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Taxes (Details) - Schedule of Deferred Tax Assets Valuation Allowance Movement - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Schedule of Deferred Tax Assets Valuation Allowance Movement [Abstract]
Change to tax expense in current year	$ 186,122	$ 228,862
Foreign currency translation adjustments	$ 9,893	$ (27,023)

X

- Definition

Represent the amount of change to tax expenses.

+ References

No definition available.

+ Details

Name:	gsun_ChangetotaxExpenseInCurrentYear
Namespace Prefix:	gsun_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_DeferredTaxAssetsNetOfValuationAllowanceAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-6

+ Details

Name:	us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant