Financial Instruments (Schedule of Location and Fair Value of Derivative Instruments Segregated between Designated and Not Designated Hedging Instruments) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Fair value of derivative assets - designated as hedging instruments	$ 11.4	$ 5.0
Fair value of derivative liability - designated as hedging instruments	1.3	1.1
Fair value of derivative assets - not designated as hedging instruments	6.4	1.8
Forward Currency Contracts [Member] | Other Current Assets [Member]
Fair value of derivative assets - designated as hedging instruments	3.5	2.8
Fair value of derivative assets - not designated as hedging instruments	6.4
Forward Currency Contracts [Member] | Other Assets [Member]
Fair value of derivative assets - designated as hedging instruments	1.6
Fair value of derivative assets - not designated as hedging instruments		1.8
Forward Currency Contracts [Member] | Accrued Expenses [Member]
Fair value of derivative liability - designated as hedging instruments	1.3	1.1
Option Currency Contracts [Member] | Other Current Assets [Member]
Fair value of derivative assets - designated as hedging instruments	1.6	1.5
Interest Rate Swap Contract [Member] | Other Assets [Member]
Fair value of derivative assets - designated as hedging instruments	$ 4.7	$ 0.7