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Disclosure - Note 8 - Administrative Expenses (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-8-administrative-expenses-tables Note 8 - Administrative Expenses (Tables) Tables http://www.bullish.com/20251231/role/statement-note-8-administrative-expenses 46 false false R47.htm 995591 - Disclosure - Note 9 - Other Expenses (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-9-other-expenses-tables Note 9 - Other Expenses (Tables) Tables http://www.bullish.com/20251231/role/statement-note-9-other-expenses 47 false false R48.htm 995592 - Disclosure - Note 10 - Finance Expense (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-10-finance-expense-tables Note 10 - Finance Expense (Tables) Tables http://www.bullish.com/20251231/role/statement-note-10-finance-expense 48 false false R49.htm 995593 - Disclosure - Note 11 - Income Tax (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-tables Note 11 - Income Tax (Tables) Tables http://www.bullish.com/20251231/role/statement-note-11-income-tax 49 false false R50.htm 995594 - Disclosure - Note 12 - Digital Assets Held (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-12-digital-assets-held-tables Note 12 - Digital Assets Held (Tables) Tables http://www.bullish.com/20251231/role/statement-note-12-digital-assets-held 50 false false R51.htm 995595 - Disclosure - Note 13 - Loan and Other Receivables - Digital Assets (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-13-loan-and-other-receivables-digital-assets-tables Note 13 - Loan and Other Receivables - Digital Assets (Tables) Tables http://www.bullish.com/20251231/role/statement-note-13-loan-and-other-receivables-digital-assets 51 false false R52.htm 995596 - Disclosure - Note 14 - Investments in Financial Assets (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-14-investments-in-financial-assets-tables Note 14 - Investments in Financial Assets (Tables) Tables http://www.bullish.com/20251231/role/statement-note-14-investments-in-financial-assets 52 false false R53.htm 995597 - Disclosure - Note 15 - Goodwill and Other Intangible Assets (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-15-goodwill-and-other-intangible-assets-tables Note 15 - Goodwill and Other Intangible Assets (Tables) Tables http://www.bullish.com/20251231/role/statement-note-15-goodwill-and-other-intangible-assets 53 false false R54.htm 995598 - Disclosure - Note 16 - Property and Equipment and Right-of-use Assets (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-16-property-and-equipment-and-rightofuse-assets-tables Note 16 - Property and Equipment and Right-of-use Assets (Tables) Tables http://www.bullish.com/20251231/role/statement-note-16-property-and-equipment-and-rightofuse-assets 54 false false R55.htm 995599 - Disclosure - Note 17 - Other Assets (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-17-other-assets-tables Note 17 - Other Assets (Tables) Tables http://www.bullish.com/20251231/role/statement-note-17-other-assets 55 false false R56.htm 995600 - Disclosure - Note 19 - Cash and Cash Equivalents (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-19-cash-and-cash-equivalents-tables Note 19 - Cash and Cash Equivalents (Tables) Tables http://www.bullish.com/20251231/role/statement-note-19-cash-and-cash-equivalents 56 false false R57.htm 995601 - Disclosure - Note 21 - Other Payables (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-21-other-payables-tables Note 21 - Other Payables (Tables) Tables http://www.bullish.com/20251231/role/statement-note-21-other-payables 57 false false R58.htm 995602 - Disclosure - Note 22 - Borrowings from Related Parties and Borrowings (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-22-borrowings-from-related-parties-and-borrowings-tables Note 22 - Borrowings from Related Parties and Borrowings (Tables) Tables http://www.bullish.com/20251231/role/statement-note-22-borrowings-from-related-parties-and-borrowings 58 false false R59.htm 995603 - Disclosure - Note 23 - Digital Assets Loan Payable (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-23-digital-assets-loan-payable-tables Note 23 - Digital Assets Loan Payable (Tables) Tables http://www.bullish.com/20251231/role/statement-note-23-digital-assets-loan-payable 59 false false R60.htm 995604 - Disclosure - Note 24 - Share Capital and Share Premium (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-24-share-capital-and-share-premium-tables Note 24 - Share Capital and Share Premium (Tables) Tables http://www.bullish.com/20251231/role/statement-note-24-share-capital-and-share-premium 60 false false R61.htm 995605 - Disclosure - Note 25 - Derivative Financial Instruments (Tables) Sheet http://www.bullish.com/20251231/role/statement-note-25-derivative-financial-instruments-tables Note 25 - Derivative Financial Instruments (Tables) Tables http://www.bullish.com/20251231/role/statement-note-25-derivative-financial-instruments 61 false false R62.htm 995606 - Disclosure - 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Summary of Principal Accounting Policies (Details Textual) Details 68 false false R69.htm 995613 - Disclosure - Note 4 - Digital Assets Sales - Disaggregation of Digital Assets Sales (Details) Sheet http://www.bullish.com/20251231/role/statement-note-4-digital-assets-sales-disaggregation-of-digital-assets-sales-details Note 4 - Digital Assets Sales - Disaggregation of Digital Assets Sales (Details) Details 69 false false R70.htm 995614 - Disclosure - Note 4 - Digital Assets Sales - Customer Concentrations (Details) Sheet http://www.bullish.com/20251231/role/statement-note-4-digital-assets-sales-customer-concentrations-details Note 4 - Digital Assets Sales - Customer Concentrations (Details) Details 70 false false R71.htm 995615 - Disclosure - Note 5 - Cost of Digital Assets Derecognized - Details of Cost of Digital Assets Derecognized (Details) Sheet http://www.bullish.com/20251231/role/statement-note-5-cost-of-digital-assets-derecognized-details-of-cost-of-digital-assets-derecognized-details Note 5 - Cost of Digital Assets Derecognized - Details of Cost of Digital Assets Derecognized (Details) Details 71 false false R72.htm 995616 - Disclosure - Note 6 - Other Revenues (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-6-other-revenues-details-textual Note 6 - Other Revenues (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-6-other-revenues-tables 72 false false R73.htm 995617 - Disclosure - Note 6 - Other Revenues - Details of Other Revenues (Details) Sheet http://www.bullish.com/20251231/role/statement-note-6-other-revenues-details-of-other-revenues-details Note 6 - Other Revenues - Details of Other Revenues (Details) Details 73 false false R74.htm 995618 - Disclosure - Note 7 - Change in Fair Value of Digital Assets Held, Net - Details of Change in Fair Value of Digital Assets Held, Net (Details) Sheet http://www.bullish.com/20251231/role/statement-note-7-change-in-fair-value-of-digital-assets-held-net-details-of-change-in-fair-value-of-digital-assets-held-net-details Note 7 - Change in Fair Value of Digital Assets Held, Net - Details of Change in Fair Value of Digital Assets Held, Net (Details) Details 74 false false R75.htm 995619 - Disclosure - Note 8 - Administrative Expenses - Details of Administrative Expenses (Details) Sheet http://www.bullish.com/20251231/role/statement-note-8-administrative-expenses-details-of-administrative-expenses-details Note 8 - Administrative Expenses - Details of Administrative Expenses (Details) Details 75 false false R76.htm 995620 - Disclosure - Note 9 - Other Expenses - Details of Other Expenses (Details) Sheet http://www.bullish.com/20251231/role/statement-note-9-other-expenses-details-of-other-expenses-details Note 9 - Other Expenses - Details of Other Expenses (Details) Details 76 false false R77.htm 995621 - Disclosure - Note 10 - Finance Expense (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-10-finance-expense-details-textual Note 10 - Finance Expense (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-10-finance-expense-tables 77 false false R78.htm 995622 - Disclosure - Note 10 - Finance Expense - Details of Finance Expense (Details) Sheet http://www.bullish.com/20251231/role/statement-note-10-finance-expense-details-of-finance-expense-details Note 10 - Finance Expense - Details of Finance Expense (Details) Details 78 false false R79.htm 995623 - Disclosure - Note 11 - Income Tax (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-details-textual Note 11 - Income Tax (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-11-income-tax-tables 79 false false R80.htm 995624 - Disclosure - Note 11 - Income Tax - Schedule of Income Tax Expense (Details) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-schedule-of-income-tax-expense-details Note 11 - Income Tax - Schedule of Income Tax Expense (Details) Details 80 false false R81.htm 995625 - Disclosure - Note 11 - Income Tax - Deferred Tax Assets and Liabilities (Details) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-deferred-tax-assets-and-liabilities-details Note 11 - Income Tax - Deferred Tax Assets and Liabilities (Details) Details 81 false false R82.htm 995626 - Disclosure - Note 11 - Income Tax - Reconciliation of Income Tax Expense (Benefit) and Profit (Loss) (Details) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-reconciliation-of-income-tax-expense-benefit-and-profit-loss-details Note 11 - Income Tax - Reconciliation of Income Tax Expense (Benefit) and Profit (Loss) (Details) Details 82 false false R83.htm 995627 - Disclosure - Note 11 - Income Tax - Reconciliation of Income Tax Expense (Benefit) and Profit (Loss) (Details) (Parentheticals) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-reconciliation-of-income-tax-expense-benefit-and-profit-loss-details-parentheticals Note 11 - Income Tax - Reconciliation of Income Tax Expense (Benefit) and Profit (Loss) (Details) (Parentheticals) Details 