Lines of Credit and Financing Arrangements (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Discount fees in Selling, General and Administrative Expenses
Interest Expense	$ 17.1	$ 16.8	$ 12.8
Asset Securitization [Member]
Discount fees in Selling, General and Administrative Expenses
Interest Expense	$ 1.2	$ 0.7	$ 0.5