Restructuring (Summary of Changes in Restructuring Accruals) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 24, 2021	Sep. 25, 2020	Sep. 27, 2019
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 0	$ 15,851
Restructuring charges	10,240	1,821	$ 36,558
Cash payments	(10,073)	(22,194)
Non-cash charges		4,522
Restructuring reserve, ending balance	167	0	15,851
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0	128
Restructuring charges	9,522	0
Cash payments	(9,359)	(75)
Non-cash charges		(53)
Restructuring reserve, ending balance	163	0	128
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0	15,723
Restructuring charges	718	1,821
Cash payments	(714)	(22,119)
Non-cash charges		4,575
Restructuring reserve, ending balance	$ 4	$ 0	$ 15,723

Restructuring Reserve, Settled without Cash and Other Adjustments

No definition available.

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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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.

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