Venezuela Currency Remeasurement - Narrative (Detail) $ in Millions	12 Months Ended		36 Months Ended
	Dec. 31, 2016	Dec. 31, 2015 USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Apr. 29, 2015	Mar. 31, 2015 VEF / $
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Gain (loss) on foreign currency transaction and translation, pre-tax		$ (30.3)
Devaluation of Venezuelan Bolivar
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Maximum three year cumulative inflation using the blended Consumer Price Index and National Consumer Price Index			100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%
Gain (loss) on foreign currency transaction and translation, pre-tax		(30.3)
Devaluation of Venezuelan Bolivar | SIMADI
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Foreign currency exchange rate | VEF / $												193
Gain (loss) on foreign currency transaction and translation, pre-tax		30.3
Gain (loss) on foreign currency transaction and translation, after tax		27.5
Devaluation of Venezuelan Bolivar | SIMADI | Noncontrolling Interests
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Gain (loss) on foreign currency transaction and translation, pre-tax		$ 10.5
International | Disposition
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Sale of equity interest date	Apr. 29, 2015
International | Disposition | Venezuelan Operating Entity
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Joint venture, ownership percentage											50.10%