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DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (ABL Facility) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
ABL Facility [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 450.0 $ 450.0
Line of Credit Facility, Current Borrowing Capacity 395.7 323.7
Credit facility, amount outstanding 0.0 0.0
Line of Credit Facility, Remaining Borrowing Capacity 357.8 268.7
Letter of Credit [Member]    
Line of Credit Facility [Line Items]    
Credit facility, amount outstanding $ (37.9) $ (55.0)