Equity Award Activity and Stock Based Compensation - Summary of Stock-Based Compensation Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	$ 29	$ 37	$ 27	$ 74
Cost of Revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	3	5	2	10
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	2	3	3	6
Product Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	14	14	28	29
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	$ 10	$ 15	$ (6)	$ 29