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Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended
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Aug. 31, 2024 USD ($) Segment shares | Aug. 26, 2023 USD ($) shares | Aug. 27, 2022 USD ($) shares
Summary of Significant Accounting Policies [Line Items] |  |  |
Number of reporting segments | Segment | 5 |  |
Short-term investments | $ 13,505,000 | $ 10,157,000 |
Percentage of revenues derived from route servicing fees | 84.20% |  |
Estimated service lives of rental merchandise, minimum | 6 months |  |
Estimated service lives of rental merchandise, maximum | 36 months |  |
Impairment of goodwill and definite-lived intangible assets | $ 0 | 0 | $ 0
Weighted average useful life | 12 years 10 months 24 days |  |
Capitalized costs | $ 18,900,000 | 2,200,000 |
Discount rate, lower range | 4.20% |  |
Discount range, upper range | 4.30% |  |
Inflation rate | 3.00% |  |
Advertising costs | $ 5,300,000 | $ 9,900,000 | $ 14,700,000
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares) | shares | 60,260 | 51,708 | 34,416
Conversion of Class B Common Stock in to Common Stock |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Conversion ratio | 1 |  |
Stock Appreciation Rights (SARs) |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Expiration period | 10 years |  |
Stock Appreciation Rights (SARs) | Certain Share-based Awards Granted During Fiscal 2020, 2019 and 2018 to Non-employee Directors | Non-Employee Directors |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Expiration period | 8 years |  |
Minimum |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Discount period, lower range | 20 years |  |
Remaining lives | 1 year |  |
Credit adjusted risk-free rate | 7.00% |  |
Maximum |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Discount period, upper range | 30 years |  |
Remaining lives | 21 years |  |
Credit adjusted risk-free rate | 7.50% |  |
Customer Contracts |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Weighted average useful life | 14 years 7 months 6 days |  |
Other Intangible Assets |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Weighted average useful life | 8 years 6 months |  |
Core Laundry Operations |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Percentage of revenues recognized over time | 88.40% | 88.40% | 88.40%
Percentage of revenues recognized at a point in time | 11.60% | 11.60% | 11.60%
Specialty Garments |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Percentage of revenues recognized over time | 84.20% | 83.90% | 83.80%
Percentage of revenues recognized at a point in time | 15.80% | 16.10% | 16.20%
First Aid |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Percentage of revenues recognized over time | 0.00% | 0.00% | 0.00%
Percentage of revenues recognized at a point in time | 100.00% | 100.00% | 100.00%

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