Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Foreign Currency
Foreign exchange gains (losses) realized	$ (0.9)	$ 1.2	$ (1.9)
Buildings
Property, plant and equipment
Useful life	40 years
Machinery and equipment | Minimum
Property, plant and equipment
Useful life	3 years
Machinery and equipment | Maximum
Property, plant and equipment
Useful life	10 years