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Transactions with Related Parties (Details) - Affiliated Entity - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Washington Housing Initiative |  |  |
Related Party Transaction [Line Items] |  |  |
Qualified Affordable Housing Project Investments, Total Capital Commitments | $ 104.8 |  |
Qualified Affordable Housing Project Investments, Commitment | 10.2 |  |
Supervisory Services of Properties | BMS |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction amount | 5.3 | $ 5.2 |
Fees from Legacy JBG Funds and Washington Housing Initiative | Legacy JBG Funds and Washington Housing Initiative |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue from related parties | 8.0 | 8.4 |
Accounts Receivable, Related Parties | 8.3 |  | $ 6.2
Office Rent | Unconsolidated Real Estate Venture |  |  |
Related Party Transaction [Line Items] |  |  |
Expenses from related parties | $ 1.3 | $ 1.2 |

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