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Summary of Significant Accounting Policies - Schedule of Gross Carrying Amount of Capitalized Internally Developed Software Costs (Details) - USD ($) | Mar. 31, 2025 | Dec. 31, 2024
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Schedule of Capitalized Software Development Costs [Abstract] |  |
Capitalized software not placed into service | $ 555,534 | $ 348,058

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- Definition Capitalized software not placed into service. + References No definition available. + Details
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Namespace Prefix: | fldd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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