Income Taxes - Additional Information (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Taxes Payable	$ 16,494	$ 27,321
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Provisional Income Tax Expense (Benefit)	$ 143,261
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Percent	27.10%
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount	$ 24,003
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Percent	5.50%
Increase (Decrease) In Net Deferred Tax Assets	$ (106,530)
Adjustments to Additional Paid-In-Capital	$ 44,729	16,242
Tax Savings Distribution Ratio To Unit Holders (as a percent)	85.00%
Retained Ratio Of Tax Savings (as a percent)	15.00%
Deferred Tax Assets	$ 198,894	305,424
Amounts Due Pursuant to Tax Receivable Agreements	90,375	174,109
Increase (Decrease) In Deferred Tax Assets Associated With Changes In Unrealized Gain Loss On Marketable Securities In Accumulated Other Comprehensive Income Loss	(207)	688
Increase (Decrease) In Deferred Tax Assets Associated With Changes In Foreign Currency Translation Adjustment Gain Loss In Accumulated Other Comprehensive Income Loss	(4,046)	$ 9,347
Deferred Tax Assets, Valuation Allowance, Noncurrent	1,510
Tax Credit Carryforward, Amount	5,054
Evercore LP [Member]
Income Taxes [Line Items]
Increase (Decrease) In Deferred Tax Assets Associated With Amortization of Tangible and Intangible Assets	(15,082)
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense	88,776
G5 [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance, Noncurrent	$ 4,896
Class A and E LP Units [Member]
Income Taxes [Line Items]
LP Units Exchanged By Employees and Purchased by Company (in units)	1,218
Adjustments to Additional Paid-In-Capital	$ 27,765
Class A LP Units [Member]
Income Taxes [Line Items]
Adjustments to Additional Paid-In-Capital	$ 1,194
LP Units Exchanged by Employees Which Triggered Additional Liability Under Tax Receivable Agreement (in units)	214
Deferred Tax Assets	$ 7,961
Amounts Due Pursuant to Tax Receivable Agreements	$ 6,767