Quarterly report pursuant to Section 13 or 15(d)

Contingencies - Additional Information (Detail)

v2.4.0.6
Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
LegalMatter
Dec. 31, 2010
Loss Contingencies [Line Items]    
Number of Lawsuits 15  
Amount accrued $ 0  
Percent of costs to study and remediate site   20.00%
Customs Agent and Foreign Corrupt Practices Act (FCPA) Investigation
   
Loss Contingencies [Line Items]    
Amount accrued 0  
Gulfco Site
   
Loss Contingencies [Line Items]    
Amount accrued $ 0.6