Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Capitalized interest	$ 45,292	$ 31,243
Vornado Realty L.P.
Capitalized interest	45,292	$ 31,243
JBGS
Cash and cash equivalents and restricted cash included in the spin-off of JBG SMITH Properties ($275,000 plus The Bartlett financing proceeds less transaction costs and other mortgage items)	(275,000)
JBGS | Vornado Realty L.P.
Cash and cash equivalents and restricted cash included in the spin-off of JBG SMITH Properties ($275,000 plus The Bartlett financing proceeds less transaction costs and other mortgage items)	$ (275,000)