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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Feb. 29, 2016
Feb. 28, 2015
Foreign Tax Authority [Member]    
Income Tax Examination [Line Items]    
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations   $ 1.8
Change in enacted tax rate $ 0.7  
Domestic Tax Authority [Member]    
Income Tax Examination [Line Items]    
Effective Income Tax Rate Reconciliation, Tax Credit, Amount 3.8 $ 3.8
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount 2.4  
Change in enacted tax rate $ 0.7