Fair Value (Unobservable Input Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Residential mortgage loans - FVO
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 109	$ 140	$ 127	$ 165
Total realized/unrealized gains (losses) included in net income (loss)	1	0	(8)	(3)
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	0	0	0	0
Sales	(108)	0	(108)	(11)
Issuances	0	0	0	0
Settlements	(2)	(6)	(11)	(17)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	134	0	134
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	(1)	0	(7)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	(1)	0	(7)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Net Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(42)	(273)	(133)	(392)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(145)	25	(474)	(206)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(287)	57	(152)	594
Total realized/unrealized gains (losses) included in net income (loss)	(201)	(279)	(139)	(490)
Total realized/unrealized gains (losses) included in AOCI	(118)	55	(528)	(365)
Purchases	54	7	82	14
Sales	0	0	0	0
Issuances	(1)	(1)	(3)	(6)
Settlements	26	(49)	68	43
Transfers into Level 3	0	0	0	1
Transfers out of Level 3	(144)	0	1	(1)
Balance, end of period	(671)	(210)	(671)	(210)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(42)	(273)	(133)	(392)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(145)	25	(474)	(206)
Net Embedded Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(236)	44	(97)	715
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	6	1	28	22
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(496)	(574)	(611)	(1,141)
Total realized/unrealized gains (losses) included in net income (loss)	(236)	47	(97)	716
Total realized/unrealized gains (losses) included in AOCI	5	0	28	22
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(13)	(60)	(60)	(184)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(740)	(587)	(740)	(587)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(236)	44	(97)	715
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	6	1	28	22
Corporate fixed maturity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	22,582	23,773	25,435	24,101
Total realized/unrealized gains (losses) included in net income (loss)	2	(22)	(17)	(28)
Total realized/unrealized gains (losses) included in AOCI	(2,218)	(402)	(7,082)	(1,171)
Purchases	1,085	1,853	3,515	3,395
Sales	(486)	(475)	(1,241)	(951)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	209	242	352	139
Transfers out of Level 3	(673)	(233)	(461)	(749)
Balance, end of period	20,501	24,736	20,501	24,736
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	2	(18)	(19)	(21)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(2,217)	(387)	(7,056)	(1,141)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	2	(18)	(19)	(21)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(2,217)	(387)	(7,056)	(1,141)
Foreign government
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	103	145	91	117
Total realized/unrealized gains (losses) included in net income (loss)	5	0	(38)	0
Total realized/unrealized gains (losses) included in AOCI	(1)	0	6	(1)
Purchases	0	12	1	13
Sales	(2)	(10)	(3)	(7)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	10	48	13
Transfers out of Level 3	(44)	(51)	(44)	(29)
Balance, end of period	61	106	61	106
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	5	0	(38)	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(1)	0	5	(1)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	5	0	(38)	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(1)	0	5	(1)
Structured Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	5,347	6,003	5,871	5,289
Total realized/unrealized gains (losses) included in net income (loss)	5	9	30	36
Total realized/unrealized gains (losses) included in AOCI	(152)	36	(575)	9
Purchases	237	334	781	1,333
Sales	(199)	(401)	(850)	(1,049)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	39	6	228	256
Transfers out of Level 3	(232)	(407)	(440)	(294)
Balance, end of period	5,045	5,580	5,045	5,580
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	1	9	23	33
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(146)	36	(554)	11
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	1	9	23	33
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	(146)	36	(554)	11
Municipals
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	0	0	0	0
Total realized/unrealized gains (losses) included in net income (loss)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	0	34	0	34
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	34	0	34
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	179	143	151	150
Total realized/unrealized gains (losses) included in net income (loss)	(7)	6	5	16
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	4	8	28	10
Sales	(7)	(5)	(13)	(21)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(1)	(2)	(4)
Balance, end of period	169	151	169	151
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(7)	6	0	11
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(7)	6	0	11
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Unit-linked and FVO Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	742	849	901	701
Total realized/unrealized gains (losses) included in net income (loss)	(27)	(9)	(195)	53
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	14	9	29	20
Sales	(6)	(8)	(10)	(16)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	13	86
Transfers out of Level 3	0	(8)	(15)	(11)
Balance, end of period	723	833	723	833
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(27)	(9)	(194)	53
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(27)	(9)	(194)	53
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	119	113	3	43
Total realized/unrealized gains (losses) included in net income (loss)	0	1	(1)	1
Total realized/unrealized gains (losses) included in AOCI	0	(2)	0	(2)
Purchases	5	2	5	55
Sales	(19)	(28)	(2)	(37)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	1	0	0
Transfers out of Level 3	(100)	(30)	0	(3)
Balance, end of period	5	57	5	57
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	(1)	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	(1)	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Other Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,013	781	898	573
Total realized/unrealized gains (losses) included in net income (loss)	8	45	80	70
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	33	116	221	299
Sales	(132)	(72)	(178)	(72)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	(25)	(99)	(25)
Balance, end of period	922	845	922	845
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	9	40	77	66
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	9	40	77	66
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Separate Accounts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,230	1,249	2,131	1,079
Total realized/unrealized gains (losses) included in net income (loss)	9	12	52	14
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases	62	161	150	336
Sales	(74)	(18)	(1,107)	(43)
Issuances	(1)	0	3	(1)
Settlements	0	0	4	6
Transfers into Level 3	0	0	0	10
Transfers out of Level 3	(11)	(5)	(18)	(2)
Balance, end of period	1,215	1,399	1,215	1,399
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	0	0	0	0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period	$ 0	$ 0	$ 0	$ 0