Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
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)	39,045	38,912	39,873	39,259
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.18	$ 0.89	$ 3.63	$ 1.63
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)	39,045	38,912	39,873	39,259
Diluted weighted average shares of Class A Shares outstanding (in shares)	44,036	43,734	44,887	44,085
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.04	$ 0.79	$ 3.23	$ 1.45
Class A [Member]
Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 45,911	$ 34,695	$ 144,866	$ 64,100
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	39,045	38,912	39,873	39,259
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.18	$ 0.89	$ 3.63	$ 1.63
Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 45,911	$ 34,695	$ 144,866	$ 64,100
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	$ 45,911	$ 34,695	$ 144,866	$ 64,100
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	39,045	38,912	39,873	39,259
Assumed exchange of LP Units for Class A Shares (in shares)	1,420	0	473	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)	2,590	2,108	2,509	1,855
Shares that are contingently issuable (in shares)	981	2,714	2,032	2,971
Diluted weighted average shares of Class A Shares outstanding (in shares)	44,036	43,734	44,887	44,085
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.04	$ 0.79	$ 3.23	$ 1.45