SHARE-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Share-based Payment Arrangement [Abstract]

Activity for Shares

The following table summarizes activity relating to these carry units:

	Number of Time Vesting Awards	Number of Performance Based Vesting Awards	Weighted Average Grant Date Fair Value
Balance, December 31, 2016	192,800,000	10,000,000	$	0.37
Granted	28,025,000	—	3.14
Vested	(44,420,833)	—	0.41
Forfeited	(7,854,166)	—	0.37
Balance, December 31, 2017	168,550,001	10,000,000	0.71
Vested	(68,037,500)	—	0.37
Forfeited	(16,937,501)	—	0.62
Balance, December 31, 2018	83,575,000	10,000,000	1.14
Vested	(42,618,750)	—	0.83
Converted to restricted shares	—	(10,000,000)	0.37
Forfeited	(3,437,500)	—	0.84
Balance, December 31, 2019	37,518,750	—	2.35

Share-based Compensation, Stock Options, Activity

The following table summarizes activity related to employee stock options:

	Shares Under Option		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (in years)
	Time Vesting	Performance Based Vesting				Aggregate Intrinsic Value (a)
Balance at December 31, 2017	5,110,747	—	$	17.45	9.97	$	8,331
Granted	6,753,659	95,953	17.58
Forfeited	(634,238)	(22,314)	17.92
Balance at December 31, 2018	11,230,168	73,639	17.50		9.47	$	—
Granted	3,677,076	—	23.88
Exercised	(184,147)	—	17.43
Forfeited	(639,356)	(73,639)	18.42
Balance at December 31, 2019	14,083,741	—	19.12		8.74	112,915
Options exercisable at December 31, 2019	878,225	—	17.65		8.08	8,512

(a)The aggregate intrinsic value is calculated as the difference between the exercise price and the closing price of the Company's Class A common stock at the respective date.

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

	Year Ended December 31,
	2019	2018	2017
Risk-free interest rate	2.05%	2.74%	2.30%
Expected life (in years)	6.47	6.49	6.44
Dividend yield	—%	—%	—%
Volatility	28.22%	35.72%	33.95%
Grant date fair value	$7.93	$6.91	$8.77