The maximum potential liability to the Company if the terminal fair value coming off the lease was zero.

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Commitments and Contingencies (Details) - USD ($)	3 Months Ended	12 Months Ended
Commitments and Contingencies (Details) - USD ($)	Jan. 01, 2021	Sep. 27, 2019
Loss Contingencies [Line Items]
Residual value guarantee accrual, period accrual	$ 0
Pending Litigation
Loss Contingencies [Line Items]
Estimate of possible loss	19,700,000
Chairman, President and Chief Executive Officer \| Employee severance and other costs \| Accrued Payroll and Related Expenses
Loss Contingencies [Line Items]
Severance costs		$ 10,400,000
Severance costs accrual, current	4,300,000
Maximum
Loss Contingencies [Line Items]
Residual value guarantee	28,900,000
Residual value of leased asset	$ 0
Vehicles \| Minimum
Loss Contingencies [Line Items]
Lease term	1 year
Vehicles \| Maximum
Loss Contingencies [Line Items]
Lease term	12 years