Share-Based and Other Deferred Compensation - Summary of Activity Related to Share-Based Awards (Details) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) shares
2006 and 2016 Stock Incentive Plans [Member]
Number of Shares
Unvested Balance at January 1, 2017 (in shares) | shares	6,888
Granted (in shares) | shares	2,813
Modified (in shares) | shares	0
Forfeited (in shares) | shares	(154)
Vested (in shares) | shares	(2,512)
Unvested Balance at December 31, 2017 (in shares) | shares	7,035
Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2017 | $	$ 346,448
Granted | $	220,315
Modified | $	0
Forfeited | $	(10,079)
Vested | $	(119,663)
Unvested Balance at December 31, 2017 | $	$ 437,021
Class E LP Units [Member] | Evercore ISI [Member] | Acquisition Related [Member]
Number of Shares
Unvested Balance at January 1, 2017 (in shares) | shares	381
Granted (in shares) | shares	20
Modified (in shares) | shares	0
Forfeited (in shares) | shares	(14)
Vested (in shares) | shares	(387)
Unvested Balance at December 31, 2017 (in shares) | shares	0
Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2017 | $	$ 19,703
Granted | $	1,609
Modified | $	0
Forfeited | $	(723)
Vested | $	(20,589)
Unvested Balance at December 31, 2017 | $	$ 0
Class G LP Interests [Member] | Evercore ISI [Member] | Acquisition Related [Member]
Number of Shares
Unvested Balance at January 1, 2017 (in shares) | shares	711
Granted (in shares) | shares	9
Modified (in shares) | shares	0
Forfeited (in shares) | shares	(365)
Vested (in shares) | shares	(355)
Unvested Balance at December 31, 2017 (in shares) | shares	0
Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2017 | $	$ 36,817
Granted | $	660
Modified | $	0
Forfeited | $	(19,109)
Vested | $	(18,368)
Unvested Balance at December 31, 2017 | $	$ 0
Class H LP Interests [Member] | Evercore ISI [Member] | Acquisition Related [Member]
Number of Shares
Unvested Balance at January 1, 2017 (in shares) | shares	4,046
Granted (in shares) | shares	10
Modified (in shares) | shares	(4,046)
Forfeited (in shares) | shares	(10)
Vested (in shares) | shares	0
Unvested Balance at December 31, 2017 (in shares) | shares	0
Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2017 | $	$ 209,455
Granted | $	695
Modified | $	(209,639)
Forfeited | $	(511)
Vested | $	0
Unvested Balance at December 31, 2017 | $	$ 0
Class J LP Units [Member] | Evercore ISI [Member] | Acquisition Related [Member]
Number of Shares
Unvested Balance at January 1, 2017 (in shares) | shares	0
Issued in Exchange for Class H LP Interests (in shares) | shares	1,901
Granted (in shares) | shares	41
Modified (in shares) | shares	(4)
Forfeited (in shares) | shares	(41)
Vested (in shares) | shares	0
Unvested Balance at December 31, 2017 (in shares) | shares	1,897
Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2017 | $	$ 0
Issued in Exchange for Class H LP Interests | $	33,985
Granted | $	3,212
Modified | $	(91)
Forfeited | $	(834)
Vested | $	0
Unvested Balance at December 31, 2017 | $	$ 36,272