Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Land	$ 2.4	$ 2.3
Buildings and improvements	19.3	17.1
Leasehold improvements	23.0	22.1
Equipment	112.4	106.9
Gross property, plant and equipment	157.1	148.4
Less accumulated depreciation	(113.9)	(97.3)
Property, plant and equipment, net	$ 43.2	$ 51.1

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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