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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Unrecognized tax benefits would impact effective tax rate if recognized	$ 13.4		$ 13.4
Unrecognized tax benefit	14.0	$ 2.5	14.0	$ 2.5	$ 2.3	$ 3.9
Uncertain tax positions			$ 12.1	0.7	0.0
Income tax examination, description			The Company and its U.S. subsidiaries remain open to examination by the IRS for years 2016 onwards. The Company's subsidiaries in foreign tax jurisdictions are open to examination including Spain (2014 onwards), France (2015 onwards), Germany (2015 onwards), Switzerland (2016 onwards) and the United Kingdom (2017 onwards).
Cash payments for income taxes			$ 35.4	24.2	23.1
Increase to income tax expense				47.7
Transition tax adjusted estimate				61.1
Income tax expense		12.3	$ 46.6	$ 66.3	$ 21.8
Statutory income tax rate			21.00%	35.00%	35.00%
Gross net operating loss carry forwards deferred tax asset	8.8	15.9	$ 8.8	$ 15.9
Operating loss carry forwards	36.8		36.8
Italian Tax Authorities [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit	0.9	0.5	0.9	$ 0.5
Income tax interest expense		0.2	0.3
Italian Tax Authorities [Member] | Purchase And Sale Agreement [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit	1.9		$ 1.9
Tax Cuts and Jobs Act [Member]
Income Tax Contingency [Line Items]
Uncertain tax positions	10.8
Statutory income tax rate			21.00%	35.00%
Adjustment to deferred tax expense			$ 1.1	$ (7.1)
Deferred tax liability decrease	1.1	$ (7.1)	1.1	$ (7.1)
Federal [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	1.0		1.0
State [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	1.3		1.3
Foreign [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	34.4		$ 34.4
Italy [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2011
Italy [Member] | Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2013
SPAIN | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2014
France [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2015
Germany [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2015
Switzerland [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2016
United Kingdom [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2017
United States [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	$ 2.3		$ 2.3
United States [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year			2016

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