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Derivatives Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 01, 2017 | Jun. 25, 2016 | Jul. 01, 2017 | Jun. 25, 2016 | Sep. 26, 2015 | Sep. 24, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |  |  |
Interest Rate Cap Agreements Aggregate Premium Payable |  |  |  |  | $ 13.2 |
Principal Amount Of Borrowings | $ 1,000.0 |  | $ 1,000.0 |  |  |
Interest Payment Duration | three-year |  |  |  |  |
Loss reclassified from accumulated other comprehensive loss to the statement of income | $ (1.6) | $ (1.2) | (4.9) | $ (2.2) |  |
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred |  |  | 4.4 |  |  |
Interest Rate Cash Flow Hedge Asset at Fair Value | 2.6 |  | 2.6 |  |  | $ 1.4
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments | 1.1 | 0.2 | 4.0 | 0.8 |  |
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax | 3.5 | $ 0.2 | 1.1 | $ 0.6 |  |
Notional Amount | $ 42.3 |  | $ 42.3 |  |  |

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- Definition Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as 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 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 + Details
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