SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
Dec. 31, 2016
Additional period thereafter related to gains and losses deferred in AOCI	2 months

The additional period thereafter related to gains and losses deferred and to be remained in AOCI.

No definition available.

Name:	eep_DerivativeInstrumentAdditionalPeriodThereafterRelatingtOFairValueChangesDeferredInAoci
Namespace Prefix:	eep_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration