Debt - Additional Information (Details) - Convertible Senior Notes Due 2027 - USD ($) $ / shares in Units, $ in Millions	2 Months Ended	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Debt
Face amount	$ 420.0
Interest rate (as percent)	1.125%
Net proceeds	$ 408.6
Interest expense		$ 1.2	$ 1.2	$ 2.4	$ 1.6
Carrying amount of the liability component	$ 294.6
Discount rate (as percent)	6.50%
Fair value of the liability component	$ 125.4		125.4		125.4
Debt issuance costs	$ 11.4
Amortization of debt issuance costs		$ 0.4	$ 0.2	$ 0.8	$ 0.2
Period prior to maturity date where noteholders may convert their notes at their election prior to the maturity date	2 days
Conversion rate	18.9109
Conversion price (in dollars per share)	$ 52.88
Upper strike price (in dollars per share)	$ 86.174
Capped call transaction	$ 60.4