Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 29, 2018	Sep. 30, 2017
Designated As Hedging Instruments \| Interest Rate Swaps
Derivative
Notional Amount, Derivatives	$ 150,000
Conversion rate of interest rate swaps from variable to fixed	2.87%
Applicable margin included in conversion rate of interest rate swaps, basis spread	1.63%
Designated As Hedging Instruments \| Foreign Currency Contracts
Derivative
Notional Amount, Derivatives	$ 48,799
Designated As Hedging Instruments \| Net Investment Hedges
Derivative
Notional Amount, Derivatives	0
Not Designated As Hedging Instruments \| Foreign Currency Contracts
Derivative
Notional Amount, Derivatives	96,267
Net loss on foreign currency forwards not designated as hedging instruments	$ 3,104	$ 566

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Conversion rate of interest rate swaps.

+ References

No definition available.

+ Details

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- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

No definition available.

+ 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.

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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