Schedule of sharebased compensation restricted stock and restricted stock units activity [Line items].

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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Unit-based Compensation - Summary of VAP Units outstanding and vested - Parenthetical (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 26, 2022	Mar. 27, 2021	Mar. 26, 2022	Mar. 27, 2021	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Schedule of Share based Compensation Restricted Stock And Restricted Stock Units Activity [Line Items]
Share based compensation by share based award equity instruments other than options unallocated share based compensation					$ 1.2
Share based compensation by share based award remaining period of recognition					2 years
Officers Employees And Directors [Member] \| Value Appreciation Rights [Member]
Schedule of Share based Compensation Restricted Stock And Restricted Stock Units Activity [Line Items]
Allocated share based compensation	$ 0.9	$ 0.1	$ 1.1	$ 0.1	$ 11.6	$ 0.1	$ 0.0
Share based compensation by share based award equity instruments other than options unallocated share based compensation	$ 0.4		$ 0.4
Share based compensation by share based award remaining period of recognition			1 year 6 months