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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Feb. 27, 2021 | Feb. 29, 2020 | Feb. 27, 2021 | Feb. 29, 2020 | Aug. 29, 2020
Revenue From Contract With Customer [Abstract] |  |  |  |  |
Percentage of revenues derived from route servicing fees | 91.10% | 90.20% | 91.10% | 90.90% |
Current assets related to deferred commissions | $ 13.8 |  | $ 13.8 |  | $ 13.3
Noncurrent assets related to deferred commissions | 58.3 |  | 58.3 |  | $ 55.6
Amortization expense related to deferred commissions | $ 3.6 | $ 3.4 | $ 7.1 | $ 6.7 |

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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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