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Trade and Other payables and Other Current Liabilities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Trade And Other Payables And Other Current Liabilities [Abstract]
Provision for penalty claims	$ 5,900	$ 14,600

X

- Definition

Amount of provision for penalty claims.

+ References

No definition available.

+ Details

Name:	gfai_ProvisionForPenaltyClaims
Namespace Prefix:	gfai_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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