v3.25.2
Debt (Estimated Fair Value of Significant Financial Instruments) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt $ 769 $ 519
Long-term debt 18,960 19,428
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term debt 767 518
Long-term debt $ 18,613 $ 18,734