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RIGHT-OF-USE ASSETS - Reconciliation of debt arising from lease liabilities (Details) - CAD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease liabilities.
Lease liabilities beginning of year	$ 54,250	$ 53,201
Additions to lease liabilities	141,633	85,532
Principal payments on lease liabilities	(93,984)	(32,331)
Total lease liabilities	$ 100,850	$ 53,201

X

- Definition

The amount of current lease liabilities. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2021-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_CurrentLeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2021-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_LeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of additions to lease liabilities during the period.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of principal payments on lease liabilities during the period.

+ References

No definition available.

+ Details

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