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v3.21.1

Segmented Information (Details Narrative) | 12 Months Ended
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Dec. 31, 2020 Segment
Disclosure of geographical areas [abstract] |
Number of reportable operating segments | 1
Number of geographic segments | 3

X
- Definition Represents the number of geographic segments. + References No definition available. + Details
Name: | WSCRF_NumberOfGeographicSegments
Namespace Prefix: | WSCRF_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | WSCRF_NumberOfReportableSegment
Namespace Prefix: | WSCRF_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfGeographicalAreasAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration