Fair Value Measurement of Assets and Liabilities - Financial Assets and Liabilities Measured at Fair Value, Recurring (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023 |
Assets: | | |
Cash and cash equivalents | $ 2,130 | $ 1,985 |
Long-term investments: | | |
Assets: | | |
Equity investments | 376 | 382 |
Recurring | | |
Assets: | | |
Cash and cash equivalents | 2,661 | 2,493 |
Derivatives | 542 | 396 |
Total financial assets | 10,536 | 10,830 |
Liabilities: | | |
Other liabilities | | 10 |
Derivatives | 7 | 33 |
Recurring | Cash and cash equivalents | | |
Assets: | | |
Cash and cash equivalents | 2,130 | 1,985 |
Recurring | Customer accounts | | |
Assets: | | |
Cash and cash equivalents | 448 | 481 |
Recurring | Restricted cash included in other current assets | | |
Assets: | | |
Cash and cash equivalents | 79 | 23 |
Recurring | Restricted cash included in other assets | | |
Assets: | | |
Cash and cash equivalents | 4 | 4 |
Recurring | Adevinta | | |
Assets: | | |
Equity investments | 4,240 | 4,474 |
Recurring | Short-term investments: | | |
Assets: | | |
Investments | 1,743 | 2,533 |
Recurring | Long-term investments: | | |
Assets: | | |
Investments | 1,350 | 934 |
Recurring | Long-term investments: | Equity investment under the fair value option | | |
Assets: | | |
Investments | 329 | 335 |
Recurring | Corporate debt securities | Short-term investments: | | |
Assets: | | |
Investments | 1,270 | 2,162 |
Recurring | Corporate debt securities | Long-term investments: | | |
Assets: | | |
Investments | 575 | 328 |
Recurring | Government and agency securities | Short-term investments: | | |
Assets: | | |
Investments | 473 | 371 |
Recurring | Government and agency securities | Long-term investments: | | |
Assets: | | |
Investments | 446 | 271 |
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | | |
Assets: | | |
Cash and cash equivalents | 2,661 | 2,493 |
Derivatives | 0 | 0 |
Total financial assets | 6,901 | 6,967 |
Liabilities: | | |
Other liabilities | | 0 |
Derivatives | 0 | 0 |
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents | | |
Assets: | | |
Cash and cash equivalents | 2,130 | 1,985 |
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Customer accounts | | |
Assets: | | |
Cash and cash equivalents | 448 | 481 |
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Restricted cash included in other current assets | | |
Assets: | | |
Cash and cash equivalents | 79 | 23 |
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Restricted cash included in other assets | | |
Assets: | | |
Cash and cash equivalents | 4 | 4 |
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Adevinta | | |
Assets: | | |
Equity investments | 4,240 | 4,474 |
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) | Long-term investments: | Equity investment under the fair value option | | |
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 | 29 | 32 |
Total financial assets | 2,793 | 3,164 |
Liabilities: | | |
Other liabilities | | 0 |
Derivatives | 7 | 33 |
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) | Adevinta | | |
Assets: | | |
Equity investments | 0 | 0 |
Recurring | Significant Other Observable Inputs (Level 2) | Short-term investments: | | |
Assets: | | |
Investments | 1,743 | 2,533 |
Recurring | Significant Other Observable Inputs (Level 2) | Long-term investments: | | |
Assets: | | |
Investments | 1,021 | 599 |
Recurring | Significant Other Observable Inputs (Level 2) | Long-term investments: | Equity investment under the fair value option | | |
Assets: | | |
Investments | 0 | 0 |
Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Short-term investments: | | |
Assets: | | |
Investments | 1,270 | 2,162 |
Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Long-term investments: | | |
Assets: | | |
Investments | 575 | 328 |
Recurring | Significant Other Observable Inputs (Level 2) | Government and agency securities | Short-term investments: | | |
Assets: | | |
Investments | 473 | 371 |
Recurring | Significant Other Observable Inputs (Level 2) | Government and agency securities | Long-term investments: | | |
Assets: | | |
Investments | 446 | 271 |
Recurring | Significant Unobservable Inputs (Level 3) | | |
Assets: | | |
Cash and cash equivalents | 0 | 0 |
Derivatives | 513 | 364 |
Total financial assets | 842 | 699 |
Liabilities: | | |
Other liabilities | | 10 |
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) | Adevinta | | |
Assets: | | |
Equity investments | 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 | 329 | 335 |
Recurring | Significant Unobservable Inputs (Level 3) | Long-term investments: | Equity investment under the fair value option | | |
Assets: | | |
Investments | 329 | 335 |
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 |