Fair Value of Financial Instruments - Fair Value Measured on a Recurring Basis Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	$ (5,766)	$ (2,701)	$ (4,458)	$ 269
Items Included in Net Income	(29)	537	(1,511)	(1,865)
Gains (Losses) in OCI and Other	98	(21)	87	(14)
Issuances, Sales, Maturities, Settlements, Calls, Net	336	105	749	(330)
Transfers Into or Out of Level 3, Net	(190)	(156)	(418)	(296)
Ending Fair Value	(5,551)	(2,236)	(5,551)	(2,236)
Corporate bonds | Fixed maturity AFS securities, at fair value
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	2,581	2,366	2,497	2,295
Items Included in Net Income	(1)	(4)	1	1
Gains (Losses) in OCI and Other	43	(14)	25	(13)
Issuances, Sales, Maturities, Settlements, Calls, Net	50	105	264	130
Transfers Into or Out of Level 3, Net	(7)	(43)	(121)	(3)
Ending Fair Value	2,666	2,410	2,666	2,410
State and municipal bonds | Fixed maturity AFS securities, at fair value
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value		36	5	35
Items Included in Net Income		(4)	0	(4)
Gains (Losses) in OCI and Other		1	0	3
Issuances, Sales, Maturities, Settlements, Calls, Net		0	0	(1)
Transfers Into or Out of Level 3, Net		0	(5)	0
Ending Fair Value	0	33	0	33
RMBS | Fixed maturity AFS securities, at fair value
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	18	6	13	1
Items Included in Net Income	0	0	0	0
Gains (Losses) in OCI and Other	0	(1)	(1)	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	0	0	6	5
Transfers Into or Out of Level 3, Net	(5)	7	(5)	7
Ending Fair Value	13	12	13	12
CMBS | Fixed maturity AFS securities, at fair value
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	23		8	0
Items Included in Net Income	0		0	0
Gains (Losses) in OCI and Other	0		0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	14		29	(4)
Transfers Into or Out of Level 3, Net	(16)		(16)	4
Ending Fair Value	21	0	21	0
ABS | Fixed maturity AFS securities, at fair value
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	1,997	1,208	1,484	1,117
Items Included in Net Income	0	0	0	0
Gains (Losses) in OCI and Other	50	(5)	55	(3)
Issuances, Sales, Maturities, Settlements, Calls, Net	232	247	798	567
Transfers Into or Out of Level 3, Net	(178)	(113)	(236)	(344)
Ending Fair Value	2,101	1,337	2,101	1,337
Hybrid and redeemable preferred securities | Fixed maturity AFS securities, at fair value
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	50	60	48	49
Items Included in Net Income	0	0	0	0
Gains (Losses) in OCI and Other	1	1	3	(2)
Issuances, Sales, Maturities, Settlements, Calls, Net	16	0	16	(2)
Transfers Into or Out of Level 3, Net	10	(13)	10	3
Ending Fair Value	77	48	77	48
Trading securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	273	351	284	581
Items Included in Net Income	7	(3)	7	(1)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(6)	(4)	(17)	(236)
Transfers Into or Out of Level 3, Net	0	6	0	6
Ending Fair Value	274	350	274	350
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	38	125	42	153
Items Included in Net Income	0	12	(3)	(17)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	1	0	0	1
Transfers Into or Out of Level 3, Net	(4)	0	(4)	0
Ending Fair Value	35	137	35	137
Mortgage loans on real estate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	258	404	288	487
Items Included in Net Income	2	2	6	0
Gains (Losses) in OCI and Other	4	(3)	5	2
Issuances, Sales, Maturities, Settlements, Calls, Net	(1)	(88)	(36)	(174)
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	263	315	263	315
Derivative investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(8)	31	36	2
Items Included in Net Income	6	(26)	11	(28)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	1	8	3	8
Transfers Into or Out of Level 3, Net	0	0	(51)	31
Ending Fair Value	(1)	13	(1)	13
Other investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	0		0
Items Included in Net Income	0		0
Gains (Losses) in OCI and Other	0		0
Issuances, Sales, Maturities, Settlements, Calls, Net	10		10
Transfers Into or Out of Level 3, Net	10		10
Ending Fair Value	20		20
Ceded MRBs | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	2	2	2	12
Items Included in Net Income	0	0	0	(10)
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	2	2	2
Ceded MRBs | Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(344)	(293)	(239)	(205)
Items Included in Net Income	3	(12)	(102)	(100)
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	(341)	(305)	(341)	(305)
Indexed annuity ceded embedded derivatives | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	967	603	940	525
Items Included in Net Income	191	(49)	238	(37)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	(26)	32	(46)	98
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	1,132	586	1,132	586
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	(11,417)	(7,600)	(9,077)	(4,783)
Items Included in Net Income	(898)	621	(2,915)	(1,669)
Gains (Losses) in OCI and Other	0	0	0	0
Issuances, Sales, Maturities, Settlements, Calls, Net	45	(195)	(278)	(722)
Transfers Into or Out of Level 3, Net	0	0	0	0
Ending Fair Value	(12,270)	$ (7,174)	(12,270)	$ (7,174)
Reinsurance-related embedded derivatives | Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Beginning Fair Value	(204)		(789)
Items Included in Net Income	661		1,246
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	$ 457		$ 457