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Fair Value of Financial Instruments - Estimated Carrying Amounts and Fair Value of Long-term Debt (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Total long-term debt, including current portion $ 10,858 $ 10,940
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Total long-term debt, including current portion 10,729 10,794
Carrying Amount | Convertible Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Total long-term debt, including current portion 232 575
Carrying Amount | Other long-term debt, including current portion    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Total long-term debt, including current portion 10,497 10,219
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Total long-term debt, including current portion 10,927 10,574
Fair Value | Convertible Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Total long-term debt, including current portion 515 739
Fair Value | Other long-term debt, including current portion    
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Total long-term debt, including current portion $ 10,412 $ 9,835