Investment in Unconsolidated Entities (Details 8) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue:
Minimum rent	$ 753,445	$ 722,283
Overage rent	38,957	31,674
Tenant reimbursements	340,170	325,471
Other income	48,585	46,987
Total revenue	1,216,235	1,157,022
Operating Expenses:
Property operating	99,757	94,947
Depreciation and amortization	288,106	280,493
Real estate taxes	106,888	94,305
Repairs and maintenance	29,734	29,766
Advertising and promotion	18,756	22,619
Provision for credit losses	3,847	4,423
Other	19,074	19,361
Total operating expenses	617,064	596,057
OPERATING INCOME	599,171	560,965
Interest expense	(232,173)	(254,234)
Income from Unconsolidated Entities	64,872	57,078
Equity Method Investments | Unconsolidated properties
Revenue:
Minimum rent	433,781	424,785
Overage rent	51,180	48,797
Tenant reimbursements	194,487	192,793
Other income	53,995	112,706
Total revenue	733,443	779,081
Operating Expenses:
Property operating	130,804	161,421
Depreciation and amortization	141,659	152,148
Real estate taxes	58,574	54,791
Repairs and maintenance	20,361	19,641
Advertising and promotion	16,702	18,810
Provision for credit losses	1,853	3,108
Other	44,428	52,929
Total operating expenses	414,381	462,848
OPERATING INCOME	319,062	316,233
Interest expense	(147,020)	(151,637)
Income from Continuing Operations	172,042	164,596
Income from operations of discontinued joint venture interests		2,985
Net Income	172,042	167,581
Third-Party Investors' Share of Net Income	89,114	89,313
Our Share of Net Income	82,928	78,268
Amortization of Excess Investment	(24,154)	(25,598)
Our Share of Loss from Unconsolidated Discontinued Operations		(345)
Income from Unconsolidated Entities	$ 58,774	$ 52,325