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NET INCOME (LOSS) PER COMMON SHARE - Calculations of Basic and Diluted Net Income Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Jul. 31, 2022
Jul. 31, 2021
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]        
Net income (loss) $ 56.8 $ (13.7) $ 181.6 $ 92.0
Weighted-average common and common equivalent shares outstanding — Basic (in shares) 66.8 67.5 67.3 67.3
Effect of dilutive securities        
Weighted-average common and common equivalent shares outstanding — Diluted (in shares) 67.2 67.5 67.7 67.8
Net income (loss) per common share        
Basic (in USD per share) $ 0.85 $ (0.20) $ 2.70 $ 1.37
Diluted (in USD per share) $ 0.85 $ (0.20) $ 2.68 $ 1.36
Restricted stock units        
Effect of dilutive securities        
Effect of dilutive securities (in shares) 0.3 0.0 0.2 0.4
Performance shares        
Effect of dilutive securities        
Effect of dilutive securities (in shares) 0.1 0.0 0.1 0.1