Derivative Financial Instruments (Details) € in Millions, ¥ in Millions, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 EUR (€) MBbls	Sep. 30, 2015 JPY (¥)	Sep. 30, 2015 USD ($)	Sep. 30, 2015 JPY (¥) MBbls	Sep. 30, 2015 USD ($) MBbls
Forward-Start Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount						$ 37.7
Maximum term (in years)		5 years	5 years	5 years
Derivative, underlying basis		one-month London Interbank Offered Rate (“LIBOR”)	one-month London Interbank Offered Rate (“LIBOR”)	one-month London Interbank Offered Rate (“LIBOR”)
Fixed interest rate		5.41%			5.41%	5.41%
Foreign Currency Hedge - USD Inventory Purchases, Euro Sub [Member]
Derivative [Line Items]
Notional amount		€ 5.3				$ 6.4
Foreign Currency Hedge - Euro Sales, U.S. Sub [Member]
Derivative [Line Items]
Notional amount		4.7				5.6
Foreign Currency Hedge - Yen Inventory Purchases, U.S. [Member]
Derivative [Line Items]
Derivative asset, notional amount					¥ 396.4	3.3
Derivative liability, notional amount					396.4	3.3
Foreign Currency Hedge - Yen Inventory Purchases, Euro Sub [Member]
Derivative [Line Items]
Derivative asset, notional amount					214.1	1.8
Derivative liability, notional amount					¥ 214.1	1.8
Euro-Denominated Revolver [Member]
Derivative [Line Items]
Notional amount, nonderivative instruments		21.0		$ 23.6
Yen-Denominated Revolver [Member]
Derivative [Line Items]
Notional amount, nonderivative instruments			¥ 500.0	4.2
Cumulative foreign currency translation gain						(1.2)
Cumulative foreign currency translation gain, net of tax						(0.8)
Euro Note B [Member]
Derivative [Line Items]
Notional amount, nonderivative instruments		€ 61.1		68.7
Euro-Denominated Debt [Member]
Derivative [Line Items]
Cumulative foreign currency translation gain						(15.0)
Cumulative foreign currency translation gain, net of tax						$ (9.5)
Options Held [Member]
Derivative [Line Items]
Derivative, nonmonetary notional amount | MBbls		134,700			134,700	134,700
Premium paid				0.1
Loss related to call options, less than	$ 0.1			$ 0.1