Restructuring Facilities Restructuring (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Facility Charge [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning balance	$ 0.5	$ 4.9	$ 1.2
Other Restructuring Costs	0.2	0	9.3
Restructuring liability payment	(0.4)	(4.4)	(5.6)
Restructuring liability, ending balance	0.3	0.5	4.9
2012 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, ending balance	$ 5.2