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v3.21.1

Supplemental Cash Flow Information (Details Narrative) - CAD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2019
SUPPLEMENTAL CASH FLOW INFORMATION |  |  |  |
Amount transferred from reserve to deficit | $ 3,782,706 | $ 3,860,656 | $ 229,381 |
Accrued exploration and evaluation expenditures | 6,506 |  | 186,304 | $ 171,444
Restoration obligation | 267,000 |  |  |
Advance to investment | 24,000 |  |  |
Offset due to related party investment | 33,735 |  |  |
Trade payables | $ 7,500 |  |  |
Non-cash consideration for exploration and evaluation expenditures |  | $ 51,000 |  |
Share premium liability |  |  |  | $ 88,987
Share issuance costs, trade payables |  |  | $ 250,000 |

X
- Definition 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. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Advance to investment. + References No definition available. + Details
Name: | WSCRF_AdvanceToInvestment
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount removed from reserve and transferred to retained earnings. + References No definition available. + Details
Name: | WSCRF_AmountRemovedFromReserveTransferredToRetainedEarnings
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition Non-cash consideration for exploration and evaluation expenditures. + References No definition available. + Details
Name: | WSCRF_NoncashConsiderationForExplorationAndEvaluationExpenditures
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Offset due to related party investment. + References No definition available. + Details
Name: | WSCRF_OffsetAdditionalInvestment
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for cost incurred directly with the issuance of shares resulting from trade payables. + References No definition available. + Details
Name: | WSCRF_PaymentsOfStockIssuanceCostsInTradePayables
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Restoration obligations. + References No definition available. + Details
Name: | WSCRF_RestorationObligations
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Share premium liability. + References No definition available. + Details
Name: | WSCRF_SharePremiumLiability
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
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Data Type: | xbrli:stringItemType
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- Definition Trade payables. + References No definition available. + Details
Name: | WSCRF_TradePayables
Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration