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Business Combinations - Additional Information (Detail) (Robuschi S.P.A., USD $)
In Millions, unless otherwise specified
Dec. 15, 2011
Robuschi S.P.A.
 
Business Acquisition [Line Items]  
Total consideration $ 200.8
Payments to shareholders 151.5
Retirement of external debt at closing 49.3
Long-term debt assumed, approximately $ 5.2