Supplemental Cash Flow Information (Summary Of Non-Cash Investing And Financing Activities)(Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Noncash or Part Noncash Acquisitions [Line Items]
Accrued property construction costs	$ 4,775	$ 9,662
Increase in equity for the acquisition of noncontrolling interests in consolidated real estate joint ventures	11,015	0
Decrease in notes receivable from real estate joint ventures and partnerships in association with our contribution in an unconsolidated real estate joint venture	(6,431)	0
Property Acquisitions And Investments In Unconsolidated Real Estate Joint Ventures [Member]
Noncash or Part Noncash Acquisitions [Line Items]
Increase in property, net	0	18,698
Decrease in notes receivable from real estate joint ventures and partnerships	0	(3,636)
Decrease in real estate joint ventures and partnerships - investments	0	(50)
Increase in debt, net	0	21,396
Increase in security deposits	0	129
Sale Of Property And Property Interest [Member]
Noncash or Part Noncash Acquisitions [Line Items]
Decrease in property, net	(127,837)	0
Decrease in real estate joint ventures and partnerships - investments	(17)	0
Decrease in other, net	(34)	0
Decrease in debt, net due to debt assumption	(11,069)	0
Decrease in security deposits	(459)	0
Decrease in noncontrolling interests	$ (155,278)	$ 0

Future cash outflow to pay for construction in progress expenditures that have occurred.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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