Other Consolidated Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Other Consolidated Balance Sheet Components [Abstract]
Prepaid insurance	$ 1.6	$ 3.3
Prepaid merchant signing bonuses	0.3	0.7
Other prepaid expenses	8.4	6.1
Taxes receivable	1.7	1.8
Agent and employee loan receivables	0.5	0.2
Other current assets	0.4	0.3
Total prepaid expenses and other current assets	$ 12.9	$ 12.4