Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Nov. 30, 2016	Mar. 31, 2021 USD ($) shares	Mar. 31, 2020 USD ($) shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Issued LP Units (in shares)		0
Class J LP Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Limited Partners' Capital Account, Units Outstanding		0
Class I-P and K-P Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares that are Contingently Issuable (in shares)		480,000	400,000
LP Units [Member] | Class A and E LP Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares)		4,926,000	5,338,000
Adjustment to Diluted Net Income Attributable to Class A Common Shareholders if LP Units were Dilutive | $		$ 17,012	$ 4,949
LP Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Limited Partnership Units Convertible Conversion Ratio	1	1