Redeemable Noncontrolling Interests - Summary of the Activity of Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Temporary Equity
Balance as of the beginning of the period	$ 530,748	$ 612,758
OP Unit redemptions	(29,634)	(47,517)
LTIP Units issued in lieu of cash bonuses (1)	5,614	4,066
Net loss attributable to redeemable noncontrolling interests	(8,728)	(4,958)
Other comprehensive income (loss)	2,675	(2,990)
Distributions	(17,318)	(15,629)
Share-based compensation expense	47,222	64,611
Adjustment to redemption value	(7,854)	(79,593)
Balance as of the end of the period	522,725	530,748
JBG Smith, LP
Temporary Equity
Balance as of the beginning of the period	522,882	606,699
OP Unit redemptions	(29,634)	(47,517)
LTIP Units issued in lieu of cash bonuses (1)	5,614	4,066
Net loss attributable to redeemable noncontrolling interests	(8,671)	(4,818)
Other comprehensive income (loss)	2,675	(2,990)
Distributions	(17,170)	(15,629)
Share-based compensation expense	47,222	64,611
Adjustment to redemption value	(9,650)	(81,540)
Balance as of the end of the period	513,268	522,882
Consolidated Real Estate Venture
Temporary Equity
Balance as of the beginning of the period	7,866	6,059
Net loss attributable to redeemable noncontrolling interests	(57)	(140)
Distributions	(148)
Adjustment to redemption value	1,796	1,947
Balance as of the end of the period	$ 9,457	$ 7,866