UNCONSOLIDATED REAL ESTATE AFFILIATES (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Minimum rents	$ 395,649	$ 390,402	$ 783,639	$ 787,177
Tenant recoveries	180,189	176,607	359,591	358,792
Overage rents	8,165	5,997	21,445	16,488
Management and other fees	21,652	14,235	37,823	29,587
Other	18,473	15,616	33,600	31,065
Total revenues	624,128	602,857	1,236,098	1,223,109
Expenses:
Real estate taxes	59,127	60,541	116,918	119,331
Property maintenance costs	21,500	22,357	44,575	50,819
Marketing	7,512	6,059	14,441	12,345
Other property operating costs	97,271	94,616	188,252	187,243
(Recovery of) provision for doubtful accounts	(688)	1,319	1,774	1,234
Property management and other costs	39,179	44,638	81,171	92,338
General and administrative	10,865	2,219	21,119	2,720
Depreciation and amortization	191,563	227,340	409,128	455,140
Total expenses	426,329	459,089	877,378	921,170
Operating income	197,799	143,768	358,720	301,939
Interest income	875	553	1,541	1,232
Interest expense	(188,812)	(236,476)	(404,638)	(456,097)
Provision for income taxes	(1,709)	(887)	(3,104)	(3,928)
Loss from continuing operations	(108,045)	(197,244)	(300,839)	(187,541)
Discontinued operations	1,699	(4,869)	248	(7,638)
Allocation to noncontrolling interests	(1,590)	(935)	(4,957)	(2,205)
Net loss attributable to common stockholders	(107,936)	(203,048)	(305,548)	(197,384)
Equity In (Loss) Income of Unconsolidated Real Estate Affiliates:
Net income attributable to the venture	(107,936)	(203,048)	(305,548)	(197,384)
Equity in income of Unconsolidated Real Estate Affiliates	11,843	(9,433)	17,795	(12,366)
Unconsolidated Real Estate Affiliates
Revenues:
Minimum rents	190,743	173,717	384,977	353,908
Tenant recoveries	73,364	72,699	150,292	147,034
Overage rents	4,628	3,352	10,955	7,258
Management and other fees	7,284	5,129	12,142	8,775
Other	9,568	6,083	32,387	14,450
Total revenues	285,587	260,980	590,753	531,425
Expenses:
Real estate taxes	23,645	22,628	47,931	45,843
Property maintenance costs	8,715	8,901	18,814	20,077
Marketing	3,428	3,075	6,814	6,414
Other property operating costs	31,443	40,102	78,329	78,710
(Recovery of) provision for doubtful accounts	81	1,425	768	3,849
Property management and other costs	12,035	11,207	24,725	22,545
General and administrative	9,501	10,177	20,097	14,264
Depreciation and amortization	66,650	65,511	138,787	131,254
Total expenses	155,498	163,026	336,265	322,956
Operating income	130,089	97,954	254,488	208,469
Interest income	3,490	7,912	5,714	10,333
Interest expense	(87,385)	(92,583)	(168,818)	(174,911)
Provision for income taxes	(232)	(177)	(451)	(372)
Equity in income (loss) of unconsolidated joint ventures	11,120	3,042	17,914	18,235
Loss from continuing operations	57,082	16,148	108,847	61,754
Discontinued operations	(14)	3,238	(941)	112,184
Allocation to noncontrolling interests	(839)	(574)	(732)	(2,976)
Net loss attributable to common stockholders	56,229	18,812	107,174	170,962
Equity In (Loss) Income of Unconsolidated Real Estate Affiliates:
Net income attributable to the venture	56,229	18,812	107,174	170,962
Joint venture partners' share of income	(33,860)	(10,050)	(64,954)	(91,144)
Amortization of capital or basis differences	(10,526)	(18,195)	(24,425)	(92,184)
Equity in income of Unconsolidated Real Estate Affiliates	$ 11,843	$ (9,433)	$ 17,795	$ (12,366)