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Organization of The Parent Company and The Operating Partnership - Summary of Core Portfolio of Operating Properties and Excludes Development and Redevelopment Properties Under Construction (Details) | Mar. 31, 2019 ft² property
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Real Estate Properties [Line Items] |
Number of Properties | property | 96
Rentable Square Feet | ft² | 16,922,019
Office Properties [Member] |
Real Estate Properties [Line Items] |
Number of Properties | property | 88
Rentable Square Feet | ft² | 15,719,636
Mixed-use Properties [Member] |
Real Estate Properties [Line Items] |
Number of Properties | property | 3
Rentable Square Feet | ft² | 641,741
Retail Properties [Member] |
Real Estate Properties [Line Items] |
Number of Properties | property | 1
Rentable Square Feet | ft² | 17,884
Core Properties [Member] |
Real Estate Properties [Line Items] |
Number of Properties | property | 92
Rentable Square Feet | ft² | 16,379,261
Development Projects [Member] |
Real Estate Properties [Line Items] |
Number of Properties | property | 1
Rentable Square Feet | ft² | 204,108
Redevelopment Projects [Member] |
Real Estate Properties [Line Items] |
Number of Properties | property | 3
Rentable Square Feet | ft² | 338,650

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- Definition Area of a real estate property. + References No definition available. + Details
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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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