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Marketable and Other Securities - Fair Value of Cash Equivalents and Marketable Securities (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities $ 14,038  
Total cash and cash equivalents 23,074 $ 19,153
Cash and cash equivalents 379 341
Total restricted cash 3,680 2,796
Due in one year or less 8,364  
Due between one and five years 5,675  
Total available-for-sale debt securities with contractual maturities 14,038  
Cruise    
Summary of Investment Holdings [Line Items]    
Total cash and cash equivalents 1,900 1,500
Cash and cash equivalents    
Summary of Investment Holdings [Line Items]    
Cash and time deposits 10,542 8,921
Total available-for-sale debt securities with contractual maturities 5,155 5,618
Total available-for-sale debt securities with contractual maturities 5,155 5,618
Cash and cash equivalents | Level 1    
Summary of Investment Holdings [Line Items]    
Money market funds 7,377 4,613
Marketable debt securities    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 9,556 12,150
Total available-for-sale debt securities with contractual maturities 9,556 12,150
Marketable debt securities | Cruise    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 215 1,400
Total available-for-sale debt securities with contractual maturities 215 1,400
Other current assets | Level 1    
Summary of Investment Holdings [Line Items]    
Money market funds 3,301 2,455
U.S. government and agencies | Cash and cash equivalents | Level 2    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 19 1,012
Total available-for-sale debt securities with contractual maturities 19 1,012
U.S. government and agencies | Marketable debt securities | Level 2    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 3,910 4,357
Total available-for-sale debt securities with contractual maturities 3,910 4,357
Corporate debt | Cash and cash equivalents | Level 2    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 3,731 2,778
Total available-for-sale debt securities with contractual maturities 3,731 2,778
Corporate debt | Marketable debt securities | Level 2    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 3,687 5,147
Total available-for-sale debt securities with contractual maturities 3,687 5,147
Mortgage and asset-backed | Marketable debt securities | Level 2    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 588 538
Total available-for-sale debt securities with contractual maturities 588 538
Sovereign debt | Cash and cash equivalents | Level 2    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 1,404 1,828
Total available-for-sale debt securities with contractual maturities 1,404 1,828
Sovereign debt | Marketable debt securities | Level 2    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 1,372 2,108
Total available-for-sale debt securities with contractual maturities $ 1,372 $ 2,108