Financial Instruments [Abstract] Financial Instruments [Abstract] Financial Instruments [Abstract] Disclosure of contingent liabilities [line items] Disclosure of contingent liabilities [line items] Interest expense Interest expense: Interest expense Disclosure of geographical areas [line items] Disclosure of geographical areas [line items] Purchase of property and equipment Purchase of property, plant and equipment, classified as investing activities Miscellaneous expense Adjustments For Miscellaneous Income (Expense) Adjustments For Miscellaneous Income (Expense) Acquisition Additions Other Than Through Business Combinations, Intangible Assets And Goodwill Additions Other Than Through Business Combinations, Intangible Assets And Goodwill Disposal of financial assets at fair value through profit or loss Proceeds From Financial Assets At Fair Value Through Profit Or Loss Proceeds From Financial Assets At Fair Value Through Profit Or Loss iGaming Segment iGaming Segment [Member] iGaming Segment Levels of fair value hierarchy [domain] Levels of fair value hierarchy [domain] Total operating expenses Operating expense Classes of share capital [axis] Classes of share capital [axis] Net defined benefit liability (asset) [axis] Net defined benefit liability (asset) [axis] Number of shares authorized (in shares) Number of shares authorised Schedule of net gains of losses by category of financial instruments Disclosure Of Detailed Information About Fair Value Measurement Of Financial Assets And Liabilities, Gains (Losses) [Table Text Block] Disclosure Of Detailed Information About Fair Value Measurement Of Financial Assets And Liabilities, Gains (Losses) Total equity Equity at beginning of period Equity at end of period Equity Equity Cash generated from operations Cash flows from (used in) operations International-other Other International Countries [Member] Other International Countries Property and equipment, net Property, plant and equipment Disposal of short-term investment Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities Schedule of quantitative information about right-of-use assets Disclosure of quantitative information about right-of-use assets [text block] Disclosure of detailed information about borrowings [table] Disclosure of detailed information about borrowings [table] Financial assets Non-current financial assets at fair value through profit or loss Beginning balance Ending balance Intangible assets and goodwill Statement of changes in equity [line items] Statement of changes in equity [line items] Other current liabilities Other current liabilities Total comprehensive income attributable to: Comprehensive income attributable to [abstract] Level 1 Level 1 of fair value hierarchy [member] Disclosure of geographical areas [table] Disclosure of geographical areas [table] Level 2 Level 2 of fair value hierarchy [member] Prepaid expenses, and other assets Adjustments for decrease (increase) in prepaid expenses Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss, category [member] DoubleDown Interactive Co., Ltd. Profit (loss), attributable to owners of parent Translation differences Increase (decrease) through net exchange differences, intangible assets and goodwill Statement of financial position [abstract] Sales and marketing Sales and marketing expense Loss on valuation of financial assets Loss On Valuation Of Financial Assets Loss On Valuation Of Financial Assets Contract liabilities Adjustments for increase (decrease) in contract liabilities Cover [Abstract] Prepaid expenses and other assets Current prepayments and other current assets New standards and interpretations adopted during the interim period Description Of Accounting Policy For New Accounting Standards Adopted During The Period [Policy Text Block] Description Of Accounting Policy For New Accounting Standards Adopted During The Period Borrowings term Borrowings Term, Extension Borrowings Term, Extension Total current liabilities Current liabilities Direct-to-Consumers Direct-to-Consumers [Member] Direct-to-Consumers 4.6% Senior Notes 4.6% Senior Notes [Member] 4.6% Senior Notes Deferred tax asset Deferred tax assets Non - controlling interests Non-controlling interests [member] Non-controlling interests Comprehensive income, attributable to non-controlling interests Share premium Share premium Cash flows from financing activities Cash flows from (used in) financing activities [abstract] Number of game titles licensed under agreement Number Of Game Titles Licensed Under Agreement Number Of Game Titles Licensed Under Agreement Interest expense Adjustments for interest expense Total comprehensive income for the interim period Comprehensive income Statement of changes in equity [abstract] Retained earnings Retained earnings Measurement [domain] Measurement [domain] Social casino games Social Casino Games [Member] Social Casino Games Schedule of net defined benefit liability Disclosure of net defined benefit liability (asset) [text block] Loss on foreign currency transactions Loss On Foreign Currency Transactions Loss On Foreign Currency Transactions Document Fiscal Period Focus Document Fiscal Period Focus Number of real-money iGaming sites acquired Number Of Real-Money iGaming Sites Acquired Number Of Real-Money iGaming Sites Acquired Total assets Assets Royalty expense Royalty expense Accounts receivable, net Adjustments for decrease (increase) in trade and other receivables Legal Entity [Axis] Legal Entity [Axis] Subsidiaries [axis] Subsidiaries [axis] Profit attributable to DoubleDown Interactive Co., Ltd. 