v3.26.1
Marketable and Other Securities - Fair Value of Cash Equivalents and Marketable Debt Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities $ 9,282  
Total cash and cash equivalents 19,800 $ 20,945
Cash and cash equivalents 440 357
Total restricted cash 4,263 3,339
Due in one year or less 5,934  
Due between one and five years 3,348  
Total available-for-sale debt securities with contractual maturities 9,282  
Cash and cash equivalents    
Summary of Investment Holdings [Line Items]    
Cash and time deposits 11,160 10,884
Total available-for-sale debt securities with contractual maturities 5,214 4,691
Total available-for-sale debt securities with contractual maturities 5,214 4,691
Cash and cash equivalents | Level 2 | U.S. government and agencies    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 452 451
Total available-for-sale debt securities with contractual maturities 452 451
Cash and cash equivalents | Level 2 | Corporate debt    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 3,794 3,317
Total available-for-sale debt securities with contractual maturities 3,794 3,317
Cash and cash equivalents | Level 2 | Sovereign debt    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 968 923
Total available-for-sale debt securities with contractual maturities 968 923
Cash and cash equivalents | Level 1    
Summary of Investment Holdings [Line Items]    
Money market funds 3,427 5,369
Marketable debt securities    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 4,618 6,724
Total available-for-sale debt securities with contractual maturities 4,618 6,724
Marketable debt securities | Level 2 | U.S. government and agencies    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 631 2,370
Total available-for-sale debt securities with contractual maturities 631 2,370
Marketable debt securities | Level 2 | Corporate debt and other    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 3,480 3,796
Total available-for-sale debt securities with contractual maturities 3,480 3,796
Marketable debt securities | Level 2 | Mortgage and asset-backed    
Summary of Investment Holdings [Line Items]    
Total available-for-sale debt securities with contractual maturities 507 558
Total available-for-sale debt securities with contractual maturities 507 558
Other Current Assets | Level 1    
Summary of Investment Holdings [Line Items]    
Money market funds $ 3,822 $ 2,981