v3.26.1
Fair Value Measurement of Assets and Liabilities - Financial Assets and Liabilities Measured at Fair Value, Recurring (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Cash and cash equivalents $ 3,698 $ 3,055
Derivatives 67 39
Short-term investments 997 1,052
Long-term investments 1,544 1,838
Total financial assets 6,306 5,984
Liabilities:    
Derivatives 31 12
Corporate bonds    
Assets:    
Short-term investments 764 745
Long-term investments 1,520 1,813
Commercial paper    
Assets:    
Short-term investments 149 243
Government and agency securities    
Assets:    
Short-term investments 84 64
Long-term investments 24 25
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Cash and cash equivalents 3,698 3,055
Derivatives 0 0
Short-term investments 0 0
Long-term investments 0 0
Total financial assets 3,698 3,055
Liabilities:    
Derivatives 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds    
Assets:    
Short-term investments 0 0
Long-term investments 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial paper    
Assets:    
Short-term investments 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Government and agency securities    
Assets:    
Short-term investments 0 0
Long-term investments 0 0
Significant Other Observable Inputs (Level 2)    
Assets:    
Cash and cash equivalents 0 0
Derivatives 64 29
Short-term investments 997 1,052
Long-term investments 1,544 1,838
Total financial assets 2,605 2,919
Liabilities:    
Derivatives 31 12
Significant Other Observable Inputs (Level 2) | Corporate bonds    
Assets:    
Short-term investments 764 745
Long-term investments 1,520 1,813
Significant Other Observable Inputs (Level 2) | Commercial paper    
Assets:    
Short-term investments 149 243
Significant Other Observable Inputs (Level 2) | Government and agency securities    
Assets:    
Short-term investments 84 64
Long-term investments 24 25
Significant Unobservable Inputs (Level 3)    
Assets:    
Cash and cash equivalents 0 0
Derivatives 3 10
Short-term investments 0 0
Long-term investments 0 0
Total financial assets 3 10
Liabilities:    
Derivatives 0 0
Significant Unobservable Inputs (Level 3) | Corporate bonds    
Assets:    
Short-term investments 0 0
Long-term investments 0 0
Significant Unobservable Inputs (Level 3) | Commercial paper    
Assets:    
Short-term investments 0 0
Significant Unobservable Inputs (Level 3) | Government and agency securities    
Assets:    
Short-term investments 0 0
Long-term investments 0 0
Cash and cash equivalents    
Assets:    
Cash and cash equivalents 2,310 1,867
Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Cash and cash equivalents 2,310 1,867
Cash and cash equivalents | Significant Other Observable Inputs (Level 2)    
Assets:    
Cash and cash equivalents 0 0
Cash and cash equivalents | Significant Unobservable Inputs (Level 3)    
Assets:    
Cash and cash equivalents 0 0
Customer accounts    
Assets:    
Cash and cash equivalents 1,231 1,017
Customer accounts | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Cash and cash equivalents 1,231 1,017
Customer accounts | Significant Other Observable Inputs (Level 2)    
Assets:    
Cash and cash equivalents 0 0
Customer accounts | Significant Unobservable Inputs (Level 3)    
Assets:    
Cash and cash equivalents 0 0
Restricted cash included in other current assets    
Assets:    
Cash and cash equivalents 156 170
Restricted cash included in other current assets | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Cash and cash equivalents 156 170
Restricted cash included in other current assets | Significant Other Observable Inputs (Level 2)    
Assets:    
Cash and cash equivalents 0 0
Restricted cash included in other current assets | Significant Unobservable Inputs (Level 3)    
Assets:    
Cash and cash equivalents 0 0
Restricted cash included in other assets    
Assets:    
Cash and cash equivalents 1 1
Restricted cash included in other assets | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Cash and cash equivalents 1 1
Restricted cash included in other assets | Significant Other Observable Inputs (Level 2)    
Assets:    
Cash and cash equivalents 0 0
Restricted cash included in other assets | Significant Unobservable Inputs (Level 3)    
Assets:    
Cash and cash equivalents $ 0 $ 0