Fair Value of Financial Instruments - Estimate Fair Value of Financial Instruments (Details)	Sep. 25, 2022 yr $ / shares	Sep. 26, 2021 yr $ / shares	Sep. 27, 2020 yr $ / shares
Volatility (Percent)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input	0	0.43	0.84
Risk-free interest rate (Percent)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input	0	0.0005	0.0012
Expected term (Years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input | yr	0	0.5	1.5
Estimated fair value (Dollars)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input | $ / shares	0	0.12	0.06