Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 30, 2016	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($) shares	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($) shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Issued LP Units (in shares)		0	0	0	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	0	0	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	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)		4,848,000	5,076,000	4,887,000	5,207,000
Adjustment to Diluted Net Income Attributable to Class A Common Shareholders if LP Units were Dilutive | $		$ 17,159	$ 7,481	$ 34,170	$ 12,430
LP Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Limited Partnership Units Convertible Conversion Ratio	1	1		1