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Significant Accounting Policies - Revenue Recognition (Details) | 12 Months Ended
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Nov. 29, 2020 | Nov. 24, 2019 | Nov. 25, 2018
Sales Revenue, Services, Net | Customer Concentration Risk [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Concentration risk, percentage | 29.00% | 26.00% | 27.00%

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