Evercore Inc. (Parent Company Only) Financial Statements - Condensed Statements of Financial Condition (Parent Company Only) - Additional Information (Details) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Condensed Balance Sheet Statements, Captions [Line Items]
Treasury Stock at Cost, Shares	26,123,438	23,017,750
Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Treasury Stock at Cost, Shares	26,123,438	23,017,750
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	65,872,014	62,119,904
Common Stock, Shares Outstanding	39,748,576	39,102,154
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	65,872,014	62,119,904
Common Stock, Shares Outstanding	39,748,576	39,102,154
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	86	82
Common Stock, Shares Outstanding	86	82
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	86	82
Common Stock, Shares Outstanding	86	82