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changes in intangible assets and goodwill [table] Level 3 Level 3 of fair value hierarchy [member] Interest expense relating to lease liabilities Interest expenses Interest expense on lease liabilities Trademarks Trademarks [Member] Trademarks Lease liabilities Lease liabilities [abstract] Royalty agreement, term Royalty Agreement, Term Royalty Agreement, Term Disclosure of classes of share capital [table] Disclosure of classes of share capital [table] Gain (loss) on foreign currency translation Other comprehensive income, net of tax, exchange differences on translation of foreign operations Total non-current assets Non-current assets Share Capital, Reserves And Other Equity Interest [Abstract] Share Capital, Reserves And Other Equity Interest [Abstract] Share Capital, Reserves And Other Equity Interest [Abstract] General Information [Abstract] General Information [Abstract] General Information [Abstract] Disclosure of disaggregation of revenue from contracts with customers [line items] Disclosure of disaggregation of revenue from contracts with customers [line items] DoubleDown Interactive Co., Ltd. DoubleDown Interactive Co., Ltd. [Member] DoubleDown Interactive Co., Ltd. Disclosure of reconciliation of changes in intangible assets and goodwill [line items] Disclosure of reconciliation of changes in intangible assets and goodwill [line items] Goodwill Goodwill [member] Contract assets Current contract assets Effect of exchange rate changes on cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Net cash inflow from operating activities  Cash flows from (used in) operating activities Total Gains (Losses) On Financial Assets At Fair Value Through Profit Or Loss And Amortised Cost Gains (Losses) On Financial Assets At Fair Value Through Profit Or Loss And Amortised Cost Number of brands Number Of Brands Number Of Brands Entity [Domain] Entity [Domain] Geographical areas [domain] Geographical areas [domain] Document Fiscal Year Focus Document Fiscal Year Focus Accounts receivable, net Trade and other current receivables Adjustments to reconcile profit to net cash from operating activities: Adjustments to reconcile profit (loss) [abstract] Current liabilities Current financial liabilities Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] Sub-total Equity attributable to owners of parent [member] Finance cost Finance costs Schedule of financial assets Disclosure of financial assets [text block] Income tax expense Adjustments for income tax expense Other income Other income Basis of preparation and material accounting policies Disclosure of material accounting policy information [text block] International International [Member] International Gain on foreign currency transaction Foreign exchange gain Lease term Lessee, Lease Term Lessee, Lease Term Entity Central Index Key Entity Central Index Key Cash and cash equivalents Cash And Cash Equivalents1 [Member] Cash And Cash Equivalents1 Valuation techniques used in fair value measurement [axis] Valuation techniques used in fair value measurement [axis] Interest expense Interest expense on debt instruments issued Earnings per share Disclosure of earnings per share [text block] Profit attributable to: Profit (loss), attributable to [abstract] Accounts payable and accrued expenses Trade and other current payables Liabilities and equity Equity and liabilities [abstract] Unrealized loss on foreign currency Unrealized loss on foreign currency Unrealized Loss On Foreign Currency Transactions Unrealized Loss On Foreign Currency Transactions Discounted Cash Flow Method Discounted cash flow [member] Short-term investments Short-Term Investments, Current [Member] Short-Term Investments, Current Payment transferred into escrow Consideration Transferred into Escrow Consideration Transferred into Escrow Gains (losses) on disposal of financial assets Gains (Losses) On Disposal Of Financial Assets Gains (Losses) On Disposal Of Financial Assets Disclosure of litigations and arbitrations Disclosure Of Litigations And Arbitrations [Text Block] Disclosure Of Litigations And Arbitrations Depreciation and amortization (including