Segmented Information (Details Narrative)	12 Months Ended
Dec. 31, 2019 Segment
Disclosure of geographical areas [abstract]
Number of reportable operating segments	1
Number of geographic segments	3

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	WSCRF_NumberOfReportableSegment
Namespace Prefix:	WSCRF_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration