Venezuela Currency Remeasurement - Narrative (Detail) $ in Millions	9 Months Ended		36 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($) VEF / $	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Apr. 29, 2015	Mar. 31, 2015 VEF / $	Mar. 31, 2014 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)	$ (18.0)
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%
Foreign currency exchange rate | VEF / $										6.3
Devaluation of Venezuelan Bolivar | SICAD 1
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Foreign currency exchange rate | VEF / $		11.7
Devaluation of Venezuelan Bolivar | SICAD 2
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Foreign currency exchange rate | VEF / $		50.0
Devaluation of Venezuelan Bolivar | SICAD 1 and 2
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		$ 18.0
Gain (loss) on foreign currency transaction and translation, after tax		14.0
Devaluation of Venezuelan Bolivar | SICAD 1 and 2 | 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		$ 6.0
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 | 2015 Dispositions
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 | 2015 Dispositions | 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%							50.10%