Goodwill and Intangibles - Schedule of Acquired Intangibles in Accompanying Consolidated Balance Sheets (Details) $ in Thousands	6 Months Ended
Mar. 29, 2019 USD ($)
Finite-lived Intangible Assets [Roll Forward]
September 28, 2018	$ 572,952
Amortization	(37,349)
Foreign currency translation	(1,965)
March 29, 2019	533,638
Customer Relationships, Contracts and Backlog
Finite-lived Intangible Assets [Roll Forward]
September 28, 2018	568,323
Amortization	(36,168)
Foreign currency translation	(2,004)
March 29, 2019	530,151
Trade Names
Finite-lived Intangible Assets [Roll Forward]
September 28, 2018	2,102
Amortization	(889)
Foreign currency translation	39
March 29, 2019	1,252
Lease Intangible Assets
Finite-lived Intangible Assets [Roll Forward]
September 28, 2018	2,527
Amortization	(292)
Foreign currency translation	0
March 29, 2019	$ 2,235

Amortization of Intangible Assets, Excluding Discontinued Operations

No definition available.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

+ Details

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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