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Financial Instruments Owned and Pledged as Collateral at Fair Value, Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2013
Banking and Thrift [Abstract] |
Securities average estimated maturity period (in years) | 1 year 8 months 12 days

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- Definition Securities average estimated maturity period. + References No definition available. + Details
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Namespace Prefix: | evr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration