SEGMENT REPORTING (Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of total segment assets to total assets
Assets	$ 8,563,522	$ 5,829,712	$ 4,321,408
Eliminations
Reconciliation of total segment assets to total assets
Assets	(186,904)	(168,390)	(180,222)
OMG
Reconciliation of total segment assets to total assets
Assets	119,702	74,383	96,637
Reconciling items
Reconciliation of total segment assets to total assets
Assets	6,164,043	3,728,003	2,676,834
Ares Management L.P and Consolidated Funds | Operating segment
Reconciliation of total segment assets to total assets
Assets	2,399,479	2,101,709	1,644,574
Consolidated Funds | Reportable legal entity
Reconciliation of total segment assets to total assets
Assets	$ 6,231,245	$ 3,822,010	$ 2,760,419