v3.24.1.u1
Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance $ 46,244 $ 44,688
Other comprehensive loss, net of tax (460) (111)
Less: Net translation (loss) on foreign currencies attributable to noncontrolling interests 0 0
Shareholders other comprehensive income (loss), net of tax (460) (111)
Balance 41,350 44,518
Accumulated Other Comprehensive (Loss)    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (1,864) (1,658)
Shareholders other comprehensive income (loss), net of tax (460) (111)
Balance (2,324) (1,769)
Securities and Derivatives    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance 171 (332)
Other comprehensive income (loss) before reclassifications, before tax 143 252
Other comprehensive income (loss), before reclassifications, tax (39) (54)
Other comprehensive income (loss) before reclassifications, after-tax 104 198
Reclassification adjustment, tax (5) 1
Net amounts reclassified from AOCI to net income 17 (4)
Shareholders other comprehensive income (loss), net of tax 121 194
Balance 292 (138)
Reclassification adjustment for losses (gains) included in Shareholders' net (loss) income (Net realized investment losses)    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Reclassification adjustment, before tax 22 (5)
Net long-duration insurance and contractholder liabilities measurement adjustments    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (971) (256)
Shareholders other comprehensive income (loss), net of tax (560) (331)
Balance (1,531) (587)
Current period change in discount rate for certain long-duration liabilities    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Other comprehensive income (loss) before reclassifications, before tax (732) (411)
Other comprehensive income (loss), before reclassifications, tax 186 101
Other comprehensive income (loss) before reclassifications, after-tax (546) (310)
Current period change in instrument-specific credit risk for market risk benefits    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Other comprehensive income (loss) before reclassifications, before tax (18) (26)
Other comprehensive income (loss), before reclassifications, tax 4 5
Other comprehensive income (loss) before reclassifications, after-tax (14) (21)
Translation of foreign currencies including portion attributable to noncontrolling interest    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Translation of foreign currencies, before tax (24) 15
Other Comprehensive Income (Loss), Tax, Including Temporary Equity (2) 1
Other comprehensive loss, net of tax (26) 16
Translation of foreign currencies attributable to parent    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (149) (154)
Balance (175) (138)
Postretirement benefits liability    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (915) (916)
Reclassification adjustment, tax (3) (3)
Shareholders other comprehensive income (loss), net of tax 5 10
Balance (910) (906)
Reclassification adjustment for amortization of net prior actuarial losses and prior service costs (Interest expense and other)    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Reclassification adjustment, before tax $ 8 $ 13