Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ (5,254)	$ (5,701)	$ (5,114)	$ (5,931)
OCI before reclassifications	1,521	(1,517)	1,237	(1,346)
Deferred income tax benefit (expense) (2)	(320)	318	(260)	282
AOCI before reclassifications, net of income tax	(4,053)	(6,900)	(4,137)	(6,995)
Amounts reclassified from AOCI	22	42	129	162
Deferred income tax benefit (expense) (2)	(4)	(9)	(27)	(34)
Amounts reclassified from AOCI, net of income tax	18	33	102	128
Balance, end of period	(4,035)	(6,867)	(4,035)	(6,867)
Unrealized Investment  Gains (Losses), Net of Related  Offsets (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(5,106)	(5,535)	(4,214)	(6,041)
OCI before reclassifications	2,559	(2,390)	1,318	(1,874)
Deferred income tax benefit (expense) (2)	(537)	501	(276)	393
AOCI before reclassifications, net of income tax	(3,084)	(7,424)	(3,172)	(7,522)
Amounts reclassified from AOCI	30	44	142	168
Deferred income tax benefit (expense) (2)	(6)	(9)	(30)	(35)
Amounts reclassified from AOCI, net of income tax	24	35	112	133
Balance, end of period	(3,060)	(7,389)	(3,060)	(7,389)
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	344	423	272	496
OCI before reclassifications	(118)	(32)	(22)	(121)
Deferred income tax benefit (expense) (2)	24	7	4	26
AOCI before reclassifications, net of income tax	250	398	254	401
Amounts reclassified from AOCI	(8)	(2)	(13)	(6)
Deferred income tax benefit (expense) (2)	2	0	3	1
Amounts reclassified from AOCI, net of income tax	(6)	(2)	(10)	(5)
Balance, end of period	244	396	244	396
Changes in Nonperformance Risk on Market Risk Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,624)	(1,475)	(1,880)	(1,377)
OCI before reclassifications	(257)	175	67	51
Deferred income tax benefit (expense) (2)	53	(37)	(15)	(11)
AOCI before reclassifications, net of income tax	(1,828)	(1,337)	(1,828)	(1,337)
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	(1,828)	(1,337)	(1,828)	(1,337)
Changes in Discount Rates on the Liability for Future Policy Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	1,150	902	719	1,016
OCI before reclassifications	(683)	742	(137)	598
Deferred income tax benefit (expense) (2)	144	(156)	29	(126)
AOCI before reclassifications, net of income tax	611	1,488	611	1,488
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	611	1,488	611	1,488
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(18)	(16)	(11)	(25)
OCI before reclassifications	20	(12)	11	0
Deferred income tax benefit (expense) (2)	(4)	3	(2)	0
AOCI before reclassifications, net of income tax	(2)	(25)	(2)	(25)
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	$ (2)	$ (25)	$ (2)	$ (25)