No definition available.

Name:	acef_AllocationToSpecialLimitedPartner
Namespace Prefix:	acef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Net asset value per unit

No definition available.

Name:	acef_NetAssetValuePerUnit
Namespace Prefix:	acef_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Allocation to special limited partner.

No definition available.

Name:	acef_OperatingExpensesAllocationToSpecialLimitedPartner
Namespace Prefix:	acef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Per Unit Performance [Abstract]

No definition available.

Name:	acef_PerUnitPerformanceAbstract
Namespace Prefix:	acef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Net investment income (loss).

No definition available.

Name:	acef_RatioToAverageNetAssetsNetInvestmentIncomeLoss
Namespace Prefix:	acef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Ratio to average net assets operating expense.

No definition available.

Name:	acef_RatioToAverageNetAssetsOperatingExpense
Namespace Prefix:	acef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Ratio to average net assets operating expenses allocation to special limited partner.

No definition available.

Name:	acef_RatioToAverageNetAssetsOperatingExpensesAllocationToSpecialLimitedPartner
Namespace Prefix:	acef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Ratios to average net assets:.

No definition available.

Name:	acef_RatiosToAverageNetAssetsAbstract
Namespace Prefix:	acef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Realized and unrealized gains losses per unit.

No definition available.

Name:	acef_RealizedAndUnrealizedGainsLossesPerUnit
Namespace Prefix:	acef_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Total return.

No definition available.

Name:	acef_ReturnAfterAllocationToSpecialLimitedPartner
Namespace Prefix:	acef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Return before allocation to special limited partner.

No definition available.

Name:	acef_ReturnBeforeAllocationToSpecialLimitedPartner
Namespace Prefix:	acef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Return on capital transaction.

No definition available.

Name:	acef_ReturnOnCapitalTransactionAbstract
Namespace Prefix:	acef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Per unit of ownership amount after tax of income (loss) from continuing operations available to limited partnership (LP) unit-holder in a publicly trade limited partnership (LP) or master limited partnership (MLP).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Name:	us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipUnitBasicNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) unit-holder.

MANAGED FUTURES PREMIER ENERGY FUND L.P. 10-Q