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Other Charges (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Other Charges    
Professional fees incurred in connection with the internal investigation $ 2.5  
Factory relocation costs 0.5  
Acquisition-related charges 0.4 0.6
Transition-related charges incurred in connection with acquired businesses   1.5
Other charges $ 3.4 $ 2.1