83 false false R84.htm 995628 - Disclosure - Note 11 - Income Tax - Schedule of Temporary Differences Related to Deferred Tax Assets and Deferred Tax Liabilities (Details) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-schedule-of-temporary-differences-related-to-deferred-tax-assets-and-deferred-tax-liabilities-details Note 11 - Income Tax - Schedule of Temporary Differences Related to Deferred Tax Assets and Deferred Tax Liabilities (Details) Details 84 false false R85.htm 995629 - Disclosure - Note 11 - Income Tax - Schedule of Deferred Assets and Liabilities (Details) Sheet http://www.bullish.com/20251231/role/statement-note-11-income-tax-schedule-of-deferred-assets-and-liabilities-details Note 11 - Income Tax - Schedule of Deferred Assets and Liabilities (Details) Details 85 false false R86.htm 995630 - Disclosure - Note 12 - Digital Assets Held (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-12-digital-assets-held-details-textual Note 12 - Digital Assets Held (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-12-digital-assets-held-tables 86 false false R87.htm 995631 - Disclosure - Note 12 - Digital Assets Held - Reconciliation of Digital Assets Held (Details) Sheet http://www.bullish.com/20251231/role/statement-note-12-digital-assets-held-reconciliation-of-digital-assets-held-details Note 12 - Digital Assets Held - Reconciliation of Digital Assets Held (Details) Details 87 false false R88.htm 995632 - Disclosure - Note 12 - Digital Assets Held - Details of Digital Assets Held (Details) Sheet http://www.bullish.com/20251231/role/statement-note-12-digital-assets-held-details-of-digital-assets-held-details Note 12 - Digital Assets Held - Details of Digital Assets Held (Details) Details 88 false false R89.htm 995633 - Disclosure - Note 13 - Loan and Other Receivables - Digital Assets (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-13-loan-and-other-receivables-digital-assets-details-textual Note 13 - Loan and Other Receivables - Digital Assets (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-13-loan-and-other-receivables-digital-assets-tables 89 false false R90.htm 995634 - Disclosure - Note 13 - Loan and Other Receivables - Digital Assets - Reconciliation of Loan and Other Receivables (Details) Sheet http://www.bullish.com/20251231/role/statement-note-13-loan-and-other-receivables-digital-assets-reconciliation-of-loan-and-other-receivables-details Note 13 - 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Investments in Financial Assets - Details of Investments in Financial Assets (Details) Details 93 false false R94.htm 995638 - Disclosure - Note 15 - Goodwill and Other Intangible Assets (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-15-goodwill-and-other-intangible-assets-details-textual Note 15 - Goodwill and Other Intangible Assets (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-15-goodwill-and-other-intangible-assets-tables 94 false false R95.htm 995639 - Disclosure - Note 15 - Goodwill and Other Intangible Assets - Details of Intangible Assets and Goodwill (Details) Sheet http://www.bullish.com/20251231/role/statement-note-15-goodwill-and-other-intangible-assets-details-of-intangible-assets-and-goodwill-details Note 15 - Goodwill and Other Intangible Assets - Details of Intangible Assets and Goodwill (Details) Details 95 false false R96.htm 995640 - Disclosure - Note 16 - Property and Equipment and Right-of-use Assets (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-16-property-and-equipment-and-rightofuse-assets-details-textual Note 16 - Property and Equipment and Right-of-use Assets (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-16-property-and-equipment-and-rightofuse-assets-tables 96 false false R97.htm 995641 - Disclosure - Note 16 - Property and Equipment and Right-of-use Assets - Detailed Information About Property and Equipment (Details) Sheet http://www.bullish.com/20251231/role/statement-note-16-property-and-equipment-and-rightofuse-assets-detailed-information-about-property-and-equipment-details Note 16 - Property and Equipment and Right-of-use Assets - Detailed Information About Property and Equipment (Details) Details 97 false false R98.htm 995642 - Disclosure - Note 17 - Other Assets - Details of Other Assets (Details) Sheet http://www.bullish.com/20251231/role/statement-note-17-other-assets-details-of-other-assets-details Note 17 - Other Assets - Details of Other Assets (Details) Details 98 false false R99.htm 995643 - Disclosure - Note 18 - Restricted Cash (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-18-restricted-cash-details-textual Note 18 - Restricted Cash (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-18-restricted-cash 99 false false R100.htm 995644 - Disclosure - Note 19 - Cash and Cash Equivalents - Details of Cash and Cash Equivalents (Details) Sheet http://www.bullish.com/20251231/role/statement-note-19-cash-and-cash-equivalents-details-of-cash-and-cash-equivalents-details Note 19 - Cash