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Commitment and Contingencies (Details Narrative) | Dec. 31, 2025 USD ($) | Dec. 31, 2025 SGD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 SGD ($)
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Commitments and Contingencies Disclosure [Abstract] |  |  |  |
Capital commitment relation to joint venture | $ 97,372 | $ 125,250 | $ 97,372 | $ 125,250

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- Definition Unrecognized commitments capital expenditures to joint venture. + References No definition available. + Details
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Namespace Prefix: | CUPR_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration