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Fair Value Measurements - Additional Information (Detail) - USD ($)	Mar. 26, 2022	Sep. 25, 2021	Sep. 26, 2020
Fair Value, Recurring [Member]
Fair Value Disclosures [Line Items]
Liabilities at fair value	$ 0	$ 0	$ 0

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- References

No definition available.

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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