Revenue Recognition - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
May 25, 2019 USD ($)	May 25, 2019 USD ($)
Disaggregation of Revenue [Line Items]
Percentage of revenues derived from route servicing fees		91.00%
Current assets related to deferred commissions	$ 10.8	$ 10.8
Noncurrent assets related to deferred commissions	46.2	46.2
Amortization expense related to deferred commissions	$ 3.0	$ 8.7
Core Laundry Operations
Disaggregation of Revenue [Line Items]
Percentage of revenues recognized over time	95.80%	95.50%
Percentage of revenues recognized at a point in time	4.20%	4.50%
Specialty Garments
Disaggregation of Revenue [Line Items]
Percentage of revenues recognized over time	80.10%	82.00%
Percentage of revenues recognized at a point in time	19.90%	18.00%
First Aid
Disaggregation of Revenue [Line Items]
Percentage of revenues recognized at a point in time	100.00%	100.00%

Revenue From Contracts With Customers, Percentage Of Revenues From Route Servicing Fees

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Revenue, Performance Obligation, Percentage Of Revenues Satisfied At A Point In Time

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Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
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-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as noncurrent.

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