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Summary of Significant Accounting Policies - Schedule of Derivative Instruments on the Consolidated Balance Sheets (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2017 | Sep. 24, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net | $ 0.8 | $ (3.4)
Interest rate caps - derivative |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 4.8 | 1.4
Interest rate caps - 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 | 3.6 | 1.0
Interest rate caps - derivative | Other Assets [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | 1.2 | 0.4
Forward foreign currency contracts | 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 | 0.2
Forward foreign currency contracts | Accrued Liabilities [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | $ 4.0 | $ 1.3

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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=64837297&loc=SL5624163-113959 + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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