v3.26.1
Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning Balance $ 28,680 $ 27,703
Ending Balance 27,595 27,755
Cumulative Effect, Period of Adoption, Adjustment    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning Balance   (1,074)
Accumulated Other Comprehensive Income (Loss)    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning Balance (18,084) (21,186)
OCI before reclassifications (1,942) 2,662
Deferred income tax benefit (expense) 419 (558)
AOCI before reclassifications, net of income tax (19,607) (20,156)
Amounts reclassified from AOCI 496 (107)
Deferred income tax benefit (expense) (116) 15
Amounts reclassified from AOCI, net of income tax 380 (92)
Ending Balance (19,227) (20,248)
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 (15,614) (19,402)
OCI before reclassifications (5,098) 2,204
Deferred income tax benefit (expense) 1,164 (388)
AOCI before reclassifications, net of income tax (19,548) (17,516)
Amounts reclassified from AOCI 226 241
Deferred income tax benefit (expense) (58) (54)
Amounts reclassified from AOCI, net of income tax 168 187
Ending Balance (19,380) (17,329)
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 (1,588) 370
OCI before reclassifications 499 217
Deferred income tax benefit (expense) (119) (105)
AOCI before reclassifications, net of income tax (1,208) 482
Amounts reclassified from AOCI 246 (379)
Deferred income tax benefit (expense) (53) 76
Amounts reclassified from AOCI, net of income tax 193 (303)
Ending Balance (1,015) 179
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 6,871 6,529
OCI before reclassifications 2,722 48
Deferred income tax benefit (expense) (592) (99)
AOCI before reclassifications, net of income tax 9,001 5,334
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 9,001 5,334
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 (97) (71)
OCI before reclassifications 52 51
Deferred income tax benefit (expense) (11) (11)
AOCI before reclassifications, net of income tax (56) (31)
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 (56) (31)
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 (6,263) (7,170)
OCI before reclassifications (117) 140
Deferred income tax benefit (expense) (23) 45
AOCI before reclassifications, net of income tax (6,403) (6,985)
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 (6,403) (6,985)
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 (1,393) (1,442)
OCI before reclassifications 0 2
Deferred income tax benefit (expense) 0 0
AOCI before reclassifications, net of income tax (1,393) (1,440)
Amounts reclassified from AOCI 24 31
Deferred income tax benefit (expense) (5) (7)
Amounts reclassified from AOCI, net of income tax 19 24
Ending Balance $ (1,374) (1,416)
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