Assets Held for Sale and Discontinued Operations - Schedule of Assets Held for Sale (Detail) (USD $) In Millions, unless otherwise specified		12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014 Scenario, Forecast
Long Lived Assets Held-for-sale [Line Items]
Gain on disposition of assets		$ 2.6
Inventory, net of reserve	1.8
Property, net of depreciation	0.2
Total assets	$ 2.0