Class A Ordinary Shares Class A Redeemable [Member] Class A Ordinary Shares Class A Ordinary Shares [Member] Class A Class A Ordinary Shares [Member] Class of Stock [Axis] Temporary Equity, by Class of Stock [Table] Class A ordinary shares subject to possible redemption Class A ordinary shares subject to possible redemption, 14,375,000 shares at redemption value of $10.38 and $10.29 per share at March 31, 2026 and December 31, 2025, respectively Temporary Equity, Carrying Amount, Attributable to Parent Schedule of Class A Ordinary Shares Subject to Possible Redemption [Abstract] Schedule of Class A Ordinary Shares Subject to Possible Redemption [Line Items] Temporary Equity [Line Items] Class A and Class B Non-Redeemable [Member] Class of Stock [Domain] Schedule of Company’s Assets that are Measured at Fair Value hierarchy of the Valuation Inputs Fair Value, Assets Measured on Recurring Basis [Table Text Block] Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Schedule of Basic and Diluted Net Income Per Ordinary Share [Abstract] Basic net income (loss) per ordinary share Basic net income (loss) per share Earnings Per Share, Basic, Total Basic And Diluted Net Income Per Ordinary Share [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Diluted net income (loss) per ordinary share Diluted net income (loss) per share Earnings Per Share, Diluted, Total Numerator Net Income (Loss) Attributable to Parent [Abstract] Basic allocation of net income (loss) Net Income (Loss) Available to Common Stockholders, Basic, Total Diluted allocation of net income (loss) Net Income (Loss) Available to Common Stockholders, Diluted, Total Basic And Diluted Net Income Per Ordinary Share [Table] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Diluted weighted average ordinary shares outstanding Diluted weighted average shares outstanding Weighted Average Number of Shares Outstanding, Diluted Basic weighted average ordinary shares outstanding Basic weighted average shares outstanding Weighted Average Number of Shares Outstanding, Basic Denominator Weighted Average Number of Shares Outstanding, Basic [Abstract] Significant Accounting Policies [Abstract] Schedule of Basic and Diluted Net Income Per Ordinary Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Class A Ordinary Shares Subject to Possible Redemption Temporary Equity [Table Text Block] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Schedule of the Quantitative Information Regarding Market Assumptions used in the Valuation of the Public Warrants Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Term (years) [Member] Measurement Input, Expected Term [Member] Volatility [Member] Measurement Input, Price Volatility [Member] Risk-free rate [Member] Measurement Input, Risk Free Interest Rate [Member] Market price of public shares [Member] Measurement Input, Share Price [Member] Measurement Input Type [Axis] Measurement Input Type [Domain] Fair Value measurement input Warrants and Rights Outstanding, Measurement Input Public Warrant [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Public warrant price per share Warrant exercise price Class of Warrant or Right, Exercise Price of Warrants or Rights Class of Warrant or Right [Table] Fair Value Measurements [Line Items] Schedule of Company’s Assets that are Measured at Fair Value hierarchy of the Valuation Inputs [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Aggregate outstanding founder shares Aggregate Outstanding Founders Shares The amount of aggregate outstanding founder shares. Document Information [Table] Document Period End Date Document Quarterly Report Document Transition Report Document Type Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, Postal Zip Code Entity Address, State or Province Entity Central Index Key Deferred consulting fees Increase Decrease In Deferred Consulting Fees Represents the amount of increase (decrease) in deferred consulting fees. Deferred legal fees Increase Decrease In Deferred Legal Fees Represents the amount of increase (decrease in deferred legal fees. Deferred consulting fees Deferred consulting fees Represents the amount of deferred consulting fees. Cash – End of period Cash – Beginning of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Net Change in Cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation, Total Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Accounts payable and accrued expenses Increase (Decrease) in Accrued Liabilities, Total Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Prepaid expenses Increase (Decrease) in Prepaid Expense and Other Assets Payment of operating expenses through promissory note – related party Represents the amount of payment of operating expenses through promissory note – related party. Deferred offering costs included in accrued offering costs Represents the amount of deferred offering costs included in accrued offering costs. Sale of Stock [Axis] Ordinary shares, shares issued Common Stock, Shares, Issued Ordinary shares, shares authorized Common Stock, Shares Authorized Ordinary shares, par value Common Stock, Par or Stated Value Per Share Class B Ordinary Shares Class B Ordinary Shares [Member] Class B Class B Ordinary Shares [Member] Common Class B [Member] Statement [Table] Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Ordinary shares, shares outstanding Common Stock, Shares, Outstanding Entity Registrant Name Entity Shell Company Entity Small Business Entity Tax Identification Number Local Phone Number Title of 12(b) Security Security Exchange Name Trading Symbol Class A ordinary shares, par value $0.0001 per share Units, each consisting of one Class A ordinary and three-quarters of one redeemable warrant Warrants, each whole warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share Class A and Class B Non-Redeemable Ordinary Shares Class A and Class B Non-Redeemable Ordinary Shares [Member] Class A Redeemable Ordinary Shares Class A Redeemable Ordinary Shares [Member] Aggregate shares Aggregate Shares The amount of aggregate shares. Sponsor surrendered shares Sponsor Surrendered Shares The amount of sponsor surrendered shares. Over-Allotment Option Over-Allotment Option [Member] Sale of Stock [Domain] Statement [Line Items] Statements Of Changes In Shareholders’ Deficit [Abstract] Amendment Flag City Area Code Cover [Abstract] Current Fiscal Year End Date Document Fiscal Period Focus Document Fiscal Year Focus Document Information [Line Items] Additional paid-in capital Additional Paid in Capital, Total TOTAL ASSETS Assets, Total Ordinary shares, Value Common Stock, Value, Issued Total Liabilities Liabilities, Total TOTAL LIABILITIES, CLASS A ORDINARY SHARES SUBJECT TO POSSIBLE REDEMPTION AND SHAREHOLDERS’ DEFICIT Liabilities and Equity, Total LIABILITIES AND SHAREHOLDERS’ DEFICIT Liabilities and Equity [Abstract] Total current liabilities Liabilities, Current Current liabilities Liabilities, Current [Abstract] Marketable securities held in Trust Account Marketable securities held in trust account Marketable Securities, Noncurrent Prepaid expenses Prepaid Expense, Current Preference shares, $0.0001 par value; 1,000,000 shares authorized; none issued or outstanding at March 31, 2026 and December 31, 2025 Preferred Stock, Value, Issued Accumulated deficit Retained Earnings (Accumulated Deficit), Total Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash Cash Federal depository insurance corporation coverage limit Federal Deposit Insurance Corporation Premium Expense Income tax provision Income Tax Expense (Benefit) Common stock redemption value per share Common stock redemption value Gross proceeds Proceeds from Issuance of Private Placement Gross proceeds Proceeds from Issuance Initial Public Offering Payments for underwriting expense Payments for Underwriting Expense Organization and Business Operations [Abstract] Organization and Business Operations [Abstract] Accretion for Class A ordinary shares to redemption amount Temporary Equity, Accretion to Redemption Value Emerging Growth Company Emerging Growth Company Policy Policy Text Block [Policy Text Block] The disclosure of accounting policies emerging growth company. Offering Costs Offering Costs [Policy Text Block] Disclosure of accounting policy offering costs. Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Marketable Securities Held in Trust Account Marketable Securities, Policy [Policy Text Block] Other offering costs Amount of other offering costs. Percentage of fair market value The percentage of fair market value. Post-Business Combination [Member] Related Party Transactions [Abstract] SHAREHOLDERS’ DEFICIT Equity [Text Block] Affirmative vote percentage Affirmative vote percentage. Common stock issued and outstanding percentage Common stock issued and outstanding percentage. Founder Shares [Member] Founder Shares One [Member] Founder shares are no longer subject to forfeiture Number of founder shares no longer subject to forfeiture. Loss Contingencies [Table] Private Placement [Line Items] Subsidiary, Sale of Stock [Line Items] PRIVATE PLACEMENT Private Placement [Text Block] Disclosure of private placement. Private Placement [Abstract] Warrants and Rights Outstanding, Term Warrant [Member] Incurred and paid fees Service fee Business Combination [Domain] Business Combination [Axis] Additional units Units Issued during Period Shares New Issues Number of units issued during period shares new issues. Commencing at least after the initial business combination Threshold period after business combination in which specified trading days with in any specified trading day period commences. Surrendered shares Stock issued during period surrendered shares Number of shares stock issued during period surrendered shares. Sponsor [Member] Sponser [Member] Threshold period Restrictions on transfer period of time after business combination completion. Promissory Note [Member] Deferred legal fees Deferred legal fees Represents the amount of deferred legal fees. Related Party Transaction [Axis] Related Party Transaction [Domain] Shareholder’s Deficit (Table) Stock, Class of Stock [Table] Underwriting discount per share Underwriting Discount Per Share Number of per share of underwriting discount. Underwriting discount Underwriting Discount Represent the amount underwriting discount. Underwriting Agreement [Member] Underwriters payable per unit Underwriters payable per unit. Over allotment period Underwriters