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Noncontrolling Interest - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Oct. 31, 2014
Noncontrolling Interest [Line Items]        
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest $ (196)us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest $ 187us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest    
Other Comprehensive (Income) Loss, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest (681)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest 46us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest    
Redeemable Noncontrolling Interest 4,014us-gaap_TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest   4,014us-gaap_TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest  
Evercore LP [Member]        
Noncontrolling Interest [Line Items]        
Noncontrolling Interest (as a percent) 16.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= evr_EvercoreLPMember		      
ECB [Member]        
Noncontrolling Interest [Line Items]        
Noncontrolling Interest (as a percent) 28.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= evr_EvercoreCasadeBolsaSAdeCVMember		      
EWM [Member]        
Noncontrolling Interest [Line Items]        
Noncontrolling Interest (as a percent) 38.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= evr_EvercoreWealthManagementMember		      
Atalanta Sosnoff [Member]        
Noncontrolling Interest [Line Items]        
Noncontrolling Interest (as a percent) 34.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= evr_AtalantaSosnoffCapitalLLCMember		      
Redeemable Noncontrolling Interest $ 4,014us-gaap_TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= evr_AtalantaSosnoffCapitalLLCMember		   $ 4,014us-gaap_TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= evr_AtalantaSosnoffCapitalLLCMember		  
PCA [Member]        
Noncontrolling Interest [Line Items]        
Noncontrolling Interest (as a percent) 31.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= evr_PCAMember		      
Institutional Equities [Member]        
Noncontrolling Interest [Line Items]        
Noncontrolling Interest (as a percent)       38.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= evr_InstitutionalEquitiesMember