Fair Value of Financial Instruments - Fair Value Measured on a Recurring Basis Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	$ 269	$ 2,886	$ 6,245
Items Included in Net Income	(4,044)	1,440	(1,574)
Gains (Losses) in OCI and Other	33	(1,702)	(173)
Issuances, Sales, Maturities, Settlements, Calls, Net	(388)	693	1,420
Transfers Into or Out of Level 3, Net	(328)	(3,048)	(3,032)
Ending Fair Value	$ (4,458)	$ 269	$ 2,886
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net income (loss)	Net income (loss)	Net income (loss)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Unrealized investment gain (loss)	Unrealized investment gain (loss)	Unrealized investment gain (loss)
Corporate bonds \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	$ 2,295	$ 5,720	$ 5,121
Items Included in Net Income	2	1	4
Gains (Losses) in OCI and Other	17	(1,550)	(182)
Issuances, Sales, Maturities, Settlements, Calls, Net	194	796	748
Transfers Into or Out of Level 3, Net	(11)	(2,672)	29
Ending Fair Value	2,497	2,295	5,720
State and municipal bonds \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	35	0
Items Included in Net Income	(4)	0
Gains (Losses) in OCI and Other	4	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	(30)	0
Transfers Into or Out of Level 3, Net	0	36
Ending Fair Value	5	35	0
U.S. government bonds \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value		0	5
Items Included in Net Income			0
Gains (Losses) in OCI and Other			0
Issuances, Sales, Maturities, Settlements, Calls, Net			(5)
Transfers Into or Out of Level 3, Net			0
Ending Fair Value			0
Foreign government bonds \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	0	41	74
Items Included in Net Income		0	0
Gains (Losses) in OCI and Other		(6)	(11)
Issuances, Sales, Maturities, Settlements, Calls, Net		(30)	80
Transfers Into or Out of Level 3, Net		(5)	(102)
Ending Fair Value		0	41
RMBS \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	1	4	2
Items Included in Net Income	0	0	(1)
Gains (Losses) in OCI and Other	0	1	0
Issuances, Sales, Maturities, Settlements, Calls, Net	5	21	3
Transfers Into or Out of Level 3, Net	7	(25)	0
Ending Fair Value	13	1	4
CMBS \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	0	0	0
Items Included in Net Income	0	0	0
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(4)	17	8
Transfers Into or Out of Level 3, Net	12	(17)	(8)
Ending Fair Value	8	0	0
ABS \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	1,117	870	570
Items Included in Net Income	0	0	1
Gains (Losses) in OCI and Other	9	(113)	(9)
Issuances, Sales, Maturities, Settlements, Calls, Net	733	676	602
Transfers Into or Out of Level 3, Net	(375)	(316)	(294)
Ending Fair Value	1,484	1,117	870
Hybrid and redeemable preferred securities \| Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	49	93	104
Items Included in Net Income	0	(6)	0
Gains (Losses) in OCI and Other	(2)	(22)	27
Issuances, Sales, Maturities, Settlements, Calls, Net	(2)	(12)	(38)
Transfers Into or Out of Level 3, Net	3	(4)	0
Ending Fair Value	48	49	93
Trading securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	581	828	644
Items Included in Net Income	17	(80)	(3)
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(313)	(152)	210
Transfers Into or Out of Level 3, Net	(1)	(15)	(23)
Ending Fair Value	284	581	828
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	153	95	59
Items Included in Net Income	(19)	54	39
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(98)	19	(3)
Transfers Into or Out of Level 3, Net	6	(15)	0
Ending Fair Value	42	153	95
Mortgage loans on real estate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	487	739	832
Items Included in Net Income	(7)	(20)	11
Gains (Losses) in OCI and Other	5	(5)	5
Issuances, Sales, Maturities, Settlements, Calls, Net	(197)	(227)	(109)
Transfers Into or Out of Level 3, Net	0	0	0
Ending Fair Value	288	487	739
Derivative investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	2	21	1,542
Items Included in Net Income	(13)	2	1,255
Gains (Losses) in OCI and Other	0	(6)	(3)
Issuances, Sales, Maturities, Settlements, Calls, Net	16	0	(139)
Transfers Into or Out of Level 3, Net	31	(15)	(2,634)
Ending Fair Value	36	2	21
Ceded MRBs \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	12	95	336
Items Included in Net Income	(10)	(83)	(241)
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0
Transfers Into or Out of Level 3, Net	0	0	0
Ending Fair Value	2	12	95
Ceded MRBs \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(205)	(17)	0
Items Included in Net Income	(34)	(188)	(17)
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0
Transfers Into or Out of Level 3, Net	0	0	0
Ending Fair Value	(239)	(205)	(17)
Indexed annuity ceded embedded derivatives \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	525	528	550
Items Included in Net Income	6	(215)	87
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	409	212	(109)
Transfers Into or Out of Level 3, Net	0	0	0
Ending Fair Value	940	525	528
RILA, fixed indexed annuity and IUL contracts \| Policyholder account balances
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(4,783)	(6,131)
Items Included in Net Income	(3,193)	1,975
Gains (Losses) in OCI and Other	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(1,101)	(627)
Transfers Into or Out of Level 3, Net	0	0
Ending Fair Value	(9,077)	(4,783)	(6,131)
RILA, fixed indexed annuity and IUL contracts \| Future contract benefits
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value		(6,131)	(3,594)
Items Included in Net Income			(2,709)
Gains (Losses) in OCI and Other			0
Issuances, Sales, Maturities, Settlements, Calls, Net			172
Transfers Into or Out of Level 3, Net			0
Ending Fair Value			$ (6,131)
Reinsurance-related embedded derivatives \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	0
Items Included in Net Income	(789)
Gains (Losses) in OCI and Other	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0
Transfers Into or Out of Level 3, Net	0
Ending Fair Value	$ (789)	$ 0

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- Definition

Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-3

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- Definition

Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into (out of) level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-3

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- Definition

Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-3

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- Definition

Indicates line item in statement in which net income is reported that includes gain (loss) from asset measured at fair value using unobservable input (level 3).

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- Definition

Indicates line item in statement in which other comprehensive income (OCI) is reported that includes gain (loss) from asset measured at fair value using unobservable input (level 3).

+ References

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