SHARE-BASED COMPENSATION - Carrying Unit Award Activity (Details) - Carry Unit Plan - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Weighted Average Grant Date Fair Value
Balance at beginning of period, weighted average grant date fair value (in dollars per share)	$ 1.14	$ 0.71	$ 0.37
Vested weighted average grant date fair value (in dollars per share)	0.83	0.37	0.41
Granted weighted average grant date fair value (in dollars per share)			3.14
Forfeited weighted average grant date fair value (in dollars per share)	0.84	0.62	0.37
Balance at end of period, weighted average grant date fair value (in dollars per share)	2.35	$ 1.14	$ 0.71
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Converted to Restricted Shares Weighted Average Fair Value	$ 0.37
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares)	83,575,000	168,550,001	192,800,000
Vested (in shares)	(42,618,750)	(68,037,500)	(44,420,833)
Forfeited (in shares)	(3,437,500)	(16,937,501)	(7,854,166)
Granted (in shares)			28,025,000
Ending balance (in shares)	37,518,750	83,575,000	168,550,001
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares)	10,000,000	10,000,000	10,000,000
Converted to restricted shares	10,000,000
Ending balance (in shares)	0	10,000,000	10,000,000