Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Income Tax Examination [Line Items]
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations		$ 5.0	$ 0.9
Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	$ 0.2			$ 1.8
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	6.4	8.6	6.4
Change in enacted tax rate			1.0
Domestic Tax Authority [Member]
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	$ 6.9	$ 13.4	10.7	17.2
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount			$ 2.4	$ 3.8