Long-term Debt - Actual Ratios and Required Ratios Under Financial Covenants (Detail) (Senior Credit Facility [Member])	9 Months Ended
	Aug. 31, 2014
Debt Instrument [Line Items]
Interest coverage ratio, as defined under the Senior Credit Facility	3.39
Leverage ratio, as defined under the Senior Credit Facility	3.75
Minimum [Member]
Debt Instrument [Line Items]
Interest coverage ratio, as defined under the Senior Credit Facility	2.4
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio, as defined under the Senior Credit Facility	4.50