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Transactions with Related Parties (Details) - Affiliated Entity - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 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	2,700,000	$ 4,900,000	7,800,000	$ 13,400,000
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	4,900,000	5,600,000	15,100,000	17,200,000
Receivables	4,100,000		4,100,000		$ 3,200,000
Office Rent \| Unconsolidated Real Estate Ventures
Related Party Transaction [Line Items]
Related party payments	$ 214,000	$ 246,000	$ 922,000	$ 1,000,000.0