INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax benefit (provision)	$ 18,242	$ 279,480	$ 15,887	$ 322,809
Reduction in the Transition Tax	9,200
Unrecognized tax benefits including interest and penalties	43,700		43,700		$ 39,700
Unrecognized tax benefit, if subsequently recognized would reduce income tax expense	40,600		40,600		$ 37,200
Decrease in unrecognized tax benefit, reasonably possible within twelve months	14,600		14,600
Decrease in unrecognized tax benefit, reasonably possible within twelve months which would reduce the income tax provision	14,300		14,300
Decrease in unrecognized tax benefit which would reduce the income tax provision	$ 149,000		$ 149,000