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Segment Information - Additional Information (Detail)	Dec. 31, 2017 Segments
Disclosure of operating segments [abstract]
Number of reportable segments	6

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- Definition

Number of reportable segments.

+ References

No definition available.

+ Details

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Namespace Prefix:	ego_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfOperatingSegmentsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration