Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ (17,372)	$ 12,309	$ 10,919	$ 18,072
OCI before reclassifications	(15,315)	(607)	(53,738)	(7,843)
Deferred income tax benefit (expense)	3,287	101	11,641	1,581
AOCI before reclassifications, net of income tax	(29,400)	11,803	(31,178)	11,810
Amounts reclassified from AOCI	932	175	2,723	264
Deferred income tax benefit (expense)	(227)	(35)	(616)	(56)
Amounts reclassified from AOCI, net of income tax	705	140	2,107	208
Balance, end of period	(28,695)	12,111	(28,695)	12,111
Unrealized Investment Gains (Losses), Net of Related Offsets
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(11,304)	17,535	16,042	22,217
OCI before reclassifications	(15,523)	(633)	(51,978)	(6,512)
Deferred income tax benefit (expense)	3,521	208	11,866	1,584
AOCI before reclassifications, net of income tax	(23,306)	17,110	(24,070)	17,289
Amounts reclassified from AOCI	343	(91)	1,346	(76)
Deferred income tax benefit (expense)	(77)	22	(307)	18
Amounts reclassified from AOCI, net of income tax	266	(69)	1,039	(58)
Balance, end of period	(23,040)	17,063	(23,040)	17,063
Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	1,847	1,073	1,629	1,513
OCI before reclassifications	975	442	509	(172)
Deferred income tax benefit (expense)	(211)	(102)	(116)	39
AOCI before reclassifications, net of income tax	2,611	1,413	2,022	1,380
Amounts reclassified from AOCI	566	236	1,307	279
Deferred income tax benefit (expense)	(145)	(54)	(297)	(64)
Amounts reclassified from AOCI, net of income tax	421	182	1,010	215
Balance, end of period	3,032	1,595	3,032	1,595
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(6,360)	(4,463)	(5,154)	(3,795)
OCI before reclassifications	(768)	(421)	(2,276)	(1,168)
Deferred income tax benefit (expense)	(23)	(4)	(108)	(40)
AOCI before reclassifications, net of income tax	(7,151)	(4,888)	(7,538)	(5,003)
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	(7,151)	(4,742)	(7,151)	(4,742)
Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(1,555)	(1,836)	(1,598)	(1,863)
OCI before reclassifications	1	5	7	9
Deferred income tax benefit (expense)	0	(1)	(1)	(2)
AOCI before reclassifications, net of income tax	(1,554)	(1,832)	(1,592)	(1,856)
Amounts reclassified from AOCI	23	30	70	61
Deferred income tax benefit (expense)	(5)	(3)	(12)	(10)
Amounts reclassified from AOCI, net of income tax	18	27	58	51
Balance, end of period	$ (1,536)	(1,805)	(1,536)	(1,805)
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		168	376	93
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		22	(9)	(168)
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
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		146	387	261
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)	$ 0