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Organization and Basis of Presentation - Narrative (Details) ft² in Millions, $ in Billions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 USD ($) ft² item building property | Dec. 31, 2023 building
Real estate properties |  |
Number of Real Estate Properties | 40 |
Number of key demand drivers | item | 4 |
National Landing Submarket in Northern Virginia |  |
Real estate properties |  |
Percentage of operating portfolio by the entity | 75.00% |
Future Development |  |
Real estate properties |  |
Number of Real Estate Properties | 18 |
Area of real estate property | ft² | 11.4 |
Multifamily |  |
Real estate properties |  |
Number of Real Estate Properties | 15 |
Number of Units in Real Estate Property | item | 6,318 |
Multifamily | Asset under Construction |  |
Real estate properties |  |
Number of Real Estate Properties | 2 |
Number of Units in Real Estate Property | item | 1,583 |
Commercial Real Estate |  |
Real estate properties |  |
Number of Real Estate Properties | 23 |
Area of real estate property | ft² | 7.2 |
One Commercial Building |  |
Real estate properties |  |
Number of Real Estate Properties | building | 1 | 1
Subordinated interest | 10.00% | 10.00%
Four Commercial Buildings |  |
Real estate properties |  |
Number of Real Estate Properties | building | 4 |
Subordinated interest | 33.50% |
Three Commercial Buildings |  |
Real estate properties |  |
Number of Real Estate Properties | building | 3 |
Wholly Owned Properties |  |
Real estate properties |  |
Number of properties for ground lease | 2 |
Wholly Owned Properties | Future Development |  |
Real estate properties |  |
Area of real estate property | ft² | 9.3 |
Wholly Owned Properties | Multifamily |  |
Real estate properties |  |
Number of Units in Real Estate Property | item | 6,318 |
Wholly Owned Properties | Multifamily | Asset under Construction |  |
Real estate properties |  |
Number of Units in Real Estate Property | item | 1,583 |
Wholly Owned Properties | Commercial Real Estate |  |
Real estate properties |  |
Area of real estate property | ft² | 6.9 |
Virginia Tech |  |
Real estate properties |  |
Under-construction property value developed by Virginia Tech | $ | $ 1 |
JBG Smith, LP |  |
Real estate properties |  |
Ownership interest by parent | 86.40% |
Three Commercial Buildings | Three Commercial Buildings |  |
Real estate properties |  |
Ownership interest by parent | 49.00% |

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