EQUITY-BASED COMPENSATION - Long Term Incentive Plan Awards (Details) - Long-Term Incentive Plan - Employees and Directors - LTIP Awards $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted	$ 0.0	$ 42.8
Vesting period		4 years 8 months 12 days
Compensation expense, expected	42.1	$ 42.1
Weighted average period of recognition non-vested equity-based awards		4 years 1 month 6 days
Compensation expense, recognized	$ 3.7	$ 7.3

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Value, before forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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