Balance Sheet Components - Schedule of Accrued Liabilities (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Accrued Liabilities Current [Abstract]
Decrease in vendor services	$ 78
Percentage of decrease in vendor services due to significantly reduce digital advertising expenditures and lower logistics costs	64.00%
Decrease in deferred revenue	$ 28
Percentage of decrease in deferred revenue due to to lower logistics volumes	76.00%
Unredeemable wish cash balances in core marketplace revenue		$ 29	$ 5