Over-allotment Option Period Underwriters Overallotment Option Period. Underwriter [Member] Commencement of sales of the proposed public offering Subject to a Lock up for Period Commencement Sales Proposed Public Offering Number of days subject to a lock up for period commencement sales proposed public offerings. Deferred under writing commissions payable The amount of deferred under writing commissions payable. COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Prior written notice of redemption Class Of Warrant Or Right Minimum Threshold Written Notice Period For Redemption Of Warrants Class Of Warrant Or Right Minimum Threshold Written Notice Period For Redemption Of Warrants Trading day period commencing Class Of Warrant Or Right Redemption Of Warrants Or Rights Threshold Consecutive Trading Days Class Of Warrant Or Right Redemption Of Warrants Or Rights Threshold Consecutive Trading Days Transaction costs Represents the amount of transaction costs incurred. Restricted investment term Restricted investment term Underwriting fees Cash payment for the underwriting fees. SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] ORGANIZATION AND BUSINESS OPERATIONS Nature of Operations [Text Block] Common stock subject to possible redemption Unrecognized tax benefits Unrecognized Tax Benefits, Beginning Balance Voting percentage Business Combination, Voting Equity Interest Acquired, Percentage Operating cash and cash equivalents Cash and Cash Equivalent, Total Warrant Instruments Warrant Instruments [Policy Text Block] The disclosure of accounting policies for warrant instruments. Organization and Business Operations [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] IPO [Member] Initial Public Offering [Member] Temporary equity, shares outstanding Subsequent Events [Abstract] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Initial Public Offering [Line Items] Shareholders’ Deficit [Line Items] Class of Stock [Line Items] Number of warrants, outstanding Business Combination, Series of Individually Immaterial Business Combinations [Member] Business Combination, Series of Individually Immaterial Business Combinations [Member] Share price Shares Issued, Price Per Share Shares issued new issues Balance (in Shares) Balance (in Shares) Shares outstanding Shares, Outstanding, Beginning Balance Capital contribution Stock Issued During Period, Value, New Issues Commitments and Contingencies [Abstract] Working Capital Loans [Member] Warrant per share Warrant Per Share At The Option Of The Lender Per share of warrant share at the option of the lender. Trading day period Transfer Assign Or Sell Any Shares Or Warrants After Completion Of Initial Business Combination Threshold Trading Days Number of days for trading day period. Founder Shares [Member] RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Sale of stock description Sale of Stock, Description of Transaction Business combination closing period Warrants and rights outstanding exercisable term from closing of initial public offering. Initial Public Offering [Abstract] Initial Public Offering [Abstract] SUBSEQUENT EVENTS Subsequent Events [Text Block] Schedule of Company's Performance Segment Reporting Schedule of Segment Reporting Information, by Segment [Table Text Block] Segment Reporting [Abstract] Number of operating segments INITIAL PUBLIC OFFERING Initial Public Offering [Text Block] The entire disclosure for initial public offering. Plus Plus: [Abstract] Remeasurement of carrying value to redemption value The amount of remeasurement of carrying value to redemption value. Assets: ASSETS Assets [Abstract] Marketable securities held in Trust account Asset, Held-in-Trust, Noncurrent Fair Value, by Balance Sheet Grouping [Table] Fair Value Hierarchy and NAV [Axis] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value Hierarchy and NAV [Domain] Schedule of the Quantitative Information Regarding Market Assumptions used in the Valuation of the Public Warrants [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Schedule of the Quantitative Information Regarding Market Assumptions used in the Valuation of the Public Warrants [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Schedule of the Quantitative Information Regarding Market Assumptions used in the Valuation of the Public Warrants [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Abstract] Exercise [Member] Measurement Input, Exercise Price [Member] Payment of operating costs through advances from related party Payment of Operating Cost through Advance from Related Party Represent the amount of payment of operating cost through advance from related part. Formation and general and administrative costs General and Administrative Expense, Total Income Statement [Abstract] Income earned on marketable securities held in Trust Account Interest earned on marketable securities held in Trust Account Interest earned on marketable securities held in Trust Account Investment Income, Interest NET INCOME (LOSS) Net income (loss) OTHER INCOME Nonoperating Income (Expense) [Abstract] Loss from operations Operating Income (Loss), Total Total other income Other Nonoperating Income (Expense), Total Accrued offering costs Represents