STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - Stock Repurchases (Details) - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Repurchases unsettled (in shares)	(333)	(1,001)	(99)
Stock Repurchase Program, Remaining Authorized Repurchase Amount [Roll Forward]
Authorization remaining, beginning of period	$ 6,620,000	$ 34,892,000	$ 39,385,000
Authorizations	60,000,000	27,003,000	0
Repurchases	(21,136,000)	(55,275,000)	(4,493,000)
Authorization remaining, end of period	45,484,000	$ 6,620,000	$ 34,892,000
Stock Repurchase Program, Authorized Amount	$ 60,000,000