right-of-use assets): Depreciation And Amortization Expense, Including Right-Of-Use Assets Depreciation And Amortization Expense, Including Right-Of-Use Assets Operating profit Profit (loss) from operating activities Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss, category [member] Long-term borrowings with related party Long-term borrowings with related party Non-current portion of non-current borrowings Disclosure of financial assets [line items] Disclosure of financial assets [line items] Total purchase consideration Consideration transferred, acquisition-date fair value Lease Disclosure of leases [text block] Repayment of lease liabilities Payments of lease liabilities, classified as financing activities Acquisition Disclosure of business combinations [text block] Other long-term employee benefits Adjustments for increase (decrease) in employee benefit liabilities Percentage of ownership Proportion of ownership interest in subsidiary Entity Registrant Name Entity Registrant Name Basic (in dollars per share) Basic earnings per share (in dollars per share) Basic earnings (loss) per share Schedule of revenue and noncurrent assets by geographical location Disclosure Of Revenue and Non-Current Assets By Geographical Location [Table Text Block] Disclosure Of Revenue and Non-Current Assets By Geographical Location Measurement [axis] Measurement [axis] Total Total Share Capital And Share Premium [Member] Total Share Capital And Share Premium Statement of cash flows [abstract] Weighted average shares outstanding - Diluted (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Disclosure of financial assets [table] Disclosure of financial assets [table] Accumulated comprehensive loss Accumulated other comprehensive income Employee Benefits [Abstract] Employee Benefits [Abstract] Employee Benefits [Abstract] Unrealized gain on foreign currency Adjustments For Unrealised Foreign Exchange Gains Adjustments For Unrealised Foreign Exchange Gains Schedule of changes in share capital Disclosure Of Detailed Information About Share Capital [Table Text Block] Disclosure Of Detailed Information About Share Capital Social casino game Social casino game [Member] Social casino game Germany GERMANY Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Gain on disposal of financial assets and liabilities Adjustments for gains (losses) on disposal of financial assets Major components of tax expense (income) [abstract] Major components of tax expense (income) [abstract] Royalty agreement, percentage of revenue for third-party game asset types Royalty Agreement, Percentage of Revenue for Third-Party Game Asset Types Royalty Agreement, Percentage of Revenue for Third-Party Game Asset Types Equity attributable to non-controlling interests Non-controlling interests Right-of-use assets Changes in right-of-use assets [abstract] Customer relationships Customer-related intangible assets [member] Retirement benefit plan Disclosure of employee benefits [text block] Schedule of changes in intangible assets Disclosure of reconciliation of changes in intangible assets and goodwill [text block] Non-controlling interests Profit (loss), attributable to non-controlling interests Equity Equity [abstract] Other expenses Other expenses, by nature Disclosure of disaggregation of revenue from contracts with customers [table] Disclosure of disaggregation of revenue from contracts with customers [table] Schedule of fair value measurements of assets Disclosure of fair value measurement of assets [text block] Disclosure of transactions between related parties [line items] Disclosure of transactions between related parties [line items] Other comprehensive income (loss): Other comprehensive income [abstract] Canada CANADA Classes of share capital Classes of share capital [domain] Operating segments [Abstract] Operating segments [Abstract] Accounting Policies, Changes In Accounting Estimates and Errors [Abstract] Accounting Policies, Changes In Accounting Estimates and Errors [Abstract] Accounting Policies, Changes In Accounting Estimates and Errors [Abstract] Intangible Assets Including Goodwill [Abstract] Intangible Assets and Goodwill [Abstract] Market-based fair value approach Market approach [member] Finance income Finance income Classes of financial liabilities [axis] Classes of financial liabilities [axis] Classes of financial liabilities [domain] Classes of financial liabilities [domain] Dilutive effect of all instruments on weighted average number of ordinary shares Dilutive effect of all instruments on weighted average number of ordinary shares Financial assets at amortized cost Financial Assets At Amortised Cost [Abstract] Financial Assets At Amortised Cost Acquisitions Additions to right-of-use assets Purchase of short-term investments Other cash payments to acquire equity or debt instruments of other entities, classified as