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Investment in Unconsolidated Ventures (Narrative) (Details) | 3 Months Ended
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Mar. 31, 2012 Properties Room Real_Estate_Ventures Buildings sqft A
Investment in Unconsolidated Ventures (Textuals) [Abstract] |
Number of unconsolidated Real Estate Ventures | 18
Number of real estate ventures that owns 52 office buildings | 15
Number of office buildings owned by 15 Real Estate Ventures | 51
Net rentable square feet of 52 office buildings owned the 15 Real Estate Ventures | 6,500,000
Number of real estate ventures that owns undeveloped land | 2
Area of undeveloped parcels of land (in acres) owned by a Real Estate Venture | 4
Number of real estate ventures developed hotel property | 1
Number of rooms in a hotel property developed by one Real Estate Venture | 137
Minimum ownership interest in unconsolidated Real Estate Ventures | 20.00%
Maximum ownership interest in unconsolidated Real Estate Ventures | 65.00%

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- Definition Area owned by Real estate venture of undeveloped parcels of land (in acres). + References No definition available. + Details
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- Details
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- Definition Maximum Percentage of Unconsolidated Equity Method Investment Ownership. + References No definition available. + Details
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- Definition Minimum percentage of unconsolidated equity method investment ownership. + References No definition available. + Details
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- Definition Number of office buildings in Real Estate Ventures. + References No definition available. + Details
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- Definition Number of real estate ventures developed hotel property + References No definition available. + Details
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- Definition Number of real estate ventures that owns buildings. + References No definition available. + Details
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- Definition Number of real estate ventures that owns undeveloped land + References No definition available. + Details
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- Definition Number of rooms contain in one real estate venture developed as Hotel Property. + References No definition available. + Details
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- Definition Number of unconsolidated investments in Real Estate Ventures. + References No definition available. + Details
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