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DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Derivative [Line Items]      
Gain (loss) on derivative contracts, net $ 439,861 $ (177,029)  
Gain (loss) on investments and sale of affiliate interests, net (454,896) 254,725  
Loss on interest rate swap contracts, net (54,832) (23,672)  
Long-term debt 24,447,335   $ 24,420,285
Notes related to derivative contracts      
Derivative [Line Items]      
Gain (loss) on derivative contracts, net $ 439,861 $ (177,029)