Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
	Aug. 26, 2023 USD ($) store class shares	Aug. 27, 2022 USD ($) shares	Aug. 28, 2021 USD ($) shares
Significant Accounting Policies [Line Items]
Number of stores with commercial sales program | store	5,682
Description of reporting periods	The Company’s fiscal year consists of 52 or 53 weeks ending on the last Saturday in August. Fiscal 2023, 2022 and 2021 represented 52 weeks.
Additional capital contributions to tax credit funds	$ 9,300
Cash and cash equivalents	277,054	$ 264,380
Allowances for credit losses	7,700	9,500
Inventory LIFO Reserves	59,000	15,000
Goodwill	302,645	302,645
Self insurance reserve	$ 268,800	264,300
Renewal options and lease term	The leases have varying terms and expire at various dates through 2046. Retail leases typically have initial terms between one and 20 years, with one to six optional renewal periods of one to five years each.
Measure of income tax benefit for uncertain income tax positions	more than 50%
Advertising expense, net of vendor promotional funds	$ 99,500	97,100	$ 85,900
Vendor promotional funds, which reduced advertising expense	$ 62,400	52,100	$ 53,200
Limited warranty period, minimum period (Days)	30 days
Products accounted for total revenues	one class of similar products accounted for approximately 14 percent of the Company’s total revenues. No other class of similar products accounted for 10 percent or more of total revenues
Products accounted for total purchases	no individual vendor provided more than 10 percent of total purchases
Cash Equivalents
Significant Accounting Policies [Line Items]
Maturity period of investments	90 days or less
Settlement term of credit and debit card transaction	less than five days
Credit and debit card receivables included within cash and cash equivalents	$ 88,600	$ 78,400
Product Concentration Risk
Significant Accounting Policies [Line Items]
Number of class of similar products | class	1
Employee Stock Option [Member]
Significant Accounting Policies [Line Items]
Anti-dilutive shares excluded from the computation of earnings per share | shares	140,071	142,887	171,652
Minimum [Member] | Building
Significant Accounting Policies [Line Items]
Estimated useful lives	40 years
Minimum [Member] | Building Improvements
Significant Accounting Policies [Line Items]
Estimated useful lives	5 years
Minimum [Member] | Equipment
Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Minimum [Member] | Vehicles
Significant Accounting Policies [Line Items]
Finance lease term	1 year
Minimum [Member] | Land and Building
Significant Accounting Policies [Line Items]
Finance lease term	20 years
Minimum [Member] | Product Concentration Risk | Sales Revenue, Net
Significant Accounting Policies [Line Items]
Concentration risk percentage	10.00%
Minimum [Member] | Supplier Concentration Risk | Cost of Goods, Total [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	10.00%
Maximum [Member] | Building
Significant Accounting Policies [Line Items]
Estimated useful lives	50 years
Maximum [Member] | Building Improvements
Significant Accounting Policies [Line Items]
Estimated useful lives	15 years
Maximum [Member] | Equipment
Significant Accounting Policies [Line Items]
Estimated useful lives	10 years
Maximum [Member] | Vehicles
Significant Accounting Policies [Line Items]
Finance lease term	5 years
Maximum [Member] | Product Concentration Risk | Sales Revenue, Net
Significant Accounting Policies [Line Items]
Concentration risk percentage	14.00%
Variable Interest Entity Not Primary Beneficiary
Significant Accounting Policies [Line Items]
Additional capital contributions to tax credit funds	$ 9,300
Variable Interest Entity Not Primary Beneficiary | Other long-term assets
Significant Accounting Policies [Line Items]
Maximum exposure to losses amount	$ 29,600	$ 14,100
Stores in the United States Including Puerto Rico
Significant Accounting Policies [Line Items]
Number of stores | store	6,300
Brazil
Significant Accounting Policies [Line Items]
Number of stores | store	100
Mexico
Significant Accounting Policies [Line Items]
Number of stores | store	740
Non-US
Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 108,500	$ 86,800