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Derivatives Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Millions | Dec. 30, 2017 | Sep. 30, 2017
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Designated as Hedging Instrument [Member] | Interest rate cap - derivative |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | $ 5.3 | $ 4.8
Designated as Hedging Instrument [Member] | Interest rate cap - derivative | Prepaid Expenses and Other Current Assets [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 5.3 | 3.6
Designated as Hedging Instrument [Member] | Interest rate cap - derivative | Other Assets [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 0.0 | 1.2
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 0.4 | 0.4
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Accrued Liabilities [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | $ 2.6 | $ 4.0

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- Definition Fair value of all asset derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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