Investments In Associated Companies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 25, 2023	Jun. 26, 2022	Jun. 25, 2023	Jun. 26, 2022
TNI Partners
Schedule of Equity Method Investments [Line Items]
Distribution from equity method investments	$ 0.4	$ 0.7	$ 2.8	$ 2.9
MNI
Schedule of Equity Method Investments [Line Items]
Distribution from equity method investments	$ 0.2	$ 0.2	$ 0.5	$ 1.0
Equity method investments, ownership percentage	50.00%		50.00%

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21D
-URI https://asc.fasb.org/extlink&oid=126954810&loc=SL94080555-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration