Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Aug. 29, 2020	Aug. 31, 2019
Deferred tax assets:
Net operating loss and credit carryforwards	$ 41,437	$ 42,958
Accrued benefits	88,226	58,900
Operating lease liabilities	617,002
Other	69,788	59,237
Total deferred tax assets	816,453	161,095
Less: Valuation allowances	(28,373)	(23,923)
Net deferred tax assets	788,080	137,172
Deferred tax liabilities:
Property and equipment	(173,696)	(114,956)
Inventory	(298,585)	(259,827)
Prepaid expenses	(55,827)	(46,487)
Operating lease assets	(581,381)
Other	(4,934)	(1,021)
Total deferred tax liabilities	(1,114,423)	(422,291)
Net deferred tax liabilities	$ (326,343)	$ (285,119)