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- Definition

"The number of real estate properties, by acquisition, product type, or geographic location, acquired during the reporting period.

+ Details

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- Definition

Element represents an entity's continued ownership percentage in a property or properties sold to an unconsolidated joint venture.

+ Details

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- Definition

Net proceeds from building sales to unconsolidated joint ventures

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- Definition

Square Footage Of Real Estate Properties Acquired Or Disposed.

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- Definition

The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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-Subparagraph a(3)
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- Definition

Amount of cash paid to acquire the entity.

+ References

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- Definition

The number of limited partner units issued.

+ References

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-Publisher AICPA
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- Definition

Increase in noncontrolling interest balance because of a business combination that occurred during the period.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from sale of buildings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
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- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

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Acquisitions and Dispositions (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified	6 Months Ended						6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011 Industrial Buildings [Member]	Dec. 31, 2010 Industrial Buildings [Member]	Jun. 30, 2011 Office [Member]	Dec. 31, 2010 Office [Member]	Jun. 30, 2011 Suburban Office Properties [Member]	Jun. 30, 2011 Premier Portfolio [Member]	Jun. 30, 2011 Other 2011 Acquisitions [Member]
Cash consideration paid for acquisition	$ 27,400,000
Number of real estate properties	55		12	38	4	1	13
Square footage of real estate property							2,000,000
Face value of assumed debt	124,400,000
Unit's issuance to the sellers	2.1							2.1
Unit's issuance to the seller's fair value	28,400,000							28,400,000
Weighted average remaining life of property								3.5	5.9
Proceeds from land and depreciated property sales, net	498,249,000	151,835,000
Acquisition of ownership interest	20.00%
Proceeds from Sale of Buildings	342,800,000
Net proceeds from building sales to unconsolidated joint ventures	$ 273,700,000