v3.25.4
Debt (Estimated Fair Value of Significant Financial Instruments) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt $ 1,267 $ 519
Long-term debt 18,320 19,428
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt 1,261 518
Long-term debt $ 18,093 $ 18,734