Evercore Inc. (Parent Company Only) Financial Statements Evercore Inc. (Parent Company Only) Financial Statements - Additional Information (Details)		1 Months Ended	3 Months Ended								12 Months Ended
	Aug. 01, 2019 USD ($)	Nov. 30, 2016	Dec. 31, 2019 USD ($) $ / shares shares	Sep. 30, 2019 $ / shares	Jun. 30, 2019 $ / shares	Mar. 31, 2019 $ / shares	Dec. 31, 2018 $ / shares shares	Sep. 30, 2018 $ / shares	Jun. 30, 2018 $ / shares	Mar. 31, 2018 $ / shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Aug. 01, 2019 GBP (£)	Mar. 30, 2016 USD ($)
Condensed Financial Statements, Captions [Line Items]
Treasury Stock, Shares, Acquired (in shares) | shares											3,399,000	3,106,000
Increase in Treasury Stock											$ 283,081,000	$ 289,681,000
Dividends Declared Per Share of Class A Common Stock (in dollars per share) | $ / shares			$ 0.58	$ 0.58	$ 0.58	$ 0.50	$ 0.50	$ 0.50	$ 0.50	$ 0.40	$ 2.24	$ 1.90
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares											$ 2.24	$ 1.90
Declared and Paid Dividends, Cash											$ 89,407,000	$ 77,302,000
Contractual Obligations Related To Tax Receivable Agreements			$ 94,522,000								94,522,000
Payment To Counterparties To Tax Receivable Agreement Within One Year Or Less			9,570,000								9,570,000
Payment To Counterparties To Tax Receivable Agreement One To Three Years			19,994,000								19,994,000
Payment To Counterparties To Tax Receivable Agreement Three To Five Years			19,863,000								19,863,000
Payment To Counterparties To Tax Receivable Agreement After Five Years			45,095,000								45,095,000
Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long Term Debt Maturities Repayments Of Principal And Interest			519,690,000								519,690,000
Long Term Debt Maturities Repayments Of Principal And Interest In Next Twelve Months			$ 19,871,000								$ 19,871,000
Share Repurchase Program [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock, Shares, Acquired (in shares) | shares											2,360,000	2,021,000
Share Repurchase Program [Member] | Minimum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 73.18	$ 80.05
Share Repurchase Program [Member] | Maximum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 92.33	$ 112.30
Net Settlement of Share Based Awards [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock, Shares, Acquired (in shares) | shares											1,039,000	1,085,000
Net Settlement of Share Based Awards [Member] | Minimum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 71.11	$ 79.47
Net Settlement of Share Based Awards [Member] | Maximum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 96.22	$ 115.30
Class A [Member]
Condensed Financial Statements, Captions [Line Items]
Common Stock, Shares Authorized | shares			1,000,000,000				1,000,000,000				1,000,000,000	1,000,000,000
Common Stock, Par Value (in dollars per share) | $ / shares			$ 0.01				$ 0.01				$ 0.01	$ 0.01
Common Stock, Shares Issued | shares			68,698,675				65,872,014				68,698,675	65,872,014
Class B [Member]
Condensed Financial Statements, Captions [Line Items]
Common Stock, Shares Authorized | shares			1,000,000				1,000,000				1,000,000	1,000,000
Common Stock, Par Value (in dollars per share) | $ / shares			$ 0.01				$ 0.01				$ 0.01	$ 0.01
Common Stock, Shares Issued | shares			84				86				84	86
LP Units [Member]
Condensed Financial Statements, Captions [Line Items]
Limited Partnership Units Convertible Conversion Ratio		1									1
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends Declared Per Share of Class A Common Stock (in dollars per share) | $ / shares											$ 2.24
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares											$ 2.24
Declared and Paid Dividends, Cash											$ 89,407,000
Accrued Deferred Cash Dividends											14,642,000
Contractual Obligations Related To Tax Receivable Agreements			$ 94,522,000								94,522,000
Payment To Counterparties To Tax Receivable Agreement Within One Year Or Less			9,570,000								9,570,000
Payment To Counterparties To Tax Receivable Agreement One To Three Years			19,994,000								19,994,000
Payment To Counterparties To Tax Receivable Agreement Three To Five Years			19,863,000								19,863,000
Payment To Counterparties To Tax Receivable Agreement After Five Years			45,095,000								45,095,000
Parent Company [Member] | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross														$ 170,000,000
Long-term Debt, Weighted Average Life	12 years
Long-term Debt, Weighted Average Interest Rate, at Point in Time (as a percent)	4.26%												4.26%
