Name:	gfuz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangeInFairValueIncludedInEarnings
Namespace Prefix:	gfuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of foreign currency translation gain (loss) recognized in income from a liability measured at fair value on a recurring basis using unobservable inputs (Level 3).

No definition available.

Name:	gfuz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityForeignCurrencyTranslationGainLossIncludedInEarnings
Namespace Prefix:	gfuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of Simple Agreements for Future Equity warrants issued as a consideration for finders' recognized in income from a liability measured at fair value on a recurring basis using unobservable inputs (Level 3).

No definition available.

Name:	gfuz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySimpleAgreementsForFutureEquityWarrantsIssuedAsConsiderationForFindersFees
Namespace Prefix:	gfuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	gfuz_SimpleAgreementsForFutureEquityLiabilitiesLineItems
Namespace Prefix:	gfuz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2G
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2G

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.