3.26.1 html 280 241 2 true 53 0 false 7 false false R1.htm 000 - Document - Document And Entity Information Sheet http://www.eurku.com/role/DocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 001 - Statement - Unaudited Condensed Consolidated Balance Sheets Sheet http://www.eurku.com/role/ConsolidatedBalanceSheet Unaudited Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 002 - Statement - Unaudited Condensed Consolidated Balance Sheets (Parentheticals) Sheet http://www.eurku.com/role/ConsolidatedBalanceSheet_Parentheticals Unaudited Condensed Consolidated Balance Sheets (Parentheticals) Statements 3 false false R4.htm 003 - Statement - Unaudited Condensed Consolidated Statements of Operations Sheet http://www.eurku.com/role/ConsolidatedIncomeStatement Unaudited Condensed Consolidated Statements of Operations Statements 4 false false R5.htm 004 - Statement - Unaudited Condensed Consolidated Statements of Changes in Shareholders' Equity (Deficit) Sheet http://www.eurku.com/role/ShareholdersEquityType2or3 Unaudited Condensed Consolidated Statements of Changes in Shareholders' Equity (Deficit) Statements 5 false false R6.htm 005 - Statement - Unaudited Condensed Consolidated Statements of Changes in Shareholders' Equity (Deficit) (Parentheticals) Sheet http://www.eurku.com/role/ShareholdersEquityType2or3_Parentheticals Unaudited Condensed Consolidated Statements of Changes in Shareholders' Equity (Deficit) (Parentheticals) Statements 6 false false R7.htm 006 - Statement - Unaudited Condensed Consolidated Statements of Cash Flows Sheet http://www.eurku.com/role/ConsolidatedCashFlow Unaudited Condensed Consolidated Statements of Cash Flows Statements 7 false false R8.htm 007 - Disclosure - Organization, Business Operation and Going Concern Consideration Sheet http://www.eurku.com/role/OrganizationBusinessOperationandGoingConcernConsideration Organization, Business Operation and Going Concern Consideration Notes 8 false false R9.htm 008 - Disclosure - Significant Accounting Policies Sheet http://www.eurku.com/role/SignificantAccountingPolicies Significant Accounting Policies Notes 9 false false R10.htm 009 - Disclosure - Initial Public Offering Sheet http://www.eurku.com/role/InitialPublicOffering Initial Public Offering Notes 10 false false R11.htm 010 - Disclosure - Private Placement Sheet http://www.eurku.com/role/PrivatePlacement Private Placement Notes 11 false false R12.htm 011 - Disclosure - Related Party Transactions Sheet http://www.eurku.com/role/RelatedPartyTransactions Related Party Transactions Notes 12 false false R13.htm 012 - Disclosure - Commitments and Contingencies Sheet http://www.eurku.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 13 false false R14.htm 013 - Disclosure - Shareholders??? Equity Sheet http://www.eurku.com/role/ShareholdersEquity Shareholders??? Equity Notes 14 false false R15.htm 014 - Disclosure - Fair Value Measurements Sheet http://www.eurku.com/role/FairValueMeasurements Fair Value Measurements Notes 15 false false R16.htm 015 - Disclosure - Segment Information Sheet http://www.eurku.com/role/SegmentInformation Segment Information Notes 16 false false R17.htm 016 - Disclosure - Subsequent Events Sheet http://www.eurku.com/role/SubsequentEvents Subsequent Events Notes 17 false false R18.htm 017 - Disclosure - Event (Unaudited) Subsequent to the Date of the Independent Auditor's Report Sheet http://www.eurku.com/role/EventUnauditedSubsequenttotheDateoftheIndependentAuditorsReport Event (Unaudited) Subsequent to the Date of the Independent Auditor's Report Notes 18 false false R19.htm 99554.2.3 - Disclosure - S-K 1602(c) Dilution Sheet http://xbrl.sec.gov/spac/role/sk1602c S-K 1602(c) Dilution Notes 19 false false R20.htm 99554.4 - Disclosure - S-K 1604, De-SPAC Transaction Sheet http://xbrl.sec.gov/spac/role/sk1604 S-K 1604, De-SPAC Transaction Notes 20 false false R21.htm 99554.4.3 - Disclosure - S-K 1604(c) De-SPAC Dilution Sheet http://xbrl.sec.gov/spac/role/sk1604c S-K 1604(c) De-SPAC Dilution Notes 21 false false R22.htm 99554.5 - Disclosure - S-K 1605, De-SPAC Background and Terms Sheet http://xbrl.sec.gov/spac/role/sk1605 S-K 1605, De-SPAC Background and Terms Notes 22 false false R23.htm 99554.6 - Disclosure - S-K 1606, De-SPAC Board Determination Sheet http://xbrl.sec.gov/spac/role/sk1606 S-K 1606, De-SPAC Board Determination Notes 23 false false R24.htm 996000 - Disclosure - Accounting Policies, by Policy (Policies) Sheet http://www.eurku.com/role/AccountingPoliciesByPolicy Accounting Policies, by Policy (Policies) Policies http://www.eurku.com/role/SignificantAccountingPolicies 24 false false R25.htm 996001 - Disclosure - Significant Accounting Policies (Tables) Sheet http://www.eurku.com/role/SignificantAccountingPoliciesTables Significant Accounting Policies (Tables) Tables http://www.eurku.com/role/SignificantAccountingPolicies 25 false false R26.htm 996002 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.eurku.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.eurku.com/role/FairValueMeasurements 26 false false R27.htm 996003 - Disclosure - Segment Information (Tables) Sheet http://www.eurku.com/role/SegmentInformationTables Segment Information (Tables) Tables http://www.eurku.com/role/SegmentInformation 27 false false R28.htm 996004 - Disclosure - Organization, Business Operation and Going Concern Consideration (Details) Sheet http://www.eurku.com/role/OrganizationBusinessOperationandGoingConcernConsiderationDetails Organization, Business Operation and Going Concern Consideration (Details) Details http://www.eurku.com/role/OrganizationBusinessOperationandGoingConcernConsideration 28 false false R29.htm 996005 - Disclosure - Significant Accounting Policies (Details) Sheet http://www.eurku.com/role/SignificantAccountingPoliciesDetails Significant Accounting Policies (Details) Details http://www.eurku.com/role/SignificantAccountingPoliciesTables 29 false false R30.htm 996006 - Disclosure - Significant Accounting Policies - Schedule of Class A Ordinary Shares Subject to Possible Redemption (Details) Sheet http://www.eurku.com/role/ScheduleofClassAOrdinarySharesSubjecttoPossibleRedemptionTable Significant Accounting Policies - Schedule of Class A Ordinary Shares Subject to Possible Redemption (Details) Details 30 false false R31.htm 996007 - Disclosure - Significant Accounting Policies - Schedule of Net Income (Loss) Per Share (Details) Sheet http://www.eurku.com/role/ScheduleofNetIncomeLossPerShareTable Significant Accounting Policies - Schedule of Net Income (Loss) Per Share (Details) Details 31 false false R32.htm 996008 - Disclosure - Significant Accounting Policies - Schedule of Basic and Diluted Net Income (Loss) Per Ordinary Share (Details) Sheet http://www.eurku.com/role/ScheduleofBasicandDilutedNetIncomeLossPerOrdinaryShareTable Significant Accounting Policies - Schedule of Basic and Diluted Net Income (Loss) Per Ordinary Share (Details) Details 32 false false R33.htm 996009 - Disclosure - Initial Public Offering (Details) Sheet http://www.eurku.com/role/InitialPublicOfferingDetails Initial Public Offering (Details) Details http://www.eurku.com/role/InitialPublicOffering 33 false false R34.htm 996010 - Disclosure - Private Placement (Details) Sheet http://www.eurku.com/role/PrivatePlacementDetails Private Placement (Details) Details http://www.eurku.com/role/PrivatePlacement 34 false false R35.htm 996011 - Disclosure - Related Party Transactions (Details) Sheet http://www.eurku.