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EARNINGS PER COMMON SHARE - Calculation of Earnings per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Jul. 01, 2023
Jul. 02, 2022
Jul. 01, 2023
Jul. 02, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Net income (loss) $ 43.7 $ (443.9) $ 88.3 $ (217.5)
Basic net loss per common share:        
Weighted-average common shares outstanding during the period (in shares) 56,200,000 55,400,000 55,900,000 55,600,000
Income (loss) from continuing operations (USD per share) $ 0.78 $ (8.01) $ 1.58 $ (3.91)
Diluted net income (loss) per common share        
Weighted-average common shares outstanding during the period (in shares) 56,200,000 55,400,000 55,900,000 55,600,000
Dilutive potential Common Shares (in shares) 400,000 0 400,000 0
Weighted-average common shares outstanding during the period plus dilutive potential common shares (in shares) 56,600,000 55,400,000 56,300,000 55,600,000
Diluted income (loss) per common share (USD per share) $ 0.77 $ (8.01) $ 1.57 $ (3.91)
Number of anti-dilutive potential common shares excluded from the calculation (in shares)   400,000   600,000
Options        
Diluted net income (loss) per common share        
Number of anti-dilutive potential common shares excluded from the calculation (in shares) 200,000 200,000 400,000 200,000