v3.26.1
Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning Balance $ 13,811 $ 13,412 $ 14,535 $ 14,434
Ending Balance 14,026 12,868 14,026 12,868
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 (5,564) (5,942) (5,236) (5,994)
OCI before reclassifications (492) 888 (1,257) 2,557
Deferred income tax benefit (expense) 77 (205) 256 (592)
AOCI before reclassifications, net of income tax (5,979) (5,259) (6,237) (5,103)
Amounts reclassified from AOCI 181 (1,018) 508 (1,217)
Deferred income tax benefit (expense) (38) 213 (107) 256
Amounts reclassified from AOCI, net of income tax 143 (805) 401 (961)
Ending Balance (5,836) (6,064) (5,836) (6,064)
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 (7,035) (7,014) (5,226) (8,651)
OCI before reclassifications 661 1,468 (1,734) 3,333
Deferred income tax benefit (expense) (89) (258) 405 (689)
AOCI before reclassifications, net of income tax (6,463) (5,804) (6,555) (5,937)
Amounts reclassified from AOCI 121 66 237 234
Deferred income tax benefit (expense) (26) (14) (50) (49)
Amounts reclassified from AOCI, net of income tax 95 52 187 185
Ending Balance (6,368) (5,752) (6,368) (5,752)
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 184 813 (116) 959
OCI before reclassifications (198) (137) (25) 47
Deferred income tax benefit (expense) 42 29 5 (10)
AOCI before reclassifications, net of income tax 28 705 (136) 996
Amounts reclassified from AOCI 58 (1,086) 266 (1,455)
Deferred income tax benefit (expense) (12) 228 (56) 306
Amounts reclassified from AOCI, net of income tax 46 (858) 210 (1,149)
Ending Balance 74 (153) 74 (153)
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 1,531 549 383 1,972
OCI before reclassifications (918) (438) 500 (795)
Deferred income tax benefit (expense) 115 23 (155) 101
AOCI before reclassifications, net of income tax 728 134 728 134
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 728 134 728 134
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 (14) (4) (51) (30)
OCI before reclassifications (30) (30) 17 3
Deferred income tax benefit (expense) 7 6 (3) (1)
AOCI before reclassifications, net of income tax (37) (28) (37) (28)
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 (37) (28) (37) (28)
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 (83) (154) (76) (111)
OCI before reclassifications (7) 25 (16) (30)
Deferred income tax benefit (expense) 2 (5) 4 7
AOCI before reclassifications, net of income tax (88) (134) (88) (134)
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 (88) (134) (88) (134)
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 (147) (132) (150) (133)
OCI before reclassifications 0 0 1 (1)
Deferred income tax benefit (expense) 0 0 0 0
AOCI before reclassifications, net of income tax (147) (132) (149) (134)
Amounts reclassified from AOCI 2 2 5 4
Deferred income tax benefit (expense) 0 (1) (1) (1)
Amounts reclassified from AOCI, net of income tax 2 1 4 3
Ending Balance $ (145) $ (131) $ (145) (131)
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