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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Other Revenue, Including Interest and Investments	[1]									$ 19,051	$ 88,828	$ 29,380
Total Revenues										2,082,476	1,724,345	1,456,790
Interest Expense										17,771	19,996	16,738
Net Revenues		$ 771,406	$ 381,259	$ 448,477	$ 463,563	$ 540,031	$ 406,601	$ 370,470	$ 387,247	2,064,705	1,704,349	1,440,052
Expenses
Total Expenses		521,200	306,719	343,695	351,014	355,885	319,531	324,204	275,918	1,522,628	1,275,538	1,178,878
Provision for Income Taxes		60,502	17,539	25,541	4,938	188,876	28,815	22,459	18,292	108,520	258,442	119,303
Net Income		$ 192,156	$ 59,299	$ 81,660	$ 109,736	$ (1,399)	$ 60,082	$ 25,877	$ 94,647	442,851	179,207	148,512
Parent Company [Member]
Revenues
Other Revenue, Including Interest and Investments										9,202	86,784	8,385
Total Revenues										9,202	86,784	8,385
Interest Expense										9,202	9,249	8,385
Net Revenues										0	77,535	0
Expenses
Total Expenses										0	0	0
Operating Income										0	77,535	0
Equity in Income of Subsidiary										473,978	287,440	209,841
Provision for Income Taxes										96,738	239,521	102,313
Net Income										$ 377,240	$ 125,454	$ 107,528

[1] Certain balances in prior periods were reclassified to conform to their current presentation. See Note 2 for further information.