INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 95,968	$ (141,550)	$ 29,675	$ (439,945)
Change in Tax Law			49,052
Effective tax rate (percent)		42.00%		37.00%
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 2,419,000		$ 2,419,000