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POST RETIREMENT BENEFIT PLANS - Additional Information (Details)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
USD ($)
plan
Jan. 31, 2020
USD ($)
plan
Jan. 31, 2019
USD ($)
Oct. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Company's pension contributions   $ 9.0 $ 3.7  
United States | Pension Plans, Defined Benefit        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer contributions during period   44.3    
Decrease for settlement   (44.3)    
Gain due to settlement   $ (0.1)    
Number of plans | plan 2 2    
Obligation period decrease $ 19.0      
Plan assets, decrease $ 9.3      
Defined benefit plan, assumptions used, discount rate       3.38%