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Financial Instruments - Schedule of Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | $ 31,482 | $ 36,671
Marketable securities: | 39,727 |
Marketable equity securities | 5,992 | 1,226
Total marketable securities | 45,719 | 33,926
Restricted cash equivalents | 2,539 | 1,193
Other assets | 106 | 101
Total | 79,846 | 71,891
U.S. government securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Marketable securities: | 21,483 | 14,889
U.S. government agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Marketable securities: | 767 | 3,053
Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Marketable securities: | 17,477 | 14,758
Money market funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 27,928 | 36,165
U.S. government securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 1,623 |
Time deposits |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 328 | 369
Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 1,603 | 114
U.S. government and agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: |  | 23
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 29,551 | 36,188
Marketable equity securities | 5,992 | 1,226
Total marketable securities | 28,242 | 19,168
Restricted cash equivalents | 2,539 | 1,193
Other assets | 0 | 0
Total | 60,332 | 56,549
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: | 21,483 | 14,889
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: | 767 | 3,053
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: | 27,928 | 36,165
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: | 1,623 |
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
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government and agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: |  | 23
Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 1,931 | 483
Marketable equity securities | 0 | 0
Total marketable securities | 17,477 | 14,758
Restricted cash equivalents | 0 | 0
Other assets | 0 | 0
Total | 19,408 | 15,241
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: | 17,477 | 14,758
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 |
Significant Other Observable Inputs (Level 2) | Time deposits |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 328 | 369
Significant Other Observable Inputs (Level 2) | Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: | 1,603 | 114
Significant Other Observable Inputs (Level 2) | U.S. government and agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: |  | 0
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 | 106 | 101
Total | 106 | 101
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 |
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
Significant Unobservable Inputs (Level 3) | U.S. government and agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Cash equivalents: |  | $ 0

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