Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2019	Jul. 01, 2018
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Recognition of deferred revenue	$ 14.7	$ 57.8
Remaining performance obligations amount	830.1	830.1
Capitalized costs to obtain a contract	7.3	7.3	$ 5.9
Capitalized contract cost, amortization	0.5	1.8
Long-term warranty and service
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	72.0	72.0
Performance Obligations Other Than Warrant
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations amount	$ 758.1	$ 758.1
Minimum
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Percentage of changes in operating results on entity's revenue		15.00%
Maximum
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Percentage of changes in operating results on entity's revenue		25.00%