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RIGHT-OF-USE (“ROU”) ASSETS AND LEASE PAYABLE (Details Narrative) - SGD ($)	Dec. 31, 2022	Dec. 31, 2021
Short-Term Debt [Line Items]
Operating lease ROU asset	$ 1,448,000	$ 1,180,000
Secured Floating Rate Bank Loans [Member]
Short-Term Debt [Line Items]
Operating lease ROU asset	$ 676,000	$ 322,000

X

- Definition

Operating lease ROU asset.

+ References

No definition available.

+ Details

Name:	JCSE_OperatingLeaseRightOfUseAssets
Namespace Prefix:	JCSE_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

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.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=JCSE_SecuredFloatingRateBankLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: