- 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.

+ References

No definition available.

+ Details

Name:	nfgc_ExplorationAndEvaluationAssetsLineItems
Namespace Prefix:	nfgc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of net smelter return ("NSR") royalties, that can be purchased in the property.

+ References

No definition available.

+ Details

Name:	nfgc_MaximumPercentageOfNsrPurchased
Namespace Prefix:	nfgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The net profits interests paid, calculated as percentage on gross receipts less all cumulative development and operating expenses.

+ References

No definition available.

+ Details

Name:	nfgc_NetProfitsInterestPercentage
Namespace Prefix:	nfgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum payment of net smelter return royalties under the royalty asset purchase agreement.

+ References

No definition available.

+ Details

Name:	nfgc_NetSmelterReturnRoyaltiesCappedAmount
Namespace Prefix:	nfgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of consideration for purchase of net smelter royalties, under asset acquisition.

+ References

No definition available.

+ Details

Name:	nfgc_NetSmelterRoyaltyPurchasePrice
Namespace Prefix:	nfgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the number of mineral licenses.

+ References

No definition available.

+ Details

Name:	nfgc_NumberOfMineralLicenses
Namespace Prefix:	nfgc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the decreased percentage of net smelter return ("NSR") royalties, on meeting the aggregate limit.

+ References

No definition available.

+ Details

Name:	nfgc_PercentageOfDecreasedNetSmelterReturnRoyaltiesOnMeetingAggregateLimit
Namespace Prefix:	nfgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of interest in mineral licenses.

+ References

No definition available.

+ Details

Name:	nfgc_PercentageOfInterestInMineralLicenses
Namespace Prefix:	nfgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of net smelter return ("NSR") royalties.

+ References

No definition available.

+ Details

Name:	nfgc_PercentageOfNetSmelterReturnRoyalties
Namespace Prefix:	nfgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of net smelter return royalties payable to the royalty holders upon commencement of commercial production.

+ References

No definition available.

+ Details

Name:	nfgc_PercentageOfNetSmelterReturnRoyaltiesPayableOnCommercialProduction
Namespace Prefix:	nfgc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The threshold average price of gold used to calculate the net smelter return royalties.

+ References

No definition available.

+ Details

Name:	nfgc_ThresholdAveragePriceOfGold
Namespace Prefix:	nfgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The threshold volume of gold to be sold, for a decreased NSR percentage.

+ References

No definition available.

+ Details

Name:	nfgc_ThresholdVolumeOfGoldToBeSoldForReducedNetSmelterReturnRoyalties
Namespace Prefix:	nfgc_
Data Type:	dtr-types:massItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_GeographicalAreasAxis=stpr_CA-NL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=nfgc_InominPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	nfgc_IfrsAssetAcquisitionAxis=nfgc_WhiskerValleyProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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- Details

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EXPLORATION AND EVALUATION ASSETS - Acquisition of Maritime exploration properties and mining interests (Details)	Nov. 13, 2025 CAD ($) item oz	Jul. 29, 2024	Jul. 09, 2024
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)		1.60%
Royalties payable on commercial production percentage			1.00%
Green Bay Project
EXPLORATION AND EVALUATION ASSETS
Percentage of interest in mineral licenses	100.00%
Net smelter return ("NSR") royalties (as a percent)	2.50%
Percentage of NSR purchased	1.50%
Purchase of NSR, Amount	$ 1,000,000
Green Bay Project \| Newfoundland
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	1.00%
Green Bay Project \| Sprucy Pond Property
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	1.00%
Percentage of NSR purchased	50.00%
Purchase of NSR, Amount	$ 500,000
Green Bay Project \| Inomin property
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	1.00%
Percentage of NSR purchased	100.00%
Purchase of NSR, Amount	$ 500,000
Whisker Valley project
EXPLORATION AND EVALUATION ASSETS
Percentage of interest in mineral licenses	100.00%
Whisker Valley project \| Whisker Valley project
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	2.50%
Percentage of NSR purchased	1.00%
Purchase of NSR, Amount	$ 1,000,000
Whisker Valley project \| Mineral property Whisker Valley property.
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	1.00%
Percentage of NSR purchased	50.00%
Purchase of NSR, Amount	$ 500,000
Whisker Valley project \| Strugglers Pond and El Strato properties
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	2.00%
Percentage of NSR purchased	1.00%
Purchase of NSR, Amount	$ 1,000,000
Gull Ridge project
EXPLORATION AND EVALUATION ASSETS
Percentage of interest in mineral licenses	100.00%
Point Rousse project
EXPLORATION AND EVALUATION ASSETS
Percentage of interest in mineral licenses	100.00%
Payment of interest on net profits	7.50%
Point Rousse project \| Stog'er Tight property
EXPLORATION AND EVALUATION ASSETS
Royalties payable on commercial production percentage	3.00%
Point Rousse project \| Argyle property
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	3.00%
Capped amount of NSR	$ 3,000,000
Number of Mineral Licenses \| item	4
Decreasing to the aggregate limit (in percent)	1.00%
Volume of gold, decreasing aggregate limit \| oz	200,000
Point Rousse project \| Argyle property \| Average price of gold less than USD 2000
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	3.00%
Average price of gold	$ 2,000
Point Rousse project \| Argyle property \| Average price of gold exceeds USD 2000
EXPLORATION AND EVALUATION ASSETS
Net smelter return ("NSR") royalties (as a percent)	4.00%
Average price of gold	$ 2,000