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Goodwill and Intangibles - Schedule of Acquired Intangibles in Accompanying Consolidated Balance Sheets (Details) $ in Thousands	9 Months Ended
	Jul. 02, 2021 USD ($)
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 658,340
Amortization	(103,308)
Acquired	1,078,192
Foreign currency translation	1,997
Ending balance	1,635,221
Customer Relationships, Contracts and Backlog
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	614,045
Amortization	(96,288)
Acquired	849,117
Foreign currency translation	3,323
Ending balance	1,370,197
Developed Technology
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	43,572
Amortization	(2,967)
Acquired	0
Foreign currency translation	311
Ending balance	40,916
Trade Names
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	723
Amortization	(4,053)
Acquired	229,075
Foreign currency translation	(1,637)
Ending balance	$ 224,108

X

- Definition

Finite-Lived Intangible Assets, Net, Acquired As Part Of Business Combination

+ References

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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-Name Accounting Standards Codification
-Topic 350
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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.

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

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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