Collaboration and License Agreements - Richter Development and Commercialization Agreement (Details) - Richter - USD ($) $ in Millions			1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 30, 2020	Apr. 30, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront payment received	$ 40.0
Maximum payment from regulatory milestones achieved		$ 40.0
Maximum payment from sales-related milestones achieved		107.5
Remaining transaction price		50.0
Additions			$ 10.0
Regulatory milestone payments received		$ 25.3			$ 15.0		$ 15.0
Revenue Recognized Upon Completion of Delivery
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenues				$ 0.3	$ 16.7	$ 0.3	$ 16.7