Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Property, Plant and Equipment [Line Items]
Total at cost	$ 2,882.8	$ 2,747.4
Less: accumulated depreciation and amortization	1,516.6	1,434.0
Total property, plant, and equipment	1,366.2	1,313.4
Land
Property, Plant and Equipment [Line Items]
Total at cost	35.6	34.8
Buildings and building equipment
Property, Plant and Equipment [Line Items]
Total at cost	512.9	500.0
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total at cost	2,183.6	2,129.0
Construction in progress
Property, Plant and Equipment [Line Items]
Total at cost	$ 150.7	$ 83.6