Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Customer deposits	$ 88.6	$ 81.3
Deferred revenue	10.6	$ 9.5
Revenue recognized that was previously included in deferred revenue	$ 9.5
Minimum
Disaggregation of Revenue [Line Items]
Extended product warranty period	12 months
Maximum
Disaggregation of Revenue [Line Items]
Extended product warranty period	27 months