Investments - Equity Investment Under the Fair Value Option, Narrative (Details) - USD ($) $ in Millions	Nov. 14, 2021	Dec. 31, 2021
GMarket
Schedule of Investments [Line Items]
Percentage of outstanding equity interests retained	19.99%
Equity investment under fair value option	$ 728
Retained investment, rights, period	2 years
Fair value of investment	$ 728	$ 725
Discontinued Operations | eBay Korea
Schedule of Investments [Line Items]
Percentage of outstanding equity interests sold	80.01%