Noncontrolling Interest Changes In Noncontrolling Interest (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			$ 160,952
Net Income Attributable to Noncontrolling Interest	$ (5,622)	$ (5,421)	(7,215)	$ (8,245)
Total comprehensive income	(5,818)	(5,858)	(6,534)	(8,915)
Evercore LP Units Purchased or Converted into Class A Shares			(26)
Net Reclassification to/from Redeemable Noncontrolling Interest			0	27,477
Ending balance	197,109		197,109
Noncontrolling Interest [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			160,952	60,577
Net Income Attributable to Noncontrolling Interest			7,215	8,245
Other comprehensive income (loss)			(681)	670
Total comprehensive income			6,534	8,915
Evercore LP Units Purchased or Converted into Class A Shares			(3,793)	(6,637)
Amortization and Vesting of LP Units/Interests			43,400	0
Distributions to Noncontrolling Interests			(10,291)	(6,414)
Net Reclassification to/from Redeemable Noncontrolling Interest			0	27,477
Issuance of Noncontrolling Interest			307	268
Other, net			0	338
Total other items			(9,984)	21,669
Ending balance	$ 197,109	$ 84,524	$ 197,109	$ 84,524