Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 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)	40,426	40,480
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 2.36	$ 2.00
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)	40,426	40,480
Diluted weighted average of Class A Shares outstanding (in shares)	45,463	45,936
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 2.10	$ 1.76
Class A [Member]
Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 95,543	$ 80,771
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,426	40,480
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 2.36	$ 2.00
Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 95,543	$ 80,771
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	$ 95,543	$ 80,771
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,426	40,480
Assumed exchange of LP Units for Class A Shares (in shares)	1,621	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)	3,016	2,881
Shares that are contingently issuable (in shares)	400	2,575
Diluted weighted average of Class A Shares outstanding (in shares)	45,463	45,936
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 2.10	$ 1.76