EQUITY - Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income	$ 3,361,251	$ 3,395,213	$ 3,488,460	$ 3,260,376	$ 3,050,778	$ 3,254,747
Total accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income	(55,641)	$ (51,373)	(12,388)	$ (10,936)	$ (1,747)	$ 12,301
Foreign currency translation loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income	(343)		(1,516)
Unrealized loss on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income	$ (55,298)		$ (10,872)