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Quarterly Results of Operations - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended							6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Quarterly Financial Information [Line Items]
Workforce reduction, recognized aggregate charge						$ 0.2	$ 0.4	$ 21.1			$ 21.7
Pre-tax impairment charge to write down							12.0
Valuation allowance										$ (2.2)	159.0
Income tax expense related to increase in reserve for uncertain tax positions		$ 2.4								2.4	$ 0.7	$ (5.1)
US-Canada APA
Schedule Of Quarterly Financial Information [Line Items]
U.S.-Canada APA		2.2	$ (5.6)							$ (3.4)
Other Operating Income (Expense), Net
Schedule Of Quarterly Financial Information [Line Items]
Income received from settlement of business interruption insurance claim		0.9		$ 1.4	$ 2.0				$ 3.4
Germany and Belgian
Schedule Of Quarterly Financial Information [Line Items]
Valuation allowance	$ 150.3	$ (4.3)	$ (0.8)	$ 2.9		$ 6.4	$ 2.3	$ 150.3

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