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LONG-TERM DEBT - Summary of Long-Term Debt (Details) - USD ($)
$ in Millions
Jan. 31, 2021
Oct. 31, 2020
Debt Instrument [Line Items]    
Long-term debt $ 2,505.3 $ 2,469.7
Less: current portion 133.6 123.1
Less: deferred financing costs 12.1 11.1
Long-term debt, net 2,359.6 2,335.5
2019 Credit Agreement    
Debt Instrument [Line Items]    
Long-term debt 1,462.5  
Term Loan | 2019 Credit Agreement    
Debt Instrument [Line Items]    
Long-term debt 1,365.8 1,429.8
Domestic Line of Credit    
Debt Instrument [Line Items]    
Long-term debt 305.4 310.0
Revolving Credit Facility | 2019 Credit Agreement    
Debt Instrument [Line Items]    
Long-term debt 96.7 0.0
Less: current portion 133.6  
Long-term debt, net 1,328.9  
Senior Notes | Senior Notes due 2027    
Debt Instrument [Line Items]    
Long-term debt 495.3 495.1
Senior Notes | Senior Notes due 2021    
Debt Instrument [Line Items]    
Long-term debt $ 242.1 $ 234.8