Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2020
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Recognition of deferred revenue	$ 6.5	$ 11.3	$ 23.7	$ 38.2
Remaining performance obligations amount	$ 1,041.8		$ 1,041.8
Percentage of changes in operating results on entity's revenue			23.00%
Capitalized contract cost, amortization period	5 years		5 years
Capitalized costs to obtain a contract	$ 7.8		$ 7.8		$ 7.9
Impairment loss	0.2	0.5	0.5	0.7
Capitalized contract cost, amortization	0.8	$ 0.7	2.0	$ 1.7
Long-term Warranty and Service
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	75.4		75.4
Performance Obligations Other Than Warrant
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	$ 966.4		$ 966.4