Segment Information, Geographic and Product Data - Schedule of Net Sales by Geographic Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Geographic Data
Net sales	$ 1,475.6	$ 2,181.1	$ 2,380.2
United States
Geographic Data
Net sales	926.6	1,393.4	1,606.7
Europe
Geographic Data
Net sales	242.7	387.4	387.2
Asia Pacific
Geographic Data
Net sales	194.4	237.5	196.3
Mexico
Geographic Data
Net sales	48.8	67.0	81.6
Canada
Geographic Data
Net sales	32.9	54.2	67.8
Other
Geographic Data
Net sales	$ 30.2	$ 41.6	$ 40.6