Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,889	40,109	40,653	40,294
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.69	$ 0.45	$ 4.05	$ 2.46
Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,889	40,109	40,653	40,294
Diluted weighted average of Class A Shares outstanding (in shares)	45,299	44,706	45,377	45,319
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.52	$ 0.41	$ 3.62	$ 2.18
Class A [Member]
Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 68,931	$ 18,184	$ 164,474	$ 98,955
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,889	40,109	40,653	40,294
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.69	$ 0.45	$ 4.05	$ 2.46
Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 68,931	$ 18,184	$ 164,474	$ 98,955
Noncontrolling interest related to the assumed exchange of LP Units for Class A Shares
Associated corporate taxes related to the assumed elimination of Noncontrolling Interest described above
Diluted net income attributable to Evercore Inc. common shareholders	$ 68,931	$ 18,184	$ 164,474	$ 98,955
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,889	40,109	40,653	40,294
Assumed exchange of LP Units for Class A Shares (in shares)	1,297	0	1,459	0
Additional shares of the Company's common stock assumed to be issued pursuant to non-vested RSUs and deferred consideration, as calculated using the Treasury Stock Method (in shares)	2,713	2,058	2,865	2,468
Shares that are contingently issuable (in shares)	400	2,539	400	2,557
Diluted weighted average of Class A Shares outstanding (in shares)	45,299	44,706	45,377	45,319
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.52	$ 0.41	$ 3.62	$ 2.18