Long-term Debt - Additional Information - Senior Credit Facility 1 (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	May 31, 2014
Maximum [Member]
Debt Instrument [Line Items]
Financial covenants that the borrower maintains, net of cash	$ 150.0
Maximum [Member] | Till November 30, 2015 [Member]
Debt Instrument [Line Items]
Maximum total leverage ratio	4.50
Maximum [Member] | Till November 30, 2017 [Member]
Debt Instrument [Line Items]
Maximum total leverage ratio	4.25
Maximum [Member] | Thereafter [Member]
Debt Instrument [Line Items]
Maximum total leverage ratio	4.00
Minimum [Member]
Debt Instrument [Line Items]
Interest coverage ratio	2.40