Exit and Disposal Activities (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Exit and disposal activities
Total exit and disposal costs	$ 1.3	$ 6.2	$ 1.5
Exit and disposal costs accrued
Balance at the beginning of period	2.0	0.9
Charges	1.3	6.2
Usage	(2.8)	(5.1)
Balance at the end of period	0.5	2.0	0.9
Termination benefits
Exit and disposal activities
Total exit and disposal costs	0.5	1.7	0.5
Exit and disposal costs accrued
Balance at the beginning of period	1.4	0.5
Charges	0.5	1.7
Usage	(1.5)	(0.8)
Balance at the end of period	0.4	1.4	0.5
Impairments
Exit and disposal activities
Total exit and disposal costs	0.3	4.0
Exit and disposal costs accrued
Charges	0.2	4.0
Usage	(0.2)	(4.0)
Other associated costs
Exit and disposal activities
Total exit and disposal costs	0.5	0.5	1.0
Exit and disposal costs accrued
Balance at the beginning of period	0.6	0.4
Charges	0.6	0.5
Usage	(1.1)	(0.3)
Balance at the end of period	$ 0.1	$ 0.6	$ 0.4