Financial Instruments (Fair Value of Derivative Instruments) (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Other Current Assets [Member]
Forward exchange contracts and options designated as hedging instruments, assets	$ 13.0	$ 19.5
Other Non-Current Assets [Member]
Forward exchange contracts and options designated as hedging instruments, assets	4.8	19.2
Other Current Liabilities [Member]
Forward exchange contracts and options designated as hedging instruments, liabilities	6.8	7.2
Other Long-Term Liabilities [Member]
Forward exchange contracts and options designated as hedging instruments, liabilities	$ 5.3	$ 0.8