Restructuring and Other Items (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Restructuring and related charges:
Severance and post-employment benefits	$ 0	$ 1.5
Impairments and asset write-offs	0.2	0.2
Other restructuring charges	0.2	0.2
Total restructuring and related charges	0.4	1.9
Acquisition-related contingencies	0.2	0
Foreign exchange and other	(0.8)	(0.2)
Total restructuring and other items	(0.2)	1.7
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	6.8
Charges	0.4
Cash payments	(1.3)
Non-cash adjustment	(0.2)
Balance, end of period	5.7
Expected total restructuring and related charges	1.6
Expected cash expenditures	1.2
Expected non-cash charges	0.4
Increase in contingent consideration liability	0.2
Severance and benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	6.2
Charges	0
Cash payments	(0.9)
Non-cash adjustment	0
Balance, end of period	5.3
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance, beginning of period	0.6
Charges	0.4
Cash payments	(0.4)
Non-cash adjustment	(0.2)
Balance, end of period	$ 0.4