COMMON STOCK AND SHARE-BASED COMPENSATION (Performance Shares) (Details) - Performance shares - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Number of Performance Shares
Nonvested , beginning balance (in shares)	688,423
Granted (in shares)	7,951,541
Vested (in shares)	(132,526)
Forfeited (in shares)	(1,218,656)
Nonvested, ending balance (in shares)	7,288,782	688,423
Weighted Average Grant- Date Fair Value
Nonvested, beginning balance (in dollars per share)	$ 36.92
Granted (in dollars per share)	9.62	$ 15.39	$ 36.92
Vested (in dollars per share)	41.27
Forfeited (in dollars per share)	24.38
Nonvested, ending balance (in dollars per share)	9.16	$ 36.92
Expirations, fair value (in dollars per share)	$ 0