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Data Type:	xbrli:stringItemType
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Period Type:	duration

Number of common shares outstanding.

No definition available.

Name:	WSCRF_NumberOfCommonSharesOutstanding
Namespace Prefix:	WSCRF_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Percentage of lender fee.

No definition available.

Name:	WSCRF_PercentageOfLenderFee
Namespace Prefix:	WSCRF_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of outstanding common shares.

No definition available.

Name:	WSCRF_PercentageOfOutstandingCommonShares
Namespace Prefix:	WSCRF_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The amount of outstanding funds that the entity is obligated to repay.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_Borrowings
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The interest rate on borrowings. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard
-URIDate 2021-03-24

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Data Type:	num:percentItemType
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The maturity of borrowings. [Refer: Borrowings]

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Data Type:	xbrli:stringItemType
Balance Type:	na
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The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2021-01-01
-Paragraph B64
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2021-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B
-URIDate 2021-03-24

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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The cash inflow from the exercise of share purchase warrants.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_17&doctype=Standard
-URIDate 2021-03-24

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=WSCRF_NonadjustingEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
Balance Type:
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