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CREDIT FACILITIES AND DEBT (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jan. 24, 2020
May 30, 2017
Gain (loss) on extinguishment of debt $ 60.3 $ 0.0 $ 60.3 $ (22.2)    
2025 Senior Notes [Member]            
Interest rate           7.25%
Extinguishment of Debt, Amount 35.0          
Repayments of Long-term Debt     21.2 0.0    
2028 Senior Notes [Member]            
Interest rate         6.00%  
Extinguishment of Debt, Amount $ 117.7          
Repayments of Long-term Debt     69.7 $ 0.0    
Senior Notes, 2025 and 2028            
Repayments of Long-term Debt     $ 90.9