v3.25.2
Financial Instruments - Debt Securities (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents $ 1,542 $ 1,498
Marketable securities 4,278 3,981
Long-term investments 831 709
Equity and Other Investments 4,405 4,647
Levels 1, 2 and 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 112 159
Marketable securities 4,278 3,981
Long-term investments 831 709
Equity and Other Investments 530 543
Fair Value 5,762 5,403
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 112 159
Marketable securities 2,397 2,166
Long-term investments 558 537
Equity and Other Investments 0 0
Fair Value 3,078 2,872
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 500 470
Long-term investments 0 0
Equity and Other Investments 0 0
Fair Value 511 481
Level 1 | U.S. federal bonds and agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 0 20
Marketable securities 1,897 1,696
Long-term investments 558 537
Equity and Other Investments 0 0
Fair Value 2,455 2,252
Level 1 | Corporate bonds and commercial paper    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 112 139
Marketable securities 0 0
Long-term investments 0 0
Equity and Other Investments 0 0
Fair Value 112 139
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 1,881 1,815
Long-term investments 273 172
Equity and Other Investments 0 0
Fair Value 2,154 1,988
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 530 543
Fair Value $ 530 $ 543