Lines of Credit and Financing Arrangements (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Discount fees in Selling, General and Administrative Expenses
Interest Expense (including fees)	$ 4.7	$ 4.1
Asset Securitization [Member]
Discount fees in Selling, General and Administrative Expenses
Interest Expense (including fees)	$ 0.3	$ 0.1