v3.26.3
Derivatives - Offsetting Derivative Assets and Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Derivative [Line Items]    
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Investments Other Investments
Asset Derivatives $ 51 $ 60
Derivative assets 7 20
Gross Amounts of Recognized (Liabilities) (44) (60)
Derivative Liability (14) (20)
Other liabilities    
Derivative [Line Items]    
Derivative, Collateral, Obligation to Return Cash 31 2
Gross Amounts of Recognized (Liabilities) (44) (60)
Gross Amounts Offset in the Statement of Financial Position, liabilities (27) (38)
Derivative Liability 14 (20)
Financial Collateral (Received) (16) (21)
Net amount, liabilities (1) (1)
Other Investments [Member]    
Derivative [Line Items]    
Asset Derivatives 51 60
Gross Amounts Offset in the Statement of Financial Position, assets 45 58
Derivative assets (7) 20
Derivative, Collateral, Obligation to Return Cash (13) 18
Financial Collateral Pledged 6 1
Net Amount, assets $ 0 $ 1