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INVESTMENTS - Warrants (Details)	Dec. 31, 2021 CAD ($) shares
Disclosure of unconsolidated structured entities [line items]
Warrants held, Fair Value	$ 3,363,902
Exploits Discovery Corp.
Disclosure of unconsolidated structured entities [line items]
Warrants held, Quantity | shares	6,666,667
Warrants held, Fair Value	$ 837,381
Labrador Gold Corp.
Disclosure of unconsolidated structured entities [line items]
Warrants held, Quantity | shares	6,277,778
Warrants held, Fair Value	$ 2,526,521

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- Definition

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

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No definition available.

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- Definition

Represents the quantity of warrants held.

+ References

No definition available.

+ Details

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Namespace Prefix:	nfgc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
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- Definition

Represents the fair value of warrants held.

+ References

No definition available.

+ Details

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- Details

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- Details

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