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RIGHT-OF-USE ASSETS - Lease costs (Details) - CAD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Amounts recognized in profit or loss |  |
Interest on lease liabilities | $ 6,516 | $ 3,544
Amounts recognized in the statement of cash flow |  |
Principal payments on lease liabilities | 93,984 | 32,331
Total cash outflows for leases | $ 100,499 | $ 35,875

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- Definition The cash outflow for leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_g&doctype=Standard -URIDate 2021-03-24 + Details
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Balance Type: | credit
Period Type: | duration

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- Definition The amount of interest expense on lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_b&doctype=Standard -URIDate 2021-03-24 + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Not available + References No definition available. + Details
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Namespace Prefix: | nfgc_
Data Type: | xbrli:stringItemType
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- Definition Not available + References No definition available. + Details
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Namespace Prefix: | nfgc_
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- Definition Amount of principal payments on lease liabilities during the period. + References No definition available. + Details
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Namespace Prefix: | nfgc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration