Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ (5,931)	$ (199)
OCI before reclassifications	934	(3,061)
Deferred income tax benefit (expense) (2)	(196)	643
AOCI before reclassifications, net of income tax	(5,193)	(2,617)
Amounts reclassified from AOCI	69	39
Deferred income tax benefit (expense) (2)	(14)	(8)
Amounts reclassified from AOCI, net of income tax	55	31
Balance, end of period	(5,138)	(2,586)
Unrealized Investment  Gains (Losses), Net of Related  Offsets (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(6,041)	4,996
OCI before reclassifications	1,367	(5,797)
Deferred income tax benefit (expense) (2)	(287)	1,144
AOCI before reclassifications, net of income tax	(4,961)	343
Amounts reclassified from AOCI	69	41
Deferred income tax benefit (expense) (2)	(14)	(9)
Amounts reclassified from AOCI, net of income tax	55	32
Balance, end of period	(4,906)	375
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	496	233
OCI before reclassifications	(40)	20
Deferred income tax benefit (expense) (2)	8	69
AOCI before reclassifications, net of income tax	464	322
Amounts reclassified from AOCI	0	(2)
Deferred income tax benefit (expense) (2)	0	1
Amounts reclassified from AOCI, net of income tax	0	(1)
Balance, end of period	464	321
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,377)	(3,229)
OCI before reclassifications	(7)	929
Deferred income tax benefit (expense) (2)	2	(195)
AOCI before reclassifications, net of income tax	(1,382)	(2,495)
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense) (2)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Balance, end of period	(1,382)	(2,495)
AOCI, Liability for Future Policy Benefit, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	1,016	(2,192)
OCI before reclassifications	(394)	1,795
Deferred income tax benefit (expense) (2)	83	(377)
AOCI before reclassifications, net of income tax	705	(774)
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense) (2)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Balance, end of period	705	(774)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(25)	(7)
OCI before reclassifications	8	(8)
Deferred income tax benefit (expense) (2)	(2)	2
AOCI before reclassifications, net of income tax	(19)	(13)
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense) (2)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Balance, end of period	$ (19)	$ (13)