Revenue - Summary of revenue by geography (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Consolidated net sales	$ 396.0	$ 348.8	$ 783.6	$ 702.1
United States
Disaggregation of Revenue [Line Items]
Consolidated net sales	254.2	208.2	501.1	432.9
Asia Pacific
Disaggregation of Revenue [Line Items]
Consolidated net sales	53.2	48.9	114.8	86.8
Europe
Disaggregation of Revenue [Line Items]
Consolidated net sales	52.3	68.1	100.8	129.3
Mexico
Disaggregation of Revenue [Line Items]
Consolidated net sales	21.6	10.7	37.5	23.9
Canada
Disaggregation of Revenue [Line Items]
Consolidated net sales	8.1	7.1	15.9	14.9
Other
Disaggregation of Revenue [Line Items]
Consolidated net sales	$ 6.6	$ 5.8	$ 13.5	$ 14.3