v3.26.1
Financial Instruments - Schedule of Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: $ 19,280 $ 31,482
Marketable securities: 53,431  
Marketable equity securities 4,323 5,992
Total marketable securities 57,754 45,719
Restricted cash equivalents 7,425 2,539
Other assets 113 106
Total 84,572 79,846
Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Restricted cash equivalents 5,000  
U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 30,916 21,483
U.S. government agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 888 767
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 21,627 17,477
Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 14,372 27,928
U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 1,867 1,623
Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 504 328
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 2,537 1,603
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 16,239 29,551
Marketable equity securities 4,323 5,992
Total marketable securities 36,127 28,242
Restricted cash equivalents 7,425 2,539
Other assets 0 0
Total 59,791 60,332
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 30,916 21,483
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 888 767
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 14,372 27,928
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 1,867 1,623
Quoted Prices in Active Markets for Identical Assets (Level 1) | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 3,041 1,931
Marketable equity securities 0 0
Total marketable securities 21,627 17,477
Restricted cash equivalents 0 0
Other assets 0 0
Total 24,668 19,408
Significant Other Observable Inputs (Level 2) | U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 0 0
Significant Other Observable Inputs (Level 2) | U.S. government agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 0 0
Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 21,627 17,477
Significant Other Observable Inputs (Level 2) | Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Significant Other Observable Inputs (Level 2) | U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Significant Other Observable Inputs (Level 2) | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 504 328
Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 2,537 1,603
Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Marketable equity securities 0 0
Total marketable securities 0 0
Restricted cash equivalents 0 0
Other assets 113 106
Total 113 106
Significant Unobservable Inputs (Level 3) | U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 0 0
Significant Unobservable Inputs (Level 3) | U.S. government agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 0 0
Significant Unobservable Inputs (Level 3) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 0 0
Significant Unobservable Inputs (Level 3) | Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Significant Unobservable Inputs (Level 3) | U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Significant Unobservable Inputs (Level 3) | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 0 0
Significant Unobservable Inputs (Level 3) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: $ 0 $ 0