Fair Value of Financial Instruments - Fair Value Measured on a Recurring Basis Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	$ (4,458)	$ 269	$ 2,886
Items Included in Net Income	(2,604)	(4,044)	1,440
Gains (Losses) in OCI and Other	12	33	(1,702)
Issuances, Sales, Maturities, Settlements, Calls, Net	1,229	(388)	693
Transfers Into or Out of Level 3, Net	(651)	(328)	(3,048)
Ending Fair Value	$ (6,472)	$ (4,458)	$ 269
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	$ 2,497	$ 2,295	$ 5,720
Items Included in Net Income	(1)	2	1
Gains (Losses) in OCI and Other	(14)	17	(1,550)
Issuances, Sales, Maturities, Settlements, Calls, Net	514	194	796
Transfers Into or Out of Level 3, Net	(131)	(11)	(2,672)
Ending Fair Value	2,865	2,497	2,295
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	35	0
Items Included in Net Income	0	(4)	0
Gains (Losses) in OCI and Other	0	4	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	0	(30)	0
Transfers Into or Out of Level 3, Net	(5)	0	36
Ending Fair Value	0	5	35
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
Items Included in Net Income			0
Gains (Losses) in OCI and Other			(6)
Issuances, Sales, Maturities, Settlements, Calls, Net			(30)
Transfers Into or Out of Level 3, Net			(5)
Ending Fair Value			0
RMBS | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	13	1	4
Items Included in Net Income	0	0	0
Gains (Losses) in OCI and Other	(2)	0	1
Issuances, Sales, Maturities, Settlements, Calls, Net	6	5	21
Transfers Into or Out of Level 3, Net	(5)	7	(25)
Ending Fair Value	12	13	1
CMBS | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	8	0	0
Items Included in Net Income	0	0	0
Gains (Losses) in OCI and Other	(1)	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	29	(4)	17
Transfers Into or Out of Level 3, Net	(28)	12	(17)
Ending Fair Value	8	8	0
ABS | Fixed maturity AFS securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	1,484	1,117	870
Items Included in Net Income	0	0	0
Gains (Losses) in OCI and Other	25	9	(113)
Issuances, Sales, Maturities, Settlements, Calls, Net	1,037	733	676
Transfers Into or Out of Level 3, Net	(447)	(375)	(316)
Ending Fair Value	2,099	1,484	1,117
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	48	49	93
Items Included in Net Income	0	0	(6)
Gains (Losses) in OCI and Other	3	(2)	(22)
Issuances, Sales, Maturities, Settlements, Calls, Net	12	(2)	(12)
Transfers Into or Out of Level 3, Net	10	3	(4)
Ending Fair Value	73	48	49
Trading securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	284	581	828
Items Included in Net Income	1	17	(80)
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(20)	(313)	(152)
Transfers Into or Out of Level 3, Net	0	(1)	(15)
Ending Fair Value	265	284	581
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	42	153	95
Items Included in Net Income	(4)	(19)	54
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	(98)	19
Transfers Into or Out of Level 3, Net	(4)	6	(15)
Ending Fair Value	34	42	153
Mortgage loans on real estate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	288	487	739
Items Included in Net Income	9	(7)	(20)
Gains (Losses) in OCI and Other	1	5	(5)
Issuances, Sales, Maturities, Settlements, Calls, Net	(66)	(197)	(227)
Transfers Into or Out of Level 3, Net	0	0	0
Ending Fair Value	232	288	487
Derivative liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	36	2	21
Items Included in Net Income	(124)	(13)	2
Gains (Losses) in OCI and Other	0	0	(6)
Issuances, Sales, Maturities, Settlements, Calls, Net	3	16	0
Transfers Into or Out of Level 3, Net	(51)	31	(15)
Ending Fair Value	(136)	36	2
Other investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	0
Items Included in Net Income	0
Gains (Losses) in OCI and Other	0
Issuances, Sales, Maturities, Settlements, Calls, Net	13
Transfers Into or Out of Level 3, Net	10
Ending Fair Value	23	0
Ceded MRBs | Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	2	12	95
Items Included in Net Income	0	(10)	(83)
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	2	12
Ceded MRBs | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(239)	(205)	(17)
Items Included in Net Income	(142)	(34)	(188)
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	(381)	(239)	(205)
Indexed annuity ceded embedded derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	940	525	528
Items Included in Net Income	161	6	(215)
Gains (Losses) in OCI and Other	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	14	409	212
Transfers Into or Out of Level 3, Net	0	0	0
Ending Fair Value	1,115	940	525
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	(9,077)	(4,783)
Items Included in Net Income	(3,059)	(3,193)
Gains (Losses) in OCI and Other	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(313)	(1,101)	(627)
Transfers Into or Out of Level 3, Net	0	0
Ending Fair Value	(12,449)	(9,077)	(4,783)
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		(4,783)	(6,131)
Items Included in Net Income			1,975
Gains (Losses) in OCI and Other			0
Issuances, Sales, Maturities, Settlements, Calls, Net			(627)
Transfers Into or Out of Level 3, Net			0
Ending Fair Value			(4,783)
Reinsurance-related embedded derivatives | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(789)	0
Items Included in Net Income	555	(789)
Gains (Losses) in OCI and Other	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0
Transfers Into or Out of Level 3, Net	0	0
Ending Fair Value	$ (234)	$ (789)	$ 0