v3.25.4
Retirement Plans (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Actual return $ (3) $ 22
(Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Actual return (3)  
Estimated future employer contributions in next fiscal year $ 24