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Intangible Assets - Schedule Of Estimated Weighted Average Useful Of The Identified Intangible Assets (Detail)
12 Months Ended
Sep. 25, 2021
Customer relationships [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Estimated weighted average useful life 10 years
Trademarks [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Estimated weighted average useful life 3 years