Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 6,555	$ 5,231	$ 6,148	$ 5,941
OCI before reclassifications	512	(70)	1,243	(284)
Deferred income tax benefit (expense) (2)	(109)	15	(262)	60
AOCI before reclassifications, net of income tax	(4,166)	(5,314)	(4,182)	(5,338)
Amounts reclassified from AOCI	12	77	33	107
Deferred income tax benefit (expense) (2)	(2)	(17)	(7)	(23)
Amounts reclassified from AOCI, net of income tax	10	60	26	84
Ending Balance	7,035	5,214	7,035	5,214
Unrealized Investment Gains (Losses), Net of Related Offsets (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(4,302)	(4,809)	(5,046)	(4,214)
OCI before reclassifications	505	(455)	1,418	(1,241)
Deferred income tax benefit (expense) (2)	(107)	96	(298)	261
AOCI before reclassifications, net of income tax	(3,904)	(5,168)	(3,926)	(5,194)
Amounts reclassified from AOCI	12	79	40	112
Deferred income tax benefit (expense) (2)	(2)	(17)	(8)	(24)
Amounts reclassified from AOCI, net of income tax	10	62	32	88
Ending Balance	(3,894)	(5,106)	(3,894)	(5,106)
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	345	311	364	272
OCI before reclassifications	(253)	44	(269)	96
Deferred income tax benefit (expense) (2)	53	(9)	56	(20)
AOCI before reclassifications, net of income tax	145	346	151	348
Amounts reclassified from AOCI	0	(2)	(7)	(5)
Deferred income tax benefit (expense) (2)	0	0	1	1
Amounts reclassified from AOCI, net of income tax	0	(2)	(6)	(4)
Ending Balance	145	344	145	344
Changes in Nonperformance Risk on Market Risk Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,623)	(1,710)	(1,602)	(1,880)
OCI before reclassifications	279	109	252	324
Deferred income tax benefit (expense) (2)	(59)	(23)	(53)	(68)
AOCI before reclassifications, net of income tax	(1,403)	(1,624)	(1,403)	(1,624)
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
Ending Balance	(1,403)	(1,624)	(1,403)	(1,624)
Changes in Discount Rates on the Liability for Future Policy Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1,023	966	1,146	719
OCI before reclassifications	(50)	233	(205)	546
Deferred income tax benefit (expense) (2)	11	(49)	43	(115)
AOCI before reclassifications, net of income tax	984	1,150	984	1,150
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
Ending Balance	984	1,150	984	1,150
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(12)	(17)	(25)	(11)
OCI before reclassifications	31	(1)	47	(9)
Deferred income tax benefit (expense) (2)	(7)	0	(10)	2
AOCI before reclassifications, net of income tax	12	(18)	12	(18)
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
Ending Balance	12	(18)	12	(18)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(4,569)	(5,259)	(5,163)	(5,114)
Ending Balance	$ (4,156)	$ (5,254)	$ (4,156)	$ (5,254)