DISPOSITIONS - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($) property	Mar. 31, 2016 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of real estate	$ 5.2	$ 10.3
Triple-Net Leased Properties
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties sold | property	5
Proceeds from sale of real estate	$ 85.0
Gain on disposition	$ 43.3