v3.26.3
Financial Instruments - Assets Measured on a Recurring Basis (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt $ 118,380  
Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 56,334 $ 30,708
Marketable equity securities 90,384  
Total marketable securities 208,764 96,135
Total 265,098 126,843
Fair Value, Recurring | Marketable equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable equity securities   6,313
Fair Value, Recurring | Marketable equity securities | SpaceX    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable equity securities 75,200  
Fair Value, Recurring | Government bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 68,629 50,549
Fair Value, Recurring | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 27,054 21,565
Fair Value, Recurring | Mortgage-backed and asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 22,697 17,708
Fair Value, Recurring | Cash    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 15,695 15,305
Fair Value, Recurring | Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 13,810 11,349
Fair Value, Recurring | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 5,080 3,353
Fair Value, Recurring | Government bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 21,718 602
Fair Value, Recurring | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 31 99
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 13,810 11,349
Marketable equity securities 89,919  
Total marketable securities 89,919 4,402
Total 103,729 15,751
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Marketable equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable equity securities   4,402
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 0 0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 0 0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed and asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 0 0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 13,810 11,349
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 0 0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 0 0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 0 0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 26,829 4,054
Marketable equity securities 465  
Total marketable securities 118,845 91,733
Total 145,674 95,787
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Marketable equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable equity securities   1,911
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Government bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 68,629 50,549
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 27,054 21,565
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-backed and asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable securities, debt 22,697 17,708
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 0 0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 5,080 3,353
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Government bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents 21,718 602
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash and cash equivalents $ 31 $ 99