Property, Plant and Equipment (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Abstract]
Depreciation	$ 17.9	$ 16.2	$ 14.1
Sale Leaseback Transaction, Deferred Gain, Net	1.1	1.6
Tangible Asset Impairment Charges		0.9	3.0
Property, Plant and Equipment, Other, Net		$ 0.9