Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment at Cost and Accumulated Depreciation (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 468.6	$ 612.9
Less: Accumulated depreciation	(307.0)	(423.9)
Property, plant and equipment, net	161.6	189.0
Land and buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2.6	2.6
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	269.1	435.6
Furniture, leaseholds and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 196.9	$ 174.6