and Cash Equivalents - Details of Cash and Cash Equivalents (Details) Details 100 false false R101.htm 995645 - Disclosure - Note 20 - Convertible Redeemable Preference Shares (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-20-convertible-redeemable-preference-shares-details-textual Note 20 - Convertible Redeemable Preference Shares (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-20-convertible-redeemable-preference-shares 101 false false R102.htm 995646 - Disclosure - Note 21 - Other Payables - Details of Other Liabilities (Details) Sheet http://www.bullish.com/20251231/role/statement-note-21-other-payables-details-of-other-liabilities-details Note 21 - Other Payables - Details of Other Liabilities (Details) Details 102 false false R103.htm 995647 - Disclosure - Note 22 - Borrowings from Related Parties and Borrowings (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-22-borrowings-from-related-parties-and-borrowings-details-textual Note 22 - Borrowings from Related Parties and Borrowings (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-22-borrowings-from-related-parties-and-borrowings-tables 103 false false R104.htm 995648 - Disclosure - Note 22 - Borrowings from Related Parties and Borrowings - Details of Borrowings (Details) Sheet http://www.bullish.com/20251231/role/statement-note-22-borrowings-from-related-parties-and-borrowings-details-of-borrowings-details Note 22 - Borrowings from Related Parties and Borrowings - Details of Borrowings (Details) Details 104 false false R105.htm 995649 - Disclosure - Note 23 - Digital Assets Loan Payable (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-23-digital-assets-loan-payable-details-textual Note 23 - 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Share Capital and Share Premium - Details of Share Capital (Details) Details 108 false false R109.htm 995653 - Disclosure - Note 25 - Derivative Financial Instruments - Details of Derivative Instruments (Details) Sheet http://www.bullish.com/20251231/role/statement-note-25-derivative-financial-instruments-details-of-derivative-instruments-details Note 25 - Derivative Financial Instruments - Details of Derivative Instruments (Details) Details 109 false false R110.htm 995654 - Disclosure - Note 26 - Financial Risk Management (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-26-financial-risk-management-details-textual Note 26 - Financial Risk Management (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-26-financial-risk-management-tables 110 false false R111.htm 995655 - Disclosure - Note 26 - Financial Risk Management - Details of Liquidity Risk (Details) Sheet http://www.bullish.com/20251231/role/statement-note-26-financial-risk-management-details-of-liquidity-risk-details Note 26 - Financial Risk Management - Details of Liquidity Risk (Details) Details 111 false false R112.htm 995656 - Disclosure - Note 26 - Financial Risk Management - Details of Fair Value of Estimation (Details) Sheet http://www.bullish.com/20251231/role/statement-note-26-financial-risk-management-details-of-fair-value-of-estimation-details Note 26 - Financial Risk Management - Details of Fair Value of Estimation (Details) Details 112 false false R113.htm 995657 - Disclosure - Note 26 - Financial Risk Management - Activity of Investments in Financial Assets and Liabilities (Details) Sheet http://www.bullish.com/20251231/role/statement-note-26-financial-risk-management-activity-of-investments-in-financial-assets-and-liabilities-details Note 26 - Financial Risk Management - Activity of Investments in Financial Assets and Liabilities (Details) Details 113 false false R114.htm 995658 - Disclosure - Note 26 - Financial Risk Management - Reconciliation of Level 3 Measurements (Details) Sheet http://www.bullish.com/20251231/role/statement-note-26-financial-risk-management-reconciliation-of-level-3-measurements-details Note 26 - Financial Risk Management - Reconciliation of Level 3 Measurements (Details) Details 114 false false R115.htm 995659 - Disclosure - Note 28 - Earnings(Loss) Per Share (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-28-earningsloss-per-share-details-textual Note 28 - Earnings(Loss) Per Share (Details Textual) Details http://www.bullish.com/20251231/role/statement-note-28-earningsloss-per-share-tables 115 false false R116.htm 995660 - Disclosure - Note 28 - Earnings (Loss) Per Share - Details of Earnings/(Loss) Per Share (Details) Sheet http://www.bullish.com/20251231/role/statement-note-28-earnings-loss-per-share-details-of-earningsloss-per-share-details Note 28 - Earnings (Loss) Per Share - Details of Earnings/(Loss) Per Share (Details) Details http://www.bullish.com/20251231/role/statement-note-28-earningsloss-per-share-tables 116 false false R117.htm 995661 - Disclosure - Note 29 - Share-based Payments (Details Textual) Sheet http://www.bullish.com/20251231/role/statement-note-29-sharebased-payments-details-textual Note 29 - 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