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SCHEDULE OF INVESTMENT (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 CAD ($)
Disclosure of detailed information about investment property [abstract]
Balance, December 31, 2020	$ 48
Reallocation of advance	50
Investment	51
Share of loss of Premium Nickel	(37)
Balance, June 30, 2021	$ 112

X

- Definition

Investment.

+ References

No definition available.

+ Details

Name:	WSCRF_Investment
Namespace Prefix:	WSCRF_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Reallocation of advance.

+ References

No definition available.

+ Details

Name:	WSCRF_ReallocationOfAdvance
Namespace Prefix:	WSCRF_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Share of loss.

+ References

No definition available.

+ Details

Name:	WSCRF_ShareOfLoss
Namespace Prefix:	WSCRF_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfInvestmentPropertyAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 10
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_10&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_InvestmentsInSubsidiariesJointVenturesAndAssociates
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant