Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment at Cost and Accumulated Depreciation (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 520.6	$ 493.2
Less: Accumulated depreciation	(408.4)	(395.9)
Property, plant and equipment, net	112.2	97.3
Land and buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2.5	4.9
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	341.2	317.4
Furniture, leaseholds and other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 177.0	$ 170.9