Investment in Partially Owned Entities (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			9 Months Ended		0 Months Ended	9 Months Ended				9 Months Ended		9 Months Ended				0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Cobalt Industrial REIT II [Member]	Dec. 31, 2013 Cobalt Industrial REIT II [Member]	Sep. 12, 2014 Brixmor/IA JV, LLC [Member]	Sep. 30, 2014 Brixmor/IA JV, LLC [Member]		Dec. 31, 2013 Brixmor/IA JV, LLC [Member]		Sep. 30, 2014 IAGM Retail Fund I, LLC [Member]	Dec. 31, 2013 IAGM Retail Fund I, LLC [Member]	Sep. 30, 2014 Other Unconsolidated Entities [Member]		Dec. 31, 2013 Other Unconsolidated Entities [Member]		Feb. 21, 2014 Unconsolidated Entities [Member]	Sep. 30, 2014 Unconsolidated Entities [Member]	Dec. 31, 2013 Unconsolidated Entities [Member]
Schedule of Equity Method Investments [Line Items]
Preferred Stock, Dividend Rate, Percentage									11.00%
Equity method investment, date of notice given of intent to dissolve joint venture								Sep. 11, 2014
Date of purchase of joint venture partners' interest																			Feb. 21, 2014
Gain (loss) on investment in unconsolidated entities, net	$ 0	$ 5,471	$ (4,509)	$ 6,039
Schedule of net equity investment and share of net income or loss
Description						Industrial portfolio			Retail Shopping Centers	[1]			Retail Shopping Centers		Various real estate investments
Ownership %						36.00%							55.00%
Investment	$ 248,865		$ 248,865		$ 263,918	$ 72,463	$ 83,306		$ 60,960	[1]	$ 77,551	[1]	$ 110,102	$ 90,509	$ 5,340	[2]	$ 12,552	[2]		$ 248,865	$ 263,918

[1] The Company has a preferred membership interest and is entitled to a 11% preferred dividend in Brixmor/IA JV, LLC.

[2] On February 21, 2014, the Company purchased its partners' interest in one joint venture, which resulted in the Company obtaining control of the venture. Therefore, as of September 30, 2014, the Company consolidated this entity, recorded the assets and liabilities of the joint venture at fair value, and recorded a gain of $4,509 on the purchase of this investment