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Revenue - Contract Balances (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Contract with Customer, Asset, Net, Current [Abstract]
Contract with Customer, Receivable, Net, Current	$ 184,993
Contract with Customer, Receivable, Current, Net Increase (Decrease)	47,263
Contract with Customer, Receivable, Net, Current	232,256
Contract with Customer, Asset, Gross, Current	0
Contract with Customer, Contract Asset, Current, Net Increase (Decrease)	46,960
Contract with Customer, Asset, Gross, Current	46,960
Contract with Customer, Asset, Net, Noncurrent [Abstract]
Contract with Customer, Receivable, Net, Noncurrent	34,008
Contract with Customer, Receivable, NonCurrent, Net Increase (Decrease)	19,728
Contract with Customer, Receivable, Net, Noncurrent	53,736
Contract with Customer, Asset, Gross, Noncurrent	0
Increase (Decrease) in Contract Receivables, Net	3,869
Contract with Customer, Asset, Gross, Noncurrent	3,869
Contract with Customer, Liability, Current [Abstract]
Contract with Customer, Liability, Current	3,147
Contract with Customer, Liability, Current, Net Increase (Decrease)	7,011
Contract with Customer, Liability, Current	10,158
Contract with Customer, Liability, Noncurrent [Abstract]
Contract with Customer, Liability, Noncurrent	1,834
Contract with Customer, Liability, Noncurrent, Net Increase (Decrease)	(103)
Contract with Customer, Liability, Noncurrent	$ 1,731

X

- Definition

Contract with Customer, Contract Asset, Current, Net Increase (Decrease)

+ References

No definition available.

+ Details

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

X

- Definition

Contract with Customer, Contract Asset, NonCurrent, Net Increase (Decrease)

+ References

No definition available.

+ Details

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

X

- Definition

Contract with Customer, Liability, Current [Abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	evr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Contract with Customer, Liability, Current, Net Increase (Decrease)

+ References

No definition available.

+ Details

Name:	evr_ContractwithCustomerLiabilityCurrentNetIncreaseDecrease
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Contract with Customer, Liability, Noncurrent [Abstract]

+ References

No definition available.

+ Details

Name:	evr_ContractwithCustomerLiabilityNoncurrentAbstract
Namespace Prefix:	evr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Contract with Customer, Liability, Noncurrent, Net Increase (Decrease)

+ References

No definition available.

+ Details

Name:	evr_ContractwithCustomerLiabilityNoncurrentNetIncreaseDecrease
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Contract with Customer, Receivable, Current, Net Increase (Decrease)

+ References

No definition available.

+ Details

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

X

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on passage of time, classified as current.

+ References

No definition available.

+ Details

Name:	evr_ContractwithCustomerReceivableNetCurrent
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on passage of time, classified as noncurrent.

+ References

No definition available.

+ Details

Name:	evr_ContractwithCustomerReceivableNetNoncurrent
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Contract with Customer, Receivable, NonCurrent, Net Increase (Decrease)

+ References

No definition available.

+ Details

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

X

- Definition

Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- References

No definition available.

+ Details

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

X

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130549-203045

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130549-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant