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Fair Value Information (Fair Value of Financial Instruments) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Inputs, Level 1 | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Cash and cash equivalents $ 1,021 $ 1,093
Time Deposits 196 169
Fair Value, Inputs, Level 1 | Carrying (Reported) Amount, Fair Value Disclosure    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Cash and cash equivalents 1,021 1,093
Time Deposits 196 169
Fair Value, Inputs, Level 2 | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Short-term debt 3 2
Long-term Debt, Fair Value 6,853 7,569
Non-US government bonds Fair Value Disclosure 15 0
Fair Value, Inputs, Level 2 | Carrying (Reported) Amount, Fair Value Disclosure    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Short-term debt 3 2
Long-term Debt, Fair Value 7,440 7,982
Non-US government bonds Fair Value Disclosure $ 15 $ 0