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v3.21.1

Share Capital, Warrants and Options - Schedule of Number and Weighted Average Remaining Contractual Life of Outstanding Warrants (Details) (Parenthetical) - Warrants [Member] | 3 Months Ended
--- | ---
Mar. 31, 2021 $ / shares
Statement Line Items [Line Items] |
Exercise price of warrant | $ 0.12
Trading days | 10 days

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- Definition Exercise price of warrant. + References No definition available. + Details
Name: | WSCRF_ExercisePriceOfWarrant
Namespace Prefix: | WSCRF_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Ifrs Statement Line Items. + References No definition available. + Details
Name: | WSCRF_IfrsStatementLineItems
Namespace Prefix: | WSCRF_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Trading days. + References No definition available. + Details
Name: | WSCRF_TradingDays
Namespace Prefix: | WSCRF_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | WSCRF_TypesOfWarrantsAxis=WSCRF_WarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |