Supplemental Cash Flow Information (Details Narrative) - CAD ($)	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
SUPPLEMENTAL CASH FLOW INFORMATION
Amount transferred from reserve to deficit	$ 97,953	$ 199,971
Amount reserve to common share capital	242,901
Accrued exploration and evaluation expenditures	5,568	44,566
Advance to investment	$ 50,000	$ 33,735

The amount of accrued expense arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource.

No definition available.

Name:	WSCRF_AccruedExplorationAndEvaluationExpenditures
Namespace Prefix:	WSCRF_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant