v3.26.1
Market Risk Benefits - Balances of and Changes in Market Risk Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Market Risk Benefit [Roll Forward]      
Beginning balance $ (1,092) $ (919) $ (919)
Issuances 7 5 23
Interest accrual and time decay (21) (18) (116)
Reserve increase from attributed fees collected 177 181 761
Reserve release for benefit payments and derecognition (3) (2) (9)
Effect of changes in interest rates and bond markets (5) 269 (51)
Effect of changes in equity markets and subaccount performance 297 322 (1,006)
Effect of changes in equity index volatility 83 25 90
Actual policyholder behavior different from expected behavior 20 25 68
Effect of changes in future expected assumptions 0 (1) 93
Effect of changes in the instrument-specific credit risk on market risk benefits (38) (1) (26)
Ending balance (575) (114) (1,092)
Reconciliation of the gross balances in an asset or liability position:      
Asset position 1,934 1,742 2,274
Liability position (1,359) (1,628) (1,182)
Net asset (liability) position $ 575 $ 114 $ 1,092
Weighted average attained age of contractholders 70 years 69 years 70 years
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period $ 347 $ 603 $ (966)
Changes in unrealized (gains) losses in other comprehensive income (loss) relating to liabilities held at end of period (37) 0 (20)
Death benefits      
Reconciliation of the gross balances in an asset or liability position:      
Guaranteed benefit amount in excess of current account balances (net amount at risk) 424 626 291
Living benefits      
Reconciliation of the gross balances in an asset or liability position:      
Guaranteed benefit amount in excess of current account balances (net amount at risk) 2,379 2,761 1,811
Composite (greater of)      
Reconciliation of the gross balances in an asset or liability position:      
Guaranteed benefit amount in excess of current account balances (net amount at risk) $ 2,773 $ 3,318 $ 2,084