Restructuring and Other Items (Activity Related to Restructuring Obligations) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]
Balance	$ 6.8	$ 10.2
Charges	2.1	5.3
Cash payments	(4.0)	(8.9)
Non-cash adjustments	(2.1)	0.2
Balance	2.8	6.8
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Balance	6.2	10.2
Charges	(1.2)	2.3
Cash payments	(2.6)	(6.3)
Non-cash adjustments	0.4	0
Balance	2.8	6.2
Other Restructuring Costs [Member]
Restructuring Reserve [Roll Forward]
Balance	0.6	0
Charges	3.3	3.0
Cash payments	(1.4)	(2.6)
Non-cash adjustments	(2.5)	0.2
Balance	$ 0	$ 0.6