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Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Income Taxes [Line Items]        
Effective income tax rate 34.10% 21.70% 27.50% 22.90%
Restructuring and other charges $ 94,703 [1]   $ 94,703 [1]  
Restructuring and other charges, net of tax $ 73,590   $ 73,590  
[1] The three-month and six-month periods ended June 30, 2012 include charges amounting to $94,703 ($73,590 after income taxes) in connection with our exit of the phosphorous flame retardants business.