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Fair Value Measurements - Financial Instruments Not Required to be Measured at Fair Value (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Carrying Value | Level 2    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Marketable securities, current $ 64 $ 185
Carrying Value | Level 2 | 2023 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 0 138
Carrying Value | Level 2 | 2024 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 266 380
Carrying Value | Level 2 | 2028 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 597 596
Carrying Value | Level 2 | 2029 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 560 0
Carrying Value | Level 2 | Other borrowings, including noncurrent portion    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 20 16
Carrying Value | Level 3    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Notes receivable, including noncurrent portion 9 9
Fair Value | Level 2    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Marketable securities, current 64 185
Fair Value | Level 2 | 2023 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 0 138
Fair Value | Level 2 | 2024 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 367 370
Fair Value | Level 2 | 2028 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 550 545
Fair Value | Level 2 | 2029 Notes    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 596 0
Fair Value | Level 2 | Other borrowings, including noncurrent portion    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Debt 20 16
Fair Value | Level 3    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Notes receivable, including noncurrent portion 9 9
Cash | Carrying Value | Level 1    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Cash and cash equivalents 1,436 1,262
Cash | Fair Value | Level 1    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Cash and cash equivalents 1,436 1,262
Cash Equivalents | Carrying Value | Level 2    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Cash and cash equivalents 985 1,177
Cash Equivalents | Fair Value | Level 2    
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis    
Cash and cash equivalents $ 985 $ 1,177