Short-Term Borrowings (Detail) - USD ($)				3 Months Ended
	Oct. 29, 2015	Oct. 22, 2015	Apr. 23, 2015	Feb. 29, 2016	Feb. 28, 2015	Nov. 30, 2015
Short-term Debt [Line Items]
Short-term borrowings				$ 311,885,000		$ 310,659,000
Interest rate on short-term borrowings outstanding				1.80%
Average daily short-term borrowings				$ 306,200,000	$ 39,000,000
Bank loans [Member]
Short-term Debt [Line Items]
Short-term borrowings				262,000,000		262,000,000
Secured revolving loan facility [Member]
Short-term Debt [Line Items]
Short-term borrowings				$ 49,885,000		$ 48,659,000
Line of Credit [Member] | Loan Facility [Member]
Short-term Debt [Line Items]
Revolving credit facility	$ 50,000,000
Line of Credit [Member] | Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Basis spread on variable rate	3.75%
Line of Credit [Member] | Intraday Credit Facility [Member]
Short-term Debt [Line Items]
Revolving credit facility			$ 500,000,000.0
Debt term			6 months
Extension term			6 months
Line of Credit [Member] | Intraday Credit Facility [Member] | Prime Rate [Member]
Short-term Debt [Line Items]
Basis spread on variable rate			0.50%
Line of Credit [Member] | Amended Intraday Credit Facility [Member]
Short-term Debt [Line Items]
Revolving credit facility		$ 300,000,000.0
Extension term		364 days