Noncontrolling Interest (Changes In Noncontrolling Interest) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Noncontrolling Interest [Line Items]
Beginning balance			$ 58,162
Operating income	(2,172)	466	(4,627)	(6,261)
Total comprehensive income	(3,266)	3,744	(5,660)	(4,471)
Distributions to Noncontrolling Interests			11,984	16,656
Issuance of noncontrolling interest			(296)	(1,009)
Ending balance	60,259		60,259
Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Beginning balance			58,162	66,542
Operating income			4,627	6,261
Other comprehensive income (loss)			1,033	(1,790)
Total comprehensive income			5,660	4,471
Evercore LP Units Purchased or Converted into Class A Common Stock			(7,264)	(11,990)
Amortization and Vesting of LP Units			16,019	15,808
Distributions to Noncontrolling Interests			(11,984)	(16,656)
Issuance of noncontrolling interest			296	917
Other			(630)	89
Total other items			(3,563)	(11,832)
Ending balance	$ 60,259	$ 59,181	$ 60,259	$ 59,181