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Revenue Recognition - Contracted Balances (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2020	Sep. 27, 2019
Cost of services provided
Disaggregation of Revenue [Line Items]
Capitalized contract cost, amortization	$ 21.8	$ 20.0
Cost of services provided | Uniform
Disaggregation of Revenue [Line Items]
Capitalized contract cost, amortization	325.7	318.2
Cost of services provided | Operating Lease Right-of-Use Assets
Disaggregation of Revenue [Line Items]
Capitalized contract cost, amortization	23.1	16.0
Depreciation and amortization
Disaggregation of Revenue [Line Items]
Capitalized contract cost, amortization	20.8	20.5
Depreciation and amortization | Property, Plant and Equipment | Leasehold Improvements
Disaggregation of Revenue [Line Items]
Capitalized contract cost, amortization	$ 160.8	$ 149.0

X

- 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

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+ References

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