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RESTRUCTURING AND COST REDUCTION INITIATIVES - Restructuring Reserve (Details) - USD ($)
$ in Millions
9 Months Ended 15 Months Ended
Sep. 30, 2020
Dec. 31, 2021
Restructuring Reserve [Roll Forward]    
Balance as of December 31, 2019 $ 0.2 $ 0.7
Provisions and accruals 20.7  
Cash payments (20.2)  
Balance as of September 30, 2020 0.2 0.7
North America Operations Optimization    
Restructuring Reserve [Roll Forward]    
Balance as of December 31, 2019 0.0 0.4
Provisions and accruals 12.6  
Cash payments (12.2)  
Balance as of September 30, 2020 0.0 0.4
Workforce Reduction and Other Cost Initiatives    
Restructuring Reserve [Roll Forward]    
Balance as of December 31, 2019 0.2 0.3
Provisions and accruals 8.1  
Cash payments (8.0)  
Balance as of September 30, 2020 $ 0.2 $ 0.3