v3.26.1
Financial Instruments - Schedule of Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: $ 12,133 $ 31,482
Marketable securities: 71,255  
Marketable equity securities 3,543 5,992
Total marketable securities 74,798 45,719
Restricted cash equivalents 13,554 2,539
Other assets 114 106
Total 100,599 79,846
U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 41,724 21,483
U.S. government agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 940 767
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Marketable securities: 28,591 17,477
Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 5,223 27,928
U.S. government securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 2,077 1,623
Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 350 328
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 4,483 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: 7,300 29,551
Marketable equity securities 3,543 5,992
Total marketable securities 46,207 28,242
Restricted cash equivalents 13,554 2,539
Other assets 0 0
Total 67,061 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: 41,724 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: 940 767
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: 5,223 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: 2,077 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: 4,833 1,931
Marketable equity securities 0 0
Total marketable securities 28,591 17,477
Restricted cash equivalents 0 0
Other assets 0 0
Total 33,424 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: 28,591 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: 350 328
Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents: 4,483 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 114 106
Total 114 106
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