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://www.eurku.com/role/RelatedPartyTransactions 35 false false R36.htm 996012 - Disclosure - Commitments and Contingencies (Details) Sheet http://www.eurku.com/role/CommitmentsandContingenciesDetails Commitments and Contingencies (Details) Details http://www.eurku.com/role/CommitmentsandContingencies 36 false false R37.htm 996013 - Disclosure - Shareholders??? Equity (Details) Sheet http://www.eurku.com/role/ShareholdersEquityDetails Shareholders??? Equity (Details) Details http://www.eurku.com/role/ShareholdersEquity 37 false false R38.htm 996014 - Disclosure - Fair Value Measurements - Schedule of Assets Measured at Fair Value on a Recurring Basis (Details) Sheet http://www.eurku.com/role/ScheduleofAssetsMeasuredatFairValueonaRecurringBasisTable Fair Value Measurements - Schedule of Assets Measured at Fair Value on a Recurring Basis (Details) Details 38 false false R39.htm 996015 - Disclosure - Segment Information (Details) Sheet http://www.eurku.com/role/SegmentInformationDetails Segment Information (Details) Details http://www.eurku.com/role/SegmentInformationTables 39 false false R40.htm 996016 - Disclosure - Segment Information - Schedule of Performance and Making Key Decisions (Details) Sheet http://www.eurku.com/role/ScheduleofPerformanceandMakingKeyDecisionsTable Segment Information - Schedule of Performance and Making Key Decisions (Details) Details 40 false false R41.htm 996017 - Disclosure - Subsequent Events (Details) Sheet http://www.eurku.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://www.eurku.com/role/SubsequentEvents 41 false false R42.htm 996018 - Disclosure - Event (Unaudited) Subsequent to the Date of the Independent Auditor's Report (Details) Sheet http://www.eurku.com/role/EventUnauditedSubsequenttotheDateoftheIndependentAuditorsReportDetails Event (Unaudited) Subsequent to the Date of the Independent Auditor's Report (Details) Details http://www.eurku.com/role/EventUnauditedSubsequenttotheDateoftheIndependentAuditorsReport 42 false false R43.htm 996019 - Disclosure - Significant Accounting Policies - Schedule of Class A Ordinary Shares Subject to Possible Redemption (Details) Sheet http://www.eurku.com/role/ScheduleofClassAOrdinarySharesSubjecttoPossibleRedemptionTable0 Significant Accounting Policies - Schedule of Class A Ordinary Shares Subject to Possible Redemption (Details) Details 43 false false R44.htm 996020 - Disclosure - Significant Accounting Policies - Schedule of Net Income (Loss) Per Share (Details) Sheet http://www.eurku.com/role/ScheduleofNetIncomeLossPerShareTable0 Significant Accounting Policies - Schedule of Net Income (Loss) Per Share (Details) Details 44 false false R45.htm 996021 - Disclosure - Significant Accounting Policies - Schedule of Basic and Diluted Net Income (Loss) Per Ordinary Share (Details) Sheet http://www.eurku.com/role/ScheduleofBasicandDilutedNetIncomeLossPerOrdinaryShareTable0 Significant Accounting Policies - Schedule of Basic and Diluted Net Income (Loss) Per Ordinary Share (Details) Details 45 false false R46.htm 996022 - Disclosure - Segment Information - Schedule of Performance and Making Key Decisions (Details) Sheet http://www.eurku.com/role/ScheduleofPerformanceandMakingKeyDecisionsTable0 Segment Information - Schedule of Performance and Making Key Decisions (Details) Details 46 false false R47.htm 995210 - Document - Submission Sheet http://xbrl.sec.gov/ffd/role/document/submissionTable Submission Cover 47 true false R48.htm 995211 - Document - Offerings Sheet http://xbrl.sec.gov/ffd/role/document/feesOfferingTable Offerings Cover 48 false false R49.htm 995215 - Document - Fees Summary Sheet http://xbrl.sec.gov/ffd/role/document/feesSummaryTable Fees Summary Cover 49 false false All Reports Book All Reports ea0286623-s4_eureka.htm eurku-20251231.xsd eurku-20251231_cal.xml eurku-20251231_def.xml eurku-20251231_lab.xml eurku-20251231_pre.xml ea028662301ex-fee.htm ea028662301_img1.jpg ea028662301_img2.jpg ea028662301_img3.jpg ea028662301_img4.jpg ea028662301_img5.jpg ea028662301_img6.jpg ea028662301_img7.jpg ea028662301_img8.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ffd/2025 http://xbrl.sec.gov/spac/2025q3 true true