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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
Aug. 31, 2016
Nov. 30, 2015
Income Tax Disclosure [Abstract]    
Unrecognized tax benefits $ 106.1 $ 107.9
Unrecognized tax benefits that would impact effective tax rate in future 71.0 71.9
Accrued interest on unrecognized tax benefits $ 38.3 $ 32.8