v3.25.4
Financial Instruments and Derivatives (Narrative) (Details) - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Realized and Unrealized Before-Tax Gain / (Loss) on Derivative Instruments Recognized in the Consolidated Statement of Income      
Initial margin collateral receivable $ 0.5 $ 0.5  
Not Designated As Hedging Instrument, Trading | Sales and other operating revenue      
Realized and Unrealized Before-Tax Gain / (Loss) on Derivative Instruments Recognized in the Consolidated Statement of Income      
Total $ 1.1 $ (0.7) $ 1.0