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Organization of the Parent Company and The Operating Partnership (Tables) | 12 Months Ended
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Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Summary of Core Portfolio of Operating Properties and Excludes Development and Redevelopment Properties Under Construction | The Company’s core portfolio of operating properties, as of December 31, 2018, excludes one development property and three redevelopment properties under construction or committed for construction (collectively, the “Core Properties”). The Properties were comprised of the following as of December 31, 2018:
|  |  | Number of Properties |  |  | Rentable Square Feet |
Office properties |  |  |  | 88 |  |  |  | 15,609,156 |
Mixed-use properties |  |  |  | 4 |  |  |  | 646,741 |
Retail property |  |  |  | 1 |  |  |  | 17,884 |
Core Properties |  |  |  | 93 |  |  |  | 16,273,781 |
Development property |  |  |  | 1 |  |  |  | 164,818 |
Redevelopment properties |  |  |  | 3 |  |  |  | 338,650 |
The Properties |  |  |  | 97 |  |  |  | 16,777,249 |

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