Fair Value Measurements - Company's Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 25, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets	$ 16,410	$ 22,515
Other long-term assets	65,751	53,699
Total	82,161	76,214
Contingent consideration	(242)
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	16,386	22,515
Other long-term assets	49,011	40,424
Total	65,397	62,939
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets	24
Other long-term assets	16,740	13,275
Total	16,764	13,275
Accrued expenses and other		(4,915)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ (242)