Segmented information (Narrative) (Details)	Dec. 31, 2018
Statements [Line Items]
Percentage of interest acquired	100.00%
Asanko Gold Mine (AGM) [Member]
Statements [Line Items]
Percentage of interest acquired	45.00%

Percentage of interest accounted for using equity method.

No definition available.

Name:	akg_PercentageOfInterestAccountedForUsingEquityMethod
Namespace Prefix:	akg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant