Fair Value of Financial Instruments - Fair Value Measured on a Recurring Basis Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	$ (626)	$ (2,839)	$ (3,463)	$ (129)
Items Included in Net Income	(2,556)	(306)	(229)	(3,296)
Gains (Losses) in OCI and Other	(7)	(2)	10	(9)
Issuances, Sales, Maturities, Settlements, Calls, Net	679	1,109	1,085	1,469
Transfers Into or Out of Level 3, Net	106	(159)	193	(232)
Ending Fair Value	$ (2,404)	$ (2,197)	$ (2,404)	$ (2,197)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Realized gain (loss)	Realized gain (loss)	Realized gain (loss)	Realized gain (loss)
Corporate bonds | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	$ 6,951	$ 6,747	$ 7,025	$ 6,469
Items Included in Net Income	(24)	(1)	(34)	0
Gains (Losses) in OCI and Other	2	(8)	(1)	(16)
Issuances, Sales, Maturities, Settlements, Calls, Net	222	171	139	481
Transfers Into or Out of Level 3, Net	89	(92)	111	(117)
Ending Fair Value	7,240	6,817	7,240	6,817
State and municipal bonds | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value				5
Items Included in Net Income				0
Gains (Losses) in OCI and Other				0
Issuances, Sales, Maturities, Settlements, Calls, Net				0
Transfers Into or Out of Level 3, Net				(5)
Ending Fair Value		0		0
RMBS | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	19	12	12	13
Items Included in Net Income	0	0	0	0
Gains (Losses) in OCI and Other	0	0	0	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	67	6	74	6
Transfers Into or Out of Level 3, Net	(7)	0	(7)	0
Ending Fair Value	79	18	79	18
CMBS | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	30	8	8	8
Items Included in Net Income	0	0	0	0
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	18	14	40	14
Transfers Into or Out of Level 3, Net	(7)	0	(7)	0
Ending Fair Value	41	22	41	22
ABS | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	2,631	1,692	2,099	1,484
Items Included in Net Income	0	0	(21)	1
Gains (Losses) in OCI and Other	(11)	7	7	5
Issuances, Sales, Maturities, Settlements, Calls, Net	419	365	897	566
Transfers Into or Out of Level 3, Net	(39)	(67)	18	(59)
Ending Fair Value	3,000	1,997	3,000	1,997
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	81	51	72	48
Items Included in Net Income	0	0	0	0
Gains (Losses) in OCI and Other	0	(1)	0	2
Issuances, Sales, Maturities, Settlements, Calls, Net	1	0	19	0
Transfers Into or Out of Level 3, Net	9	0	0	0
Ending Fair Value	91	50	91	50
Trading securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	287	271	265	284
Items Included in Net Income	3	0	4	0
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(1)	2	3	(11)
Transfers Into or Out of Level 3, Net	7	0	24	0
Ending Fair Value	296	273	296	273
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	29	39	34	42
Items Included in Net Income	(1)	0	(8)	(3)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(4)	(1)	(2)	(1)
Transfers Into or Out of Level 3, Net	54	0	54	0
Ending Fair Value	78	38	78	38
Mortgage loans on real estate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	232	289	232	288
Items Included in Net Income	(1)	4	(2)	4
Gains (Losses) in OCI and Other	2	0	4	1
Issuances, Sales, Maturities, Settlements, Calls, Net	(1)	(35)	(2)	(35)
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	232	258	232	258
Derivative investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value		1	(136)	36
Items Included in Net Income		(6)	21	5
Gains (Losses) in OCI and Other		0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net		(3)	0	2
Transfers Into or Out of Level 3, Net		0	0	(51)
Ending Fair Value	(115)	(8)	(115)	(8)
Other investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	15		23
Items Included in Net Income	0		0
Gains (Losses) in OCI and Other	0		0
Issuances, Sales, Maturities, Settlements, Calls, Net	9		1
Transfers Into or Out of Level 3, Net	0		0
Ending Fair Value	24		24
Ceded MRBs | Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	102	59	14	274
Items Included in Net Income	(82)	(20)	6	(235)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	20	39	20	39
Ceded MRBs | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(2,103)	(2,261)	(2,763)	(1,149)
Items Included in Net Income	(438)	72	222	(1,040)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(2,541)	(2,189)	(2,541)	(2,189)
Indexed annuity ceded embedded derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	1,918	973	1,970	940
Items Included in Net Income	130	11	80	44
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	86	772	84	772
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	2,134	1,756	2,134	1,756
LPR ceded derivative | Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	190	201	190	206
Items Included in Net Income	8	1	8	(4)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	198	202	198	202
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	(10,807)	(10,896)	(12,449)	(9,077)
Items Included in Net Income	(2,145)	(339)	(472)	(2,015)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(137)	(182)	(168)	(325)
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(13,089)	(11,417)	(13,089)	(11,417)
Reinsurance-related embedded derivatives
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(92)	(25)	(59)	0
Items Included in Net Income	0	(28)	(33)	(53)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	0	0
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(92)	$ (53)	(92)	$ (53)
Derivative liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(109)
Items Included in Net Income	(6)
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	$ (115)		$ (115)