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Significant Accounting Policies - Additional Information (Detail) $ in Thousands | 12 Months Ended |
--- | --- | ---
Aug. 28, 2021 USD ($) class store shares | Aug. 29, 2020 USD ($) shares | Aug. 31, 2019 USD ($) shares | Aug. 25, 2018 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of stores with commercial sales program | store | 5,179 |  |  |
Description of reporting periods | The Company’s fiscal year consists of 52 or 53 weeks ending on the last Saturday in August. Fiscal 2021 and 2020 represented 52 weeks and 2019 represented 53 weeks. |  |  |
Cash and cash equivalents | $ 1,171,335 | $ 1,750,815 | $ 176,300 | $ 217,824
Allowances for credit losses | 11,400 | 10,000 |  |
Unrecorded adjustment for LIFO value in excess of replacement value | 335,300 | 357,000 |  |
Goodwill | 302,645 | 302,645 |  |
Self insurance reserve | $ 284,000 | 288,600 |  |
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 | $ 85,900 | 77,600 | 87,500 |
Vendor promotional funds, which reduced advertising expense | $ 53,200 | 39,400 | $ 32,200 |
Limited warranty period, minimum period (Days) | 30 days |  |  |
Products accounted for total revenues | one class of similar products accounted for approximately 13 percent of the Company’s total revenues, and one vendor supplied approximately 10 percent of the Company’s total purchases. No other class of similar products accounted for 10 percent or more of total revenues |  |  |
Products accounted for total purchases | one vendor supplied approximately 10 percent of the Company’s total purchases. No other class of similar products accounted for 10 percent or more of total revenues |  |  |
Auto Parts Stores |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Goodwill | $ 302,600 | 302,600 |  |
Cash Equivalents [Member] |  |  |  |
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 | $ 70,500 | $ 63,700 |  |
Product Concentration Risk |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of class of similar products accounted for approximately 13% of the company's total revenues | class | 1 |  |  |
Stock Options |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Anti-dilutive shares excluded from the computation of earnings per share | shares | 171,652 | 169,460 | 90,314 |
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 |  |  |
Minimum | Land and Building |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Finance lease term | 20 years |  |  |
Minimum | Product Concentration Risk | Sales Revenue, Net |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage | 10.00% |  |  |
Minimum | Supplier Concentration Risk | Cost of Goods, Total |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage | 10.00% |  |  |
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 |  |  |
Maximum | Product Concentration Risk | Sales Revenue, Net |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage | 13.00% |  |  |
Maximum | Supplier Concentration Risk | Cost of Goods, Total |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage | 10.00% |  |  |
Variable Interest Entity Not Primary Beneficiary Member | Other long-term assets |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Maximum exposure to losses amount | $ 11,800 | $ 6,500 |  |
Stores in the United States Including Puerto Rico [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of stores | store | 6,051 |  |  |
Brazil [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of stores | store | 52 |  |  |
Mexico [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of stores | store | 664 |  |  |
Non-US [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Cash and cash equivalents | $ 80,400 | $ 62,400 |  |

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