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Related Party Transactions (Details Narrative)		12 Months Ended
	Dec. 18, 2019 CAD ($) shares $ / shares	Dec. 31, 2020 CAD ($) shares	Dec. 31, 2019 CAD ($) shares	Dec. 31, 2018 CAD ($) shares	Dec. 31, 2017 CAD ($)	Dec. 18, 2018 shares
Sentient [Member]
Disclosure of transactions between related parties [line items]
Number of common shares beneficially owned		36,980,982	36,980,982	36,980,982
Number of common shares beneficially owned, percentage		33.66%	41.70%	46.93%
Contemporary Amperex Technology Limited [Member]
Disclosure of transactions between related parties [line items]
Number of common shares beneficially owned	2,944,444	22,944,444	22,944,444			19,997,628
Number of common shares beneficially owned, percentage		20.89%	25.87%			25.38%
Proceeds from related party | $	$ 530,000
Number of shares granted	1,472,222
Exercise price | $ / shares	$ 0.25
Expiration date	Dec. 18, 2021
Former Chairman as Consultant [Member]
Disclosure of transactions between related parties [line items]
Fees charged by a legal firm | $		$ 171,952	$ 370,127	$ 174,224	$ 244,285

X

- Definition

The exercise price of outstanding share option.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Expiration date.

+ References

No definition available.

+ Details

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X

- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	WSCRF_
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X

- Definition

Proceeds from related party.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of fees paid or payable to related party for professional services.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Number of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	WSCRF_
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Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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X

- Definition

The number of share options granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 45
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_ii&doctype=Standard
-URIDate 2020-01-01

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- Details

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X

- Details

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X

- Details

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