustment expenses 244 Other 45 289 Total gross liability for unpaid claims and claim adjustment expense $ 22,065 (Some amounts may not reconcile due to rounding.)
Summary Of Incurred Losses With Respect To A&E Reserve On Both Gross And Net Of Reinsurance Basis	At December 31, (Dollars in millions) 2022 2021 2020 Gross basis: Beginning of period reserves $ 175 $ 219 $ 258 Incurred losses 144 11 2 Paid losses (42) (55) (40) End of period reserves $ 278 $ 175 $ 219 Net basis: Beginning of period reserves $ 156 $ 198 $ 229 Incurred losses 138 - (1) Paid losses (37) (42) (30) End of period reserves $ 257 $ 156 $ 198 (Some amounts may not reconcile due to rounding.)
Summary Of Activity In The Reserve For Future Policy Benefits	At December 31, (Dollars in thousands) 2022 2021 2020 Balance at beginning of year $ 36 $ 38 $ 43 Liabilities assumed - - - Adjustments to reserves (3) 1 (1) Benefits paid in the current year (4) (3) (4) Balance at end of year $ 29 $ 36 $ 38 (Some amounts may not reconcile due to rounding.)

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
Fair Value (Tables)	Dec. 31, 2022
Fair Value [Abstract]
Fair Value Measurement Levels For All Assets And Liabilities	Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2022 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,257 $ - $ 1,257 $ - Obligations of U.S. States and political subdivisions 413 - 413 - Corporate securities 6,469 - 5,754 715 Asset-backed securities 4,063 - 3,069 994 Mortgage-backed securities Commercial 919 - 919 - Agency residential 3,099 - 3,099 - Non-agency residential 4 - 4 - Foreign government securities 1,415 - 1,415 - Foreign corporate securities 4,596 - 4,579 16 Total fixed maturities, available for sale 22,236 - 20,511 1,725 Equity securities, fair value 281 132 150 - (Some amounts may not reconcile due to rounding.) Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2021 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,421 $ - $ 1,421 $ - Obligations of U.S. States and political subdivisions 587 - 587 - Corporate securities 7,557 - 6,756 801 Asset-backed securities 3,582 - 2,330 1,251 Mortgage-backed securities Commercial 1,064 - 1,064 - Agency residential 2,375 - 2,375 - Non-agency residential 7 - 7 - Foreign government securities 1,438 - 1,438 - Foreign corporate securities 4,279 - 4,262 16 Total fixed maturities, available for sale 22,308 - 20,240 2,068 Equity securities, fair value 1,826 1,742 84 - (Some amounts may not reconcile due to rounding.)
Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs By Asset Type	Total Fixed Maturities, December 31, 2022 December 31, 2021 Corporate Asset-Backed Foreign Corporate Asset-Backed Foreign (Dollars in millions) Securities Securities CMBS Corporate Total Securities Securities Corporate Total Beginning balance fixed maturities $ 801 $ 1,251 $ - $ 16 $ 2,068 $ 701 $ 623 $ 6 $ 1,330 Total gains or (losses) (realized/unrealized) Included in earnings (10) - - - (10) (12) (6) - (18) Included in other comprehensive income (loss) 3 (35) - (4) (36) 4 (7) - (2) Purchases, issuances and settlements (45) 513 6 8 481 107 641 10 758 Transfers in and/or (out) of Level (35) (735) (6) (4) (779) - - - - Ending balance $ 715 $ 994 $ - $ 16 $ 1,725 $ 801 $ 1,251 $ 16 $ 2,068 The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held $ (23) $ 8 $ - $ - $ (15) $ (16) $ (8) $ - $ (24) (Some amounts may not reconcile due to rounding.)

Credit Facilities (Tables)

Credit Facilities (Tables)	12 Months Ended
Credit Facilities (Tables)	Dec. 31, 2022
Line of Credit Facility [Line Items]
Summary Of Costs Incurred Connection With Credit Facilities	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Credit facility interest and fees incurred - Wells Fargo Bank $ - $ - $ 1
Wells Fargo Bank Group Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Wells Fargo Bank Group Credit Facility $ - $ - $ 39 $ 39 12/30/2022
Bermuda Re Wells Fargo Bank Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Wells Fargo Bank Bilateral LOC Agreement $ 500 $ 463 12/29/2023 $ 500 $ 351 12/30/2022 (Some amounts may not reconcile due to rounding.)
Bermuda Re Citibank LOC Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bermuda Re Citibank LOC Facility- $ 230 $ 1 1/21/2023 $ 230 $ 4 02/28/2022 4 2/28/2023 1 03/01/2022 1 3/1/2023 1 11/24/2022 1 8/15/2023 217 12/31/2022 3 9/23/2023 1 8/15/2023 212 12/31/2023 1 9/23/2023 Bermuda Re Citibank LOC Facility 140 87 12/31/2023 140 84 12/31/2022 18 12/30/2026 23 12/30/2025 Total Citibank Bilateral $ 370 $ 329 $ 370 $ 333 (Some amounts may not reconcile due to rounding.)
Bermuda Re Bayerische Landesbank Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bayerische Landesbank Bilateral Secured $ 200 $ 183 12/31/2023 $ 200 $ 155 12/31/2022 (Some amounts may not reconcile due to rounding.)
Bermuda Re Bayerische Landesbank Unsecured Bilateral Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 Bank Commitment In Use Date of Expiry Bayerische Landesbank Unsecured Bilateral LOC Agreement - Committed $ 150 $ 150 12/31/2023 (Some amounts may not reconcile due to rounding.)
Bermuda Re Lloyd's Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bermuda Re Lloyd's Bank Credit Facility-Committed $ 50 $ 50 12/31/2023 $ 50 $ 46 12/31/2022 Bermuda Re Lloyd's Bank Credit Facility-Uncommitted 200 136 12/31/2023 - - Total Bermuda Re Lloyd's Bank Credit Facility $ 250 $ 186 $ 50 $ 46 (Some amounts may not reconcile due to rounding.)
Bermuda Re Barclays Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 At December 31, 2021 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Bermuda Re Barclays Credit Facility $ 200 $ 179 12/31/2023 $ 200 $ 186 12/31/2022 (Some amounts may not reconcile due to rounding.)
Bermuda Re Nordea Bank Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And Borrowings	(Dollars in millions) At December 31, 2022 Bank Commitment In Use Date of Expiry Nordea Bank ABP, NY Unsecured LOC Facility - Committed $ 200 $ 50 12/31/2023 Nordea Bank ABP, NY Unsecured LOC Facility - Uncommitted 100 100 12/31/2023 Total Nordea Bank ABP, $ 300 $ 150 (Some amounts may not reconcile due

Senior Notes (Tables)

Senior Notes (Tables)	12 Months Ended
Senior Notes (Tables)	Dec. 31, 2022
Senior Notes [Abstract]
Schedule Of Outstanding Senior Notes	December 31, 2022 December 31, 2021 Consolidated Consolidated Principal Balance Sheet Balance Sheet (Dollars in millions) Date Issued Date Due Amounts Market Value Amount Market Value 4.868 % Senior notes 6/5/2014 6/1/2044 $ 400 $ 397 $ 343 $ 397 $ 504 3.5 % Senior notes 10/7/2020 10/15/2050 1,000 981 677 980 1,055 3.125 % Senior notes 10/4/2021 10/15/2052 1,000 969 627 969 983 $ 2,400 $ 2,347 $ 1,647 $ 2,346 $ 2,542
Schedule Of Interest Expense Incurred In Connection With Senior Notes	Years Ended December 31, (Dollars in millions) Interest Paid Payable Dates 2022 2021 2020 4.868 % Senior Notes semi-annually June 1/December 1 $ 19 $ 19 $ 19 3.5 % Senior Notes semi-annually April 15/October 15 35 35 8 3.125 % Senior Notes semi-annually April 15/October 15 32 8 - $ 86 $ 62 $ 28 (Some amounts may not reconcile due to rounding.)

Long Term Subordinated Notes (T

Long Term Subordinated Notes (Tables)	12 Months Ended
Long Term Subordinated Notes (Tables)	Dec. 31, 2022
Long Term Subordinated Notes [Abstract]
Schedule Of Outstanding Fixed To Floating Rate Long Term Subordinated Notes	Maturity Date December 31, 2022 December 31, 2021 Original Consolidated Consolidated Principal Balance Sheet Balance Sheet (Dollars in millions) Date Issued Amount Scheduled Final Amount Market Value Amount Market Value Long-term subordinated notes 4/26/2007 $ 400 5/15/2037 5/1/2067 $ 218 $ 187 $ 224 $ 216
Schedule Of Interest Expense Incurred In Connection With Long Term Subordinated Notes	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Interest expense incurred $ 9 $ 6 $ 8

Collateralized Reinsurance An_2

Collateralized Reinsurance And Trust Agreements (Tables)	12 Months Ended
Collateralized Reinsurance And Trust Agreements (Tables)	Dec. 31, 2022
Collateralized Reinsurance And Trust Agreements [Abstract]
Premiums And Losses Ceded By The Company To Affiliate	Years Ended December 31, Mt. Logan Re Segregated Accounts 2022 2021 2020 (Dollars in millions) Ceded written premiums 201 341 303 Ceded earned premiums 206 333 306 Ceded losses and LAE 191 282 241 Assumed written premiums 5 12 19 Assumed earned premiums 5 12 19
Summary of Collateralized Reinsurance Agreements	(Dollars in millions) Class Description Effective Date Expiration Date Limit Coverage Basis Series 2018-1 Class A-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/30/2018 5/5/2023 $ 63 Aggregate Series 2018-1 Class B-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/30/2018 5/5/2023 200 Aggregate Series 2019-1 Class A-1 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2023 150 Occurrence Series 2019-1 Class B-1 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2023 275 Aggregate Series 2019-1 Class A-2 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2024 150 Occurrence Series 2019-1 Class B-2 US, Canada, Puerto Rico – Named Storm and Earthquake 12/12/2019 12/19/2024 275 Aggregate Series 2021-1 Class A-1 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/21/2025 150 Occurrence Series 2021-1 Class B-1 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/21/2025 85 Aggregate Series 2021-1 Class C-1 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/21/2025 85 Aggregate Series 2021-1 Class A-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/20/2026 150 Occurrence Series 2021-1 Class B-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/20/2026 90 Aggregate Series 2021-1 Class C-2 US, Canada, Puerto Rico – Named Storm and Earthquake 4/8/2021 4/20/2026 90 Aggregate Series 2022-1 Class A US, Canada, Puerto Rico – Named Storm and Earthquake 6/22/2022 6/22/2025 300 Aggregate Total available limit as of $ 2,063
Schedule of Proceeds from Issuance of Notes Held in Reinsurance Trusts	(Dollars in millions) Note Series Issue Date Maturity Date Amount Series 2018-1 Class A-2 4/30/2018 5/5/2023 $ 63 Series 2018-1 Class B-2 4/30/2018 5/5/2023 200 Series 2019-1 Class A-1 12/12/2019 12/19/2023 150 Series 2019-1 Class B-1 12/12/2019 12/19/2023 275 Series 2019-1 Class A-2 12/12/2019 12/19/2024 150 Series 2019-1 Class B-2 12/12/2019 12/19/2024 275 Series 2021-1 Class A-1 4/8/2021 4/21/2025 150 Series 2021-1 Class B-1 4/8/2021 4/21/2025 85 Series 2021-1 Class C-1 4/8/2021 4/21/2025 85 Series 2021-1 Class A-2 4/8/2021 4/20/2026 150 Series 2021-1 Class B-2 4/8/2021 4/20/2026 90 Series 2021-1 Class C-2 4/8/2021 4/20/2026 90 Series 2022-1 Class A 6/22/2022 6/22/2025 300 $ 2,063

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2022
Leases [Abstract]
Supplemental Information Relating to Operating Leases	Year Ended December 31, (Dollars in thousands) 2022 2021 Lease expense incurred: Operating lease cost $ 28 $ 27 At December 31, (Dollars in millions) 2022 2021 Operating lease right of use assets $ 128 $ 139 Operating lease liabilities 147 158 Year Ended December 31, (Dollars in millions) 2022 2021 Operating cash flows from operating leases $ (20) $ (18) At December 31, 2022 2021 Weighted average remaining operating lease term 10.8 11.6 years Weighted average discount rate on operating leases 4.08 % 4.08 %
Maturities of Lease Liabilities	(Dollars in thousands) 2023 $ 21 2024 21 2025 18 2026 16 2027 16 Thereafter 95 Undiscounted lease payments 187 Less: 40 Total operating lease liability $ 147

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2022
Income Taxes [Abstract]
Components Of The Provision	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Current tax expense (benefit): U.S. $ 76 $ 124 $ (108) Non-U.S. 5 2 3 Total current tax expense (benefit) 81 126 (105) Deferred tax expense (benefit): U.S. (90) 38 179 Non-U.S. - 3 (3) Total deferred tax expense (90) 41 176 Total income tax expense (benefit) $ (9) $ 167 $ 71 (Some amounts may not reconcile due to rounding.)
Reconciliation Of The Difference Between The Provision For Income Taxes And The Expected Tax Provision At The Weighted Average Tax Rate	Years Ended December 31, 2022 2021 2020 (Dollars in millions) U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Underwriting gain (loss) $ (81) $ 558 $ (83) $ 307 $ 24 $ (278) Net investment income 607 223 708 457 340 303 Net realized capital gains (losses) (426) (29) 266 (8) 235 33 Net derivative gain (loss) - - - 3 - 2 Corporate expenses (26) (35) (33) (34) (16) (25) Interest, fee and bond (101) - (70) - (36) (1) Other income (expense) (6) (96) 23 11 (15) 20 Pre-tax income (loss) $ (32) $ 620 $ 811 $ 735 $ 532 $ 53 Expected tax provision at the applicable (9) - 170 14 112 (10) Increase (decrease) in taxes resulting Tax exempt (4) - (4) - (4) - Dividend received deduction (3) - (1) - (1) - Proration 1 - 1 - 1 - Affiliated preferred stock 7 - 7 - 7 - Creditable foreign premium tax (11) - (13) - (12) - Tax audit settlement - - - - - - Share-based compensation tax benefits (3) - (2) - (3) - Impact of CARES Act - - - - (32) - Valuation allowance - 5 - (10) - 15 Change in uncertain tax positions - - - - - - Other 5 - 3 1 3 (5) Total income tax $ (14) $ 5 $ 161 $ 5 $ 71 $ - (Some amounts may not reconcile due to rounding.)
Net Deferred Income Tax Assets/(Liabilities)	Years Ended December 31, (Dollars in millions) 2022 2021 Deferred tax assets: $ 218 $ - 154 130 114 108 29 31 28 20 24 4 12 6 9 13 8 8 3 3 3 22 10 9 Total deferred tax assets 611 354 Deferred tax liabilities: 105 99 56 57 25 27 16 4 7 98 3 2 - 37 8 6 Total deferred tax liabilities 220 329 Net deferred tax assets 392 25 (25) (18) Total net deferred tax $ 367 $ 7 (Some amounts may not reconcile due to rounding.)

Reinsurance (Tables)

Reinsurance (Tables)	12 Months Ended
Reinsurance (Tables)	Dec. 31, 2022
Reinsurance [Abstract]
Premiums Written And Earned And Incurred Losses And LAE	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Written premiums: Direct $ 4,602 $ 3,988 $ 3,218 Assumed 9,350 9,062 7,264 Ceded (1,608) (1,604) (1,365) Net written premiums $ 12,344 $ 11,446 $ 9,117 Premiums earned: Direct $ 4,218 $ 3,589 $ 3,028 Assumed 9,082 8,315 7,055 Ceded (1,513) (1,498) (1,401) Net premiums earned $ 11,787 $ 10,406 $ 8,682 Incurred losses and LAE: Direct $ 2,804 $ 2,385 $ 2,141 Assumed 6,285 5,741 5,164 Ceded (988) (735) (754) Net incurred losses and LAE $ 8,100 $ 7,391 $ 6,551

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
Other Comprehensive Income (Loss) (Tables)	Dec. 31, 2022
Other Comprehensive Income (Loss) [Abstract]
Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations	Years Ended December 31, 2022 2021 2020 (Dollars in millions) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized appreciation (depreciation) ("URA(D)") on securities - non-credit related $ (2,332) $ 295 $ (2,037) $ (548) $ 59 $ (488) $ 463 $ (40) $ 423 Reclassification of net realized losses (gains) included in net income (loss) 107 (18) 89 5 (2) 4 2 (6) (3) Foreign currency translation adjustments (82) 5 (77) (64) 2 (62) 90 (4) 86 Benefit plan actuarial net gain (loss) 18 (4) 15 22 (5) 17 (7) 1 (6) Reclassification of benefit plan liability amortization included in net income (loss) 3 (1) 2 8 (2) 6 8 (2) 6 Total other comprehensive income $ (2,285) $ 277 $ (2,008) $ (577) $ 54 $ (523) $ 556 $ (49) $ 507
Reclassification From Accumulated Other Comprehensive Income	Years Ended December 31, Affected line item within the statements AOCI component 2022 2021 operations and comprehensive (Dollars in millions) URA(D) on securities $ 107 $ 5 Other net realized capital gains (losses) (18) (2) Income tax expense (benefit) $ 89 $ 4 Net income (loss) Benefit plan net gain (loss) $ 3 $ 8 Other underwriting expenses (1) (2) Income tax expense (benefit) $ 2 $ 6 Net income (loss)
Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax, In The Consolidated Balance Sheets	Years Ended December 31, (Dollars in millions) 2022 2021 Beginning balance of URA (D) on securities $ 239 $ 724 Current period change in URA(D) of investments - non-credit related (1,948) (485) Ending balance of URA(D) on securities (1,709) 239 Beginning balance of foreign currency translation adjustments (177) (115) Current period change in foreign currency translation adjustments (77) (62) Ending balance of foreign currency translation adjustments (254) (177) Beginning balance of benefit plan net gain (loss) (50) (74) Current period change in benefit plan net gain (loss) 17 23 Ending balance of benefit plan net gain (loss) (33) (50) Ending balance of accumulated other comprehensive income (loss) $ (1,996) $ 12 (Some amounts may not reconcile due to rounding.)

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
Employee Benefit Plans (Tables)	Dec. 31, 2022
Summary Of Contributions To Defined Benefit Pension Plans	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Company contributions $ 6 $ 4 $ 7
Summary Of Accumulated Benefit Obligation	At December 31, (Dollars in millions) 2022 2021 Qualified Plan $ 258 $ 339 Non-qualified Plan 6 12 Total $ 264 $ 352 (Some amounts may not reconcile due to rounding.)
Projected Benefit Obligations In Excess Of Plan Assets	At December 31, (Dollars in millions) 2022 2021 Qualified Plan Projected benefit obligation $ 284 $ 390 Fair value of plan assets 285 377 Non-qualified Plan Projected benefit obligation $ 6 $ 12 Fair value of plan assets - -
Accumulated Benefit Obligations In Excess Of Plan Assets	At December 31, (Dollars in millions) 2022 2021 Qualified Plan Accumulated benefit obligation $ - $ - Fair value of plan assets - - Non-qualified Plan Accumulated benefit obligation $ 6 $ 12 Fair value of plan assets - -
Defined Benefit Pension Plan [Member]
Summary Of Pension Expenses	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Pension expense $ (2) $ 3 $ 8
Summary Of Status Of Plan	Years Ended December 31, (Dollars in millions) 2022 2021 Change in projected benefit obligation: Benefit obligation at beginning of year $ 403 $ 404 Service cost 9 11 Interest cost 10 8 Actuarial (gain)/loss (115) (9) Curtailment - - Benefits paid (15) (12) Projected benefit obligation at end of year 291 403 Change in plan assets: Fair value of plan assets at beginning of year 377 354 Actual return on plan assets (83) 31 Actual contributions during the year 6 4 Administrative expenses paid - - Benefits paid (15) (12) Fair value of plan assets at end of year 285 377 Funded status at end of year $ (6) $ (25) (Some amounts may not reconcile due
Amounts Recognized In The Consolidated Balance Sheets	At December 31, (Dollars in millions) 2022 2021 Other assets (due beyond one year) $ 1 $ - Other liabilities (due within one year) (1) (1) Other liabilities (due beyond one year) (6) (24) Net amount recognized in the consolidated balance sheets $ (6) $ (25) (Some amounts may not reconcile due to rounding.)
Amounts Not Yet Reflected In Net Periodic Benefit Cost And Included In Accumulated Other Comprehensive Income (Loss)	At December 31, (Dollars in millions) 2022 2021 Accumulated income (loss) $ (56) $ (68) Accumulated other comprehensive income (loss) $ (56) $ (68) (Some amounts may not reconcile due to rounding.)
Other Changes In Other Comprehensive Income (Loss)	Years Ended December 31, (Dollars in millions) 2022 2021 Other comprehensive income (loss) at December 31, prior year $ (68) $ (92) Net gain (loss) arising during period 7 15 Recognition of amortizations in net periodic benefit cost: Actuarial loss 4 9 Curtailment loss recognized - - Other comprehensive income (loss) at December 31, current year $ (56) $ (68) (Some amounts may not reconcile due to rounding.)
Net Periodic Benefit Cost	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Service cost $ 9 $ 11 $ 10 Interest cost 10 8 10 Expected return on assets (25) (24) (21) Amortization of actuarial loss from earlier periods 4 8 9 Settlement 1 - 1 Net periodic benefit cost $ (2) $ 3 $ 8 Other changes recognized in other comprehensive income (loss): Other comprehensive income (loss) attributable to change from prior year (12) (24) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (14) $ (21) (Some amounts may not reconcile due to rounding.)
Expected Benefit Payments	(Dollars in millions) 2023 $ 13 2024 14 2025 14 2026 15 2027 17 Next 5 years 100
Fair Value Measurement Levels For Qualified Plan Assets	Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2022 (Level 1) (Level 2) (Level 3) Assets: Short-term investments, which approximates fair value (a) $ 4 $ 4 $ - $ - Mutual funds, fair value Fixed income (b) 68 68 - - Equities (c) 211 211 - - Total $ 283 $ 283 $ - $ - (Some amounts may not reconcile due to rounding.) This category includes high quality, short-term (b) This category includes fixed income funds, which invest in 70 % in U.S. securities and 30 % in international securities. (c) This category includes funds, which invest in small, mid and multi-cap equity securities common stock characteristics, such as rights and warrants, with 50 % in U.S. equities and 50 % in international equities. Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in millions) December 31, 2021 (Level 1) (Level 2) (Level 3) Assets: Short-term investments, which approximates fair value (a) $ 3 $ 3 $ - $ - Mutual funds, fair value Fixed income (b) 85 85 - - Equities (c) 287 287 - - Total $ 375 $ 375 $ - $ - (Some amounts may not reconcile due to rounding.) This category includes high quality, short-term (b) This category includes fixed income funds, which invest in 70 % in U.S. securities and 30 % in international securities. (c) This category includes funds, which invest in small, mid and multi-cap equity securities common stock characteristics, such as rights and warrants, with 50 % in U.S. equities and 50 % in international equities.
Post-Retirement Plan [Member]
Summary Of Status Of Plan	At December 31, (Dollars in millions) 2022 2021 Change in projected benefit obligation: Benefit obligation at beginning of year $ 31 $ 35 Service cost 1 1 Interest cost 1 1 Amendments - - Actuarial (gain)/loss (10) (6) Benefits paid - - Benefit obligation at end of year 21 31 Change in plan assets: Fair value of plan assets at beginning of year - - Employer contributions - - Benefits paid - - Fair value of plan assets at end of year - - Funded status at end of year $ (21) $ (31)
Amounts Recognized In The Consolidated Balance Sheets	At December 31, (Dollars in millions) 2022 2021 Other liabilities (due within one year) $ (1) $ (1) Other liabilities (due beyond one year) (21) (30) Net amount recognized in the consolidated balance sheets $ (21) $ (31) (Some amounts may not reconcile due to rounding.)
Amounts Not Yet Reflected In Net Periodic Benefit Cost And Included In Accumulated Other Comprehensive Income (Loss)	At December 31, (Dollars in millions) 2022 2021 Accumulated income (loss) $ 13 $ 2 Accumulated prior service credit (cost) 1 2 Accumulated other comprehensive income (loss) $ 14 $ 4
Other Changes In Other Comprehensive Income (Loss)	Years Ended December 31, (Dollars in millions) 2022 2021 Other comprehensive income (loss) at December 31, prior year $ 4 $ (2) Net gain (loss) arising during period 10 6 Prior Service credit (cost) arising during period - - Recognition of amortizations in net periodic benefit cost: Actuarial loss (gain) - - Prior service cost - (1) Other comprehensive income (loss) at December 31, current year $ 14 $ 4
Net Periodic Benefit Cost	Years Ended December 31, (Dollars in millions) 2022 2021 2020 Service cost $ 1 $ 1 $ 1 Interest cost 1 1 1 Prior service credit recognition - (1) (1) Net gain recognition - - - Net periodic cost $ 1 $ 1 $ 1 Other changes recognized in other comprehensive income (loss): Other comprehensive gain (loss) attributable to change from prior year (10) (5) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (9) $ (4) (Some amounts may not reconcile due to rounding.)
Expected Benefit Payments	(Dollars in millions) 2023 $ 1 2024 1 2025 1 2026 1 2027 1 Next 5 years 7

Dividend Restrictions And Sta_2

Dividend Restrictions And Statutory Financial Information (Tables)	12 Months Ended
	Dec. 31, 2022
Dividend Restrictions And Statutory Financial Information [Abstract]
Regulatory Targeted Capital And The Actual Statutory Capital	Bermuda Re (1) Everest Re (2) At December 31, At December 31, (Dollars in millions) 2022 (3) 2021 2022 2021 Regulatory targeted capital $ - $ 2,169 $ 3,353 $ 2,960 Actual capital $ 2,759 $ 3,184 $ 5,553 $ 5,717 Regulatory targeted capital represents (2) Regulatory targeted capital represents 200 % of the RBC authorized control level calculation for the applicable (3) The 2022 BSCR calculation is not yet due to be completed; however, level.

Commitments And Contingencies (

Commitments And Contingencies (Tables)	12 Months Ended
Commitments And Contingencies (Tables)	Dec. 31, 2022
Commitments And Contingencies [Abstract]
Summary Of Estimated Cost To Replace Annuities For Contingent Liability	At December 31, (Dollars in thousands) 2022 2021 The Prudential $ 137 $ 138 Unaffiliated life insurance company 34 35

Share-Based Compensation Plans

Share-Based Compensation Plans (Tables)	12 Months Ended
Share-Based Compensation Plans (Tables)	Dec. 31, 2022
Share-Based Compensation Plans [Abstract]
Company's Shareholder Approved Plans	Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2022 49,028 $ 88.52 Granted - - Exercised 49,028 88.52 Forfeited/Cancelled/Expired – - Outstanding at December 31, 2022 – - $ - . Exercisable at December 31, 2022 – - $ - Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in millions; Shares in whole amounts) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2021 116,871 $ 87.87 Granted - - Exercised 67,843 87.39 Forfeited/Cancelled/Expired - - Outstanding at December 31, 2021 49,028 88.52 0.2 $ 9 . Exercisable at December 31, 2021 49,028 88.52 0.2 $ 9 Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in millions; Shares in whole amounts) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2020 170,704 $ 87.18 Granted - - Exercised 53,833 85.69 Forfeited/Cancelled/Expired - - Outstanding at December 31, 2020 116,871 87.87 0.7 $ 17 . Exercisable at December 31, 2020 116,871 87.87 0.7 $ 17
Summary Of Company's Non-Vested Shares And Changes	Years Ended December 31, 2022 2021 2020 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Restricted (non-vested) Shares Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 496,094 $ 247.76 483,427 $ 246.60 495,137 $ 228.02 Granted 203,598 300.38 213,901 243.51 200,929 269.86 Vested 162,579 246.41 158,735 238.67 175,413 220.88 Forfeited 57,483 262.28 42,499 247.02 37,226 246.20 Outstanding at December 31, 479,630 268.82 496,094 247.76 483,427 246.60
Company's Non-Vested Performance Share Unit Awards	Years Ended December 31, 2022 2021 2020 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Performance Share Unit Awards Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 50,495 $ - 38,891 $ - 34,850 $ - Granted 18,340 301.54 22,205 242.24 16,120 277.15 Increase/(Decrease) on vesting units due to performance 3,028 - (800) - (2,227) - Vested 15,919 274.37 9,801 242.24 6,157 277.15 Forfeited 1,083 - - - 3,695 - Outstanding at December 31, 54,861 - 50,495 - 38,891 -

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
Segment Reporting (Tables)	Dec. 31, 2022
Segment Reporting [Abstract]
Schedule Of Underwriting Results For Operating Segments	Year Ended December 31, 2022 (Dollars in millions) Reinsurance Insurance Total Gross written premiums $ 9,316 $ 4,636 $ 13,952 Net written premiums 8,983 3,361 12,344 Premiums earned $ 8,663 $ 3,124 $ 11,787 Incurred losses and LAE 5,997 2,103 8,100 Commission and brokerage 2,134 394 2,528 Other underwriting expenses 218 463 682 Underwriting gain (loss) $ 313 $ 164 $ 477 Net investment income 830 Net realized capital gains (losses) (455) Corporate expenses (61) Interest, fee and bond issue cost amortization expense (101) Other income (expense) (102) Income (loss) before taxes $ 588 Year Ended December 31, 2021 (Dollars in millions) Reinsurance Insurance Total Gross written premiums $ 9,067 $ 3,982 $ 13,050 Net written premiums 8,536 2,910 11,446 Premiums earned $ 7,757 $ 2,649 $ 10,406 Incurred losses and LAE 5,556 1,835 7,391 Commission and brokerage 1,854 354 2,209 Other underwriting expenses 199 383 583 Underwriting gain (loss) $ 147 $ 76 $ 224 Net investment income 1,165 Net realized capital gains (losses) 258 Corporate expenses (68) Interest, fee and bond issue cost amortization expense (70) Other income (expense) 37 Income (loss) before taxes $ 1,546 Year Ended December 31, 2020 (Dollars in millions) Reinsurance Insurance Total Gross written premiums $ 7,282 $ 3,201 $ 10,482 Net written premiums 6,768 2,349 9,117 Premiums earned $ 6,466 $ 2,215 $ 8,682 Incurred losses and LAE 4,933 1,617 6,551 Commission and brokerage 1,552 321 1,873 Other underwriting expenses 176 336 511 Underwriting gain (loss) $ (195) $ (58) $ (254) Net investment income 642 Net realized capital gains (losses) 268 Corporate expenses (41) Interest, fee and bond issue cost amortization expense (36) Other income (expense) 6 Income (loss) before taxes $ 585
Schedule Of Gross Written Premiums Derived From Largest Non-U.S. Market	Year Ended December 31, (Dollars in millions) 2022 2021 2020 United Kingdom gross written premium $ 1,217 $ 1,246 $ 1,116

Summary Of Significant Accoun_4

Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Item shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares
Summary Of Significant Accounting Policies [Line Items]
Minimum percent of prepaid reinsurance premiums for any foreign reinsurers that were collateralized	10%
Number of operating segments \| Item	2
Options outstanding \| shares		49,028	116,871	170,704
Anti-dilutive options \| shares		0	0
Change in beginning balance due to adoption of ASU	$ 8,441	$ 10,139	$ 9,726
Accumulated Other Comprehensive Income [Member]
Summary Of Significant Accounting Policies [Line Items]
Change in beginning balance due to adoption of ASU	(1,996)	12	535	$ 28
Retained Earnings [Member]
Summary Of Significant Accounting Policies [Line Items]
Change in beginning balance due to adoption of ASU	$ 12,042	11,700	10,567	10,307
Accounting Standards Update 2016-13 [Member] \| Retained Earnings [Member] \| Cumulative Effect Period Of Adoption Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Change in beginning balance due to adoption of ASU				$ (4)

Summary Of Significant Accoun_5

Summary Of Significant Accounting Policies (Net Income (Loss) Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Summary Of Significant Accounting Policies [Abstract]
Net income (loss)	$ 597	$ 1,379	$ 514
Less: dividends declared-common shares and unvested common shares	(255)	(247)	(249)
Undistributed earnings	$ 342	$ 1,132	$ 265
Percentage Allocated To Common Shareholders	98.70%	98.70%	98.70%
Net income (loss) available to common stockholders, total	$ 337	$ 1,117	$ 262
Add: dividends declared-common shareholders	252	244	246
Numerator for basic and diluted earnings per common share	$ 589	$ 1,361	$ 508
Denominator for basic earnings per weighted-average common shares	39	39	40
Effect of dilutive securities: Options
Denominator for diluted earnings per adjusted weighted-average common shares	39	39	40
Basic	$ 15.19	$ 34.66	$ 12.81
Diluted	$ 15.19	$ 34.62	$ 12.78
Basic weighted-average common shares outstanding	39	39	40
Basic weighted-average common shares outstanding and unvested common shares expected to vest	39	40	40

Investments (Narrative) (Detail

Investments (Narrative) (Details) $ in Millions	12 Months Ended
Investments (Narrative) (Details) $ in Millions	Dec. 31, 2022 USD ($) Item	Dec. 31, 2021 USD ($) Item	Dec. 31, 2020 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Reclassification of specific investments from fixed maturity securities, available for sale at fair value to fixed maturity securities, held to maturity at amortized cost net of credit allowances	$ 722
Unrealized loss from transfer	53
Additional contractual commitments	$ 2,600
Contractual commitments, investment period expiration date	Dec. 31, 2026
Other invested assets	$ 4,085	2,920
Fair Value	$ 22,236	$ 22,308
Number of securities held as primary beneficiary \| Item	0	0
Maximum exposure to loss	$ 4,100	$ 2,900
Commitments to fund investments	2,100
Securities, carrying value	1,400
Policy Cash Surrender Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Other invested assets	939
Recorded an Allowance for Credit Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate market value of investments in unrealized loss position		16
Gross unrealized depreciation		(0.4)
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate market value of investments in unrealized loss position	19,647	9,335
Gross unrealized losses on investments in unrealized loss position	1,982	203
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation	1,217	128
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation	764	75
Fair Value	$ 22,236	$ 22,308
Fixed Maturity Securities [Member] \| Sales Revenue, Net [Member] \| Issuer with the second the largest unrealized loss position [Member] \| Issuer [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage threshold of unrealized losses not exceeded by any one single issuer	0.20%	0.50%
Fixed Maturity Securities [Member] \| US Government Securities [Member] \| Sales Revenue, Net [Member] \| Issuer [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage threshold of unrealized losses not exceeded by any one single issuer	5.20%	2.70%
Investment Grade [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation	$ 1,100	$ 116
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation	$ 732	$ 72

Investments (Summary Of Amortiz

Investments (Summary Of Amortized Cost, Allowance For Credit Losses, Gross Unrealized Appreciation/(Depreciation) And Fair Value Of Fixed Maturity Securities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fixed maturity securities - available for sale:
Amortized Cost	$ 24,191	$ 22,064
Allowance for Credit Losses	(54)	(30)
Fair Value	22,236	22,308
Fixed maturity securities - held to maturity:
Allowance for credit losses	(9)
Fair Value	821
Fixed Maturity Securities [Member]
Fixed maturity securities - available for sale:
Amortized Cost	24,191	22,064
Allowance for Credit Losses	(54)	(30)
Unrealized Appreciation	81	478
Unrealized Depreciation	(1,982)	(203)
Fair Value	22,236	22,308
Fixed maturity securities - held to maturity:
Amortized Cost	848
Allowance for credit losses	(9)
Unrealized Appreciation	3
Unrealized Depreciation	(22)
Fair Value	821
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member]
Fixed maturity securities - available for sale:
Amortized Cost	1,334	1,407
Allowance for Credit Losses
Unrealized Appreciation	6	24
Unrealized Depreciation	(82)	(10)
Fair Value	1,257	1,421
Obligations Of U.S. States And Political Subdivisions [Member]
Fixed maturity securities - available for sale:
Amortized Cost	444	559
Allowance for Credit Losses
Unrealized Appreciation	2	29
Unrealized Depreciation	(32)	(1)
Fair Value	413	587
Corporate Securities [Member]
Fixed maturity securities - available for sale:
Amortized Cost	7,044	7,444
Allowance for Credit Losses	(45)	(19)
Unrealized Appreciation	31	195
Unrealized Depreciation	(561)	(63)
Fair Value	6,469	7,557
Fixed maturity securities - held to maturity:
Amortized Cost	152
Allowance for credit losses	(2)
Unrealized Appreciation
Unrealized Depreciation	(6)
Fair Value	144
Asset-Backed Securities [Member]
Fixed maturity securities - available for sale:
Amortized Cost	4,229	3,579
Allowance for Credit Losses		(8)
Unrealized Appreciation	5	22
Unrealized Depreciation	(171)	(12)
Fair Value	4,063	3,582
Fixed maturity securities - held to maturity:
Amortized Cost	661
Allowance for credit losses	(6)
Unrealized Appreciation	2
Unrealized Depreciation	(15)
Fair Value	642
Mortgage-Backed Securities: Commercial [Member]
Fixed maturity securities - available for sale:
Amortized Cost	1,023	1,032
Allowance for Credit Losses
Unrealized Appreciation		38
Unrealized Depreciation	(105)	(6)
Fair Value	919	1,064
Fixed maturity securities - held to maturity:
Amortized Cost	7
Allowance for credit losses
Unrealized Appreciation
Unrealized Depreciation
Fair Value	7
Mortgage Backed Securities: Agency residential [Member]
Fixed maturity securities - available for sale:
Amortized Cost	3,382	2,361
Allowance for Credit Losses
Unrealized Appreciation	7	33
Unrealized Depreciation	(290)	(19)
Fair Value	3,099	2,375
Mortgage Backed Securities: Non-agency residential [Member]
Fixed maturity securities - available for sale:
Amortized Cost	5	7
Allowance for Credit Losses
Unrealized Appreciation
Unrealized Depreciation	(1)
Fair Value	4	7
Foreign Government Securities [Member]
Fixed maturity securities - available for sale:
Amortized Cost	1,586	1,424
Allowance for Credit Losses
Unrealized Appreciation	8	42
Unrealized Depreciation	(179)	(28)
Fair Value	1,415	1,438
Foreign Corporate Securities [Member]
Fixed maturity securities - available for sale:
Amortized Cost	5,143	4,251
Allowance for Credit Losses	(10)	(3)
Unrealized Appreciation	23	95
Unrealized Depreciation	(562)	(65)
Fair Value	4,596	$ 4,279
Fixed maturity securities - held to maturity:
Amortized Cost	28
Allowance for credit losses	(1)
Unrealized Appreciation	2
Unrealized Depreciation
Fair Value	$ 28

Investments (Summary Of Amort_2

Investments (Summary Of Amortized Cost And Fair Value Of Fixed Maturity Securities, By Contractual Maturity) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fixed maturity securities - available for sale:
Amortized Cost	$ 24,191	$ 22,064
Fair Value	22,236	22,308
Fixed Maturity Securities [Member]
Fixed maturity securities - available for sale:
Due in one year or less, Amortized Cost	1,331	1,399
Due after one year through five years, Amortized Cost	8,131	7,075
Due after five years through ten years, Amortized Cost	4,636	5,004
Due after ten years, Amortized Cost	1,454	1,606
Amortized Cost	24,191	22,064
Due in one year or less, Fair Value	1,314	1,398
Due after one year through five years, Fair Value	7,546	7,154
Due after five years through ten years, Fair Value	4,057	5,101
Due after ten years, Fair Value	1,233	1,627
Fair Value	22,236	22,308
Fixed maturity securities - held to maturity:
Due in one year or less, Amortized Cost	5
Due after one year through five years, Amortized Cost	63
Due after five years through ten years, Amortized Cost	43
Due after ten years, Amortized Cost	68
Amortized Cost	848
Due in one year or less, Fair Value	5
Due after one year through five years, Fair Value	61
Due after five years through ten years, Fair Value	41
Due after ten years, Fair Value	65
Fair Value	821
Asset-Backed Securities [Member]
Fixed maturity securities - available for sale:
Amortized Cost	4,229	3,579
Fair Value	4,063	3,582
Fixed maturity securities - held to maturity:
Amortized Cost	661
Fair Value	642
Mortgage-Backed Securities: Commercial [Member]
Fixed maturity securities - available for sale:
Amortized Cost	1,023	1,032
Fair Value	919	1,064
Fixed maturity securities - held to maturity:
Amortized Cost	7
Fair Value	7
Mortgage Backed Securities: Agency residential [Member]
Fixed maturity securities - available for sale:
Amortized Cost	3,382	2,361
Fair Value	3,099	2,375
Mortgage Backed Securities: Non-agency residential [Member]
Fixed maturity securities - available for sale:
Amortized Cost	5	7
Fair Value	$ 4	$ 7

Investments (Summary Of Changes

Investments (Summary Of Changes In Net Unrealized Appreciation (Depreciation) For The Company's Investments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Change in unrealized appreciation (depreciation), pre-tax	$ (2,225)	$ (542)
Deferred tax benefit (expense)	277	58
Total URA(D) on securities arising during the period	(1,948)	(485)	$ 420
Fixed Maturity Securities and Short-Term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Change in unrealized appreciation (depreciation), pre-tax	$ (2,225)	$ (542)

Investments (Summary Of Aggrega

Investments (Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Security Type) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	$ 15,215	$ 8,094
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(1,217)	(128)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	4,432	1,241
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(764)	(75)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	19,647	9,335
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(1,982)	(203)
No Recorded Allowance for Credit Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	15,213
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(1,217)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	4,432
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(764)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	19,645
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(1,982)
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	668	504
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(31)	(6)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	487	92
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(52)	(4)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	1,155	596
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(82)	(10)
Obligations Of U.S. States And Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	235	51
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(23)	(1)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	27	3
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(9)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	261	54
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(32)	(1)
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	4,143	2,133
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(326)	(38)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	1,316	473
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(234)	(24)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	5,459	2,605
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(561)	(63)
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	3,204	1,954
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(142)	(11)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	456	42
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(29)	(1)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	3,661	1,996
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(171)	(12)
Mortgage-Backed Securities: Commercial [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	806	222
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(90)	(3)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	101	40
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(15)	(3)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	907	262
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(105)	(6)
Mortgage Backed Securities: Agency residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	1,905	1,101
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(132)	(12)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	870	280
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(158)	(7)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	2,776	1,381
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(289)	(19)
Mortgage Backed Securities: Non-agency residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	4	2
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	1
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(1)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	4	2
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total
Foreign Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	985	392
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(100)	(10)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	321	101
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(79)	(18)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	1,306	493
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(179)	(28)
Foreign Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	3,264	1,735
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(372)	(46)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	853	211
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(189)	(18)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	4,117	1,945
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(561)	$ (65)
Recorded an Allowance for Credit Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	2
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	2
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total

Investments (Summary Of Aggre_2

Investments (Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Contractual Maturity) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	$ 15,215	$ 8,094
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(1,217)	(128)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	4,432	1,241
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(764)	(75)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	19,647	9,335
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(1,982)	(203)
No Recorded Allowance for Credit Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	15,213
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(1,217)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	4,432
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(764)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	19,645
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(1,982)
Due In One Year Or Less [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	989	130
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(19)	(2)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	40	137
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(7)	(12)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	1,029	267
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(26)	(14)
Due In One Year Through Five Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	4,935	2,165
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(383)	(35)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	1,645	446
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(209)	(29)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	6,580	2,612
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(592)	(64)
Due In Five Years Through Ten Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	2,698	1,728
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(360)	(47)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	911	244
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(230)	(22)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	3,609	1,972
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(590)	(69)
Due After Ten Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	672	792
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(91)	(16)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	408	51
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(116)	(3)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	1,080	843
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(207)	(19)
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	3,204	1,954
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(142)	(11)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	456	42
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(29)	(1)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	3,661	1,996
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(171)	(12)
Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	2,715	1,325
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation	(222)	(15)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value	972	320
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(173)	(10)
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	3,687	1,646
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(395)	$ (25)
Recorded an Allowance for Credit Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Fair Value	2
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Gross Unrealized Depreciation
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Fair Value
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation
Fixed maturity securities, Duration of Unrealized Loss, Total, Fair Value	2
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total

Investments (Summary Of Compone

Investments (Summary Of Components Of Net Investment Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	$ 890	$ 1,208	$ 681
Funds held interest income (expense)	2	12	13
Future policy benefit reserve income (expense)		(1)	(1)
Gross investment income	892	1,219	692
Investment expenses	(62)	(54)	(50)
Net investment income	830	1,165	642
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	742	561	542
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	16	17	19
Short Term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	28	1	5
Limited Partnerships [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	75	565	113
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	$ 29	$ 63	$ 2

Investments (Summary Of Compo_2

Investments (Summary Of Components Of Net Realized Capital Gains (Losses)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Net realized gains (losses) from dispositions	$ 38	$ 50	$ (11)
Gains (losses) from fair value adjustments	(460)	236	280
Total net realized gains (losses) on investments	(455)	258	268
Beginning Balance	(30)	(2)
Credit losses on securities where credit losses were not previously recorded	(35)	(29)
Increases in allowance on previously impaired securities	(21)	(5)
Decrease in allowance on previously impaired securities
Reduction in allowance due to disposals	23	6
Ending Balance	(63)	(30)	(2)
Fixed Maturity Securities [Member] \| Market Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Allowance for credit losses	(33)	(28)	(2)
Net realized gains (losses) from dispositions	(87)	17	(5)
Gains (losses) from fair value adjustments			2
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Allowance for credit losses	(2)
Beginning Balance	(19)	(1)
Credit losses on securities where credit losses were not previously recorded	(13)	(21)
Increases in allowance on previously impaired securities	(20)	(3)
Decrease in allowance on previously impaired securities
Reduction in allowance due to disposals	6	6
Ending Balance	(46)	(19)	(1)
Equity Securities [Member] \| Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from fair value adjustments	(460)	236	278
Total net realized gains (losses) on investments	112	28	(9)
Other Invested Assets [Member]
Schedule of Available-for-sale Securities [Line Items]
Total net realized gains (losses) on investments	13	6	2
Short-Term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Total net realized gains (losses) on investments			1
Asset Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Allowance for credit losses	(6)
Beginning Balance	(8)
Credit losses on securities where credit losses were not previously recorded	(6)	(5)
Increases in allowance on previously impaired securities		(3)
Decrease in allowance on previously impaired securities
Reduction in allowance due to disposals	8
Ending Balance	(6)	(8)
Foreign Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Allowance for credit losses	(1)
Beginning Balance	(3)	(1)
Credit losses on securities where credit losses were not previously recorded	(17)	(2)
Increases in allowance on previously impaired securities	(1)
Decrease in allowance on previously impaired securities
Reduction in allowance due to disposals	10
Ending Balance	$ (11)	$ (3)	$ (1)

Investments (Summary Of Gross G

Investments (Summary Of Gross Gains (Losses) From Sales Of Fixed Maturity And Equity Securities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of securities	$ 39
Proceeds from sales of equity securities	2,217	990	376
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of securities	1,403	1,916	1,951
Gross gains from sales	40	72	80
Gross losses from sales	(127)	(55)	(85)
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of equity securities	2,217	990	376
Gross gains from sales	165	42	37
Gross losses from sales	$ (53)	$ (15)	$ (46)

Reserve For Losses, LAE And F_3

Reserve For Losses, LAE And Future Policy Benefit Reserve (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Item	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2015 USD ($)
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Current year losses	$ 8,102	$ 7,400	$ 6,149
Prior year losses	(2)	(9)	401
Reinsurance recoverable for paid and unpaid losses	$ 2,200	2,100
Contracts of insurance and reinsurance received claims during the past three years, in years	20 years
Business acquisition, cost of acquired entity and operations, cash paid				$ 140
Liabilities retroceded, percentage				100%
Maximum liability retroceded		450		$ 440
Increase (decrease) in A&E reserves	$ 138
Decrease in amount of liabilities retroceded		43
Total amount of liabilities retroceded				$ 300
Number of exposure groupings \| Item	200
Other Retrocessionaire [Member] \| Reinsurance Recoverable For Paid And Unpaid Claims And Claims Adjustments [Member] \| Reinsurer Concentration Risk [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Concentration risk, percentage	5%
Catastrophe Losses [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Current year losses	$ (80)	710
Covid-19 [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Current year losses			$ 511
Higher Premiums Earned [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Current year losses	45	$ 541
Munich Reinsurance Company [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance recoverable for paid and unpaid losses	$ 283
Munich Reinsurance Company [Member] \| Reinsurance Recoverable For Paid And Unpaid Claims And Claims Adjustments [Member] \| Reinsurer Concentration Risk [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Concentration risk, percentage	12.60%
Endurance Re [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance recoverable for paid and unpaid losses	$ 148
Endurance Re [Member] \| Reinsurance Recoverable For Paid And Unpaid Claims And Claims Adjustments [Member] \| Reinsurer Concentration Risk [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Concentration risk, percentage	6.60%
Mt Logan Re [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance recoverable for paid and unpaid losses	$ 520
Mt Logan Re [Member] \| Reinsurance Recoverable For Paid And Unpaid Claims And Claims Adjustments [Member] \| Reinsurer Concentration Risk [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Concentration risk, percentage	23.20%

Reserve For Losses, LAE And F_4

Reserve For Losses, LAE And Future Policy Benefit Reserve (Summary Of Activity In The Reserve For Losses And LAE) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reserve For Losses, LAE And Future Policy Benefit Reserve [Abstract]
Gross reserves beginning of period	$ 19,009	$ 16,322	$ 13,531
Less reinsurance recoverables on unpaid losses	(1,946)	(1,844)	(1,641)
Net reserves beginning of period	17,063	14,478	11,891
Incurred related to: Current year	8,102	7,400	6,149
Incurred related to: Prior years	(2)	(9)	401
Total incurred losses and LAE	8,100	7,391	6,551
Paid related to: Current year	1,220	2,491	2,046
Paid related to: Prior years	3,740	2,226	2,078
Total paid losses and LAE	4,960	4,717	4,124
Foreign exchange/translation adjustment	(243)	(89)	161
Net reserves end of period	19,960	17,063	14,478
Plus reinsurance recoverables on unpaid losses	2,105	1,946	1,844
Gross reserves end of period	$ 22,065	$ 19,009	$ 16,322

Reserve For Losses, LAE And F_5

Reserve For Losses, LAE And Future Policy Benefit Reserve (Ultimate Loss and ALAE And Paid Loss And ALAE, Net Of Reinsurance) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Claims Development [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	$ 19,671
Reinsurance [Member] \| Casualty Business [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	14,554
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	5,754
All outstanding liabilities prior to 2012, net of reinsurance	916
Liabilities for claims and claim adjustment expenses, net of reinsurance	9,715
Reinsurance [Member] \| Casualty Business [Member] \| 2013 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	684	$ 694	$ 699	$ 699	$ 719	$ 748	$ 779	$ 788	$ 801	$ 710
Total of IBNR Liabilities Plus Expected Development on Reported Claims	11
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	603	593	565	540	489	383	310	211	121	48
Reinsurance [Member] \| Casualty Business [Member] \| 2014 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	720	730	732	719	741	783	807	800	762
Total of IBNR Liabilities Plus Expected Development on Reported Claims	13
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	607	585	545	501	426	301	212	122	57
Reinsurance [Member] \| Casualty Business [Member] \| 2015 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	829	832	832	795	811	814	818	777
Total of IBNR Liabilities Plus Expected Development on Reported Claims	47
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	647	611	565	497	408	263	157	57
Reinsurance [Member] \| Casualty Business [Member] \| 2016 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	965	935	933	857	862	865	790
Total of IBNR Liabilities Plus Expected Development on Reported Claims	91
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	690	614	539	426	320	187	88
Reinsurance [Member] \| Casualty Business [Member] \| 2017 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	982	926	918	837	830	870
Total of IBNR Liabilities Plus Expected Development on Reported Claims	132
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	677	575	455	316	185	80
Reinsurance [Member] \| Casualty Business [Member] \| 2018 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,485	1,416	1,386	1,309	1,311
Total of IBNR Liabilities Plus Expected Development on Reported Claims	354
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	803	616	456	284	154
Reinsurance [Member] \| Casualty Business [Member] \| 2019 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,775	1,751	1,748	1,683
Total of IBNR Liabilities Plus Expected Development on Reported Claims	727
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	718	511	338	208
Reinsurance [Member] \| Casualty Business [Member] \| 2020 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,846	1,867	1,896
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1,178
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	489	300	190
Reinsurance [Member] \| Casualty Business [Member] \| 2021 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	2,449	2,454
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1,829
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	318	214
Reinsurance [Member] \| Casualty Business [Member] \| 2022 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	2,818
Total of IBNR Liabilities Plus Expected Development on Reported Claims	2,133
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	200
Reinsurance [Member] \| Property Business [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	20,594
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	15,134
All outstanding liabilities prior to 2012, net of reinsurance	103
Liabilities for claims and claim adjustment expenses, net of reinsurance	5,562
Reinsurance [Member] \| Property Business [Member] \| 2013 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	757	758	758	760	753	757	763	819	930	1,275
Total of IBNR Liabilities Plus Expected Development on Reported Claims	2
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	735	733	733	732	723	713	693	638	510	375
Reinsurance [Member] \| Property Business [Member] \| 2014 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	928	930	930	937	933	937	1,030	1,181	1,343
Total of IBNR Liabilities Plus Expected Development on Reported Claims	3
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	893	892	891	884	874	842	769	641	366
Reinsurance [Member] \| Property Business [Member] \| 2015 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	943	946	945	952	950	976	1,053	1,386
Total of IBNR Liabilities Plus Expected Development on Reported Claims	2
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	905	900	891	869	842	759	607	377
Reinsurance [Member] \| Property Business [Member] \| 2016 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,523	1,527	1,526	1,548	1,554	1,518	1,695
Total of IBNR Liabilities Plus Expected Development on Reported Claims	10
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	1,454	1,441	1,421	1,367	1,249	961	469
Reinsurance [Member] \| Property Business [Member] \| 2017 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	3,703	3,692	3,647	3,518	3,407	2,784
Total of IBNR Liabilities Plus Expected Development on Reported Claims	3
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	3,426	3,332	3,130	2,744	2,180	819
Reinsurance [Member] \| Property Business [Member] \| 2018 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	2,379	2,426	2,488	2,486	2,611
Total of IBNR Liabilities Plus Expected Development on Reported Claims	24
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,136	2,065	1,878	1,525	545
Reinsurance [Member] \| Property Business [Member] \| 2019 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,899	2,015	2,070	2,038
Total of IBNR Liabilities Plus Expected Development on Reported Claims	29
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	1,667	1,505	1,185	730
Reinsurance [Member] \| Property Business [Member] \| 2020 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	2,425	2,481	2,408
Total of IBNR Liabilities Plus Expected Development on Reported Claims	240
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	1,733	1,321	584
Reinsurance [Member] \| Property Business [Member] \| 2021 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	2,780	2,754
Total of IBNR Liabilities Plus Expected Development on Reported Claims	476
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	1,534	684
Reinsurance [Member] \| Property Business [Member] \| 2022 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	3,257
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1,898
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	652
Insurance [Member] \| Casualty Business [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	7,703
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	4,003
All outstanding liabilities prior to 2012, net of reinsurance	127
Liabilities for claims and claim adjustment expenses, net of reinsurance	3,828
Insurance [Member] \| Casualty Business [Member] \| 2013 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	347	350	350	351	344	351	393	393	393	393
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 25
Cumulative Number of Reported Claims	22,031
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 321	317	311	304	286	260	225	176	117	33
Insurance [Member] \| Casualty Business [Member] \| 2014 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	398	397	398	397	396	460	454	457	431
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 32
Cumulative Number of Reported Claims	26,449
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 360	350	339	325	297	257	202	125	41
Insurance [Member] \| Casualty Business [Member] \| 2015 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	477	471	471	467	541	535	527	519
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 40
Cumulative Number of Reported Claims	29,020
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 435	413	382	353	292	219	135	44
Insurance [Member] \| Casualty Business [Member] \| 2016 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	540	538	549	612	579	550	552
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 53
Cumulative Number of Reported Claims	34,164
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 481	443	400	341	268	164	55
Insurance [Member] \| Casualty Business [Member] \| 2017 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	629	628	652	620	600	610
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 85
Cumulative Number of Reported Claims	38,344
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 529	453	378	280	172	54
Insurance [Member] \| Casualty Business [Member] \| 2018 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	769	755	742	705	701
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 154
Cumulative Number of Reported Claims	39,029
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 594	443	317	207	63
Insurance [Member] \| Casualty Business [Member] \| 2019 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	885	876	844	848
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 204
Cumulative Number of Reported Claims	42,006
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 551	397	234	72
Insurance [Member] \| Casualty Business [Member] \| 2020 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,043	1,049	993
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 416
Cumulative Number of Reported Claims	39,545
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 388	236	66
Insurance [Member] \| Casualty Business [Member] \| 2021 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,246	1,189
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 732
Cumulative Number of Reported Claims	44,274
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 261	109
Insurance [Member] \| Casualty Business [Member] \| 2022 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,367
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 865
Cumulative Number of Reported Claims	37,739
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 85
Insurance [Member] \| Property Business [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	3,789
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	3,223
All outstanding liabilities prior to 2012, net of reinsurance
Liabilities for claims and claim adjustment expenses, net of reinsurance	566
Insurance [Member] \| Property Business [Member] \| 2013 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	92	92	92	92	92	92	92	91	98	112
Total of IBNR Liabilities Plus Expected Development on Reported Claims
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	92	92	92	92	92	92	92	92	93	$ 69
Insurance [Member] \| Property Business [Member] \| 2014 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	120	119	119	119	119	119	120	123	132
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	119	119	119	119	118	118	118	116	$ 82
Insurance [Member] \| Property Business [Member] \| 2015 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	150	146	146	144	146	144	153	173
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	147	147	146	146	145	142	141	$ 102
Insurance [Member] \| Property Business [Member] \| 2016 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	294	294	292	289	279	274	288
Total of IBNR Liabilities Plus Expected Development on Reported Claims
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	293	293	290	287	271	249	$ 162
Insurance [Member] \| Property Business [Member] \| 2017 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	504	489	495	492	499	494
Total of IBNR Liabilities Plus Expected Development on Reported Claims
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	499	496	479	457	423	$ 179
Insurance [Member] \| Property Business [Member] \| 2018 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	422	407	394	400	405
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	418	404	376	357	$ 245
Insurance [Member] \| Property Business [Member] \| 2019 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	363	351	347	347
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	357	339	315	$ 227
Insurance [Member] \| Property Business [Member] \| 2020 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	498	507	599
Total of IBNR Liabilities Plus Expected Development on Reported Claims	27
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	453	416	$ 293
Insurance [Member] \| Property Business [Member] \| 2021 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	579	646
Total of IBNR Liabilities Plus Expected Development on Reported Claims	66
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	473	$ 328
Insurance [Member] \| Property Business [Member] \| 2022 [Member]
Claims Development [Line Items]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	767
Total of IBNR Liabilities Plus Expected Development on Reported Claims	273
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 372

Reserve For Losses, LAE And F_6

Reserve For Losses, LAE And Future Policy Benefit Reserve (Average Annual Percentage Payout Incurred Claims By Age, Net Of Reinsurance) (Details)	Dec. 31, 2022
Reinsurance [Member] \| Casualty Business [Member]
Shortduration Insurance Contracts Historical Claims Duration [Line Items]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	8.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	7.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	11.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	12.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	12.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Six	10.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Seven	6.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Eight	4.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Nine	3.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Ten	1.50%
Reinsurance [Member] \| Property Business [Member]
Shortduration Insurance Contracts Historical Claims Duration [Line Items]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	27.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	31.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	16.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	8.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	4%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Six	2%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Seven	0.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Eight	0.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Nine	0.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Ten	0.10%
Insurance [Member] \| Casualty Business [Member]
Shortduration Insurance Contracts Historical Claims Duration [Line Items]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	8.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	17.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	16.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	15.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	13.40%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Six	8.40%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Seven	5.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Eight	3.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Nine	2.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Ten	1.30%
Insurance [Member] \| Property Business [Member]
Shortduration Insurance Contracts Historical Claims Duration [Line Items]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	54.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	31.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	5.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	4.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	2.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Six	1%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Seven	0.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Eight	0.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Nine	0.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Ten	0%

Reserve For Losses, LAE And F_7

Reserve For Losses, LAE And Future Policy Benefit Reserve (Reconciliation of the Net Incurred and Paid Claims Development) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shortduration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	$ 19,671
Total reinsurance recoverable on unpaid claims	2,105	$ 1,946
Unallocated claims adjustment expenses	244
Other	45
Total expenses	289
Total gross liability for unpaid claims and claim adjustment expense	22,065	$ 19,009	$ 16,322	$ 13,531
Reinsurance [Member] \| Casualty Business [Member]
Shortduration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	9,715
Total reinsurance recoverable on unpaid claims	150
Reinsurance [Member] \| Property Business [Member]
Shortduration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	5,562
Total reinsurance recoverable on unpaid claims	576
Insurance [Member] \| Casualty Business [Member]
Shortduration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	3,828
Total reinsurance recoverable on unpaid claims	1,220
Insurance [Member] \| Property Business [Member]
Shortduration Insurance Contracts Reconciliation Of Claims Development To Liability [Line Items]
Liabilities for claims and claim adjustment expenses, net of reinsurance	566
Total reinsurance recoverable on unpaid claims	$ 160

Reserve For Losses, LAE And F_8

Reserve For Losses, LAE And Future Policy Benefit Reserve (Summary Of Incurred Losses With Respect To A&E Reserve On Both Gross And Net Of Reinsurance Basis) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reserve For Losses, LAE And Future Policy Benefit Reserve [Abstract]
Gross basis: Beginning of period reserves	$ 175	$ 219	$ 258
Gross basis: Incurred losses	144	11	2
Gross basis: Paid losses	(42)	(55)	(40)
Gross basis: End of period reserves	278	175	219
Net basis: Beginning of period reserves	156	198	229
Net basis: Incurred losses	138		(1)
Net basis: Paid losses	(37)	(42)	(30)
Net basis: End of period reserves	$ 257	$ 156	$ 198

Reserve For Losses, LAE And F_9

Reserve For Losses, LAE And Future Policy Benefit Reserve (Summary Of Activity In The Reserve For Future Policy Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reserve For Losses, LAE And Future Policy Benefit Reserve [Abstract]
Balance at beginning of year	$ 36	$ 38	$ 43
Liabilities assumed
Adjustments to reserves	(3)	1	(1)
Benefits paid in the current year	(4)	(3)	(4)
Balance at end of year	$ 29	$ 36	$ 38

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) - USD ($)	12 Months Ended
Fair Value (Narrative) (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 22,236,000,000	$ 22,308,000,000
Fair value of public equity portfolio	97,000,000	1,300,000,000
Other assets	930,000,000	757,000,000
Fixed Maturities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	1,700,000,000	2,100,000,000
Asset Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	4,063,000,000	3,582,000,000
Fair value of public equity portfolio	2,600,000,000	2,000,000,000
Market Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfer in and/or (out) of Level 3	(779,000,000)	0
Fair Value [Member] \| Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	$ 292,000,000	$ 287,000,000

Fair Value (Fair Value Measurem

Fair Value (Fair Value Measurement Levels For All Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 22,236	$ 22,308
Equity securities, fair value	281	1,826
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, fair value	132	1,742
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, fair value	150	84
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, fair value
Fixed Maturity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	22,236	22,308
Fixed Maturity Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Fixed Maturity Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	20,511	20,240
Fixed Maturity Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	1,725	2,068
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	1,257	1,421
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	1,257	1,421
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Obligations Of U.S. States And Political Subdivisions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	413	587
Obligations Of U.S. States And Political Subdivisions [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Obligations Of U.S. States And Political Subdivisions [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	413	587
Obligations Of U.S. States And Political Subdivisions [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Corporate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	6,469	7,557
Corporate Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Corporate Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	5,754	6,756
Corporate Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	715	801
Asset-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	4,063	3,582
Asset-Backed Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Asset-Backed Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	3,069	2,330
Asset-Backed Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	994	1,251
Mortgage-Backed Securities: Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	919	1,064
Mortgage-Backed Securities: Commercial [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Mortgage-Backed Securities: Commercial [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	919	1,064
Mortgage-Backed Securities: Commercial [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Mortgage Backed Securities: Agency residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	3,099	2,375
Mortgage Backed Securities: Agency residential [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Mortgage Backed Securities: Agency residential [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	3,099	2,375
Mortgage Backed Securities: Agency residential [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Mortgage Backed Securities: Non-agency residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	4	7
Mortgage Backed Securities: Non-agency residential [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Mortgage Backed Securities: Non-agency residential [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	4	7
Mortgage Backed Securities: Non-agency residential [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Foreign Government Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	1,415	1,438
Foreign Government Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Foreign Government Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	1,415	1,438
Foreign Government Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Foreign Corporate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	4,596	4,279
Foreign Corporate Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value
Foreign Corporate Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	4,579	4,262
Foreign Corporate Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 16	$ 16

Fair Value (Activity Under Leve

Fair Value (Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs By Asset Type) (Details) - Fair Value Inputs Level3 [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	$ 2,068	$ 1,330
Total gains or (losses) (realized/unrealized) Included in earnings	(10)	(18)
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)	$ (36)	$ (2)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income Extensible List	Other comprehensive income (loss), net of tax	Other comprehensive income (loss), net of tax
Purchases, issuances and settlements	$ 481	$ 758
Transfers in and/or (out) of Level 3	(779)
Balance, end of period	1,725	2,068
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date	$ (15)	$ (24)
Fair Value Asset Recurring Basis Still Held Unrealized Gain Loss Statement Of Income Extensible List	Unrealized Gain Loss On Investments	Unrealized Gain Loss On Investments
Domestic Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	$ 801	$ 701
Total gains or (losses) (realized/unrealized) Included in earnings	(10)	(12)
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)	3	4
Purchases, issuances and settlements	(45)	107
Transfers in and/or (out) of Level 3	(35)
Balance, end of period	715	801
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date	(23)	(16)
Asset Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	1,251	623
Total gains or (losses) (realized/unrealized) Included in earnings		(6)
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)	(35)	(7)
Purchases, issuances and settlements	513	641
Transfers in and/or (out) of Level 3	(735)
Balance, end of period	994	1,251
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date	8	(8)
C M B S [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period
Total gains or (losses) (realized/unrealized) Included in earnings
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)
Purchases, issuances and settlements	6
Transfers in and/or (out) of Level 3	(6)
Balance, end of period
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date
Foreign Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	16	6
Total gains or (losses) (realized/unrealized) Included in earnings
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)	(4)
Purchases, issuances and settlements	8	10
Transfers in and/or (out) of Level 3	(4)
Balance, end of period	16	16
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date

Credit Facilities (Narrative) (

Credit Facilities (Narrative) (Details) - USD ($)			12 Months Ended
Credit Facilities (Narrative) (Details) - USD ($)	May 26, 2016	Jun. 22, 2012	Dec. 31, 2022	Dec. 31, 2021	May 05, 2021	Feb. 23, 2021
Line of Credit Facility [Line Items]
Line of credit facility, commitment			$ 1,500,000,000
Uncommitted amount available			440,000,000
Borrowings from FHLB			$ 519,000,000	$ 519,000,000
Wells Fargo Bank Group Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, term of credit facility	5 years	4 years
Line of credit facility, commitment	$ 800,000,000	$ 800,000,000		$ 39,000,000
Bermuda Re Wells Fargo Bank Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, expiration date			Dec. 29, 2023	Dec. 30, 2022
Line of credit facility, commitment			$ 500,000,000	$ 500,000,000	$ 500,000,000	$ 50,000,000
Bermuda Re Citibank LOC Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, commitment			370,000,000	$ 370,000,000
Uncommitted amount available			$ 140,000,000
Bermuda Re Citibank Letter of Credit Facility One [Member]
Line of Credit Facility [Line Items]
Line of credit facility, expiration date			Jan. 21, 2023	Feb. 28, 2022
Line of credit facility, commitment			$ 230,000,000	$ 230,000,000
Bermuda Re Bayerische Landesbank Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, expiration date			Dec. 31, 2023	Dec. 31, 2022
Line of credit facility, commitment			$ 200,000,000	$ 200,000,000
Bermuda Re Bayerische Landesbank Unsecured Bilateral Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, expiration date			Dec. 31, 2023
Line of credit facility, commitment			$ 150,000,000
Bermuda Re Lloyd's Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, commitment			$ 250,000,000	$ 50,000,000
Bermuda Re Lloyd's Bank Credit Facility - Committed [Member]
Line of Credit Facility [Line Items]
Line of credit facility, expiration date			Dec. 31, 2023	Dec. 31, 2022
Line of credit facility, commitment			$ 50,000,000	$ 50,000,000
Bermuda Re Barclays Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, expiration date			Dec. 31, 2023	Dec. 31, 2022
Line of credit facility, commitment			$ 200,000,000	$ 200,000,000
Federal Home Loan Bank Of New York [Member]
Line of Credit Facility [Line Items]
Maximum percentage of admitted assets allowed for borrowing base			10%
Admitted assets for FHLB			$ 22,400,000,000
Maximum amount available under FHLB			2,200,000,000
Borrowings from FHLB			$ 519,000,000
Amount of borrowed funds required to be used to acquire additional membership stock, percentage			4.50%
Interest expense incurred			$ 4,000,000	$ 1,000,000
Bermuda Re Nordea Bank Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, commitment			$ 300,000,000

Credit Facilities (Summary Of C

Credit Facilities (Summary Of Costs Incurred Connection With Credit Facilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Wells Fargo Bank Group Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility interest and fees incurred			$ 1

Credit Facilities (Summary Of O

Credit Facilities (Summary Of Outstanding Letters Of Credit And Borrowings) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	May 05, 2021	Feb. 23, 2021	May 26, 2016	Jun. 22, 2012
Line of Credit Facility [Line Items]
Commitment	$ 1,500,000,000
Wells Fargo Bank Group Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment		$ 39,000,000			$ 800,000,000	$ 800,000,000
Wells Fargo Bank Group Credit Facility Tranche One [Member] \| Debt Instrument Redemption Period One [Member]
Line of Credit Facility [Line Items]
Commitment		39,000,000
In Use		$ 39,000,000
Date of Expiry		Dec. 30, 2022
Bermuda Re Wells Fargo Bank Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment	500,000,000	$ 500,000,000	$ 500,000,000	$ 50,000,000
In Use	$ 463,000,000	$ 351,000,000
Date of Expiry	Dec. 29, 2023	Dec. 30, 2022
Bermuda Re Citibank LOC Facility [Member]
Line of Credit Facility [Line Items]
Commitment	$ 370,000,000	$ 370,000,000
In Use	333,000,000	329,000,000
Bermuda Re Citibank LOC Facility One [Member]
Line of Credit Facility [Line Items]
Commitment	230,000,000	230,000,000
In Use	$ 1,000,000	$ 4,000,000
Date of Expiry	Jan. 21, 2023	Feb. 28, 2022
Bermuda Re Citibank LOC Facility Two [Member]
Line of Credit Facility [Line Items]
In Use	$ 4,000,000	$ 1,000,000
Date of Expiry	Feb. 28, 2023	Mar. 01, 2022
Bermuda Re Citibank LOC Facility Three [Member]
Line of Credit Facility [Line Items]
In Use	$ 1,000,000	$ 1,000,000
Date of Expiry	Mar. 01, 2023	Nov. 24, 2022
Bermuda Re Citibank LOC Facility Four [Member]
Line of Credit Facility [Line Items]
In Use	$ 1,000,000	$ 217,000,000
Date of Expiry	Aug. 15, 2023	Dec. 31, 2022
Bermuda Re Citibank LOC Facility Five [Member]
Line of Credit Facility [Line Items]
In Use	$ 3,000,000	$ 1,000,000
Date of Expiry	Sep. 23, 2023	Aug. 15, 2023
Bermuda Re Citibank LOC Facility Six [Member]
Line of Credit Facility [Line Items]
In Use	$ 212,000,000	$ 1,000,000
Date of Expiry	Dec. 31, 2023	Sep. 23, 2023
Bermuda Re Citibank LOC Facility Seven [Member]
Line of Credit Facility [Line Items]
In Use	$ 18,000,000	$ 23,000,000
Date of Expiry	Dec. 30, 2026	Dec. 30, 2025
Bermuda Re Citibank LOC Facility - Uncommitted [Member]
Line of Credit Facility [Line Items]
Commitment	$ 140,000,000	$ 140,000,000
In Use	$ 87,000,000	$ 84,000,000
Date of Expiry	Dec. 31, 2023	Dec. 31, 2022
Bermuda Re Bayerische Landesbank Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment	$ 200,000,000	$ 200,000,000
In Use	$ 183,000,000	$ 155,000,000
Date of Expiry	Dec. 31, 2023	Dec. 31, 2022
Bermuda Re Bayerische Landesbank Unsecured Bilateral Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment	$ 150,000,000
In Use	$ 150,000,000
Date of Expiry	Dec. 31, 2023
Bermuda Re Lloyd's Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment	$ 250,000,000	$ 50,000,000
In Use	186,000,000	46,000,000
Bermuda Re Lloyd's Bank Credit Facility - Committed [Member]
Line of Credit Facility [Line Items]
Commitment	50,000,000	50,000,000
In Use	$ 50,000,000	$ 46,000,000
Date of Expiry	Dec. 31, 2023	Dec. 31, 2022
Bermuda Re Lloyd's Bank Credit Facility - Uncommitted [Member]
Line of Credit Facility [Line Items]
Commitment	$ 200,000,000
In Use	$ 136,000,000
Date of Expiry	Dec. 31, 2023
Bermuda Re Barclays Bilateral Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment	$ 200,000,000	$ 200,000,000
In Use	$ 179,000,000	$ 186,000,000
Date of Expiry	Dec. 31, 2023	Dec. 31, 2022
Bermuda Re Nordea Bank Letter of Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment	$ 300,000,000
In Use	150,000,000
Bermuda Re Nordea Bank Letter of Credit Facility - Committed [Member]
Line of Credit Facility [Line Items]
Commitment	200,000,000
In Use	$ 50,000,000
Date of Expiry	Dec. 31, 2023
Bermuda Re Nordea Bank Letter of Credit Facility - Uncommitted [Member]
Line of Credit Facility [Line Items]
Commitment	$ 100,000,000
In Use	$ 100,000,000
Date of Expiry	Dec. 31, 2023

Senior Notes (Schedule Of Outst

Senior Notes (Schedule Of Outstanding Senior Notes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Consolidated Balance Sheet Amount	$ 2,347,000,000	$ 2,346,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount	2,400,000,000
Consolidated Balance Sheet Amount	2,347,000,000	2,346,000,000
Market Value	$ 1,647,000,000	2,542,000,000
Senior Notes [Member] \| 4.868% Senior Notes due 6/1/2044 [Member]
Debt Instrument [Line Items]
Date issued	Jun. 05, 2014
Date due	Jun. 01, 2044
Original Principal Amount	$ 400,000,000
Consolidated Balance Sheet Amount	397,000,000	397,000,000
Market Value	$ 343,000,000	504,000,000
Debt instrument, stated interest rate	4.868%
Senior Notes [Member] \| 3.5% Senior Notes due 10/15/2050 [Member]
Debt Instrument [Line Items]
Date issued	Oct. 07, 2020
Date due	Oct. 15, 2050
Original Principal Amount	$ 1,000,000,000
Consolidated Balance Sheet Amount	981,000,000	980,000,000
Market Value	$ 677,000,000	1,055,000,000
Debt instrument, stated interest rate	3.50%
Senior Notes [Member] \| 3.125% Senior Notes due 10/15/2052 [Member]
Debt Instrument [Line Items]
Date issued	Oct. 04, 2021
Date due	Oct. 15, 2052
Original Principal Amount	$ 1,000,000,000
Consolidated Balance Sheet Amount	969,000,000	969,000,000
Market Value	$ 627,000,000	$ 983,000,000
Debt instrument, stated interest rate	3.125%

Senior Notes (Schedule Of Inter

Senior Notes (Schedule Of Interest Expense Incurred In Connection With Senior Notes) (Details) - Senior Notes [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Interest expense incurred	$ 86	$ 62	$ 28
4.868% Senior Notes due 6/1/2044 [Member]
Debt Instrument [Line Items]
Interest expense incurred	$ 19	19	19
Debt instrument, stated interest rate	4.868%
3.5% Senior Notes due 10/15/2050 [Member]
Debt Instrument [Line Items]
Interest expense incurred	$ 35	35	8
Debt instrument, stated interest rate	3.50%
3.125% Senior Notes due 10/15/2052 [Member]
Debt Instrument [Line Items]
Interest expense incurred	$ 32	$ 8
Debt instrument, stated interest rate	3.125%

Long Term Subordinated Notes (N

Long Term Subordinated Notes (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Item	Feb. 14, 2023
Subordinated Debt [Member]
Debt Instrument [Line Items]
Outstanding debt reduction	$ 6
Subordinated Debt [Member] \| 6.6 % Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	6.60%
Interest payment commencement date	Nov. 15, 2007
Basis spread on variable rate	2.385%
Right to defer interest, number of occasions \| Item	1
Right to defer interest on one or more occasions for up to number of consecutive years	10 years
Redemption date	May 01, 2047
Percentage of principal amount required for redemption	100%
Debt instrument, maturity date	May 01, 2067
Gain on repurchase and retirement of debt	$ 1
Subordinated Debt [Member] \| 6.6 % Long Term Subordinated Notes [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Reset quarterly interest rate		6.99%
Subordinated Debt [Member] \| 6.6 % Long Term Subordinated Notes [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest payment date	May 3, 2007
Subordinated Debt [Member] \| 6.6 % Long Term Subordinated Notes [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest payment date	May 14, 2017
Senior Notes [Member] \| 4.868% Senior Notes due 6/1/2044 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.868%
Debt instrument, maturity date	Jun. 01, 2044
Senior Notes [Member] \| 3.5% Senior Notes due 10/15/2050 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	3.50%
Debt instrument, maturity date	Oct. 15, 2050
Senior Notes [Member] \| 3.125% Senior Notes due 10/15/2052 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	3.125%
Debt instrument, maturity date	Oct. 15, 2052

Long Term Subordinated Notes (S

Long Term Subordinated Notes (Schedule Of Outstanding Fixed To Floating Rate Long Term Subordinated Notes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Consolidated balance sheet amount	$ 218,000,000	$ 224,000,000
Subordinated Debt [Member] \| 6.6 % Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Date Issued	Apr. 26, 2007
Original Principal Amount	$ 400,000,000
Maturity Date	May 01, 2067
Consolidated balance sheet amount	$ 218,000,000	224,000,000
Market Value	$ 187,000,000	$ 216,000,000
Scheduled [Member] \| Subordinated Debt [Member] \| 6.6 % Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Maturity Date	May 15, 2037

Long Term Subordinated Notes _2

Long Term Subordinated Notes (Schedule Of Interest Expense Incurred In Connection With Long Term Subordinated Notes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Subordinated Debt [Member]
Debt Instrument [Line Items]
Interest expense incurred	$ 9	$ 6	$ 8

Collateralized Reinsurance An_3

Collateralized Reinsurance And Trust Agreements (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Apr. 01, 2018	Dec. 31, 2022	Dec. 31, 2021
Effects of Reinsurance [Line Items]
Amount on deposit in trust accounts		$ 2,400	$ 1,700
Restricted cash		122	190
Preferred shares
Mt Logan Re [Member]
Effects of Reinsurance [Line Items]
Percentage of voting common shares owned by Group		100%
Retrocede amount	$ 269
Cash transferred	252
Mt Logan Re [Member] \| Minimum [Member]
Effects of Reinsurance [Line Items]
Accident year		2002
Mt Logan Re [Member] \| Maximum [Member]
Effects of Reinsurance [Line Items]
Accident year		2015
Liability retroceded	$ 319

Collateralized Reinsurance An_4

Collateralized Reinsurance And Trust Agreements (Premiums And Losses Ceded By The Company To Affiliate) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Effects of Reinsurance [Line Items]
Ceded written premiums	$ 1,608	$ 1,604	$ 1,365
Assumed written premiums	9,350	9,062	7,264
Mt Logan Re [Member]
Effects of Reinsurance [Line Items]
Ceded written premiums	201	341	303
Ceded earned premiums	206	333	306
Ceded losses and LAE	191	282	241
Assumed written premiums	5	12	19
Assumed earned premiums	$ 5	$ 12	$ 19

Collateralized Reinsurance An_5

Collateralized Reinsurance And Trust Agreements (Summary of Collateralized Reinsurance Agreements) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Effects of Reinsurance [Line Items]
Limit	$ 1,608	$ 1,604	$ 1,365
Kilimanjaro Re Limited [Member]
Effects of Reinsurance [Line Items]
Limit	$ 2,063
Kilimanjaro Re Limited [Member] \| Series 2018-1 Class A-2 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 30, 2018
Expiration Date	May 05, 2023
Limit	$ 63
Kilimanjaro Re Limited [Member] \| Series 2018-1 Class B-2 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 30, 2018
Expiration Date	May 05, 2023
Limit	$ 200
Kilimanjaro Re Limited [Member] \| Series 2019-1 Class A-1 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Dec. 12, 2019
Expiration Date	Dec. 19, 2023
Limit	$ 150
Kilimanjaro Re Limited [Member] \| Series 2019-1 Class B-1 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Dec. 12, 2019
Expiration Date	Dec. 19, 2023
Limit	$ 275
Kilimanjaro Re Limited [Member] \| Series 2019-1 Class A-2 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Dec. 12, 2019
Expiration Date	Dec. 19, 2024
Limit	$ 150
Kilimanjaro Re Limited [Member] \| Series 2019-1 Class B-2 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Dec. 12, 2019
Expiration Date	Dec. 19, 2024
Limit	$ 275
Kilimanjaro Re Limited [Member] \| Series 2021-1 Class A-1 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 08, 2021
Expiration Date	Apr. 21, 2025
Limit	$ 150
Kilimanjaro Re Limited [Member] \| Series 2021-1 Class B-1 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 08, 2021
Expiration Date	Apr. 21, 2025
Limit	$ 85
Kilimanjaro Re Limited [Member] \| Series 2021-1 Class C-1 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 08, 2021
Expiration Date	Apr. 21, 2025
Limit	$ 85
Kilimanjaro Re Limited [Member] \| Series 2021-1 Class A-2 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 08, 2021
Expiration Date	Apr. 20, 2026
Limit	$ 150
Kilimanjaro Re Limited [Member] \| Series 2021-1 Class B-2 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 08, 2021
Expiration Date	Apr. 20, 2026
Limit	$ 90
Kilimanjaro Re Limited [Member] \| Series 2021-1 Class C-2 [Member]
Effects of Reinsurance [Line Items]
Effective Date	Apr. 08, 2021
Expiration Date	Apr. 20, 2026
Limit	$ 90
Kilimanjaro Re Limited [Member] \| Series 2022-1 Class A [Member]
Effects of Reinsurance [Line Items]
Effective Date	Jun. 22, 2022
Expiration Date	Jun. 22, 2025
Limit	$ 300

Collateralized Reinsurance An_6

Collateralized Reinsurance And Trust Agreements (Schedule of Proceeds from Issuance of Notes Held in Reinsurance Trusts) (Details) - Kilimanjaro Re Limited [Member] $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Effects of Reinsurance [Line Items]
Amount	$ 2,063
Series 2018-1 Class A-2 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 30, 2018
Maturity Date	May 05, 2023
Amount	$ 63
Series 2018-1 Class B-2 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 30, 2018
Maturity Date	May 05, 2023
Amount	$ 200
Series 2019-1 Class A-1 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Dec. 12, 2019
Maturity Date	Dec. 19, 2023
Amount	$ 150
Series 2019-1 Class B-1 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Dec. 12, 2019
Maturity Date	Dec. 19, 2023
Amount	$ 275
Series 2019-1 Class A-2 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Dec. 12, 2019
Maturity Date	Dec. 19, 2024
Amount	$ 150
Series 2019-1 Class B-2 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Dec. 12, 2019
Maturity Date	Dec. 19, 2024
Amount	$ 275
Series 2021-1 Class A-1 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 08, 2021
Maturity Date	Apr. 21, 2025
Amount	$ 150
Series 2021-1 Class B-1 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 08, 2021
Maturity Date	Apr. 21, 2025
Amount	$ 85
Series 2021-1 Class C-1 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 08, 2021
Maturity Date	Apr. 21, 2025
Amount	$ 85
Series 2021-1 Class A-2 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 08, 2021
Maturity Date	Apr. 20, 2026
Amount	$ 150
Series 2021-1 Class B-2 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 08, 2021
Maturity Date	Apr. 20, 2026
Amount	$ 90
Series 2021-1 Class C-2 [Member]
Effects of Reinsurance [Line Items]
Issue Date	Apr. 08, 2021
Maturity Date	Apr. 20, 2026
Amount	$ 90
Series 2022-1 Class A [Member]
Effects of Reinsurance [Line Items]
Issue Date	Jun. 22, 2022
Maturity Date	Jun. 22, 2025
Amount	$ 300

Leases (Supplemental Informatio

Leases (Supplemental Information Relating to Operating Leases) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Lease expense incurred: Operating lease cost	$ 28	$ 27
Operating lease right of use assets	$ 128	$ 139
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets	Other Assets
Operating lease liabilities	$ 147	$ 158
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Operating cash flows from operating leases	$ (20)	$ (18)
Weighted average remaining operating lease term	10 years 9 months 18 days	11 years 7 months 6 days
Weighted average discount rate on operating leases	4.08%	4.08%

Leases (Maturities of Lease Lia

Leases (Maturities of Lease Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
2023	$ 21
2024	21
2025	18
2026	16
2027	16
Thereafter	95
Undiscounted lease payments	187
Less: present value adjustment	40
Total operating lease liability	$ 147	$ 158

Leases (Maturities of Lease L_2

Leases (Maturities of Lease Liabilities) (Details) (Alternative Calculation) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Undiscounted lease payments	$ 187
Less: present value adjustment	40
Total operating lease liability	$ 147	$ 158

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Accrual withholding taxes, percent	5%
Income tax rate	21%	21%	21%	21%	21%	35%
Income tax expense (benefit)	$ (9,000,000)	$ 167,000,000	$ 71,000,000
Increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions	0	0	0
Deferred tax assets, valuation allowance	25,000,000	18,000,000
Foreign tax credits	3,000,000	22,000,000
Tax benefits related to restricted stock vestings and stock options exercises	2,000,000	2,000,000	3,000,000
Tax benefits related to payment of dividends on restricted stock	600,000	600,000	600,000
Unrealized losses on available for sale fixed maturity securities	218,000,000
CARES Act [Member]
Income Tax Contingency [Line Items]
Income tax expense (benefit)	33,000,000
Net refund	183,000,000
Branch Basket [Member]
Income Tax Contingency [Line Items]
Foreign tax credits	$ 3,000,000	29,000,000
Tax credit carryforward expiration	Dec. 31, 2030
Her Majestys Revenue And Customs H M R C [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 16,000,000
Swiss Federal Tax Administration F T A [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 5,000,000
Tax credit carryforward expiration	Dec. 31, 2028
Revenue Commissioners Ireland [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 4,000,000
Internal Revenue Service I R S [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	3,000,000
Foreign Country [Member]
Income Tax Contingency [Line Items]
Income tax expense (benefit)	5,000,000	$ 5,000,000
Increase (decrease) in valuation allowance	(7,000,000)
Tax Year 2015 [Member]
Income Tax Contingency [Line Items]
Net refund	(2,000,000)
Tax Year 2016 [Member]
Income Tax Contingency [Line Items]
Net refund	$ (5,000,000)

Income Taxes (Components Of The

Income Taxes (Components Of The Provision) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes [Abstract]
U.S.	$ 76	$ 124	$ (108)
Non-U.S.	5	2	3
Total current tax expense (benefit)	81	126	(105)
U.S.	(90)	38	179
Non-U.S.		3	(3)
Total deferred tax expense (benefit)	(90)	41	176
Total income tax provision	$ (9)	$ 167	$ 71

Income Taxes (Reconciliation Of

Income Taxes (Reconciliation Of The Difference Between The Provision For Income Taxes And The Expected Tax Provision At The Weighted Average Tax Rate) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes [Line Items]
Underwriting gain (loss)	$ 477	$ 224	$ (254)
Net investment income	830	1,165	642
Net realized capital gains (losses)	(455)	258	268
Corporate expenses	(61)	(68)	(41)
Interest, fee and bond issue cost amortization expense	(101)	(70)	(36)
Other income (expense)	(102)	37	6
INCOME (LOSS) BEFORE TAXES	588	1,546	585
Increase (decrease) in taxes resulting from:
Total income tax provision	(9)	167	71
Domestic [Member]
Income Taxes [Line Items]
Underwriting gain (loss)	(81)	(83)	24
Net investment income	607	708	340
Net realized capital gains (losses)	(426)	266	235
Net derivative gain (loss)
Corporate expenses	(26)	(33)	(16)
Interest, fee and bond issue cost amortization expense	(101)	(70)	(36)
Other income (expense)	(6)	23	(15)
INCOME (LOSS) BEFORE TAXES	(32)	811	532
Expected tax provision at the applicable statutory rate(s)	(9)	170	112
Increase (decrease) in taxes resulting from:
Tax exempt income	(4)	(4)	(4)
Dividend received deduction	(3)	(1)	(1)
Proration	1	1	1
Affiliated preferred stock dividends	7	7	7
Creditable foreign premium tax	(11)	(13)	(12)
Tax audit settlement
Share based compensation tax benefits formerly in APIC	(3)	(2)	(3)
Impact of CARES Act			(32)
Valuation allowance
Change in uncertain tax positions
Other	5	3	3
Total income tax provision	(14)	161	71
Non-U.S. [Member]
Income Taxes [Line Items]
Underwriting gain (loss)	558	307	(278)
Net investment income	223	457	303
Net realized capital gains (losses)	(29)	(8)	33
Net derivative gain (loss)		3	2
Corporate expenses	(35)	(34)	(25)
Interest, fee and bond issue cost amortization expense			(1)
Other income (expense)	(96)	11	20
INCOME (LOSS) BEFORE TAXES	620	735	53
Expected tax provision at the applicable statutory rate(s)		14	(10)
Increase (decrease) in taxes resulting from:
Tax exempt income
Dividend received deduction
Proration
Affiliated preferred stock dividends
Creditable foreign premium tax
Tax audit settlement
Share based compensation tax benefits formerly in APIC
Impact of CARES Act
Valuation allowance	5	(10)	15
Change in uncertain tax positions
Other		1	(5)
Total income tax provision	$ 5	$ 5

Income Taxes (Net Deferred Inco

Income Taxes (Net Deferred Income Tax Assets/(Liabilities)) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Income Taxes [Abstract]
Net unrealized investment losses	$ 218
Loss reserves	154	130
Unearned premium reserves	114	108
Lease liability	29	31
Net operating loss carryforward	28	20
Unrealized foreign currency losses	24	4
Investment impairments	12	6
Net unrealized losses on benefit plans	9	13
Equity compensation	8	8
Uncollectible reinsurance reserves	3	3
Foreign tax credits	3	22
Other assets	10	9
Total deferred tax assets	611	354
Deferred acquisition costs	105	99
Partnership investments	56	57
Right of use asset	25	27
Depreciation	16	4
Net fair value income	7	98
Benefit plan asset	3	2
Net unrealized investment gains		37
Other liabilities	8	6
Total deferred tax liabilities	220	329
Net deferred tax assets	392	25
Less: Valuation allowance	(25)	(18)
Total net deferred tax assets	$ 367	$ 7

Reinsurance (Premiums Written A

Reinsurance (Premiums Written And Earned And Incurred Losses And LAE) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reinsurance [Abstract]
Written premiums: Direct	$ 4,602	$ 3,988	$ 3,218
Written premiums: Assumed	9,350	9,062	7,264
Written premiums: Ceded	(1,608)	(1,604)	(1,365)
Net written premiums	12,344	11,446	9,117
Premiums earned: Direct	4,218	3,589	3,028
Premiums earned: Assumed	9,082	8,315	7,055
Premiums earned: Ceded	(1,513)	(1,498)	(1,401)
Net premiums earned	11,787	10,406	8,682
Incurred losses and LAE: Direct	2,804	2,385	2,141
Incurred losses and LAE: Assumed	6,285	5,741	5,164
Incurred losses and LAE: Ceded	(988)	(735)	(754)
Net incurred losses and LAE	$ 8,100	$ 7,391	$ 6,551

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) (Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total, Before Tax	$ (2,285)	$ (577)	$ 556
Total, Tax Effect	277	54	(49)
Total, Net of Tax	(2,008)	(523)	507
URA(D) On Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax	(2,332)	(548)	463
Tax Effect	295	59	(40)
Net of Tax	(2,037)	(488)	423
Reclassification, Before Tax	107	5	2
Reclassification, Tax Effect	(18)	(2)	(6)
Reclassification, Net of Tax	89	4	(3)
Total, Net of Tax	(1,948)	(485)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax	(82)	(64)	90
Tax Effect	5	2	(4)
Net of Tax	(77)	(62)	86
Total, Net of Tax	(77)	(62)
Benefit Plan Net Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax	18	22	(7)
Tax Effect	(4)	(5)	1
Net of Tax	15	17	(6)
Reclassification, Before Tax	3	8	8
Reclassification, Tax Effect	(1)	(2)	(2)
Reclassification, Net of Tax	2	6	$ 6
Total, Net of Tax	$ 17	$ 23

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) (Reclassification From Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense (benefit)	$ 9	$ (167)	$ (71)
NET INCOME (LOSS)	597	1,379	$ 514
URA(D) On Securities [Member] \| Reclassification From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net realized capital gains (losses)	107	5
Income tax expense (benefit)	(18)	(2)
NET INCOME (LOSS)	89	4
Benefit Plan Net Gain (Loss) [Member] \| Reclassification From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other underwriting expenses	3	8
Income tax expense (benefit)	(1)	(2)
NET INCOME (LOSS)	$ 2	$ 6

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) (Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax, In The Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 10,139	$ 9,726
Current period change	(2,008)	(523)	$ 507
Balance	8,441	10,139	9,726
URA(D) On Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	239	724
Current period change	(1,948)	(485)
Balance	(1,709)	239	724
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(177)	(115)
Current period change	(77)	(62)
Balance	(254)	(177)	(115)
Benefit Plan Net Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(50)	(74)
Current period change	17	23
Balance	(33)	(50)	(74)
Accumulated Other Comprehensive Income (Loss), Net of Deferred Income Taxes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	12	535	28
Current period change	(2,008)	(523)	507
Balance	$ (1,996)	$ 12	$ 535

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - USD ($)	12 Months Ended
Employee Benefit Plans (Narrative) (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2030
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 6,000,000	$ 4,000,000	$ 7,000,000
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average discount rate used to determine net periodic benefit cost	2.86%	2.55%	3.28%
Rate of compensation increase to determine the net periodic benefit cost	4%	4%	4%
Expected long-term rate of return on plan assets	6.75%	7%	7%
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation	5.25%	2.86%	2.55%
Company contributions	$ 6,000,000	$ 4,000,000
Defined Benefit Pension Plan [Member] \| U.S. Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plans, employer contribution plans, employer contribution percentage, maximum	3%
Defined contribution plans, employer contribution percentage, for new hires, minimum	3%
Defined contribution plans, employer contribution percentage, for new hires, maximum	8%
Defined Contribution Plan Employer Contribution Percentage Vested After Three Years	100%
Incurred expenses	$ 18,000,000	15,000,000	$ 14,000,000
Defined Benefit Pension Plan [Member] \| Non-U.S. Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan employer contribution percentage for branch offices, minimum	4.30%
Defined contribution plan employer contribution percentage for branch offices, maximum	39.50%
Incurred expenses	$ 4,000,000	3,000,000	$ 3,000,000
Defined Benefit Pension Plan [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	74%
Defined Benefit Pension Plan [Member] \| Fixed Maturities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	24%
Defined Benefit Pension Plan [Member] \| Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	1%
Defined Benefit Pension Plan [Member] \| Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	1%
Defined Benefit Pension Plan [Member] \| Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentage	70%
Defined Benefit Pension Plan [Member] \| Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentage	30%
Defined Benefit Pension Plan [Member] \| Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Private equity limited partnerships	$ 1,500,000	2,600,000
Company contributions	$ 0	$ 0
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average discount rate used to determine net periodic benefit cost	2.86%	2.55%	3.28%
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation	5.25%	2.86%	2.55%
Company contributions
Healthcare inflation rate	7%
Incurred expenses	$ 1,000,000	$ 1,000,000	$ 1,000,000
Post-Retirement Plan [Member] \| Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Healthcare inflation rate				4.75%

Employee Benefit Plans (Summary

Employee Benefit Plans (Summary Of Contributions To Defined Benefit Pension Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Employee Benefit Plans [Abstract]
Company contributions	$ 6	$ 4	$ 7

Employee Benefit Plans (Summa_2

Employee Benefit Plans (Summary Of Pension Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension expense	$ (2)	$ 3	$ 8

Employee Benefit Plans (Summa_3

Employee Benefit Plans (Summary Of Status Of Plan) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Actual contributions during the year	$ 6	$ 4	$ 7
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	403	404
Service cost	9	11	10
Interest cost	10	8	10
Actuarial (gain)/loss	(115)	(9)
Curtailment
Benefits paid	(15)	(12)
Projected benefit obligation at end of year	291	403	404
Fair value of plan assets at beginning of year	377	354
Actual return on plan assets	(83)	31
Actual contributions during the year	6	4
Administrative expenses paid
Benefits paid	(15)	(12)
Fair value of plan assets at end of year	285	377	354
Funded status at end of year	(6)	(25)
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	31	35
Service cost	1	1	1
Interest cost	1	1	1
Amendments
Actuarial (gain)/loss	(10)	(6)
Benefits paid
Projected benefit obligation at end of year	21	31	35
Fair value of plan assets at beginning of year
Actual contributions during the year
Benefits paid
Fair value of plan assets at end of year
Funded status at end of year	$ (21)	$ (31)

Employee Benefit Plans (Amounts

Employee Benefit Plans (Amounts Recognized In The Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets (due beyond one year)	$ 1
Other liabilities (due within one year)	(1)	(1)
Other liabilities (due beyond one year)	(6)	(24)
Net amount recognized in the consolidated balance sheets	(6)	(25)
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other liabilities (due within one year)	(1)	(1)
Other liabilities (due beyond one year)	(21)	(30)
Net amount recognized in the consolidated balance sheets	$ (21)	$ (31)

Employee Benefit Plans (Amoun_2

Employee Benefit Plans (Amounts Not Yet Reflected In Net Periodic Benefit Cost And Included In Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated income (loss)	$ (56)	$ (68)
Accumulated other comprehensive income (loss)	(56)	(68)	$ (92)
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated income (loss)	13	2
Accumulated prior service credit (cost)	1	2
Accumulated other comprehensive income (loss)	$ 14	$ 4	$ (2)

Employee Benefit Plans (Other C

Employee Benefit Plans (Other Changes In Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other comprehensive income (loss) at December 31, prior year	$ (68)	$ (92)
Net gain (loss) arising during period	(7)	(15)
Actuarial loss (gain)	4	9
Curtailment loss recognized
Other comprehensive income (loss) at December 31, current year	(56)	(68)
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other comprehensive income (loss) at December 31, prior year	4	(2)
Net gain (loss) arising during period	10	6
Prior Service credit (cost) arising during period
Actuarial loss (gain)
Prior service cost		(1)
Other comprehensive income (loss) at December 31, current year	$ 14	$ 4

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9	$ 11	$ 10
Interest cost	10	8	10
Expected return on assets	(25)	(24)	(21)
Amortization of net (income) loss	4	8	9
Settlements	1		1
Net periodic benefit cost	(2)	3	8
Other comprehensive income (loss) attributable to change from prior year	(12)	(24)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(14)	(21)
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	1
Interest cost	1	1	1
Amortization of prior service cost		(1)	(1)
Expected return on assets
Net periodic benefit cost	1	1	$ 1
Other comprehensive income (loss) attributable to change from prior year	(10)	(5)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (9)	$ (4)

Employee Benefit Plans (Summa_4

Employee Benefit Plans (Summary Of Accumulated Benefit Obligation) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 264	$ 352
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	258	339
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 6	$ 12

Employee Benefit Plans (Project

Employee Benefit Plans (Projected Benefit Obligations In Excess Of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 284	$ 390
Fair value of plan assets	285	377
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	6	12
Fair value of plan assets

Employee Benefit Plans (Accumul

Employee Benefit Plans (Accumulated Benefit Obligations In Excess Of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation
Fair value of plan assets
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	6	12
Fair value of plan assets

Employee Benefit Plans (Expecte

Employee Benefit Plans (Expected Benefit Payments) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2023	$ 13
2024	14
2025	14
2026	15
2027	17
Next 5 years	100
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2023	1
2024	1
2025	1
2026	1
2027	1
Next 5 years	$ 7

Employee Benefit Plans (Fair Va

Employee Benefit Plans (Fair Value Measurement Levels For Qualified Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value	$ 4	$ 3
Total	$ 283	$ 375
Percent Of Fixed Income Funds In U.S. Securities	70%	70%
Percent of fixed income funds in international securities	30%	30%
Percent of equities mutual funds in US equities	50%	50%
Percent of equities mutual funds in international equities	50%	50%
Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	$ 68	$ 85
Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	211	287
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value	4	3
Total	283	375
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] \| Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	68	85
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] \| Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	211	287
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value
Total
Significant Other Observable Inputs (Level 2) [Member] \| Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value
Significant Other Observable Inputs (Level 2) [Member] \| Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value
Total
Significant Unobservable Inputs (Level 3) [Member] \| Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value
Significant Unobservable Inputs (Level 3) [Member] \| Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value

Employee Benefit Plans (Post-Re

Employee Benefit Plans (Post-Retirement Benefit Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Incurred expenses	$ 1	$ 1	$ 1

Dividend Restrictions And Sta_3

Dividend Restrictions And Statutory Financial Information (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Dividend Restrictions And Statutory Financial Information [Line Items]
Minimum solvency margin	$ 0.3
Prior approval of the Bermuda Monetary Authority is required for dividend payments, if percentage exceeds in prior-year end total statutory capital	0.25
Dividend payment restrictions, period in months	12 months
Dividend payment restrictions, percentage of statutory surplus required	10%
Minimum percent of total adjusted capital	200%
Bermuda Re [Member]
Dividend Restrictions And Statutory Financial Information [Line Items]
Statutory capital and surplus	$ 2,800	$ 3,100
Statutory net income (loss)	$ 603	681	$ 223
Target capital level, percent of the enhanced capital requirement	120%
Everest Re [Member]
Dividend Restrictions And Statutory Financial Information [Line Items]
Available for payment of dividends in 2016 without need for prior regulatory approval	$ 555
Statutory capital and surplus	5,600	5,800
Statutory net income (loss)	$ 294	$ 336	$ (595)

Dividend Restrictions And Sta_4

Dividend Restrictions And Statutory Financial Information (Regulatory Targeted Capital And The Actual Statutory Capital) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum percent of total adjusted capital	200%
Bermuda Re [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Regulatory targeted capital		$ 2,169
Actual capital	2,759	3,184
Everest Re [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Regulatory targeted capital	3,353	2,960
Actual capital	$ 5,553	$ 5,717

Commitments And Contingencies_2

Commitments And Contingencies (Summary Of Estimated Cost To Replace Annuities For Contingent Liability) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
The Prudential [Member]
Loss Contingencies [Line Items]
Estimated cost to replace annuities	$ 137	$ 138
Unaffiliated Life Insurance Company [Member]
Loss Contingencies [Line Items]
Estimated cost to replace annuities	$ 34	$ 35

Share-Based Compensation Plan_2

Share-Based Compensation Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions						12 Months Ended			132 Months Ended
	Nov. 10, 2022	Sep. 08, 2022	May 10, 2022	Feb. 24, 2022	Feb. 23, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period
Share-based compensation expense						$ 45	$ 43	$ 39
Income tax benefit recorded						4	8	7
Additional paid-in capital due to tax benefit from dividends on restricted shares						0.6	0.6	0.6
Unrecognized compensation cost						97
Tax benefit from stock options vested						9	8	9
Fair value of shares vested						$ 40	$ 38	$ 39
Unrecognized compensation cost expected to be recognized over a weighted-average period, years						3 years 3 months 18 days
2020 Employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized						1,400,000			1,400,000
Remaining shares						996,076
2009 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized						37,439			37,439
Remaining shares						34,957
2003 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized						500,000			500,000
Remaining shares						299,461
Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares, issued						774	506	593	774
Aggregate value of issuances						$ 0.2	$ 0.1	$ 0.1
Options and Restricted Shares [Member] \| 2020 Employee Plan, 2010 Employee Plan and 2002 Employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years						5 years
Options and Restricted Shares [Member] \| 2020 Employee Plan, 2010 Employee Plan and 2002 Employee Plan [Member] \| Share Based Compensation Award Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage						20%
Options and Restricted Shares [Member] \| 2009 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period, in years						10 years
Options and Restricted Shares [Member] \| 2003 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years						3 years
Options and Restricted Shares [Member] \| 2003 Director Plan [Member] \| Share Based Compensation Award Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage						33%
Options and Restricted Shares [Member] \| Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock acquired for net-share settlement						69,833	79,308	66,289
Common stock values of shares acquired for net-share settlement						$ 21	$ 18	$ 18
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period						203,598
Weighted-average grant-date fair value of options granted	$ 323.085	$ 283.7225	$ 280.98	$ 287.9425	$ 301.535
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period					18,340
Weighted-average grant-date fair value of options granted					$ 301.5350
Performance Shares [Member] \| 2020 Employee Plan and 2010 Employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years						3 years
Performance Shares [Member] \| 2020 Employee Plan and 2010 Employee Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of stock per unit awarded						1.75
Performance Shares [Member] \| 2020 Employee Plan and 2010 Employee Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of stock per unit awarded
Performance Shares [Member] \| 2020 Employee Plan and 2010 Employee Plan [Member] \| Share Based Compensation Award Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage						100%
Performance Shares [Member] \| Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock acquired for net-share settlement						6,175	3,104	2,587
Common stock values of shares acquired for net-share settlement						$ 1.7	$ 0.8	$ 0.7
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period						0			0
Aggregate intrinsic value of options exercised						$ 10	11	10	$ 10
Cash received from the exercised share options						4	6	5
Tax benefit from options exercised						$ 2	$ 3	$ 2

Share-Based Compensation Plan_3

Share-Based Compensation Plans (Company's Shareholder Approved Plans) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Compensation Plans [Abstract]
Outstanding at January 1, Shares	49,028	116,871	170,704
Granted, Shares
Exercised, Shares	49,028	67,843	53,833
Forfeited/Cancelled/Expired, Shares
Outstanding at December 31, Shares		49,028	116,871
Exercisable at December 31, Shares		49,028	116,871
Outstanding at January 1, Weighted-Average Exercise Price/Share	$ 88.52	$ 87.87	$ 87.18
Granted - Weighted- Average Exercise Price/Share	0
Exercised, Weighted- Average Exercise Price/Share	88.52	87.39	85.69
Forfeited/Cancelled/Expired, Weighted- Average Exercise Price/Share
Outstanding at December 31, Weighted-Average Exercise Price/Share		88.52	87.87
Exercisable at December 31, Weighted-Average Exercise Price/Share		$ 88.52	$ 87.87
Outstanding at December 31, Weighted-Average Remaining Contractual Term		2 months 12 days	8 months 12 days
Exercisable at December 31, Weighted-Average Remaining Contractual Term		2 months 12 days	8 months 12 days
Outstanding at December 31, Aggregate Intrinsic Value		$ 9	$ 17
Exercisable at December 31, Aggregate Intrinsic Value		$ 9	$ 17

Share-Based Compensation Plan_4

Share-Based Compensation Plans (Summary Of Company's Non-Vested Shares And Changes) (Details) - Restricted Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1, Shares	496,094	483,427	495,137
Granted, Shares	203,598	213,901	200,929
Vested, Shares	162,579	158,735	175,413
Forfeited, Shares	57,483	42,499	37,226
Outstanding at December 31, Shares	479,630	496,094	483,427
Outstanding at January 1, Weighted Average Grant Date Fair Value	$ 247.76	$ 246.60	$ 228.02
Granted, Weighted Average Grant Date Fair Value	300.38	243.51	269.86
Vested, Weighted Average Grant Date Fair Value	246.41	238.67	220.88
Forfeited, Weighted Average Grant Date Fair Value	262.28	247.02	246.20
Outstanding at December 31, Weighted Average Grant Date Fair Value	$ 268.82	$ 247.76	$ 246.60

Share-Based Compensation Plan_5

Share-Based Compensation Plans (Company's Non-Vested Performance Share Unit Awards) (Details) - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1, Shares	50,495	38,891	34,850
Granted, Shares	18,340	22,205	16,120
Increase/(Decrease) on vesting units due to performance, Shares	3,028	(800)	(2,227)
Vested, Shares	15,919	9,801	6,157
Forfeited, Shares	1,083		3,695
Outstanding at December 31, Shares	54,861	50,495	38,891
Outstanding at January 1, Weighted Average Grant Date Fair Value
Granted, Weighted Average Grant Date Fair Value	301.54	242.24	277.15
Vested, Weighted Average Grant Date Fair Value	274.37	242.24	277.15
Forfeited, Weighted Average Grant Date Fair Value
Outstanding at December 31, Weighted Average Grant Date Fair Value

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details)	12 Months Ended
Segment Reporting (Narrative) (Details)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting [Abstract]
Percentage threshold of Company revenue not exceeded by any other country	20%	20.50%	20.10%

Segment Reporting (Schedule Of

Segment Reporting (Schedule Of Underwriting Results For Operating Segments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Gross written premium	$ 13,952	$ 13,050	$ 10,482
Net written premiums	12,344	11,446	9,117
Premiums earned	11,787	10,406	8,682
Incurred losses and LAE	8,100	7,391	6,551
Commission and brokerage	2,528	2,209	1,873
Other underwriting expenses	682	583	511
Underwriting gain (loss)	477	224	(254)
Net investment income	830	1,165	642
Net realized gains (losses)	38	50	(11)
Corporate expenses	(61)	(68)	(41)
Interest, fee and bond issue cost amortization expense	(101)	(70)	(36)
Other income (expense)	(102)	37	6
INCOME (LOSS) BEFORE TAXES	588	1,546	585
Reinsurance [Member]
Segment Reporting Information [Line Items]
Gross written premium	9,316	9,067	7,282
Net written premiums	8,983	8,536	6,768
Premiums earned	8,663	7,757	6,466
Incurred losses and LAE	5,997	5,556	4,933
Commission and brokerage	2,134	1,854	1,552
Other underwriting expenses	218	199	176
Underwriting gain (loss)	313	147	(195)
Insurance [Member]
Segment Reporting Information [Line Items]
Gross written premium	4,636	3,982	3,201
Net written premiums	3,361	2,910	2,349
Premiums earned	3,124	2,649	2,215
Incurred losses and LAE	2,103	1,835	1,617
Commission and brokerage	394	354	321
Other underwriting expenses	463	383	336
Underwriting gain (loss)	$ 164	$ 76	$ (58)

Segment Reporting (Schedule O_2

Segment Reporting (Schedule Of Gross Written Premiums Derived From Largest Non-U.S. Market) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Gross written premium	$ 4,602	$ 3,988	$ 3,218
United Kingdom [Member]
Segment Reporting Information [Line Items]
Gross written premium	$ 1,217	$ 1,246	$ 1,116

Schedule I - Summary Of Inves_2

Schedule I - Summary Of Investments - Other Than Investments In Related Parties (Details) $ in Millions	Dec. 31, 2022 USD ($)
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	$ 31,807
Total investments and cash, Market Value	29,853
Total investments and cash, Amount Shown in Balance Sheet	29,872
Fixed Maturity Securities [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	24,191
Total investments and cash, Market Value	22,236
Total investments and cash, Amount Shown in Balance Sheet	22,236
Fixed Maturity Securities [Member] \| Held-to-Maturity [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	848
Total investments and cash, Market Value	821
Total investments and cash, Amount Shown in Balance Sheet	839
U.S. Government and Government Agencies [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	1,334
Total investments and cash, Market Value	1,257
Total investments and cash, Amount Shown in Balance Sheet	1,257
State, Municipalities and Political Subdivisions [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	444
Total investments and cash, Market Value	413
Total investments and cash, Amount Shown in Balance Sheet	413
Foreign Government Securities [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	1,586
Total investments and cash, Market Value	1,415
Total investments and cash, Amount Shown in Balance Sheet	1,415
Foreign Corporate Securities [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	5,143
Total investments and cash, Market Value	4,596
Total investments and cash, Amount Shown in Balance Sheet	4,596
Foreign Corporate Securities [Member] \| Held-to-Maturity [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	28
Total investments and cash, Market Value	28
Total investments and cash, Amount Shown in Balance Sheet	27
Public Utilities [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	218
Total investments and cash, Market Value	203
Total investments and cash, Amount Shown in Balance Sheet	203
All Other Corporate Bonds [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	10,688
Total investments and cash, Market Value	10,013
Total investments and cash, Amount Shown in Balance Sheet	10,013
All Other Corporate Bonds [Member] \| Held-to-Maturity [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	813
Total investments and cash, Market Value	786
Total investments and cash, Amount Shown in Balance Sheet	806
Mortgage-Backed Securities: Commercial [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	1,023
Total investments and cash, Market Value	919
Total investments and cash, Amount Shown in Balance Sheet	919
Mortgage-Backed Securities: Commercial [Member] \| Held-to-Maturity [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	7
Total investments and cash, Market Value	7
Total investments and cash, Amount Shown in Balance Sheet	7
Mortgage Backed Securities: Agency residential [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	3,382
Total investments and cash, Market Value	3,099
Total investments and cash, Amount Shown in Balance Sheet	3,099
Mortgage Backed Securities: Non-agency residential [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	5
Total investments and cash, Market Value	4
Total investments and cash, Amount Shown in Balance Sheet	4
Redeemable Preferred Stock [Member] \| Available For Sale [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	368
Total investments and cash, Market Value	316
Total investments and cash, Amount Shown in Balance Sheet	316
Equity Securities [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	252
Total investments and cash, Market Value	281
Total investments and cash, Amount Shown in Balance Sheet	281
Short Term Investments [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	1,032
Total investments and cash, Market Value	1,032
Total investments and cash, Amount Shown in Balance Sheet	1,032
Other Invested Assets [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	4,085
Total investments and cash, Market Value	4,085
Total investments and cash, Amount Shown in Balance Sheet	4,085
Cash [Member]
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]
Total investments and cash, Cost	1,398
Total investments and cash, Market Value	1,398
Total investments and cash, Amount Shown in Balance Sheet	$ 1,398

Schedule II - Condensed Finan_2

Schedule II - Condensed Financial Information Of The Registrant (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Other assets	$ 930,000,000	$ 757,000,000
Other income (expense)	(102,000,000)	37,000,000	$ 6,000,000
Parent Company [Member]
Debt Instrument [Line Items]
Other assets	43,000,000	50,000,000
Other income (expense)			$ 6,000,000
Parent Company [Member] \| Notes Payable Affiliated [Member] \| 1.69% Matures December 2028 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 300,000,000
Debt instrument, stated interest rate	1.69%
Parent Company [Member] \| Notes Payable Affiliated [Member] \| 1.00% Matures August 2030 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 200,000,000
Debt instrument, stated interest rate	1%
Parent Company [Member] \| Notes Payable Affiliated [Member] \| 3.11% Matures June 2052 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 215,000,000
Debt instrument, stated interest rate	3.11%
Parent Company [Member] \| Notes Payable Affiliated [Member] \| 4.34% Matures June 2052 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 125,000,000
Debt instrument, stated interest rate	4.34%
Parent Company [Member] \| Notes Payable Affiliated [Member] \| 4.34% Matures December 2052 - 1 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 125,000,000
Debt instrument, stated interest rate	4.34%
Parent Company [Member] \| Notes Payable Affiliated [Member] \| 4.34% Matures December 2052 - 2 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 1,773,000,000
Debt instrument, stated interest rate	4.34%
Mt Logan Re [Member]
Debt Instrument [Line Items]
Other assets	$ 65,000,000	66,000,000
Other income (expense)	$ (900,000)	$ (1,300,000)

Schedule II - Condensed Finan_3

Schedule II - Condensed Financial Information Of The Registrant (Condensed Balance Sheets) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]
Fixed maturities - available for sale, at fair value (amortized cost: 2022, $24,191; 2021, $22,064, credit allowances: 2022, $(54); 2021, $(30))	$ 22,236	$ 22,308
Other invested assets	4,085	2,920
Cash	1,398	1,441
Accrued investment income	217	149
Other assets	930	757
TOTAL ASSETS	39,966	38,185
Other liabilities	526	540
Total liabilities	31,525	28,046
Preferred shares, par value: $0.01; 50.0 shares authorized; no shares issued and outstanding
Common shares, par value: $0.01; 200.0 shares authorized; (2022) 69.9 and (2021) 69.8 outstanding before treasury shares	1	1
Additional paid-in capital	2,302	2,274
Accumulated other comprehensive income (loss), net of deferred income	(1,996)	12
Treasury shares, at cost; 30.8 shares (2022) and 30.5 shares (2021)	(3,908)	(3,847)
Retained earnings	12,042	11,700
Total shareholders' equity	8,441	10,139	$ 9,726
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	39,966	38,185
Fixed maturities - available for sale, at fair value, amortized cost	$ 24,191	$ 22,064
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	50,000,000	50,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common shares, par value	$ 0.01	$ 0.01
Common Stock, Shares Authorized	200,000,000	200,000,000
Common shares, outstanding	69,900,000	69,800,000
Accumulated other comprehensive income (loss), net deferred income tax expense (benefit)	$ (250)	$ 27
Treasury shares, at cost	30,800,000	30,500,000
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Fixed maturities - available for sale, at fair value (amortized cost: 2022, $24,191; 2021, $22,064, credit allowances: 2022, $(54); 2021, $(30))
Other invested assets		212
Cash	22	3
Investment in subsidiaries, at equity in the underlying net assets	11,116	10,353
Accrued investment income
Receivable from subsidiaries	11	10
Other assets	43	50
TOTAL ASSETS	11,192	10,628
Long term notes payable, affiliated	2,738	500
Due to subsidiaries	4	2
Other liabilities	9	(13)
Total liabilities	2,751	489
Preferred shares, par value: $0.01; 50.0 shares authorized; no shares issued and outstanding
Common shares, par value: $0.01; 200.0 shares authorized; (2022) 69.9 and (2021) 69.8 outstanding before treasury shares	1	1
Additional paid-in capital	2,302	2,274
Accumulated other comprehensive income (loss), net of deferred income	(1,996)	12
Treasury shares, at cost; 30.8 shares (2022) and 30.5 shares (2021)	(3,908)	(3,847)
Retained earnings	12,042	11,700
Total shareholders' equity	8,441	10,139
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	11,192	10,628
Fixed maturities - available for sale, at fair value, amortized cost
Other invested assets, at cost		$ 212
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	50,000,000	50,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common shares, par value	$ 0.01	$ 0.01
Common Stock, Shares Authorized	200,000,000	200,000,000
Common shares, issued	69,900,000	69,800,000
Common shares, outstanding	69,900,000	69,800,000
Treasury shares, at cost	30,800,000	30,500,000

Schedule II - Condensed Finan_4

Schedule II - Condensed Financial Information Of The Registrant (Condensed Statements Of Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]
Net Investment Income	$ 830	$ 1,165	$ 642
Net realized gains (losses)	38	50	(11)
Other income (expense)	(102)	37	6
Total revenues	12,060	11,866	9,598
Interest expense - affiliated	101	70	36
Total claims and expenses	11,472	10,321	9,013
INCOME (LOSS) BEFORE TAXES	588	1,546	585
Income tax expense (benefit)	9	(167)	(71)
NET INCOME (LOSS)	597	1,379	514
Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period	(2,037)	(488)	423
Reclassification adjustment for realized losses (gains) included in net income (loss)	89	4	(3)
Total URA(D) on securities arising during the period	(1,948)	(485)	420
Foreign currency translation adjustments	(77)	(62)	86
Benefit plan actuarial net gain (loss) for the period	15	17	(6)
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	2	6	6
Total benefit plan net gain (loss) for the period	17	23	1
Total other comprehensive income (loss), net of tax	(2,008)	(523)	507
COMPREHENSIVE INCOME (LOSS)	(1,411)	856	1,021
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net Investment Income			1
Other income (expense)			6
Net income (loss) of subsidiaries	648	1,416	536
Total revenues	648	1,416	543
Interest expense - affiliated	13	6	5
Other expenses	38	31	24
Total claims and expenses	51	37	29
INCOME (LOSS) BEFORE TAXES	597	1,379	514
NET INCOME (LOSS)	597	1,379	514
Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period	(2,037)	(488)	423
Reclassification adjustment for realized losses (gains) included in net income (loss)	89	4	(3)
Total URA(D) on securities arising during the period	(1,948)	(485)	420
Foreign currency translation adjustments	(77)	(62)	86
Benefit plan actuarial net gain (loss) for the period	15	17	(6)
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	2	6	6
Total benefit plan net gain (loss) for the period	17	23	1
Total other comprehensive income (loss), net of tax	(2,008)	(523)	507
COMPREHENSIVE INCOME (LOSS)	$ (1,411)	$ 856	$ 1,021

Schedule II - Condensed Finan_5

Schedule II - Condensed Financial Information Of The Registrant (Condensed Statements Of Cash Flows) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 597	$ 1,379	$ 514
Adjustments to reconcile net income to net cash provided by operating activities:
Change in other assets and liabilities, net	(291)	(290)	(99)
Amortization of bond premium (accrual of bond discount)	55	76	50
Realized capital losses (gains)	(38)	(50)	11
Non-cash compensation expense	45	43	39
Net cash provided by (used in) operating activities	3,695	3,833	2,874
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from fixed maturities sold - available for sale	1,403	1,916	1,951
Distributions from other invested assets	266	257	310
Cost of other invested assets acquired	(1,547)	(757)	(557)
Net change in short-term investments	149	(43)	(718)
Net cash provided by (used in) investing activities	(3,418)	(3,869)	(3,683)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of treasury shares	(61)	(225)	(200)
Dividends paid to shareholders	(255)	(247)	(249)
Net cash provided by (used in) financing activities	(359)	674	800
EFFECT OF EXCHANGE RATE CHANGES ON CASH	39	1	3
Net increase (decrease) in cash	(42)	639	(6)
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	597	1,379	514
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in retained (earnings) deficit of subsidiaries	(648)	(1,416)	(536)
Dividends received from subsidiaries	476	320	650
Change in other assets and liabilities, net	28	3	(21)
Increase (decrease) in due to/from affiliate	2	8	(9)
Amortization of bond premium (accrual of bond discount)
Non-cash compensation expense	2	2	3
Net cash provided by (used in) operating activities	457	296	601
CASH FLOWS FROM INVESTING ACTIVITIES:
Additional investment in subsidiaries	(824)	(120)	(138)
Proceeds from fixed maturities matured/called - available for sale, at market value			1
Proceeds from fixed maturities sold - available for sale			200
Distributions from other invested assets	237	607	560
Cost of fixed maturities acquired - available for sale
Cost of other invested assets acquired	(26)	(535)	(801)
Net change in short-term investments
Net cash provided by (used in) investing activities	(613)	(48)	(178)
CASH FLOWS FROM FINANCING ACTIVITIES:
Common shares issued during the period, net	26	27	23
Purchase of treasury shares	(61)	(225)	(200)
Dividends paid to shareholders	(255)	(247)	(249)
Proceeds from issuance (cost of repayment) of long term note payable - affiliated	465	200
Net cash provided by (used in) financing activities	175	(245)	(426)
EFFECT OF EXCHANGE RATE CHANGES ON CASH
Net increase (decrease) in cash	19	2	(3)
Cash, beginning of period	3	1	3
Cash, end of period	22	3	1
NON-CASH TRANSACTIONS:
Dividend of 4,297,463 shares of Everest Re Group, Lts. ("Group) common stock received by Group from Everest Preferred International Holdings ("Preferred Holdings"), a direct subsidiary	1,405
Issuance of $1,773 million promissory note payable by Group to Preferred Holdings in exchange for 5,422,508 shares of Group common stock received by Group from Preferred Holdings	1,773
Capital contribution of 9,719,971 shares of Group common stock provided from Group to Everest Re Advisors, Ltd.	$ 3,178
Dividend, shares received	4,297,463
Issuance of promissory note, shares exchanged	5,422,508
Capital contribution, shares	9,719,971

Schedule III - Supplementary _2

Schedule III - Supplementary Insurance Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplementary Insurance Information, by Segment [Line Items]
Deferred Acquisition Costs	$ 962	$ 872	$ 622
Reverse for Losses and Loss Adjustment Expenses	22,065	19,009	16,399
Unearned Premium Reserves	5,147	4,610	3,501
Premiums Earned	11,787	10,406	8,682
Net Investment Income	830	1,165	642
Incurred Loss and Loss Adjustment Expenses	8,100	7,391	6,551
Amortization of Deferred Acquisition Costs	2,528	2,209	1,873
Other Operating Expenses	682	583	511
Net Written Premium	12,344	11,446	9,117
Reinsurance [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred Acquisition Costs	710	654	448
Reverse for Losses and Loss Adjustment Expenses	16,140	13,895	12,023
Unearned Premium Reserves	2,894	2,723	1,995
Premiums Earned	8,663	7,757	6,466
Net Investment Income	590	823	458
Incurred Loss and Loss Adjustment Expenses	5,997	5,556	4,933
Amortization of Deferred Acquisition Costs	2,134	1,854	1,552
Other Operating Expenses	218	199	176
Net Written Premium	8,983	8,536	6,768
Insurance [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred Acquisition Costs	252	218	174
Reverse for Losses and Loss Adjustment Expenses	5,925	5,114	4,376
Unearned Premium Reserves	2,253	1,887	1,506
Premiums Earned	3,124	2,649	2,215
Net Investment Income	240	342	184
Incurred Loss and Loss Adjustment Expenses	2,103	1,835	1,617
Amortization of Deferred Acquisition Costs	394	354	321
Other Operating Expenses	463	383	336
Net Written Premium	$ 3,361	$ 2,910	$ 2,349

Schedule IV - Reinsurance (Deta

Schedule IV - Reinsurance (Details) - USD ($) $ in Millions	12 Months Ended
Schedule IV - Reinsurance (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Gross Amount	$ 4,218	$ 3,589	$ 3,028
Ceded to Other Companies	1,513	1,498	1,401
Assumed from Other Companies	9,082	8,315	7,055
Net premiums earned	11,787	10,406	8,682
Total Property and Liability Insurance [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Gross Amount	4,218	3,589	3,028
Ceded to Other Companies	1,513	1,498	1,401
Assumed from Other Companies	9,082	8,315	7,055
Net premiums earned	$ 11,787	$ 10,406	$ 8,682
Assumed to Net	77.10%	79.90%	81.30%