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Supplemental Consolidated Financial Information - Equity Method Investments and Warrants (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Balance Sheet Components [Line Items] |  |  |  |
Unrealized change in fair value of equity investment | $ (4) | $ (23) | $ (8) | $ (263)
Change in fair value of warrant | 0 | (174) | 0 | (25)
Change in fair value of Aurelia option | 0 | (109) | 0 | (109)
Loss on equity investments and warrant, net | (4) | (222) | (6) | (319)
Adevinta |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |
Unrealized change in fair value of equity investment | 0 | 0 | 0 | (234)
Realized change in fair value of shares sold in Adevinta | 0 | 84 | 0 | 78
Gmarket |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |
Unrealized change in fair value of equity investment | 0 | (22) | 0 | (28)
Loss on other investments |  |  |  |
Balance Sheet Components [Line Items] |  |  |  |
Unrealized change in fair value of equity investment | $ (4) | $ (1) | $ (6) | $ (1)

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