INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (63,604)	$ (29,013)
Unrecognized tax benefits including interest and penalties	51,300		$ 52,300
Unrecognized tax benefit, if subsequently recognized would reduce income tax expense	48,000		$ 49,100
Decrease in unrecognized tax benefit, reasonably possible within twelve months	24,000
Decrease in unrecognized tax benefit, reasonably possible within twelve months which would reduce the income tax provision	$ 23,500