Geographical Information - Summary of Revenue by Geographic Area (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Entity Wide Revenue Major Customer [Line Items]
Revenue	$ 134	$ 656	$ 323	$ 1,428
Core Marketplace Revenue
Entity Wide Revenue Major Customer [Line Items]
Revenue	54	378	144	855
Core Marketplace Revenue | United States
Entity Wide Revenue Major Customer [Line Items]
Revenue	$ 22	$ 124	$ 57	$ 280