v3.26.1
Financial Instruments - Debt Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents $ 1,848 $ 1,545
Marketable securities 3,895 4,233
Long-term investments 708 975
Equity and Other Investments 3,533 4,582
Levels 1, 2 and 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 56 1
Marketable securities 3,895 4,233
Long-term investments 708 975
Equity and Other Investments 567 558
Fair Value 5,234 5,782
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 56 1
Marketable securities 2,202 2,443
Long-term investments 484 527
Equity and Other Investments 0 0
Fair Value 2,751 2,984
Level 1 | U.S. term deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 0 0
Marketable securities 520 520
Long-term investments 0 0
Equity and Other Investments 0 0
Fair Value 531 531
Level 1 | U.S. federal bonds and agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 56 1
Marketable securities 1,682 1,923
Long-term investments 484 527
Equity and Other Investments 0 0
Fair Value 2,220 2,453
Level 2 | Corporate bonds and commercial paper    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 0 0
Marketable securities 1,693 1,790
Long-term investments 224 448
Equity and Other Investments 0 0
Fair Value 1,916 2,240
Level 3 | Convertible notes in private companies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 0 0
Marketable securities 0 0
Long-term investments 0 0
Equity and Other Investments 567 558
Fair Value $ 567 $ 558