Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ 311	$ 3,185	$ 3,901	$ 5,421
OCI before reclassifications	(4,258)	1,400	(8,841)	(1,412)
Deferred income tax benefit (expense) (2)	894	(295)	1,856	296
AOCI before reclassifications, net of income tax	(3,053)	4,290	(3,084)	4,305
Amounts reclassified from AOCI	56	28	95	9
Deferred income tax benefit (expense) (2)	(12)	(6)	(20)	(2)
Amounts reclassified from AOCI, net of income tax	44	22	75	7
Balance, end of period	(3,009)	4,312	(3,009)	4,312
Unrealized Investment Gains (Losses), Net of Related Offsets (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	77	3,150	3,675	5,321
OCI before reclassifications	(4,496)	1,284	(9,091)	(1,453)
Deferred income tax benefit (expense) (2)	925	(270)	1,890	305
AOCI before reclassifications, net of income tax	(3,494)	4,164	(3,526)	4,173
Amounts reclassified from AOCI	61	30	102	18
Deferred income tax benefit (expense) (2)	(12)	(7)	(21)	(4)
Amounts reclassified from AOCI, net of income tax	49	23	81	14
Balance, end of period	(3,445)	4,187	(3,445)	4,187
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	248	49	233	108
OCI before reclassifications	262	114	282	47
Deferred income tax benefit (expense) (2)	(36)	(24)	(40)	(10)
AOCI before reclassifications, net of income tax	474	139	475	145
Amounts reclassified from AOCI	(5)	(2)	(7)	(9)
Deferred income tax benefit (expense) (2)	0	1	1	2
Amounts reclassified from AOCI, net of income tax	(5)	(1)	(6)	(7)
Balance, end of period	469	138	469	138
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(14)	(14)	(7)	(8)
OCI before reclassifications	(24)	2	(32)	(6)
Deferred income tax benefit (expense) (2)	5	(1)	6	1
AOCI before reclassifications, net of income tax	(33)	(13)	(33)	(13)
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	$ (33)	$ (13)	$ (33)	$ (13)