Leases - Supplemental Cash Flow relating to Leases (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease payments impacting lease liability	$ 4.2	$ 3.6
Non-cash impact of obtaining new right-of-use assets	$ 5.1	$ 2.1
Weighted-average remaining term (in years)	4 years 4 months 24 days	6 years 1 month 6 days
Weighted-average discount rate	4.50%	4.70%