Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
	Aug. 31, 2024 USD ($) store shares	Aug. 26, 2023 USD ($) shares	Aug. 27, 2022 USD ($) shares
Significant Accounting Policies [Line Items]
Number of stores with commercial sales program | store	5,898
Description of reporting periods	The Company’s fiscal year consists of 52 or 53 weeks ending on the last Saturday in August. Fiscal 2024 represented 53 weeks. Fiscal 2023 and 2022 represented 52 weeks.
Additional capital contributions to tax credit funds	$ 49,300
Cash and cash equivalents	298,172	$ 277,054
Allowances for credit losses	10,300	7,700
Inventory LIFO Reserves	19,000	59,000
Goodwill	302,645	302,645
Self insurance reserve	$ 257,700	268,800
Renewal options and lease term	The leases have varying terms and expire at various dates through 2044. Real estate operating leases typically have initial terms between one and 20 years, and real estate finance leases typically have terms of 20 or more years, with multiple 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	$ 102,700	99,500	$ 97,100
Vendor promotional funds, which reduced advertising expense	$ 67,800	62,400	$ 52,100
Limited warranty period, minimum period (Days)	30 days
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	$ 91,500	$ 88,600
Stock Options
Significant Accounting Policies [Line Items]
Anti-dilutive shares excluded from the computation of earnings per share | shares	118,771	140,071	142,887
Minimum | Building
Significant Accounting Policies [Line Items]
Estimated useful lives	40 years
Minimum | Building Improvements
Significant Accounting Policies [Line Items]
Estimated useful lives	5 years
Minimum | Equipment
Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Minimum | Vehicles
Significant Accounting Policies [Line Items]
Finance lease term	1 year
Maximum | Building
Significant Accounting Policies [Line Items]
Estimated useful lives	50 years
Maximum | Building Improvements
Significant Accounting Policies [Line Items]
Estimated useful lives	15 years
Maximum | Equipment
Significant Accounting Policies [Line Items]
Estimated useful lives	10 years
Maximum | Vehicles
Significant Accounting Policies [Line Items]
Finance lease term	5 years
Variable Interest Entity Not Primary Beneficiary
Significant Accounting Policies [Line Items]
Additional capital contributions to tax credit funds	$ 26,300
Variable Interest Entity Not Primary Beneficiary | Other long-term assets
Significant Accounting Policies [Line Items]
Maximum exposure to losses amount	$ 53,900	$ 29,600
One individual vendor | Supplier Concentration Risk | Cost of Goods and Service Benchmark [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	12.00%
One class of similar products | Maximum | Product Concentration Risk | Revenue Benchmark [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	15.00%
Stores in the United States Including Puerto Rico
Significant Accounting Policies [Line Items]
Number of stores | store	6,432
Brazil
Significant Accounting Policies [Line Items]
Number of stores | store	127
Mexico
Significant Accounting Policies [Line Items]
Number of stores | store	794
Non-US
Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 99,800	$ 108,500