Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 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)									40,595	39,641	39,220
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 4.07	$ 1.21	$ 1.69	$ 2.36	$ (0.50)	$ 1.18	$ 0.45	$ 2.00	$ 9.29	$ 3.16	$ 2.74
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)									40,595	39,641	39,220
Diluted weighted average of Class A Shares outstanding (in shares)									45,279	44,826	44,193
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 3.67	$ 1.08	$ 1.52	$ 2.10	$ (0.50)	$ 1.04	$ 0.41	$ 1.76	$ 8.33	$ 2.80	$ 2.43
Class A [Member]
Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders									$ 377,240	$ 125,454	$ 107,528
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)									40,595	39,641	39,220
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)									$ 9.29	$ 3.16	$ 2.74
Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders									$ 377,240	$ 125,454	$ 107,528
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									$ 377,240	$ 125,454	$ 107,528
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)									40,595	39,641	39,220
Assumed exchange of LP Units for Class A Shares (in shares)									1,378	842	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)									2,906	2,719	2,065
Shares that are contingently issuable (in shares)									400	1,624	2,908
Diluted weighted average of Class A Shares outstanding (in shares)									45,279	44,826	44,193
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)									$ 8.33	$ 2.80	$ 2.43