Impairments, Restructuring Charges, and Other Items (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Summary of impairment, restructuring, and other charges
Severance, restructuring costs, and special termination benefits	$ 0.6	$ 0.5	$ 1.8	$ 2.8
Business process re-engineering	0.2	1.5	0.4	2.1
Moving costs	0	0	0	0.5
Contingent legal liability and settlements	0	0	1.5	0
Environmental reserve for sold building	0	0	1.2	0
Total impairments, restructuring charges, and other items	$ 0.8	$ 2.0	$ 4.9	$ 5.4