Other Short-Term and Long-Term Obligations (Details 3) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Mar. 31, 2013 A/R Securitization Program	Feb. 11, 2013 A/R Securitization Program	Mar. 31, 2013 Senior Secured Revolving Credit Facility
Other Short-Term and Long-Term Obligations
Maximum amount under senior secured revolving credit facility	$ 51.8	$ 75.0	$ 500.0
Additional borrowing capacity available on the credit facility			200
Long-term debt	$ 0		$ 0