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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 10, 2020
segment
Mar. 09, 2020
segment
Jul. 30, 2019
segment
Jul. 29, 2019
segment
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
segment
Jun. 30, 2019
USD ($)
segment
Dec. 31, 2019
USD ($)
Deferred financing fees         $ 9.3   $ 9.3   $ 11.4
Amortization of deferred financing fees         1.0 $ 0.8 2.1 $ 1.5  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                  
Balance at the beginning of the period             21.5 21.9  
Change in fair value             (0.3) (0.4)  
Balance at the end of the period         21.2 21.5 $ 21.2 $ 21.5  
Number of operating segments | segment 10 13 13 16     13 16  
Number of reportable segments | segment               2  
Dilutive effect         0.0 $ 0.0 $ 0.0 $ 0.0  
Assets held for sale         $ 4.9   $ 4.9    
Series A                  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                  
Preferred stock dividend rate (as a percent)         7.625% 7.625% 7.625% 7.625%