FAIR VALUE MEASUREMENTS - Schedule of Interest Rate Derivatives (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets:
Interest rate swap agreements	$ 0.0	$ 0.0
Liabilities:
Interest rate swap agreements	(53.5)	(22.4)
Interest Rate Swap
Assets:
Interest rate swap agreements	0.0	0.0
Liabilities:
Interest rate swap agreements	(53.5)	(22.4)
Fair Value, Inputs, Level 1 | Interest Rate Swap
Assets:
Interest rate swap agreements	0.0	0.0
Liabilities:
Interest rate swap agreements	0.0	0.0
Fair Value, Inputs, Level 2 | Interest Rate Swap
Assets:
Interest rate swap agreements	0.0	0.0
Liabilities:
Interest rate swap agreements	(53.5)	(22.4)
Fair Value, Inputs, Level 3 | Interest Rate Swap
Assets:
Interest rate swap agreements	0.0	0.0
Liabilities:
Interest rate swap agreements	$ 0.0	$ 0.0