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, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues
Other Revenue, Including Interest and Investments									$ (6,309)	$ 45,454	$ 19,051
Total Revenues									2,285,319	2,028,837	2,082,476
Interest Expense									21,414	20,139	17,771
Net Revenues	$ 927,308	$ 402,515	$ 507,075	$ 427,007	$ 660,127	$ 402,198	$ 531,046	$ 415,327	2,263,905	2,008,698	2,064,705
Expenses
Total Expenses	600,593	338,829	420,346	377,704	503,404	331,854	404,212	331,517	1,737,472	1,570,987	1,522,628
Provision for Income Taxes	77,109	15,677	21,814	13,551	34,793	20,402	32,030	7,821	128,151	95,046	108,520
Net Income	$ 255,452	$ 51,120	$ 67,228	$ 38,880	$ 125,700	$ 52,504	$ 97,257	$ 78,200	412,680	353,661	442,851
Parent Company [Member]
Revenues
Other Revenue, Including Interest and Investments									18,197	12,915	9,202
Total Revenues									18,197	12,915	9,202
Interest Expense									18,197	12,915	9,202
Net Revenues									0	0	0
Expenses
Total Expenses									0	0	0
Operating Income									0	0	0
Equity in Income of Subsidiary									451,129	383,717	473,978
Provision for Income Taxes									100,555	86,281	96,738
Net Income									$ 350,574	$ 297,436	$ 377,240