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Segment Operating Results - Additional Information (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 Client | Sep. 30, 2018 Client segment
Segment Reporting [Abstract] |  |
Number of reporting segments | segment |  | 2
Number Of Clients Contributing More Than Ten Percent Revenue | Client | 0 | 0

X
- Definition Number Of Clients Contributing More Than Ten Percent Revenue + References No definition available. + Details
Name: | evr_NumberOfClientsContributingMoreThanTenPercentRevenue
Namespace Prefix: | evr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration