FAIR VALUE MEASUREMENTS - SCHEDULE OF FAIR VALUES AND CARRYING VALUES OF LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of long-term debt	$ 703,390	$ 5,387
Long-term portion	3,530,813	3,254,280
Total long-term debt, carrying value	4,234,203	3,259,667
Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of long-term debt, fair value	712,863	5,387
Long-term debt, fair value	3,656,540	3,228,877
Total long-term debt, fair value	4,369,403	3,234,264
Current portion of long-term debt	703,390	5,387
Long-term portion	3,530,813	3,254,280
Total long-term debt, carrying value	$ 4,234,203	$ 3,259,667