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Organization of The Parent Company and The Operating Partnership - Summary of Core Portfolio of Operating Properties and Excludes Development, Redevelopment and Held for Sale (Details) | Mar. 31, 2021 ft² property
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Real Estate Properties [Line Items] |
Number of properties | property | 81
Net rentable area (in square feet) | ft² | 13,651,396
Office properties |
Real Estate Properties [Line Items] |
Number of properties | property | 71
Net rentable area (in square feet) | ft² | 12,006,744
Mixed-use properties |
Real Estate Properties [Line Items] |
Number of properties | property | 5
Net rentable area (in square feet) | ft² | 942,334
Core Properties |
Real Estate Properties [Line Items] |
Number of properties | property | 76
Net rentable area (in square feet) | ft² | 12,949,078
Development property |
Real Estate Properties [Line Items] |
Number of properties | property | 1
Net rentable area (in square feet) | ft² | 204,000
Redevelopment properties |
Real Estate Properties [Line Items] |
Number of properties | property | 4
Net rentable area (in square feet) | ft² | 498,318

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