Financial Instruments (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Derivative contracts designated as hedging instruments | Accrued expenses
Fair value of derivative financial instruments
Fair value of derivative liability	$ (1.2)	$ (2.9)
Derivative contracts designated as hedging instruments | FX forward contracts | Accrued expenses
Fair value of derivative financial instruments
Fair value of derivative liability	(0.4)	(2.9)
Derivative contracts designated as hedging instruments | Commodity contracts | Accrued expenses
Fair value of derivative financial instruments
Fair value of derivative liability	(0.8)
Derivative contracts not designated as hedging instruments
Fair value of derivative financial instruments
Fair value of derivative liability	(15.5)	(36.4)
Derivative contracts not designated as hedging instruments | Other current assets
Fair value of derivative financial instruments
Fair value of derivative assets	1.2	3.1
Derivative contracts not designated as hedging instruments | FX forward contracts | Other current assets
Fair value of derivative financial instruments
Fair value of derivative assets		0.5
Derivative contracts not designated as hedging instruments | FX forward contracts | Accrued expenses
Fair value of derivative financial instruments
Fair value of derivative liability	(0.4)	(1.4)
Derivative contracts not designated as hedging instruments | FX embedded derivatives | Other current assets
Fair value of derivative financial instruments
Fair value of derivative assets	1.2	2.6
Derivative contracts not designated as hedging instruments | FX embedded derivatives | Accrued expenses
Fair value of derivative financial instruments
Fair value of derivative liability	(0.3)	(1.8)
Derivative contracts not designated as hedging instruments | FX embedded derivatives | Other long-term liabilities
Fair value of derivative financial instruments
Fair value of derivative liability	$ (14.8)	$ (33.2)