v3.25.0.1
Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Changes in Accumulated Other Comprehensive Income (Loss) by Component      
Beginning of year balance $ 76,636 $ 71,769 $ 74,841
Other comprehensive income (loss) 177 967 (1,598)
End of year balance 75,730 76,636 71,769
AOCI Including Portion Attributable to Noncontrolling Interest      
Changes in Accumulated Other Comprehensive Income (Loss) by Component      
Beginning of year balance (297) (1,264) 334
End of year balance (120) (297) (1,264)
Net unrealized investment gains (losses)      
Changes in Accumulated Other Comprehensive Income (Loss) by Component      
Beginning of year balance (429) (1,519) 798
Other comprehensive income (loss) before reclassifications, net of tax (170) 603 (2,556)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 200 487 239
Other comprehensive income (loss) 30 1,090 (2,317)
End of year balance (399) (429) (1,519)
Other comprehensive income (loss) before reclassifications, pre-tax (177) 612 (3,021)
Amounts reclassified from accumulated other comprehensive income (loss), pre-tax 226 566 315
Change in discount rate on long-duration insurance reserves      
Changes in Accumulated Other Comprehensive Income (Loss) by Component      
Beginning of year balance 152 219 (651)
Other comprehensive income (loss) before reclassifications, net of tax 113 (67) 870
Other comprehensive income (loss) 113 (67) 870
End of year balance 265 152 219
Other comprehensive income (loss) before reclassifications, pre-tax 146 (92) 1,126
Foreign currency translation adjustments      
Changes in Accumulated Other Comprehensive Income (Loss) by Component      
Beginning of year balance 0 0 0
Other comprehensive income (loss) before reclassifications, net of tax (4) 0 0
Other comprehensive income (loss) (4) 0 0
End of year balance (4) 0 0
Net cash flow hedges      
Changes in Accumulated Other Comprehensive Income (Loss) by Component      
Beginning of year balance 244 239 222
Other comprehensive income (loss) before reclassifications, net of tax 0 19 28
Amounts reclassified from accumulated other comprehensive income (loss), net of tax (15) (14) (11)
Other comprehensive income (loss) (15) 5 17
End of year balance 229 244 239
Other comprehensive income (loss) before reclassifications, pre-tax 0 25 38
Amounts reclassified from accumulated other comprehensive income (loss), pre-tax (20) (19) (15)
Amount expected to be reclassified 16    
Pension and other postretirement benefits      
Changes in Accumulated Other Comprehensive Income (Loss) by Component      
Beginning of year balance (264) (203) (35)
Other comprehensive income (loss) before reclassifications, net of tax 53 (61) (170)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 0 0 2
Other comprehensive income (loss) 53 (61) (168)
End of year balance (211) (264) (203)
Other comprehensive income (loss) before reclassifications, pre-tax 71 (81) (229)
Amounts reclassified from accumulated other comprehensive income (loss), pre-tax $ 0 $ 0 $ 3