Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ (5,259)	$ (5,138)	$ (5,114)	$ (5,931)
OCI before reclassifications	(70)	(763)	(284)	171
Deferred income tax benefit (expense) (2)	15	160	60	(36)
AOCI before reclassifications, net of income tax	(5,314)	(5,741)	(5,338)	(5,796)
Amounts reclassified from AOCI	77	51	107	120
Deferred income tax benefit (expense) (2)	(17)	(11)	(23)	(25)
Amounts reclassified from AOCI, net of income tax	60	40	84	95
Balance, end of period	(5,254)	(5,701)	(5,254)	(5,701)
Unrealized Investment  Gains (Losses), Net of Related  Offsets (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(4,809)	(4,906)	(4,214)	(6,041)
OCI before reclassifications	(455)	(851)	(1,241)	516
Deferred income tax benefit (expense) (2)	96	179	261	(108)
AOCI before reclassifications, net of income tax	(5,168)	(5,578)	(5,194)	(5,633)
Amounts reclassified from AOCI	79	55	112	124
Deferred income tax benefit (expense) (2)	(17)	(12)	(24)	(26)
Amounts reclassified from AOCI, net of income tax	62	43	88	98
Balance, end of period	(5,106)	(5,535)	(5,106)	(5,535)
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	311	464	272	496
OCI before reclassifications	44	(49)	96	(89)
Deferred income tax benefit (expense) (2)	(9)	11	(20)	19
AOCI before reclassifications, net of income tax	346	426	348	426
Amounts reclassified from AOCI	(2)	(4)	(5)	(4)
Deferred income tax benefit (expense) (2)	0	1	1	1
Amounts reclassified from AOCI, net of income tax	(2)	(3)	(4)	(3)
Balance, end of period	344	423	344	423
Changes in Nonperformance Risk on Market Risk Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,710)	(1,382)	(1,880)	(1,377)
OCI before reclassifications	109	(117)	324	(124)
Deferred income tax benefit (expense) (2)	(23)	24	(68)	26
AOCI before reclassifications, net of income tax	(1,624)	(1,475)	(1,624)	(1,475)
Amounts reclassified from AOCI	0	0	0	0
Deferred income tax benefit (expense) (2)	0	0	0	0
Amounts reclassified from AOCI, net of income tax	0	0	0	0
Balance, end of period	(1,624)	(1,475)	(1,624)	(1,475)
Changes in Discount Rates on the Liability for Future Policy Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	966	705	719	1,016
OCI before reclassifications	233	250	546	(144)
Deferred income tax benefit (expense) (2)	(49)	(53)	(115)	30
AOCI before reclassifications, net of income tax	1,150	902	1,150	902
Amounts reclassified from AOCI	0	0	0	0
Deferred income tax benefit (expense) (2)	0	0	0	0
Amounts reclassified from AOCI, net of income tax	0	0	0	0
Balance, end of period	1,150	902	1,150	902
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(17)	(19)	(11)	(25)
OCI before reclassifications	(1)	4	(9)	12
Deferred income tax benefit (expense) (2)	0	(1)	2	(3)
AOCI before reclassifications, net of income tax	(18)	(16)	(18)	(16)
Amounts reclassified from AOCI	0	0	0	0
Deferred income tax benefit (expense) (2)	0	0	0	0
Amounts reclassified from AOCI, net of income tax	0	0	0	0
Balance, end of period	$ (18)	$ (16)	$ (18)	$ (16)