Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Total at cost	$ 2,924.7	$ 2,882.8
Less: accumulated depreciation and amortization	1,573.6	1,516.6
Total property, plant, and equipment	1,351.1	1,366.2
Land
Property, Plant and Equipment [Line Items]
Total at cost	35.1	35.6
Buildings and building equipment
Property, Plant and Equipment [Line Items]
Total at cost	538.5	512.9
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total at cost	2,226.4	2,183.6
Construction in progress
Property, Plant and Equipment [Line Items]
Total at cost	$ 124.7	$ 150.7