Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 28,796	$ 32,423	$ 30,253	$ 30,125
Ending Balance	27,540	30,492	27,540	30,492
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(19,771)	(19,147)	(19,242)	(22,621)
OCI before reclassifications	(1,463)	(2,372)	(2,525)	1,607
Deferred income tax benefit (expense)	354	513	463	(354)
AOCI before reclassifications, net of income tax	(20,880)	(21,006)	(21,304)	(21,368)
Amounts reclassified from AOCI	283	801	817	1,265
Deferred income tax benefit (expense)	(139)	(181)	(249)	(283)
Amounts reclassified from AOCI, net of income tax	144	620	568	982
Ending Balance	(20,736)	(20,386)	(20,736)	(20,386)
Unrealized Investment Gains (Losses), Net of Related Offsets
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(16,813)	(16,354)	(14,506)	(22,646)
OCI before reclassifications	(3,373)	(3,173)	(6,492)	4,410
Deferred income tax benefit (expense)	810	739	1,509	(989)
AOCI before reclassifications, net of income tax	(19,376)	(18,788)	(19,489)	(19,225)
Amounts reclassified from AOCI	248	1,040	393	1,606
Deferred income tax benefit (expense)	(59)	(231)	(91)	(360)
Amounts reclassified from AOCI, net of income tax	189	809	302	1,246
Ending Balance	(19,187)	(17,979)	(19,187)	(17,979)
Unrealized Gains (Losses) on Derivatives
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	202	1,748	183	1,557
OCI before reclassifications	(160)	(468)	(501)	(81)
Deferred income tax benefit (expense)	128	114	204	17
AOCI before reclassifications, net of income tax	170	1,394	(114)	1,493
Amounts reclassified from AOCI	3	(269)	360	(401)
Deferred income tax benefit (expense)	(74)	54	(147)	87
Amounts reclassified from AOCI, net of income tax	(71)	(215)	213	(314)
Ending Balance	99	1,179	99	1,179
FPBs Discount Rate Remeasurement Gains (Losses)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	4,773	2,748	2,658	6,115
OCI before reclassifications	2,373	1,471	5,084	(2,898)
Deferred income tax benefit (expense)	(540)	(300)	(1,136)	702
AOCI before reclassifications, net of income tax	6,606	3,919	6,606	3,919
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
Ending Balance	6,606	3,919	6,606	3,919
MRBs Instrument Specific Credit Risk Remeasurement Gains (Losses)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(47)	186	27	107
OCI before reclassifications	(33)	(99)	(127)	1
Deferred income tax benefit (expense)	7	21	27	0
AOCI before reclassifications, net of income tax	(73)	108	(73)	108
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
Ending Balance	(73)	108	(73)	108
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(6,465)	(6,119)	(6,158)	(6,377)
OCI before reclassifications	(268)	(102)	(485)	180
Deferred income tax benefit (expense)	(52)	(61)	(142)	(85)
AOCI before reclassifications, net of income tax	(6,785)	(6,282)	(6,785)	(6,282)
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
Ending Balance	(6,785)	(6,282)	(6,785)	(6,282)
Defined Benefit Plans Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1,421)	(1,356)	(1,446)	(1,377)
OCI before reclassifications	(2)	(1)	(4)	(5)
Deferred income tax benefit (expense)	1	0	1	1
AOCI before reclassifications, net of income tax	(1,422)	(1,357)	(1,449)	(1,381)
Amounts reclassified from AOCI	32	30	64	60
Deferred income tax benefit (expense)	(6)	(4)	(11)	(10)
Amounts reclassified from AOCI, net of income tax	26	26	53	50
Ending Balance	$ (1,396)	$ (1,331)	$ (1,396)	$ (1,331)