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Organization of the Parent Company and The Operating Partnership Organization of the Parent Company and The Operating Partnership (Details) | Mar. 31, 2013 acre
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Organization of The Parent Company and The Operating Partnership [Line Items] |
Ownership in the Operating Partnership | 98.70%
Area Owned By Real Estate Venture Of Undeveloped Parcels Of Land | 24
Parent Company [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Net rentable square feet | 24,300,000
Area Owned By Real Estate Venture Of Undeveloped Parcels Of Land | 431
Area Of Additional Undeveloped Parcels Of Land With Option to Purchase | 51
Total potential development capacity | 6,100,000
Unconsolidated Real Estate Ventures [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Net rentable square feet | 6,400,000
Number Of Unconsolidated Real Estate Ventures | 19
Wholly-owned Management Company Subsidiaries [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Net rentable square feet | 31,100,000
Third Parties and Real Estate Ventures [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Net rentable square feet | 6,800,000
Total Properties [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Number of properties with ownership interest | 214
Office Properties [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Number of properties with ownership interest | 185
Industrial Facilities [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Number of properties with ownership interest | 19
Mixed Use Properties [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Number of properties with ownership interest | 5
Development Property [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Number of properties with ownership interest | 1
Redevelopment Property [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Number of properties with ownership interest | 2
Re-entitlement Property [Member] |
Organization of The Parent Company and The Operating Partnership [Line Items] |
Number of properties with ownership interest | 2

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- Definition Area Of Additional Undeveloped Parcels Of Land With Option to Purchase + References No definition available. + Details
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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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- Definition Number of unconsolidated real estate ventures. + References No definition available. + Details
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- Details
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- Definition The amount of development that can be supported by undeveloped land + References No definition available. + Details
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- Definition Area of a real estate property. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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Data Type: | num:percentItemType
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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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