INCOME TAXES AND RELATED PAYMENTS - Income Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Domestic income (loss) before income taxes									$ 380,653	$ 467,264	$ 894,911
Foreign income (loss) before income taxes									16,305	22,060	10,013
Income before income taxes	$ 100,780	$ (16,100)	$ 123,380	$ 188,898	$ 125,243	$ 149,659	$ 70,624	$ 143,798	$ 396,958	$ 489,324	$ 904,924