Annual report [Section 13 and 15(d), not S-K Item 405]

Debt (Debt Securities Not Reported At Fair Value) (Details)

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Debt (Debt Securities Not Reported At Fair Value) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Senior Debentures    
Debt Instrument [Line Items]    
Fair value of debt securities that are not reported at fair value $ 846 $ 1,942