LONG-TERM DEBT / INTEREST EXPENSE - Schedule of Derivative Financial Instruments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jun. 13, 2018
Derivatives, Fair Value [Line Items]
Notional amount	$ 500,000,000
Derivative liability	4,989,000,000		$ 3,210,000,000
Cumulative unrealized loss, net of tax	(1,464,000)	$ 0
Interest Rate Swap One
Derivatives, Fair Value [Line Items]
Notional amount	$ 275,000,000			$ 275,000,000
Fixed rate (percentage)	2.82%
Derivative liability	$ 3,641,000,000		2,371,000,000
Interest Rate Swap Two
Derivatives, Fair Value [Line Items]
Notional amount	$ 225,000,000			$ 225,000,000
Fixed rate (percentage)	2.74%
Derivative liability	$ 1,348,000,000		$ 839,000,000
Interest rate swaps
Derivatives, Fair Value [Line Items]
Cumulative unrealized loss, net of tax	$ (3,400,000)