Name:	eepl_MinimumPercentageOfOutstandingUnitsTenderedToUseProratedMethodForCalculatingActualNumberOfUnitsAcquired
Namespace Prefix:	eepl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Number of limited partnership units repurchased during the period pursuant to the Company's annual Repurchase Right.

No definition available.

Name:	eepl_NumberOfUnitsRepurchased
Namespace Prefix:	eepl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Percentage of adjusted book value of the Company allocable to limited partnership units for purposes of calculating the repurchase price pursuant to the Company's annual Repurchase Right.

No definition available.

Name:	eepl_PercentageOfAdjustedBookValueOfCompanyAllocableToUnits
Namespace Prefix:	eepl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Maximum percentage of limited partnership units to be repurchased between May 1 and June 30 each year pursuant to the Company's annual Repurchase Right.

No definition available.

Name:	eepl_PercentageOfMaximumUnitsToBeRepurchased
Namespace Prefix:	eepl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Gross number of share options (or share units) granted during the period.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of options outstanding, including both vested and non-vested options.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901