Real Estate Acquisitions and Discontinued Operations (Real Estate Sold During 2011 and 2010) (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | ||||
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Jun. 30, 2011
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Aug. 05, 2011
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Rental Square feet | 638,000 | ||||
Contract Purchase Price | $ 73.9 | $ 350.0 | |||
Dulles Station, Phase I [Member]
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Disposition Date | April 5, 2011 | ||||
Property Type | Office | ||||
Rental Square feet | 180,000 | ||||
Contract Purchase Price | 58.8 | ||||
Parklawn Portfolio [Member]
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Disposition Date | June 18, 2010 | [1] | |||
Property Type | Office/Industrial | [1] | |||
Rental Square feet | 229,000 | [1] | |||
Contract Purchase Price | 23.4 | [1] | |||
The Ridges [Member]
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Disposition Date | December 21, 2010 | ||||
Property Type | Office | ||||
Rental Square feet | 104,000 | ||||
Contract Purchase Price | 27.5 | ||||
Ammendale I&II and Amvax [Member]
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Disposition Date | December 22, 2010 | ||||
Property Type | Industrial | ||||
Rental Square feet | 305,000 | ||||
Contract Purchase Price | $ 23.0 | ||||
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