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Employee Pension and Profit Sharing Plans - Schedule of Assumptions Used (Details)
12 Months Ended
Sep. 29, 2023
Sep. 30, 2022
Assumptions Used to Calculate Pension Expense [Abstract]    
Discount rate 5.10% 2.10%
Rate of compensation increase 0.50% 2.20%
Long-term rate of return on assets 5.20% 4.80%
Assumptions Used to Calculate Funded Status [Abstract]    
Discount rate 5.40% 4.90%
Rate of compensation increase 0.60% 2.00%