INTANGIBLES (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Remaining weighted average amortization period (in years)	17 years 2 months 12 days	19 years 10 months 24 days
Goodwill and other intangibles	$ 1,230,458	$ 489,384
Accumulated amortization	(619,192)	(549,026)
Net intangible assets	1,919,317	980,009
Intangible liabilities:
Below market lease intangibles	453,750	425,092
Other lease intangibles	36,067	32,103
Accumulated amortization	(171,651)	(158,480)
Purchase option intangibles	22,644	22,900
Net intangible liabilities	$ 340,810	$ 321,615
Below market leases, remaining weighted average amortization period (in years)	14 years 7 months	14 years 8 months 12 days
Other lease intangibles, remaining weighted average amortization period (in years)	30 years 7 months	26 years 1 month 6 days
Net intangible liabilities, remaining weighted average amortization period (in years)	15 years 4 months 24 days	15 years 2 months 12 days
Above market lease intangibles
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 224,563	$ 210,573
Remaining weighted average amortization period (in years)	8 years 2 months 12 days	8 years 2 months 12 days
In-place and other lease intangibles
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 1,083,488	$ 829,078
Remaining weighted average amortization period (in years)	19 years 3 months	23 years 10 months 24 days
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Remaining weighted average amortization period (in years)	8 years 2 months 12 days	7 years 10 months 24 days