Evercore Inc. (Parent Company Only) Financial Statements - Condensed Statements of Cash Flows (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	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 125,700	$ 52,504	$ 97,257	$ 78,200	$ 192,156	$ 59,299	$ 81,660	$ 109,736	$ 353,661	$ 442,851	$ 179,207
Adjustment to Tax Receivable Agreement									0	0	(77,535)
Increase (Decrease) in Deferred Income Taxes									(10,503)	(3,981)	148,320
Increase (Decrease) in Other Operating Assets									(58,962)	(21,830)	(10,982)
Taxes Payable									(30,221)	16,099	(10,849)
Net Cash Provided by Operating Activities									504,697	849,574	507,236
CASH FLOWS FROM INVESTING ACTIVITIES
Net Cash Provided by (Used in) Investing Activities									(373,471)	(212,566)	(54,641)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of Notes Payable									205,718	0	0
Payments of Ordinary Dividends, Common Stock									(96,803)	(77,302)	(56,521)
Net Cash Provided by (Used in) Financing Activities									(290,009)	(452,927)	(419,230)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash									(156,210)	182,711	41,748
Cash, Cash Equivalents and Restricted Cash-Beginning of Period	643,886				800,096				643,886	800,096	617,385	$ 575,637
SUPPLEMENTAL CASH FLOW DISCLOSURE
Accrued Dividends									14,642	12,288	9,815
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income									297,436	377,240	125,454
Undistributed Income Of Subsidiary									(383,717)	(473,978)	(209,905)
Adjustment to Tax Receivable Agreement									0	0	(77,535)
Increase (Decrease) in Deferred Income Taxes									(3,966)	(5,311)	153,344
Accretion On Long Term Debt									336	265	250
Increase (Decrease) in Other Operating Assets									(18,704)	9,689	(9,689)
Taxes Payable									(30,749)	30,749	(21,341)
Net Cash Provided by Operating Activities									(139,364)	(61,346)	(39,422)
CASH FLOWS FROM INVESTING ACTIVITIES
Investment In Subsidiary									30,449	138,648	95,943
Net Cash Provided by (Used in) Investing Activities									30,449	138,648	95,943
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of Notes Payable									205,718	0	0
Payments of Ordinary Dividends, Common Stock									(96,803)	(77,302)	(56,521)
Net Cash Provided by (Used in) Financing Activities									108,915	(77,302)	(56,521)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash									0	0	0
Cash, Cash Equivalents and Restricted Cash-Beginning of Period	$ 0				$ 0				0	0	0	$ 0
SUPPLEMENTAL CASH FLOW DISCLOSURE
Accrued Dividends									$ 14,642	$ 12,288	$ 9,815