INTANGIBLES (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Intangible assets:
Accumulated amortization	$ (434,876)	$ (352,692)
Net intangible assets	1,067,074	1,152,842
Remaining weighted average amortization period	19 years 6 months	19 years 3 months 18 days
Intangible liabilities:
Accumulated amortization	(108,706)	(78,560)
Purchase option intangibles	29,294	36,048
Net intangible liabilities	380,484	416,361
Remaining weighted average amortization period	15 years	15 years 3 months 18 days
Above market lease intangibles
Intangible assets:
Intangibles	215,490	215,367
Remaining weighted average amortization period	8 years 4 months 24 days	9 years 6 months
In-place and other lease intangibles
Intangible assets:
Intangibles	796,673	766,337
Remaining weighted average amortization period	23 years 8 months 12 days	23 years 3 months 18 days
Goodwill And Other Intangibles [Member]
Intangible assets:
Intangibles	489,787	523,830
Remaining weighted average amortization period	8 years 7 months 6 days	8 years 7 months 6 days
Below Market Lease [Domain]
Intangible liabilities:
Lease intangibles	429,309	429,907
Remaining weighted average amortization period	14 years 8 months 12 days	15 years 3 months 18 days
Other lease intangibles
Intangible liabilities:
Lease intangibles	$ 30,587	$ 28,966
Remaining weighted average amortization period	24 years	15 years 9 months 18 days