Name:	gfuz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAccruedInterest
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Amount of change in credit risk recognized in in other comprehensive income (OCI) from a liability measured at fair value on a recurring basis using unobservable inputs (Level 3).

No definition available.

Name:	gfuz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangeInCreditRiskIncludedInOtherComprehensiveIncomeLoss
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

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

No definition available.

Name:	gfuz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangeInFairValueIncludedInEarnings
Namespace Prefix:	gfuz_
Data Type:	xbrli:monetaryItemType
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Amount of foreign currency translation gain (loss) recognized in in other comprehensive income (OCI) from a liability measured at fair value on a recurring basis using unobservable inputs (Level 3).

No definition available.

Name:	gfuz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityForeignCurrencyTranslationGainLossIncludedInOtherComprehensiveIncomeLoss
Namespace Prefix:	gfuz_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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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
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of settlements 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.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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.