INTANGIBLES (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Intangible assets:
Accumulated amortization	$ (317,601)	$ (188,442)
Goodwill	492,523	448,393
Net intangible assets	1,174,111	1,076,978
Remaining weighted average amortization period	20 years 10 months 24 days	18 years 6 months
Intangible liabilities:
Accumulated amortization	(68,442)	(37,607)
Purchase option intangibles	36,048	112,670
Net intangible liabilities	427,601	544,832
Remaining weighted average amortization period	15 years 10 months 24 days	15 years 2 months 12 days
Above market lease intangibles
Intangible assets:
Intangibles	212,904	210,358
Remaining weighted average amortization period	9 years 8 months 12 days	10 years 1 month 6 days
In-place and other lease intangibles
Intangible assets:
Intangibles	752,596	590,500
Remaining weighted average amortization period	25 years 7 months 6 days	22 years 4 months 24 days
Other intangibles
Intangible assets:
Intangibles	33,689	16,169
Remaining weighted average amortization period	8 years 7 months 6 days	13 years 6 months
Below market lease intangibles
Intangible liabilities:
Lease intangibles	430,609	442,612
Remaining weighted average amortization period	15 years 4 months 24 days	15 years 3 months 18 days
Other lease intangibles
Intangible liabilities:
Lease intangibles	$ 29,386	$ 27,157
Remaining weighted average amortization period	30 years 9 months 18 days	7 years 10 months 24 days