Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, plant and equipment
Property, plant and equipment, gross	$ 699.2	$ 643.0
Less accumulated depreciation and amortization	(399.7)	(359.4)
Property, plant and equipment, net	299.5	283.6
Depreciation and amortization	40.5	37.1	34.8
Impairment charge related to property, plant and equipment		6.0
Land
Property, plant and equipment
Property, plant and equipment, gross	34.9	33.8
Building and leasehold improvements
Property, plant and equipment
Property, plant and equipment, gross	301.7	271.9
Machinery, equipment, software and furniture and fixtures
Property, plant and equipment
Property, plant and equipment, gross	$ 362.6	$ 337.3