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	$ 965.2	$ 882.0
Accumulated depreciation	(468.0)	(416.8)
Property, plant and equipment, net	497.2	465.2
Capitalized interest	1.7	1.8	1.3
Land
Property, Plant, and Equipment
Property, plant and equipment, gross	38.9	35.7
Buildings and leasehold improvements
Property, Plant, and Equipment
Property, plant and equipment, gross	259.1	224.0
Machinery and equipment
Property, Plant, and Equipment
Property, plant and equipment, gross	606.9	558.9
Projects in progress
Property, Plant, and Equipment
Property, plant and equipment, gross	$ 60.3	$ 63.4