DEBT - Schedule of Maturities for Outstanding Debt (Details) $ in Thousands	Aug. 17, 2017 extension_option	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
July 1 through December 31, 2018		$ 2,156
2019		102,920
2020		204,568
2021		1,195,757
2022		999,448
Thereafter		922,595
Total Debt		3,427,444
Premium, net		15,216
Deferred financing costs, net		(18,853)
Total Debt, Net		3,423,807
Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Number of extension options | extension_option	2
Extension period	6 months
Secured Indebtedness
Debt Instrument [Line Items]
July 1 through December 31, 2018		2,156
2019		102,920
2020		4,568
2021		19,757
2022		4,285
Thereafter		122,595
Total Debt		256,281
Premium, net		0
Deferred financing costs, net		(2,714)	$ (2,800)
Total Debt, Net		253,567
Revolving Credit Facility
Debt Instrument [Line Items]
July 1 through December 31, 2018		0
2019		0
2020		0
2021		676,000
2022		0
Thereafter		0
Total Debt		676,000
Premium, net		0
Deferred financing costs, net		0
Total Debt, Net		676,000
Term Loans
Debt Instrument [Line Items]
July 1 through December 31, 2018		0
2019		0
2020		200,000
2021		0
2022		995,163
Thereafter		0
Total Debt		1,195,163
Premium, net		0
Deferred financing costs, net		(7,765)
Total Debt, Net		1,187,398
Senior Notes
Debt Instrument [Line Items]
July 1 through December 31, 2018		0
2019		0
2020		0
2021		500,000
2022		0
Thereafter		800,000
Total Debt		1,300,000
Premium, net		15,216	15,900
Deferred financing costs, net		(8,374)	$ (9,600)
Total Debt, Net		$ 1,306,842