Qualified Affordable Housing Project Investments, Total Capital Commitments

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For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Amount of commitment or contingent commitments to qualified affordable housing project investments.

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Amount of transactions with related party during the financial reporting period.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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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