Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The cash outflow from the purchase of ownership in a partnership, the purpose of which is to construct, sell, hold or invest in real estate.

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The charge against earnings from continuing operations resulting from the aggregate write down of all assets from their carrying value to their fair value.

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This item represents the amount of gross sales proceeds received on disposal of an equity method investment.

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Gross purchase price from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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Investment In Real Estate Joint Ventures And Partnerships (Narrative) (Details) (USD $)	12 Months Ended				12 Months Ended							12 Months Ended		0 Months Ended	12 Months Ended
	Dec. 31, 2013 property	Dec. 31, 2012	Dec. 31, 2011	Dec. 23, 2013	Dec. 31, 2013 Unconsolidated Real Estate Joint Ventures [Member] property jvs	Dec. 31, 2012 Unconsolidated Real Estate Joint Ventures [Member]	Dec. 31, 2011 Unconsolidated Real Estate Joint Ventures [Member]	Dec. 31, 2013 Unconsolidated Real Estate Joint Ventures [Member] Minimum [Member]	Dec. 31, 2012 Unconsolidated Real Estate Joint Ventures [Member] Minimum [Member]	Dec. 31, 2013 Unconsolidated Real Estate Joint Ventures [Member] Maximum [Member]	Dec. 31, 2012 Unconsolidated Real Estate Joint Ventures [Member] Maximum [Member]	Dec. 31, 2013 Tenancy In Common [Member] jvs	Dec. 31, 2012 Tenancy In Common [Member]	Dec. 23, 2013 Business Combination [Member]	Dec. 31, 2013 Industrial Properties [Member]	Dec. 31, 2012 Industrial Properties [Member] property	Dec. 31, 2013 Industrial Properties [Member] Unconsolidated Real Estate Joint Ventures [Member] property	Dec. 31, 2012 Industrial Properties [Member] Unconsolidated Real Estate Joint Ventures [Member] property	Dec. 31, 2012 Shopping Center [Member] property	Dec. 31, 2013 Shopping Center [Member] Unconsolidated Real Estate Joint Ventures [Member] property
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint ventures	50.00%	75.00%		50.00%	51.00%	47.80%		20.00%	10.00%	75.00%	75.00%	10.00%	79.60%
Net basis differentials for equity method investments	$ 6,100,000	$ 1,600,000
Impairment loss	2,579,000	9,585,000	49,671,000		1,887,000	96,781,000	28,776,000
Management fees revenues, related parties	5,000,000	6,100,000	6,000,000
Number of operating properties sold	20				5											54	2	19	27	3
Gain from sale of real estate joint venture and partnership interests	33,670,000	14,203,000	0		1,900,000										11,500,000
Proceeds from sale and disposition of property	233,900,000				35,500,000													210,400,000
Gain on sale of property	120,000,000				16,000,000
Proceeds from sale of unconsolidated joint venture interest, gross	15,700,000	29,100,000
Gross payments to acquire real estate	153,600,000				41,200,000
Number of real estate joint ventures					2							2
Acquisition of unconsolidated real estate joint venture interest													29,600,000
Assumption of debt													$ 24,500,000	$ 500,000