v3.26.3
Financial Instruments - Debt Securities (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents $ 1,868 $ 1,545
Marketable securities 2,859 4,233
Long-term investments 524 975
Equity and Other Investments 4,911 4,582
Levels 1, 2 and 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 318 1
Marketable securities 2,859 4,233
Long-term investments 524 975
Equity and Other Investments 599 558
Fair Value 4,297 5,782
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 318 1
Marketable securities 1,457 2,443
Long-term investments 417 527
Equity and Other Investments 0 0
Fair Value 2,191 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 250 520
Long-term investments 0 0
Equity and Other Investments 0 0
Fair Value 257 531
Level 1 | U.S. federal bonds and agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 267 1
Marketable securities 1,207 1,923
Long-term investments 417 527
Equity and Other Investments 0 0
Fair Value 1,883 2,453
Level 1 | Corporate bonds and commercial paper    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash Equivalents 51  
Marketable securities 0  
Long-term investments 0  
Equity and Other Investments 0  
Fair Value 51  
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 1,402 1,790
Long-term investments 107 448
Equity and Other Investments 0 0
Fair Value 1,507 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 599 558
Fair Value $ 599 $ 558