Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	$ 935.4		$ 935.4
Percentage of changes in operating results on entity's revenue			14.00%
Capitalized contract cost, amortization period	5 years		5 years
Capitalized costs to obtain a contract	$ 9.1		$ 9.1		$ 8.4
Impairment loss	0.0		0.1
Capitalized contract cost, amortization	0.5	$ 0.4	1.0	$ 1.3
Long-term warranty and service
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	83.9		83.9
Performance Obligations Other Than Warrant
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	$ 851.5		$ 851.5