Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 27,703	$ 30,253
Ending Balance	27,755	28,796
Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1,074)	(219)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(21,186)	(19,242)
OCI before reclassifications	2,662	(1,062)
Deferred income tax benefit (expense)	(558)	109
AOCI before reclassifications, net of income tax	(20,156)	(20,195)
Amounts reclassified from AOCI	(107)	534
Deferred income tax benefit (expense)	15	(110)
Amounts reclassified from AOCI, net of income tax	(92)	424
Ending Balance	(20,248)	(19,771)
Accumulated Other Comprehensive Income (Loss) | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1,074)
Unrealized Investment Gains (Losses), Net of Related Offsets
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(19,402)	(14,506)
OCI before reclassifications	2,204	(3,119)
Deferred income tax benefit (expense)	(388)	699
AOCI before reclassifications, net of income tax	(17,516)	(16,926)
Amounts reclassified from AOCI	241	145
Deferred income tax benefit (expense)	(54)	(32)
Amounts reclassified from AOCI, net of income tax	187	113
Ending Balance	(17,329)	(16,813)
Unrealized Investment Gains (Losses), Net of Related Offsets | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	70
Unrealized Gains (Losses) on Derivatives
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	370	183
OCI before reclassifications	217	(341)
Deferred income tax benefit (expense)	(105)	76
AOCI before reclassifications, net of income tax	482	(82)
Amounts reclassified from AOCI	(379)	357
Deferred income tax benefit (expense)	76	(73)
Amounts reclassified from AOCI, net of income tax	(303)	284
Ending Balance	179	202
Unrealized Gains (Losses) on Derivatives | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	0
FPBs Discount Rate Remeasurement Gains (Losses)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	6,529	2,658
OCI before reclassifications	48	2,711
Deferred income tax benefit (expense)	(99)	(596)
AOCI before reclassifications, net of income tax	5,334	4,773
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Ending Balance	5,334	4,773
FPBs Discount Rate Remeasurement Gains (Losses) | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1,144)
MRBs Instrument- Specific Credit Risk Remeasurement Gains (Losses)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(71)	27
OCI before reclassifications	51	(94)
Deferred income tax benefit (expense)	(11)	20
AOCI before reclassifications, net of income tax	(31)	(47)
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Ending Balance	(31)	(47)
MRBs Instrument- Specific Credit Risk Remeasurement Gains (Losses) | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	0
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(7,170)	(6,158)
OCI before reclassifications	140	(217)
Deferred income tax benefit (expense)	45	(90)
AOCI before reclassifications, net of income tax	(6,985)	(6,465)
Amounts reclassified from AOCI	0	0
Deferred income tax benefit (expense)	0	0
Amounts reclassified from AOCI, net of income tax	0	0
Ending Balance	(6,985)	(6,465)
Foreign Currency Translation Adjustments | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	0
Defined Benefit Plans Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1,442)	(1,446)
OCI before reclassifications	2	(2)
Deferred income tax benefit (expense)	0	0
AOCI before reclassifications, net of income tax	(1,440)	(1,448)
Amounts reclassified from AOCI	31	32
Deferred income tax benefit (expense)	(7)	(5)
Amounts reclassified from AOCI, net of income tax	24	27
Ending Balance	(1,416)	$ (1,421)
Defined Benefit Plans Adjustment | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 0