Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 29, 2015	Aug. 30, 2014
Deferred tax assets:
Net operating loss and credit carryforwards	$ 49,088	$ 40,507
Accrued benefits	85,266	79,932
Pension	21,104	21,493
Other	56,125	59,432
Total deferred tax assets	211,583	201,364
Less: Valuation allowances	(8,833)	(10,604)
Net deferred tax assets	202,750	190,760
Deferred tax liabilities:
Property and equipment	(68,920)	(59,016)
Inventory	(294,242)	(273,005)
Prepaid Expenses	(27,134)	(15,694)
Other	(25,270)	(21,091)
Total deferred tax liabilities	(415,566)	(368,806)
Net deferred tax liability	$ (212,816)	$ (178,046)