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	$ (19,147)	$ (10,044)	$ (22,621)	$ (2,451)
OCI before reclassifications	(2,372)	(11,885)	1,607	(22,276)
Deferred income tax benefit (expense)	513	2,427	(354)	4,807
AOCI before reclassifications, net of income tax	(21,006)	(19,502)	(21,368)	(19,920)
Amounts reclassified from AOCI	801	1,334	1,265	1,791
Deferred income tax benefit (expense)	(181)	(291)	(283)	(389)
Amounts reclassified from AOCI, net of income tax	620	1,043	982	1,402
Balance, end of period	(20,386)	(18,106)	(20,386)	(18,106)
Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(16,354)	4,619	(22,646)	20,919
OCI before reclassifications	(3,173)	(22,365)	4,410	(43,815)
Deferred income tax benefit (expense)	739	5,062	(989)	9,996
AOCI before reclassifications, net of income tax	(18,788)	(12,684)	(19,225)	(12,900)
Amounts reclassified from AOCI	1,040	682	1,606	1,003
Deferred income tax benefit (expense)	(231)	(155)	(360)	(230)
Amounts reclassified from AOCI, net of income tax	809	527	1,246	773
Balance, end of period	(17,979)	(12,136)	(17,979)	(12,136)
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	1,748	1,464	1,557	1,629
OCI before reclassifications	(468)	(154)	(81)	(466)
Deferred income tax benefit (expense)	114	40	17	95
AOCI before reclassifications, net of income tax	1,394	1,350	1,493	1,258
Amounts reclassified from AOCI	(269)	629	(401)	741
Deferred income tax benefit (expense)	54	(132)	87	(152)
Amounts reclassified from AOCI, net of income tax	(215)	497	(314)	589
Balance, end of period	1,179	1,847	1,179	1,847
AOCI, Liability for Future Policy Benefit, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	2,748	(9,248)	6,115	(18,559)
OCI before reclassifications	1,471	11,738	(2,898)	23,607
Deferred income tax benefit (expense)	(300)	(2,608)	702	(5,219)
AOCI before reclassifications, net of income tax	3,919	(118)	3,919	(171)
Amounts reclassified from AOCI	0	0	0	0
Deferred income tax benefit (expense)	0	0	0	0
Amounts reclassified from AOCI, net of income tax	0	0	0	0
Balance, end of period	3,919	(136)	3,919	(136)
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	186	195	107	279
OCI before reclassifications	(99)	(2)	1	(109)
Deferred income tax benefit (expense)	21	0	0	23
AOCI before reclassifications, net of income tax	108	193	108	193
Amounts reclassified from AOCI	0	0	0	0
Deferred income tax benefit (expense)	0	0	0	0
Amounts reclassified from AOCI, net of income tax	0	0	0	0
Balance, end of period	108	193	108	193
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(6,119)	(5,497)	(6,377)	(5,121)
OCI before reclassifications	(102)	(1,105)	180	(1,499)
Deferred income tax benefit (expense)	(61)	(67)	(85)	(87)
AOCI before reclassifications, net of income tax	(6,282)	(6,669)	(6,282)	(6,707)
Amounts reclassified from AOCI	0	0	0	0
Deferred income tax benefit (expense)	0	0	0	0
Amounts reclassified from AOCI, net of income tax	0	0	0	0
Balance, end of period	(6,282)	(6,319)	(6,282)	(6,319)
Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,356)	(1,577)	(1,377)	(1,598)
OCI before reclassifications	(1)	3	(5)	6
Deferred income tax benefit (expense)	0	0	1	(1)
AOCI before reclassifications, net of income tax	(1,357)	(1,574)	(1,381)	(1,593)
Amounts reclassified from AOCI	30	23	60	47
Deferred income tax benefit (expense)	(4)	(4)	(10)	(7)
Amounts reclassified from AOCI, net of income tax	26	19	50	40
Balance, end of period	$ (1,331)	(1,555)	$ (1,331)	(1,555)
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		353		412
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		21		(9)
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		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		(18)		35
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		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		350		388
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		$ 0		$ (2)