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Acquisitions - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Nov. 28, 2012
Bornemann [Member]
Employees
Dec. 31, 2012
Bornemann [Member]
Dec. 31, 2011
Blakers [Member]
Dec. 31, 2010
Canberra Pumps do Brasil [Member]
Business Acquisition [Line Items]              
Purchase price of issued and outstanding stock, net of cash acquired       $ 193.2   $ 15.6 $ 9.5
Acquisition date       Nov. 28, 2012      
Number of employees       550      
Revenue 2,227.8 2,085.6 1,890.7   10.5    
Operating loss 151.5 (244.9) (180.6)   4.6    
Costs related to acquisition         $ 4.6