the amount of accrued offering costs. Deferred underwriting fee payable The amount of deferred underwriting fee payable. Accounts payable and accrued expenses Accrued Liabilities, Current, Total Adjustments to reconcile net income (loss) to net cash used in operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Total current assets Assets, Current, Total Current assets Assets, Current [Abstract] Commitments and Contingencies (Note 6) Commitments (see note 6) Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation, Total Cash Flows from Financing Activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation, Total Cash Flows from Operating Activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Payment of offering costs Payments of Stock Issuance Costs Proceeds from promissory note – related party Proceeds from Related Party Debt Statement of Cash Flows [Abstract] Total Shareholders’ Deficit Balance Balance Equity, Attributable to Parent, Total Shareholders’ Deficit Equity, Attributable to Parent [Abstract] Accretion of Class A ordinary shares to redemption value Amount of accretion of class A ordinary shares to redemption value. Statement of Financial Position [Abstract] Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Emerging Growth Company Entity Ex Transition Period Entity File Number Entity Filer Category Entity Incorporation, State or Country Code Entity Interactive Data Current Accrued for interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Business Combination Agreement [Member] Dune Acquisition Corporation II [Member] Interest to pay dissolution expenses Represent the amount of interest to pay dissolution expenses. Number of shares per unit Number Of Shares Per Unit Number of shares per unit. Organization and Business Operations (Table) Organization and Business Operations [Table] Working capital surplus The amount of working capital surplus. Aggregate purchase price Sale of Stock, Consideration Received Per Transaction Transferred interest purchase price Business Combination, Price of Acquisition, Expected Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Net Income (Loss) per Ordinary Share Earnings Per Share, Policy [Policy Text Block] Additional Paid-in Capital Additional Paid-in Capital [Member] Ordinary Shares Common Stock [Member] Equity Component [Domain] Accumulated Deficit Retained Earnings [Member] Private Placement Warrants [Member] Proposed Public Offering Member [Member] Redeemed percentage Public shares redeemed percentage Public shares redeemed percentage Redeemable Warrant [Member] Agreed purchase shares Agreed Purchase Shares The number of agreed purchase shares. After the completion of the initial business combination After the completion of the initial business combination Number of days after the completion of the initial business combination. Consummated units Issuance of class B ordinary shares to sponsor (in Shares) Stock Issued During Period, Shares, New Issues Sale of warrant Sale of Stock, Number of Shares Issued in Transaction Warrant redemption price Exercise price per share or per unit of class of warrant or right redemption price of warrants or rights. Purchased shares Number of Ordinary Shares Number of ordinary shares purchased. Number of Trading Days Number of trading days. Equity Components [Axis] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Class A Ordinary Shares Subject to Possible Redemption Shares Subject to Mandatory Redemption, Changes in Redemption Value, Policy [Policy Text Block] Segment reporting, description Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Shareholders’ Deficit [Abstract] Ordinary shares subject to forfeiture Commitments and Contingencies [Line Items] Loss Contingencies [Line Items] Effective within business days Threshold Period For Effective With in Statement After Business Combination Threshold period for effective with in statement after business combination. After closing the business combination Threshold Period For Filling Registration Statement After Business Combination Number of threshold period for filling registration statement after business combination. Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Original sponsor sold warrant Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Commencing period Transfer Assign Or Sell Any Shares Or Warrants After Completion Of Initial Business Combination Threshold Consecutive Trading Days Trading Day Commencing Period Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Sponsor [Member] Working capital loans Debt Instrument, Face Amount Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Axis] Related Party Transactions [Line Items] Related Party Transaction [Line Items] Payments for rent Related Party Transaction, Amounts of Transaction Related Party [Member] Borrowed amount Notes Payable, Total Principal amount Loans Payable Debt Instrument, Name [Domain] Purchase an aggregate private placement warrants Class of Warrant or Right, Number of Securities Called by Warrants or Rights Private Placement Warrant [Member] SEGMENT REPORTING Segment Reporting Disclosure [Text Block] Common stock, voting rights Debt Instrument [Axis] Related Party Transaction [Table] Chief Executive Officer