EQUITY - Changes in Common Stock (Details) - shares	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Changes in Common Stock [Roll Forward]
Beginning common shares outstanding (in shares)	105,169,515	104,783,179
Grants (in shares)	676,171	537,734
Common Unit redemptions (in shares)	34,500	46,076
Performance share and other forfeitures (in shares)	(212,643)	(167,757)
Shares retained for employee tax withholding requirements (in shares)	(65,345)	(74,340)
Ending common shares outstanding (in shares)	105,696,008	105,165,347
Annual grants to independent directors
Changes in Common Stock [Roll Forward]
Grants (in shares)	93,810	40,455