Noncontrolling Interest Changes In Noncontrolling Interest (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance				$ 60,577					$ 60,577
Net Income Attributable to Noncontrolling Interest	(11,377)	(875)	(5,421)	(2,824)	(6,474)	(4,292)	(5,585)	(2,409)	(20,497)	(18,760)	(10,590)
Total comprehensive income									(17,889)	(18,532)	(11,859)
Net Reclassification to/from Redeemable Noncontrolling Interest									27,477	0	(3,606)
Ending balance	160,952				60,577				160,952	60,577
Noncontrolling Interest [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance				60,577				62,243	60,577	62,243	58,162
Net Income Attributable to Noncontrolling Interest									20,497	18,760	10,590
Other comprehensive income (loss)									(2,608)	(228)	1,269
Total comprehensive income									17,889	18,532	11,859
Evercore LP Units Converted into Class A Shares									(11,686)	(21,414)	(9,867)
Amortization and Vesting of LP Units									3,593	20,365	21,697
Issuance of Noncontrolling Interest for Acquisitions and Investments									72,344	0	0
Distributions to Noncontrolling Interests									(10,655)	(18,950)	(16,528)
Fair value of Noncontrolling Interest in Pan									0	(309)	0
Net Reclassification to/from Redeemable Noncontrolling Interest									27,477	0	(3,606)
Other Issuance of Noncontrolling Interest									2,449	4,021	469
Purchase of Noncontrolling Interest in ETC									0	(4,529)	0
Other, net									(1,036)	0	57
Total other items									18,235	(19,149)	(19,608)
Ending balance	$ 160,952				$ 60,577				$ 160,952	$ 60,577	$ 62,243