Loss Contingency, Number of Class Action Lawsuits

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Commitments and Contingencies (Details) $ in Millions	12 Months Ended
Commitments and Contingencies (Details) $ in Millions	Sep. 27, 2019 USD ($) Lawsuit	Mar. 27, 2020 USD ($)	Nov. 30, 2019 USD ($)
Loss Contingencies [Line Items]
Number of class action lawsuits \| Lawsuit	2
Accrued Expenses and Other Current Liabilities
Loss Contingencies [Line Items]
Estimate of possible loss			$ 21.0
Chairman, President and Chief Executive Officer \| Employee severance and other costs \| Accrued Payroll and Related Expenses
Loss Contingencies [Line Items]
Severance costs	$ 10.4
Severance accrual noncurrent		$ 7.9