LEASES - Summary of Weighted-Average Lease Term and Discount Rate (Details)	Jul. 04, 2021	Sep. 30, 2020
Weighted average remaining lease term
Operating leases	6 years 4 months 24 days	6 years 7 months 6 days
Finance leases	15 years 2 months 12 days	15 years 7 months 6 days
Weighted average discount rate
Operating leases	4.30%	4.70%
Finance leases	5.70%	5.60%