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Prepayments and Other Assets, Net (Details) - Schedule of Allowance for Doubtful Accounts - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Schedule Of Allowance For Doubtful Accounts [Abstract]
Beginning balance
Provision for security deposits		10,378
Write off security deposits		(10,378)
Ending balance

X

- Definition

Amount of allowance for doubtful accounts receivable provision.

+ References

No definition available.

+ Details

Name:	gsun_AllowanceForDoubtfulAccountsReceivableProvision
Namespace Prefix:	gsun_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	gsun_ScheduleOfAllowanceForDoubtfulAccountsAbstract
Namespace Prefix:	gsun_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of security deposits writeoff.

+ References

No definition available.

+ Details

Name:	gsun_WriteOffSecurityDeposits
Namespace Prefix:	gsun_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of allowance for credit loss on accounts receivable, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant