DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Derivative [Line Items]
Gain (loss) on derivative contracts, net	$ (152,061)	$ (49,624)	$ 287,800	$ (226,653)
Gain (loss) on investments and sale of affiliate interests, net	197,594	98,794	(257,302)	353,519
Loss on interest rate swap contracts, net	(33,735)	(26,900)	(88,567)	(50,572)
Long-term debt	26,185,687		26,185,687		$ 24,420,285
Notes related to derivative contracts
Derivative [Line Items]
Gain (loss) on derivative contracts, net	$ (152,061)	$ (49,624)	$ 287,800	$ (226,653)