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Acquisitions (Details)
In Millions, unless otherwise specified
 9 Months Ended 9 Months Ended
Sep. 30, 2012
USD ($)
Sep. 30, 2011
USD ($)
Sep. 30, 2012
Damilo Group [Member]
EUR (€)
Apr. 16, 2012
Damilo Group [Member]
USD ($)
Apr. 16, 2012
Damilo Group [Member]
EUR (€)
Sep. 30, 2012
Acquisitions Excluding Damilo Group [Member]
USD ($)
Sep. 30, 2011
Acquisitions Excluding Damilo Group [Member]
USD ($)
Business Acquisition [Line Items]              
Acquisition date     Apr. 16, 2012        
Total purchase price       $ 28.0 € 21.2    
Goodwill acquired         22.1    
Intangible Assets acquired     6.0   6.3    
Assumed liabilities         28.7    
Assets acquired, net of goodwill, related intangible assets and cash         21.5    
Amount of cash consideration paid for acquisitions, net of cash acquired 46.0 32.1       18.0 32.1
Estimated amortization expense, remainder of the current fiscal year 9.5            
Estimated amortization expense, 2013 32.5            
Estimated amortization expense, 2014 27.5            
Estimated amortization expense, 2015 23.9            
Estimated amortization expense, 2016 20.7            
Estimated amortization expense, 2017 $ 18.8