LONG-TERM DEBT - Schedule of Future Maturities of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
2017	$ 343,450
2018	534,287
2019	8,304,297
2020	2,430,131
2021	4,060,007
Thereafter	4,982,780
Total	20,654,952
Original issue discount	167,000
Long-term debt fees	123,003	$ 147,983
14.0% Senior Notes Due 2021
Debt Instrument [Line Items]
High yield discount obligation catch-up payments in 2018	24,800
High yield discount obligation catch-up payments in 2019	64,700
High yield discount obligation catch-up payments in 2020	$ 68,400