Summary of Significant Accounting Policies - Schedule of Derivative Instruments on the Consolidated Balance Sheets (Details) - USD ($) $ in Millions	12 Months Ended
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

Fair value of all asset derivatives designated as cash flow hedging instruments.

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

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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

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