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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Outstanding Commodity Contracts (Details)
 3 Months Ended 12 Months Ended
Jan. 02, 2021
T
lb
gal
Dec. 28, 2019
lb
T
gal
Sep. 30, 2020
T
lb
gal
Urea (in tons)      
Derivative [Line Items]      
Outstanding commodity contracts, mass | T 40,500 45,500 76,500
Resin (in pounds)      
Derivative [Line Items]      
Outstanding commodity contracts, mass | lb 4,000,000 11,000,000 9,100,000
Diesel (in gallons)      
Derivative [Line Items]      
Outstanding commodity contracts, volume 4,704,000 4,368,000 5,838,000
Heating Oil (in gallons)      
Derivative [Line Items]      
Outstanding commodity contracts, volume 2,100,000 1,344,000 2,142,000