Fair Value Measurement of Assets and Liabilities - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Nov. 14, 2021
GMarket
Schedule of Equity Method Investments [Line Items]
Investment balance	$ 725	$ 728
Equity investments, right held, term (in years)		2 years
Discontinued Operations, Disposed of by Sale | eBay Korea
Schedule of Equity Method Investments [Line Items]
Percentage of outstanding equity interests sold		80.01%