v3.26.1
Benefit Plans - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Defined Benefit Plan Disclosure [Line Items]          
Remeasurement (gains) losses $ (146) $ 0 $ (127) $ 78  
Pension benefits          
Defined Benefit Plan Disclosure [Line Items]          
Remeasurement (gains) losses $ (147) $ 1 $ (126) $ 77  
Discount rate (as a percent) 5.73%   5.73%   5.52%