Venezuela Currency Remeasurement - Narrative (Detail) $ in Millions	3 Months Ended	6 Months Ended		36 Months Ended
	Jun. 30, 2014 USD ($) VEF / $	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($) 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)	$ (18.6)
Venezuela | International
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Joint venture, ownership percentage									50.10%
Sale of equity interest date		Apr. 29, 2015
Devaluation Of Venezuelan Bolivar
Financial Statement Line Items With Differences In Reported Amount And Reporting Currency Denominated Amounts [Line Items]
Joint venture, ownership percentage		50.10%
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 / $	10.6		10.6
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		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	$ 3.2		$ 18.6
Gain (loss) on foreign currency transaction and translation, after tax	0.9		14.0
Devaluation Of Venezuelan Bolivar | SICAD 1 and 2 | Noncontrolling Interest
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	$ 0.7		$ 6.4
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 Interest
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