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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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