Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ (5,288)	$ (2,541)	$ (6,106)	$ 47
OCI before reclassifications	(809)	(2,147)	163	(5,464)
Deferred income tax benefit (expense) (3)	170	451	(34)	1,147
AOCI before reclassifications, net of income tax	(5,927)	(4,237)	(5,977)	(4,270)
Amounts reclassified from AOCI	57	78	121	119
Deferred income tax benefit (expense) (2)	(11)	(17)	(25)	(25)
Amounts reclassified from AOCI, net of income tax	46	61	96	94
Balance, end of period	(5,881)	(4,176)	(5,881)	(4,176)
Unrealized Investment Gains (Losses), Net of Related Offsets (1)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(5,028)	459	(6,194)	5,285
OCI before reclassifications	(895)	(5,380)	519	(11,435)
Deferred income tax benefit (expense) (3)	187	1,130	(109)	2,325
AOCI before reclassifications, net of income tax	(5,736)	(3,791)	(5,784)	(3,825)
Amounts reclassified from AOCI	59	81	120	124
Deferred income tax benefit (expense) (2)	(12)	(17)	(25)	(26)
Amounts reclassified from AOCI, net of income tax	47	64	95	98
Balance, end of period	(5,689)	(3,727)	(5,689)	(3,727)
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	472	329	504	239
OCI before reclassifications	(50)	265	(90)	284
Deferred income tax benefit (expense) (3)	11	(55)	19	17
AOCI before reclassifications, net of income tax	433	539	433	540
Amounts reclassified from AOCI	(4)	(5)	(4)	(7)
Deferred income tax benefit (expense) (2)	1	0	1	1
Amounts reclassified from AOCI, net of income tax	(3)	(5)	(3)	(6)
Balance, end of period	430	534	430	534
Changes in Nonperformance Risk on Market Risk Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,383)	(2,496)	(1,378)	(3,230)
OCI before reclassifications	(116)	1,451	(123)	2,380
Deferred income tax benefit (expense) (3)	24	(305)	26	(500)
AOCI before reclassifications, net of income tax	(1,475)	(1,350)	(1,475)	(1,350)
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	(1,475)	(1,350)	(1,475)	(1,350)
Changes in Discount Rates on the Liability for Future Policy Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	706	(776)	1,020	(2,199)
OCI before reclassifications	251	1,542	(146)	3,343
Deferred income tax benefit (expense) (3)	(52)	(325)	31	(703)
AOCI before reclassifications, net of income tax	905	441	905	441
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	905	441	905	441
Other Components of AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(55)	(57)	(58)	(48)
OCI before reclassifications	1	(25)	3	(36)
Deferred income tax benefit (expense) (3)	0	6	(1)	8
AOCI before reclassifications, net of income tax	(54)	(76)	(56)	(76)
Amounts reclassified from AOCI	2	2	5	2
Deferred income tax benefit (expense) (2)	0	0	(1)	0
Amounts reclassified from AOCI, net of income tax	2	2	4	2
Balance, end of period	$ (52)	$ (74)	$ (52)	$ (74)