Acquisition and Transition Costs and Special Charges (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Acquisition and Transition Costs	$ 1,673	$ 99	$ 4,890
Reversal Of Provision		733
Special Charges	25,437	8,100	41,144
Impairment of Goodwill	7,107
Special Charges [Member]
Business Acquisition [Line Items]
Charges from Restructuring of Investment			7,145
Separation Benefits and Costs for Termination of Contracts			2,151
Costs Associated with the Wind-down of US PE			3,348
Investment Management [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs	1,118	791	11
Special Charges	11,037	8,100	38,993
Investment Management [Member] \| Institutional Asset Management [Member] \| Special Charges [Member]
Business Acquisition [Line Items]
Impairment of Goodwill	7,107		28,500
Investment Banking [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs	555	(692)	4,879
Special Charges	14,400	$ 0	$ 2,151
G5 [Member] \| Investment Banking [Member] \| Special Charges [Member]
Business Acquisition [Line Items]
Equity Method Investment, Other than Temporary Impairment	14,400
Evercore Trust Company [Member]
Business Acquisition [Line Items]
Special Charges	$ 3,930

Charges from Restructuring of Investment

No definition available.

Name:	evr_ChargesfromRestructuringofInvestment
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Costs Associated with the Wind-down of US PE

+ References

No definition available.

+ Details

Name:	evr_CostsAssociatedwiththeWinddownofUSPE
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Reversal Of Provision

+ References

No definition available.

+ Details

Name:	evr_ReversalOfProvision
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Separation Benefits and Costs for Termination of Contracts

+ References

No definition available.

+ Details

Name:	evr_SeparationBenefitsandCostsforTerminationofContracts
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Special Charges incurred related to the impairment of intangible assets, Special Charges incurred in connection with exiting facilities and Special Charges related to acquisitions, including the exiting of facilities for office space, introducing fees as well as other professional fees

+ References

No definition available.

+ Details

Name:	evr_SpecialCharges
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460

+ Details

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 35
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=99375318&loc=d3e32787-111569

+ Details

Name:	us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_IncomeStatementLocationAxis=evr_SpecialChargesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=evr_InvestmentManagementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	evr_ReportingUnitAxis=evr_InstitutionalAssetManagementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=evr_InvestmentBankingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=evr_G5Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=evr_EvercoreTrustCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: