Noncontrolling Interest Changes In Noncontrolling Interest (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			$ 160,952
Net Income Attributable to Noncontrolling Interest	$ 1,762	$ (875)	(5,453)	$ (9,120)
Total comprehensive income	3,348	486	(3,186)	(8,429)
Evercore LP Units Purchased or Converted into Class A Shares			(26)
Net Reclassification to/from Redeemable Noncontrolling Interest			0	31,268
Ending balance	207,021		207,021
Noncontrolling Interest [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			160,952	60,577
Net Income Attributable to Noncontrolling Interest			5,453	9,120
Other comprehensive income (loss)			(2,267)	(691)
Total comprehensive income			3,186	8,429
Evercore LP Units Purchased or Converted into Class A Shares			(7,512)	(7,748)
Amortization and Vesting of LP Units/Interests			65,272	205
Issuance of Noncontrolling Interest for Acquisitions and Investments			0	3,510
Distributions to Noncontrolling Interests			(15,059)	(8,553)
Net Reclassification to/from Redeemable Noncontrolling Interest			0	27,477
Issuance of Noncontrolling Interest			373	2,439
Other, net			(191)	3,879
Total other items			(14,877)	25,242
Ending balance	$ 207,021	$ 90,215	$ 207,021	$ 90,215