Fair Value Measurements and Risk (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Derivatives in ASC 815 cash flow hedging relationships
Gains and losses on derivative instruments
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ (0.7)	$ (5.9)	$ (5.5)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(4.4)	(2.7)	(4.1)
Derivatives in ASC 815 cash flow hedging relationships | Currency contracts | Cost of goods sold
Gains and losses on derivative instruments
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	0.2	(0.2)	0
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(0.1)	0.1	0.1
Derivatives in ASC 815 cash flow hedging relationships | Currency contracts | Other income (expense)
Gains and losses on derivative instruments
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	1.4
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	1.6
Derivatives in ASC 815 cash flow hedging relationships | Commodity contracts | Cost of goods sold
Gains and losses on derivative instruments
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	(2.3)	(5.7)	(5.5)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(5.9)	(2.8)	(4.2)
Derivatives not designated as hedging instruments under ASC 815 | Currency contracts | Other income (expense)
Gains and losses on derivative instruments
Amount of Gain or (Loss) Recognized in Income on Derivatives	$ (4.4)	$ 9.0	$ 25.3