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Investments - Equity Investment Under the Fair Value Option (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Nov. 14, 2021 | Jun. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
Schedule of Investments [Line Items] |  |  |  |
Unrealized loss on equity securities |  | $ 77 | $ 259 |
Equity investment in Adevinta |  | 2,919 | 2,919 | $ 5,391
Other equity investments |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Equity investment in Adevinta |  | 38 | 38 |
Long-term investments: |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Equity investment in Adevinta |  | 504 | 504 | 725
GMarket |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Ownership percentage after sale | 19.99% |  |  |
Investment balance | $ 728 |  |  | $ 725
Retained investment, rights, period (in years) | 2 years |  |  |
GMarket | Long-term investments: |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Equity investment in Adevinta |  | $ 466 | $ 466 |
Discontinued Operations, Disposed of by Sale | eBay Korea |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of outstanding equity interests sold | 80.01% |  |  |

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