Long Term Debt Maturities Repayments Of Principal And Interest			519,690,000								519,690,000
Long Term Debt Maturities Repayments Of Principal And Interest In Next Twelve Months			19,871,000								19,871,000
Long Term Debt Maturities Repayments Of Principal And Interest In One To Three Years			70,587,000								70,587,000
Long Term Debt Maturities Repayments Of Principal And Interest In Three To Five Years			93,404,000								93,404,000
Long Term Debt Maturities Repayments Of Principal And Interest After Five Years			$ 335,828,000								$ 335,828,000
Parent Company [Member] | Series A Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross														$ 38,000,000
Debt Instrument, Interest Rate, Stated Percentage														4.88%
Parent Company [Member] | Series B Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross														$ 67,000,000
Debt Instrument, Interest Rate, Stated Percentage														5.23%
Parent Company [Member] | Series C Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross														$ 48,000,000
Debt Instrument, Interest Rate, Stated Percentage														5.48%
Parent Company [Member] | Series D Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross														$ 17,000,000
Debt Instrument, Interest Rate, Stated Percentage														5.58%
Parent Company [Member] | Series E Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross	$ 75,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.34%												4.34%
Parent Company [Member] | Series F Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross	$ 60,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.44%												4.44%
Parent Company [Member] | Series G Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross	$ 40,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.54%												4.54%
Parent Company [Member] | Series H Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross | £													£ 25,000,000
Debt Instrument, Interest Rate, Stated Percentage	3.33%												3.33%
Parent Company [Member] | United States of America, Dollars | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross	$ 175,000,000
Parent Company [Member] | United Kingdom, Pounds | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term Debt, Gross | £													£ 25,000,000
Parent Company [Member] | Class A [Member]
Condensed Financial Statements, Captions [Line Items]
Common Stock, Shares Authorized | shares			1,000,000,000				1,000,000,000				1,000,000,000	1,000,000,000
Common Stock, Par Value (in dollars per share) | $ / shares			$ 0.01				$ 0.01				$ 0.01	$ 0.01
Common Stock, Shares Issued | shares			68,698,675				65,872,014				68,698,675	65,872,014
Increase in Treasury Stock											$ 283,081,000
Parent Company [Member] | Class A [Member] | Share Repurchase Program [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock, Shares, Acquired (in shares) | shares											2,360,000
Parent Company [Member] | Class A [Member] | Share Repurchase Program [Member] | Minimum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 73.18
Parent Company [Member] | Class A [Member] | Share Repurchase Program [Member] | Maximum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 92.33
Parent Company [Member] | Class A [Member] | Net Settlement of Share Based Awards [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock, Shares, Acquired (in shares) | shares											1,039,000
Parent Company [Member] | Class A [Member] | Net Settlement of Share Based Awards [Member] | Minimum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 71.11
Parent Company [Member] | Class A [Member] | Net Settlement of Share Based Awards [Member] | Maximum [Member]
Condensed Financial Statements, Captions [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share) | $ / shares											$ 96.22
Parent Company [Member] | Class B [Member]
Condensed Financial Statements, Captions [Line Items]
Common Stock, Shares Authorized | shares			1,000,000				1,000,000				1,000,000	1,000,000
Common Stock, Par Value (in dollars per share) | $ / shares			$ 0.01				$ 0.01				$ 0.01	$ 0.01
Common Stock, Shares Issued | shares			84				86				84	86
Common Stock Shares Cancelled (in shares) | shares			1								1
Parent Company [Member] | LP Units [Member]
Condensed Financial Statements, Captions [Line Items]
Limited Partnership Units Convertible Conversion Ratio											1
Dividend Paid [Member]
Condensed Financial Statements, Captions [Line Items]
Accrued Deferred Cash Dividends											$ 7,396,000
Dividend Paid [Member] | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Accrued Deferred Cash Dividends											$ 7,396,000