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	$ (1,912)	$ 10,397	$ 10,919	$ 18,072
OCI before reclassifications	(21,359)	2,934	(38,423)	(7,236)
Deferred income tax benefit (expense)	4,486	(742)	8,354	1,480
AOCI before reclassifications, net of income tax	(18,785)	12,589	(19,150)	12,316
Amounts reclassified from AOCI	1,334	(129)	1,791	89
Deferred income tax benefit (expense)	(291)	25	(389)	(21)
Amounts reclassified from AOCI, net of income tax	1,043	(104)	1,402	68
Balance, end of period	(17,372)	12,309	(17,372)	12,309
Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	3,718	16,194	16,042	22,217
OCI before reclassifications	(20,082)	2,099	(36,455)	(5,879)
Deferred income tax benefit (expense)	4,512	(570)	8,345	1,376
AOCI before reclassifications, net of income tax	(11,852)	17,723	(12,068)	17,714
Amounts reclassified from AOCI	682	(15)	1,003	15
Deferred income tax benefit (expense)	(155)	3	(230)	(4)
Amounts reclassified from AOCI, net of income tax	527	(12)	773	11
Balance, end of period	(11,304)	17,535	(11,304)	17,535
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	1,464	518	1,629	1,513
OCI before reclassifications	(154)	828	(466)	(614)
Deferred income tax benefit (expense)	40	(169)	95	141
AOCI before reclassifications, net of income tax	1,350	1,177	1,258	1,040
Amounts reclassified from AOCI	629	(131)	741	43
Deferred income tax benefit (expense)	(132)	27	(152)	(10)
Amounts reclassified from AOCI, net of income tax	497	(104)	589	33
Balance, end of period	1,847	1,073	1,847	1,073
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(5,517)	(4,467)	(5,154)	(3,795)
OCI before reclassifications	(1,126)	6	(1,508)	(747)
Deferred income tax benefit (expense)	(66)	(2)	(85)	(36)
AOCI before reclassifications, net of income tax	(6,709)	(4,463)	(6,747)	(4,578)
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	(6,360)	(4,463)	(6,360)	(4,463)
Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,577)	(1,848)	(1,598)	(1,863)
OCI before reclassifications	3	1	6	4
Deferred income tax benefit (expense)	0	(1)	(1)	(1)
AOCI before reclassifications, net of income tax	(1,574)	(1,848)	(1,593)	(1,860)
Amounts reclassified from AOCI	23	17	47	31
Deferred income tax benefit (expense)	(4)	(5)	(7)	(7)
Amounts reclassified from AOCI, net of income tax	19	12	40	24
Balance, end of period	(1,555)	(1,836)	(1,555)	(1,836)
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	370	(176)	376	(75)
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	(176)	(9)	(190)
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	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	349	0	387	115
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	$ 0	$ (2)	$ 0