v3.26.1
Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net investment gains (losses) $ (407)   $ (322)   $ (632) $ (607)
Net derivative gains (losses) (307)   (584)   93 (630)
Net investment income 3,014   2,806   6,114 5,682
Income (loss) before provision for income tax 575   221   1,630 607
Income tax (expense) benefit (90)   (27)   (289) (78)
Net income (loss) 485 $ 856 194 $ 335 1,341 529
Reclassification out of Accumulated Other Comprehensive Income            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net income (loss) (143)   805   (401) 961
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Investment Gains (Losses), Net of Related Offsets            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net investment gains (losses) (122)   (65)   (244) (227)
Net derivative gains (losses) 1   0   7 (6)
Net investment income 0   (1)   0 (1)
Income (loss) before provision for income tax (121)   (66)   (237) (234)
Income tax (expense) benefit 26   14   50 49
Net income (loss) (95)   (52)   (187) (185)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Income (loss) before provision for income tax (58)   1,086   (266) 1,455
Income tax (expense) benefit 12   (228)   56 (306)
Net income (loss) (46)   858   (210) 1,149
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Interest rate contracts            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net investment gains (losses) (11)   9   (10) 9
Net investment income 1   6   2 26
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Foreign currency swaps            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net investment gains (losses) (49)   1,070   (260) 1,418
Net investment income 1   1   2 2
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Plans Adjustment            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Amortization of net actuarial gains (losses) (3)   (3)   (6) (5)
Amortization of prior service (costs) credit 1   1   1 1
Income (loss) before provision for income tax (2)   (2)   (5) (4)
Income tax (expense) benefit 0   1   1 1
Net income (loss) $ (2)   $ (1)   $ (4) $ (3)