Financial Instruments (Foreign Exchange Risk and Its Classification on Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified		6 Months Ended
	Jun. 30, 2013 contract	Jun. 30, 2013 Foreign Exchange Contract	Jun. 30, 2013 Foreign Exchange Contract Prepaid expenses and other current assets	Dec. 31, 2012 Foreign Exchange Contract Prepaid expenses and other current assets	Jun. 30, 2013 Foreign Exchange Contract Other current liabilities	Dec. 31, 2012 Foreign Exchange Contract Other current liabilities
Derivatives, Fair Value
Assets			$ 3.0	$ 1.3
Liabilities					2.7	3.0
Net derivative fair value Assets	2.3
Net derivative fair value liabilities	2.0
Potential effect of rights of set off associated with the foreign exchange contracts	$ 0.7
Number of swap and forward foreign exchange contracts outstanding	25
Swaps and forward contracts maturity		90 days