Revenue (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Revenue	$ 512.4	$ 393.9
Service revenue
Revenue	343.6	244.9
Commissions
Revenue	130.6	116.4
Buyer fees
Revenue	140.7	75.6
Marketplace services revenue
Revenue	72.3	52.9
Inventory sales revenue
Revenue	$ 168.8	$ 149.0

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details