v3.26.3
Fair Value of Financial Instruments (Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Parenthetical) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Corporate Obligations [Member] | Loans Carried at Fair Value [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans receivable at fair value $ 19 $ 17 $ 16