Evercore Inc. (Parent Company Only) Financial Statements - Condensed Statements of Operations (Parent Company Only) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Other Revenue, Including Interest and Investments									$ 45,454	$ 19,051	$ 88,828
Total Revenues									2,028,837	2,082,476	1,724,345
Interest Expense									20,139	17,771	19,996
Net Revenues	$ 660,127	$ 402,198	$ 531,046	$ 415,327	$ 771,406	$ 381,259	$ 448,477	$ 463,563	2,008,698	2,064,705	1,704,349
Expenses
Total Expenses	503,404	331,854	404,212	331,517	521,200	306,719	343,695	351,014	1,570,987	1,522,628	1,275,538
Provision for Income Taxes	34,793	20,402	32,030	7,821	60,502	17,539	25,541	4,938	95,046	108,520	258,442
Net Income	$ 125,700	$ 52,504	$ 97,257	$ 78,200	$ 192,156	$ 59,299	$ 81,660	$ 109,736	353,661	442,851	179,207
Parent Company [Member]
Revenues
Other Revenue, Including Interest and Investments									12,915	9,202	86,784
Total Revenues									12,915	9,202	86,784
Interest Expense									12,915	9,202	9,249
Net Revenues									0	0	77,535
Expenses
Total Expenses									0	0	0
Operating Income									0	0	77,535
Equity In Income Of Subsidiary									383,717	473,978	287,440
Provision for Income Taxes									86,281	96,738	239,521
Net Income									$ 297,436	$ 377,240	$ 125,454