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Transactions with Related Parties (Details) - Affiliated Entity - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Washington Housing Initiative
Related Party Transaction [Line Items]
Completed capital commitments	$ 114,400,000		$ 114,400,000
Commitment	11,200,000		11,200,000
Remaining unfunded commitment	6,200,000		6,200,000
Supervisory Services of Properties \| BMS
Related Party Transaction [Line Items]
Related party payments	2,000,000.0	$ 4,100,000	5,100,000	$ 8,500,000
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	4,800,000	5,800,000	10,300,000	11,600,000
Receivables	3,300,000		3,300,000		$ 3,200,000
Office Rent \| Unconsolidated Real Estate Ventures
Related Party Transaction [Line Items]
Related party payments	$ 321,000	$ 495,000	$ 708,000	$ 766,000