Derivative Financial Instruments (Details) In Millions, unless otherwise specified	3 Months Ended									3 Months Ended							3 Months Ended
	Mar. 31, 2015 Forward-Start Interest Rate Swap [Member] USD ($)	Mar. 31, 2015 Interest Rate Swap, Series B Note [Member] USD ($)	Mar. 31, 2015 Foreign Currency Hedge - USD Inventory Purchases, Euro Sub [Member] USD ($)	Mar. 31, 2015 Foreign Currency Hedge - USD Inventory Purchases, Euro Sub [Member] EUR (€)	Mar. 31, 2015 Foreign Currency Hedge - Euro Sales, U.S. Sub [Member] USD ($)	Mar. 31, 2015 Foreign Currency Hedge - Yen Inventory Purchases, U.S. [Member] USD ($)	Mar. 31, 2015 Foreign Currency Hedge - Yen Inventory Purchases, U.S. [Member] JPY (¥)	Mar. 31, 2015 Foreign Currency Hedge - Yen Inventory Purchases, Euro Sub [Member] USD ($)	Mar. 31, 2015 Foreign Currency Hedge - Yen Inventory Purchases, Euro Sub [Member] JPY (¥)	Mar. 31, 2015 Euro-Denominated Revolver [Member] USD ($)	Mar. 31, 2015 Euro-Denominated Revolver [Member] EUR (€)	Mar. 31, 2015 Yen-Denominated Revolver [Member] USD ($)	Mar. 31, 2015 Yen-Denominated Revolver [Member] JPY (¥)	Mar. 31, 2015 Euro Note B [Member] USD ($)	Mar. 31, 2015 Euro Note B [Member] EUR (€)	Mar. 31, 2015 Euro-Denominated Debt [Member] USD ($)	Dec. 31, 2014 Options Held [Member] USD ($) MBbls
Derivative [Line Items]
Notional amount	$ 38.7	$ 25.0	$ 17.5	€ 14.5	$ 16.8
Derivative asset, notional amount						9.9	1,200.0	6.1	800.0
Maximum term (in years)	5 years
Derivative, underlying basis	one-month London Interbank Offering Rates (“LIBOR”)	three-month LIBOR
Fixed interest rate	5.41%	5.51%
Maturity date of debt		Jul. 28, 2015
Derivative liability, notional amount						9.9	1,200.0	6.1	800.0
Notional amount, nonderivative instruments										22.8	21.0	4.2	500.0	66.3	61.1
Cumulative foreign currency translation loss (gain)												(1.2)				(18.2)
Cumulative foreign currency translation loss (gain), net of tax												(0.8)				(11.5)
Derivative, nonmonetary notional amount																	134,700
Premium paid																	$ 0.1