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The highest stated interest rate for loans borrowed under the Employee Loan Program.

No definition available.

Name:	ev_EmployeeLoanProgramMaximumInterestRate
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Data Type:	num:percentItemType
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Period Type:	duration

The lowest stated interest rate for loans borrowed under the Employee Loan Program.

No definition available.

Name:	ev_EmployeeLoanProgramMinimumInterestRate
Namespace Prefix:	ev_
Data Type:	num:percentItemType
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Period Type:	duration

For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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-Publisher FASB
-Name Accounting Standards Codification
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-Topic 944
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- References

No definition available.

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Amount of interest income earned from interest-bearing assets owed to the entity by related party.

No definition available.

Name:	us-gaap_InterestIncomeRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
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The reference rate for the variable rate of the loans receivable, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

No definition available.