Company's Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Nov. 17, 2012	Aug. 25, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets	$ 19,117	$ 22,515
Other long-term assets	62,735	53,699
Total	81,852	76,214
Accrued expenses and other		(4,915)
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets	19,117	22,515
Other long-term assets	46,802	40,424
Total	65,919	62,939
Accrued expenses and other
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets
Other long-term assets	15,933	13,275
Total	15,933	13,275
Accrued expenses and other		(4,915)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets
Other long-term assets
Total
Accrued expenses and other