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Organization and Significant Accounting Policies - Cost of Goods Sold, Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 25, 2021 | Sep. 26, 2020 | Sep. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Cost of shipping and handling included in selling, general and administrative expenses | $ 108.0 | $ 88.5 | $ 80.4

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