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Fair Value Measurements - Additional Information (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents $ 5,800 $ 17,700
Restricted cash 1,200 1,400
Level 1 | Corporate Bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of debt 13,400  
Level 2 | Other Long-term Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of debt 373  
Carrying Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, net carrying value 15,300 16,300
Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, net carrying value $ 13,800 $ 15,000
Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Maturity period of primarily bank time deposits, maximum, classified as cash equivalents and money market funds (in days) 90 days