Fair Value (Unobservable Input Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net Derivatives (2)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	$ 33	$ 30	$ 35	$ 36
Total realized/unrealized gains (losses) included in net income (loss) (4) (5)	(5)	(5)	(5)	(15)
Total realized/unrealized gains (losses) included in AOCI	0	12	0	16
Purchases (6)	9	1	9	1
Sales (6)	0	0	0	0
Issuances (6)	0	0	0	0
Settlements (6)	0	0	0	0
Transfers into Level 3 (7)	0	0	0	0
Transfers out of Level 3 (7)	(10)	0	(12)	0
Balance, end of period	27	38	27	38
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(5)	(5)	(5)	(15)
Changes in unrealized gains (losses) included in OCI	0	12	0	16
Embedded Derivatives on Index-Linked Annuities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	(5,164)	(5,674)	(3,932)	(6,641)
Total realized/unrealized gains (losses) included in net income (loss) (4) (5)	(1,703)	2,825	(2,793)	3,588
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases (6)	0	0	0	0
Sales (6)	0	0	0	0
Issuances (6)	0	0	0	0
Settlements (6)	(19)	18	(161)	222
Transfers into Level 3 (7)	0	0	0	0
Transfers out of Level 3 (7)	0	0	0	0
Balance, end of period	(6,886)	(2,831)	(6,886)	(2,831)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(1,802)	2,756	(2,968)	3,443
Changes in unrealized gains (losses) included in OCI	0	0	0	0
Corporate (1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,936	1,618	1,787	1,399
Total realized/unrealized gains (losses) included in net income (loss) (4) (5)	(4)	(6)	(3)	(6)
Total realized/unrealized gains (losses) included in AOCI	(22)	(110)	7	(216)
Purchases (6)	68	330	210	648
Sales (6)	(42)	(56)	(73)	(140)
Issuances (6)	0	0	0	0
Settlements (6)	0	0	0	0
Transfers into Level 3 (7)	26	90	56	148
Transfers out of Level 3 (7)	(31)	(156)	(53)	(123)
Balance, end of period	1,931	1,710	1,931	1,710
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(3)	0	(2)	0
Changes in unrealized gains (losses) included in OCI	(24)	(117)	1	(218)
Structured Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	350	194	365	220
Total realized/unrealized gains (losses) included in net income (loss) (4) (5)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	(1)	3	1	(12)
Purchases (6)	36	201	52	229
Sales (6)	(3)	(11)	(7)	(14)
Issuances (6)	0	0	0	0
Settlements (6)	0	0	0	0
Transfers into Level 3 (7)	2	34	2	23
Transfers out of Level 3 (7)	(13)	(76)	(42)	(101)
Balance, end of period	371	345	371	345
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 OCI	(1)	2	0	(12)
Foreign government
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	39	23	38	26
Total realized/unrealized gains (losses) included in net income (loss) (4) (5)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	0	(5)	1	(9)
Purchases (6)	0	0	0	5
Sales (6)	(1)	0	(1)	(1)
Issuances (6)	0	0	0	0
Settlements (6)	0	0	0	0
Transfers into Level 3 (7)	0	22	0	19
Transfers out of Level 3 (7)	0	0	0	0
Balance, end of period	38	40	38	40
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 OCI	0	(5)	1	(9)
Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	25	13	27	13
Total realized/unrealized gains (losses) included in net income (loss) (4) (5)	(2)	1	(4)	1
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases (6)	1	13	1	13
Sales (6)	0	0	0	0
Issuances (6)	0	0	0	0
Settlements (6)	0	0	0	0
Transfers into Level 3 (7)	0	0	0	0
Transfers out of Level 3 (7)	0	0	0	0
Balance, end of period	24	27	24	27
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period	(2)	1	(3)	1
Changes in unrealized gains (losses) included in OCI	0	0	0	0
Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	0	0	0	2
Total realized/unrealized gains (losses) included in net income (loss) (4) (5)	0	0	0	0
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases (6)	0	0	0	0
Sales (6)	0	0	0	(2)
Issuances (6)	0	0	0	0
Settlements (6)	0	0	0	0
Transfers into Level 3 (7)	0	0	0	0
Transfers out of Level 3 (7)	0	0	0	0
Balance, end of period	0	0	0	0
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 OCI	0	0	0	0
Separate account assets [Member]
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) (4) (5)	0	0	0	(1)
Total realized/unrealized gains (losses) included in AOCI	0	0	0	0
Purchases (6)	0	0	0	0
Sales (6)	0	0	0	0
Issuances (6)	0	0	0	0
Settlements (6)	0	0	0	0
Transfers into Level 3 (7)	0	0	0	1
Transfers out of Level 3 (7)	0	0	0	0
Balance, end of period	0	0	0	0
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 OCI	$ 0	$ 0	$ 0	$ 0