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Revenue Recognition - Contracted Balances (Details) - USD ($) $ in Millions | 12 Months Ended
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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

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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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