Evercore Inc. (Parent Company Only) Financial Statements - Condensed Statements of Financial Condition (Parent Company Only) - Additional Information (Details) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Condensed Balance Sheet Statements, Captions [Line Items]
Treasury Stock at Cost, shares	29,522,665	26,123,438
Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Treasury Stock at Cost, shares	29,522,665	26,123,438
Class A [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares Issued	68,698,675	65,872,014
Common Stock, Shares Outstanding	39,176,010	39,748,576
Class A [Member] | Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares Issued	68,698,675	65,872,014
Common Stock, Shares Outstanding	39,176,010	39,748,576
Class B [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000	1,000,000
Common Stock, Shares Issued	84	86
Common Stock, Shares Outstanding	84	86
Class B [Member] | Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000	1,000,000
Common Stock, Shares Issued	84	86
Common Stock, Shares Outstanding	84	86