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Trade Receivables, Net (Details) - Schedule of allowance for doubtful accounts	12 Months Ended
	Dec. 31, 2020 USD ($)
Schedule of allowance for doubtful accounts [Abstract]
Balance at beginning balance	$ (2,999)
Recovery of doubtful accounts	2,872
Write off
Exchange difference	127
Balance at ending balance

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- References

No definition available.

+ Details

Name:	gfai_AccountsReceivable
Namespace Prefix:	gfai_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	gfai_ProvisionOfExchangeDifference
Namespace Prefix:	gfai_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

Recovery of doubtful accounts.

+ References

No definition available.

+ Details

Name:	gfai_RecoveryOfDoubtfulAccounts
Namespace Prefix:	gfai_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	gfai_ScheduleOfAllowanceForDoubtfulAccountsAbstract
Namespace Prefix:	gfai_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The amount of expense recognised during the period in respect of bad or doubtful debts due from related parties. [Refer: Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2021-01-01
-Paragraph 18
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2021-en-r&anchor=para_18_d&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_ExpenseRecognisedDuringPeriodForBadAndDoubtfulDebtsForRelatedPartyTransaction
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration