Derivative Instruments and Hedging Activities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended						3 Months Ended		9 Months Ended						3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Not Designated as Hedging Instrument [Member]	Dec. 31, 2011 Not Designated as Hedging Instrument [Member]	Sep. 30, 2012 Designated as Hedging Instrument [Member]	Dec. 31, 2011 Designated as Hedging Instrument [Member]	Sep. 30, 2012 Commodity Contract [Member]	Sep. 30, 2011 Commodity Contract [Member]	Sep. 30, 2012 Commodity Contract [Member]	Sep. 30, 2011 Commodity Contract [Member]	Sep. 30, 2012 Commodity Contract [Member] Not Designated as Hedging Instrument [Member]	Dec. 31, 2011 Commodity Contract [Member] Not Designated as Hedging Instrument [Member]	Sep. 30, 2012 Commodity Contract [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2011 Commodity Contract [Member] Designated as Hedging Instrument [Member]	Sep. 30, 2012 Currency [Member]	Sep. 30, 2011 Currency [Member]	Sep. 30, 2012 Currency [Member]	Sep. 30, 2011 Currency [Member]	Sep. 30, 2012 Currency [Member] Not Designated as Hedging Instrument [Member]	Dec. 31, 2011 Currency [Member] Not Designated as Hedging Instrument [Member]	Sep. 30, 2012 Currency [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2011 Currency [Member] Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (3.7)	$ 4.3	$ (10.8)	$ 14.6					$ (0.2)	$ 1.6	$ (2.0)	$ 6.9					$ (3.5)	$ 2.7	$ (8.8)	$ 7.7
Derivatives designated as hedging instruments
Derivative Assets													0.4	0	0.5	0.2					0	0	0.2	0
Derivative Liabilities													0	0	(0.2)	(3.5)					(0.2)	0	(3.1)	(13.1)
Derivative assets and liabilities at Fair value net					$ 0.2	$ 0	$ (2.6)	$ (16.4)