Long-term Debt - Actual Ratios and Required Ratios Under Financial Covenants (Detail) (Senior Credit Facility [Member])	6 Months Ended
	May 31, 2014
Debt Instrument [Line Items]
Interest coverage ratio, as defined under the Senior Credit Facility	3.67
Leverage ratio, as defined under the Senior Credit Facility	3.85
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio, as defined under the Senior Credit Facility	4.50
Minimum [Member]
Debt Instrument [Line Items]
Interest coverage ratio, as defined under the Senior Credit Facility	2.4