Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ (5,701)	$ (4,056)	$ (5,931)	$ (199)
OCI before reclassifications	(1,517)	(3,510)	(1,346)	(8,486)
Deferred income tax benefit (expense) (2)	318	739	282	1,783
AOCI before reclassifications, net of income tax	(6,900)	(6,827)	(6,995)	(6,902)
Amounts reclassified from AOCI	42	36	162	131
Deferred income tax benefit (expense) (2)	(9)	(8)	(34)	(28)
Amounts reclassified from AOCI, net of income tax	33	28	128	103
Balance, end of period	(6,867)	(6,799)	(6,867)	(6,799)
Unrealized Investment  Gains (Losses), Net of Related  Offsets (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(5,535)	(3,638)	(6,041)	4,996
OCI before reclassifications	(2,390)	(4,988)	(1,874)	(15,927)
Deferred income tax benefit (expense) (2)	501	1,175	393	3,399
AOCI before reclassifications, net of income tax	(7,424)	(7,451)	(7,522)	(7,532)
Amounts reclassified from AOCI	44	45	168	147
Deferred income tax benefit (expense) (2)	(9)	(10)	(35)	(31)
Amounts reclassified from AOCI, net of income tax	35	35	133	116
Balance, end of period	(7,389)	(7,416)	(7,389)	(7,416)
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	423	523	496	233
OCI before reclassifications	(32)	331	(121)	613
Deferred income tax benefit (expense) (2)	7	(197)	26	(183)
AOCI before reclassifications, net of income tax	398	657	401	663
Amounts reclassified from AOCI	(2)	(9)	(6)	(16)
Deferred income tax benefit (expense) (2)	0	2	1	3
Amounts reclassified from AOCI, net of income tax	(2)	(7)	(5)	(13)
Balance, end of period	396	650	396	650
Changes in Nonperformance Risk on Market Risk Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,475)	(1,348)	(1,377)	(3,229)
OCI before reclassifications	175	130	51	2,511
Deferred income tax benefit (expense) (2)	(37)	(27)	(11)	(527)
AOCI before reclassifications, net of income tax	(1,337)	(1,245)	(1,337)	(1,245)
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	(1,337)	(1,245)	(1,337)	(1,245)
Changes in Discount Rates on the Liability for Future Policy Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	902	440	1,016	(2,192)
OCI before reclassifications	742	1,041	598	4,373
Deferred income tax benefit (expense) (2)	(156)	(218)	(126)	(918)
AOCI before reclassifications, net of income tax	1,488	1,263	1,488	1,263
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	1,488	1,263	1,488	1,263
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(16)	(33)	(25)	(7)
OCI before reclassifications	(12)	(24)	0	(56)
Deferred income tax benefit (expense) (2)	3	6	0	12
AOCI before reclassifications, net of income tax	(25)	(51)	(25)	(51)
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	$ (25)	$ (51)	$ (25)	$ (51)