v3.20.4
DERIVATIVES AND FAIR VALUE MEASUREMENTS Narrative 1 (Details) - USD ($)
$ in Millions
1 Months Ended
May 31, 2020
Jun. 30, 2020
May 31, 2020
Apr. 30, 2018
Apr. 15, 2018
Derivative Instruments, Gain (Loss) [Line Items]          
Cash paid for termination of interest rate swaps   $ 49.2      
Cash received from termination of interest rate swaps       $ 8.0  
Cash Flow Hedges          
Derivative Instruments, Gain (Loss) [Line Items]          
Interest rate swaps interest rate received     received a rate based on the three-month USD LIBOR    
Interest rate swaps | Cash Flow Hedges          
Derivative Instruments, Gain (Loss) [Line Items]          
Notional amount of forward-starting interest rate swaps terminated $ 250.0     $ 350.0  
7.65% senior notes          
Derivative Instruments, Gain (Loss) [Line Items]          
Long-term debt, rate         7.65%