Lines of Credit and Financing Arrangements (Details 1) (Eligible amounts available and beneficial interest sold [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Eligible amounts available and beneficial interest sold [Member]
Eligible amounts available and beneficial interests sold
Eligible amount available under the RPA on qualified accounts receivable	$ 150.0	$ 150.0
Beneficial interest sold
Remaining amount available	$ 150.0	$ 150.0