v3.26.1
Fair Value of Financial Instruments - Changes in Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried at Fair Value and Still Held (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Trading securities        
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]        
Changes in unrealized gains (losses) included in net income $ 0 $ 3 $ (2) $ 0
Equity securities        
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]        
Changes in unrealized gains (losses) included in net income (2) (1) (5) (7)
Mortgage loans on real estate        
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]        
Changes in unrealized gains (losses) included in net income (2) (1) (1) (2)
Derivative investments        
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]        
Changes in unrealized gains (losses) included in net income (4) (6) (26) (6)
MRBs        
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]        
Changes in unrealized gains (losses) included in net income 1,454 933 460 (367)
Reinsurance-related embedded derivatives        
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]        
Changes in unrealized gains (losses) included in net income (84) 14 98 (75)
Indexed annuity ceded embedded derivatives        
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]        
Changes in unrealized gains (losses) included in net income $ 365 $ 206 $ 733 $ 375