Fair Value Measurement of Assets and Liabilities - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Nov. 14, 2021
GMarket
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity investment under fair value option	$ 728
Equity investments, right held, term (in years)		2 years
Discontinued Operations | eBay Korea
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Percentage of outstanding equity interests sold	80.01%