v3.25.2
Fair Value Measurement of Assets and Liabilities - Financial Assets and Liabilities Measured at Fair Value, Recurring (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Liabilities:    
Short-term investments $ 26  
Recurring    
Assets:    
Cash and cash equivalents 3,231 $ 3,286
Derivatives 69 97
Total financial assets 6,614 8,149
Liabilities:    
Derivatives 48 18
Recurring | Cash and cash equivalents    
Assets:    
Cash and cash equivalents 2,070 2,433
Recurring | Customer accounts    
Assets:    
Cash and cash equivalents 1,007 763
Recurring | Restricted cash included in other current assets    
Assets:    
Cash and cash equivalents 152 88
Recurring | Restricted cash included in other assets    
Assets:    
Cash and cash equivalents 2 2
Recurring | Short-term investments:    
Assets:    
Investments 1,706 3,457
Recurring | Long-term investments:    
Assets:    
Investments 1,608 1,309
Recurring | Corporate debt securities | Short-term investments:    
Assets:    
Investments 1,497 3,094
Recurring | Corporate debt securities | Long-term investments:    
Assets:    
Investments 1,456 1,119
Recurring | Government and agency securities | Short-term investments:    
Assets:    
Investments 209 363
Recurring | Government and agency securities | Long-term investments:    
Assets:    
Investments 152 190
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Cash and cash equivalents 3,231 3,286
Derivatives 0 0
Total financial assets 3,231 3,286
Liabilities:    
Derivatives 0 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents    
Assets:    
Cash and cash equivalents 2,070 2,433
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Customer accounts    
Assets:    
Cash and cash equivalents 1,007 763
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Restricted cash included in other current assets    
Assets:    
Cash and cash equivalents 152 88
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Restricted cash included in other assets    
Assets:    
Cash and cash equivalents 2 2
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Short-term investments:    
Assets:    
Investments 0 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term investments:    
Assets:    
Investments 0 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities | Short-term investments:    
Assets:    
Investments 0 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities | Long-term investments:    
Assets:    
Investments 0 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government and agency securities | Short-term investments:    
Assets:    
Investments 0 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government and agency securities | Long-term investments:    
Assets:    
Investments 0 0
Recurring | Significant Other Observable Inputs (Level 2)    
Assets:    
Cash and cash equivalents 0 0
Derivatives 54 82
Total financial assets 3,368 4,848
Liabilities:    
Derivatives 48 18
Recurring | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Other Observable Inputs (Level 2) | Customer accounts    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Other Observable Inputs (Level 2) | Restricted cash included in other current assets    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Other Observable Inputs (Level 2) | Restricted cash included in other assets    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Other Observable Inputs (Level 2) | Short-term investments:    
Assets:    
Investments 1,706 3,457
Recurring | Significant Other Observable Inputs (Level 2) | Long-term investments:    
Assets:    
Investments 1,608 1,309
Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Short-term investments:    
Assets:    
Investments 1,497 3,094
Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Long-term investments:    
Assets:    
Investments 1,456 1,119
Recurring | Significant Other Observable Inputs (Level 2) | Government and agency securities | Short-term investments:    
Assets:    
Investments 209 363
Recurring | Significant Other Observable Inputs (Level 2) | Government and agency securities | Long-term investments:    
Assets:    
Investments 152 190
Recurring | Significant Unobservable Inputs (Level 3)    
Assets:    
Cash and cash equivalents 0 0
Derivatives 15 15
Total financial assets 15 15
Liabilities:    
Derivatives 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Customer accounts    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Restricted cash included in other current assets    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Restricted cash included in other assets    
Assets:    
Cash and cash equivalents 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Short-term investments:    
Assets:    
Investments 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Long-term investments:    
Assets:    
Investments 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities | Short-term investments:    
Assets:    
Investments 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities | Long-term investments:    
Assets:    
Investments 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Government and agency securities | Short-term investments:    
Assets:    
Investments 0 0
Recurring | Significant Unobservable Inputs (Level 3) | Government and agency securities | Long-term investments:    
Assets:    
Investments $ 0 $ 0