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	$ (22,621)	$ (2,451)
OCI before reclassifications	3,979	(10,391)
Deferred income tax benefit (expense)	(867)	2,380
AOCI before reclassifications, net of income tax	(19,509)	(10,462)
Amounts reclassified from AOCI	464	457
Deferred income tax benefit (expense)	(102)	(98)
Amounts reclassified from AOCI, net of income tax	362	359
Balance, end of period	(19,147)	(10,044)
Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(22,646)	20,919
OCI before reclassifications	7,583	(21,450)
Deferred income tax benefit (expense)	(1,728)	4,934
AOCI before reclassifications, net of income tax	(16,791)	4,403
Amounts reclassified from AOCI	566	321
Deferred income tax benefit (expense)	(129)	(75)
Amounts reclassified from AOCI, net of income tax	437	246
Balance, end of period	(16,354)	4,619
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	1,557	1,629
OCI before reclassifications	387	(312)
Deferred income tax benefit (expense)	(97)	55
AOCI before reclassifications, net of income tax	1,847	1,372
Amounts reclassified from AOCI	(132)	112
Deferred income tax benefit (expense)	33	(20)
Amounts reclassified from AOCI, net of income tax	(99)	92
Balance, end of period	1,748	1,464
AOCI, Liability for Future Policy Benefit, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	6,115	(18,559)
OCI before reclassifications	(4,369)	11,869
Deferred income tax benefit (expense)	1,002	(2,611)
AOCI before reclassifications, net of income tax	2,748	(9,301)
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Balance, end of period	2,748	(9,248)
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	107	279
OCI before reclassifications	100	(107)
Deferred income tax benefit (expense)	(21)	23
AOCI before reclassifications, net of income tax	186	195
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Balance, end of period	186	195
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(6,377)	(5,121)
OCI before reclassifications	282	(394)
Deferred income tax benefit (expense)	(24)	(20)
AOCI before reclassifications, net of income tax	(6,119)	(5,535)
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Balance, end of period	(6,119)	(5,497)
Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,377)	(1,598)
OCI before reclassifications	(4)	3
Deferred income tax benefit (expense)	1	(1)
AOCI before reclassifications, net of income tax	(1,380)	(1,596)
Amounts reclassified from AOCI	30	24
Deferred income tax benefit (expense)	(6)	(3)
Amounts reclassified from AOCI, net of income tax	24	21
Balance, end of period	$ (1,356)	(1,577)
Disposal Group, Held-for-Sale or Disposed of by Sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI, net of income tax		59
Disposal Group, Held-for-Sale or Disposed of by Sale | Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI, net of income tax		(30)
Disposal Group, Held-for-Sale or Disposed of by Sale | Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI, net of income tax		0
Disposal Group, Held-for-Sale or Disposed of by Sale | AOCI, Liability for Future Policy Benefit, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI, net of income tax		53
Disposal Group, Held-for-Sale or Disposed of by Sale | AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI, net of income tax		0
Disposal Group, Held-for-Sale or Disposed of by Sale | Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI, net of income tax		38
Disposal Group, Held-for-Sale or Disposed of by Sale | Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI, net of income tax		$ (2)