Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Additional Information (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2016	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares
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)		420,000	400,000	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)		5,126,000	5,254,000	5,075,000
Adjustment to Diluted Net Income Attributable to Class A Common Shareholders if LP Units were Dilutive | $		$ 45,578	$ 39,940	$ 46,060
LP Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Limited Partnership Units Convertible Conversion Ratio	1	1