Other Short-Term and Long-Term Obligations (Details 3) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Feb. 11, 2013
Amended Credit Agreement and the A/R Securitization Program
Other Short-Term and Long-Term Obligations
Borrowing capacity allowed	$ 487.0
A/R Securitization Program
Other Short-Term and Long-Term Obligations
Maximum amount under senior secured revolving credit facility		75
Borrowing capacity allowed	51.9
Long-term debt	0
Senior Secured Revolving Credit Facility
Other Short-Term and Long-Term Obligations
Maximum amount under senior secured revolving credit facility	500
Long-term debt	$ 0