investing activities Fair value of plan assets Plan assets [member] Payments of lease liabilities Payments Cash outflow for leases Interest income Adjustments for interest income Lease liabilities at beginning of period Lease liabilities at end of period Lease liabilities Lease liabilities Share premium Share premium [member] Schedule of disaggregation of revenue from contracts with customers Disclosure of disaggregation of revenue from contracts with customers [text block] Timing of transfer of goods or services [axis] Timing of transfer of goods or services [axis] DoubleDown Interactive Co., Ltd. Comprehensive income, attributable to owners of parent Total liabilities Liabilities Financial liabilities Non-current financial liabilities at fair value through profit or loss Share capital Issued capital Disclosure of subsidiaries [table] Disclosure of subsidiaries [table] Categories of financial assets [axis] Categories of financial assets [axis] Disclosure of net defined benefit liability (asset) [line items] Disclosure of net defined benefit liability (asset) [line items] Timing of transfer of goods or services [domain] Timing of transfer of goods or services [domain] Income taxes payable Current tax liabilities, current Number of shares outstanding (in shares) Common shares (in shares) Number of shares outstanding Other expense Other expense Other expense, by function Products and services [axis] Products and services [axis] Total Financial liabilities Income tax expense Tax expense (income) Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss [abstract] Cash flows from operating activities Cash flows from (used in) operating activities [abstract] Other non-current assets Adjustments For Decrease (Increase) In Other Noncurrent Assets Adjustments For Decrease (Increase) In Other Noncurrent Assets Document Period End Date Document Period End Date Expression of interest, price per share (in dollars per share) Non-Binding Expression Of Interest, Price Per Share Non-Binding Expression Of Interest, Price Per Share Disclosure of classes of share capital [line items] Disclosure of classes of share capital [line items] Translation differences Increase (decrease) through net exchange differences, right-of-use assets Valuation techniques used in fair value measurement [domain] Valuation techniques used in fair value measurement [domain] United Kingdom UNITED KINGDOM Top of range Top of range [member] Other current and non-current liabilities Adjustments For Increase (Decrease) In Other Noncurrent Liabilities Adjustments For Increase (Decrease) In Other Noncurrent Liabilities Schedule of quantitative information about lease liabilities Disclosure Of Quantitative Information About Lease Liabilities [Table Text Block] Disclosure Of Quantitative Information About Lease Liabilities Research and development Research and development expense Other non-current assets Other non-current assets Goodwill Goodwill Sub-total Gains (losses) on financial assets at amortised cost Pension adjustments, net of tax Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans Document Type Document Type Fees and commissions Fee and commission expense Classes of financial assets [axis] Classes of financial assets [axis] Profit or loss [abstract] Contract liabilities Contract liabilities Current contract liabilities Schedule of operating expense by nature Disclosure Of Detailed Information About Operating Expense By Nature [Table Text Block] Disclosure Of Detailed Information About Operating Expense By Nature Financial liabilities at amortized cost Financial liabilities at amortized cost [Abstract] Financial liabilities at amortized cost Schedule of valuation techniques and inputs for fair value measurements Disclosure of significant unobservable inputs used in fair value measurement of assets [text block] Borrowings by name [domain] Borrowings by name [domain] Leases [Table] Leases [Table] Leases [Table] Accounts receivable, net Trade receivables [member] Equity attributable to DoubleDown Interactive Co., Ltd. Equity attributable to owners of parent Revenue Revenue from contracts with customers Earnings per share: Earnings per share [abstract] Range [axis] Range [axis] Reconciliation of changes in intangible assets and goodwill [abstract] Disclosure of reconciliation of changes in intangible assets and goodwill [abstract] Components of equity [axis] Components of equity [axis] Schedule of financial liabilities Disclosure of financial liabilities [text block] Disclosure of financial liabilities [line items] Disclosure of financial liabilities [line items] Deferred tax liabilities Deferred tax liabilities Profit before income tax Profit before income tax: Profit (loss) before tax Income taxes paid Income taxes paid (refund), classified as operating activities Other comprehensive income (loss) Other comprehensive income Controlling shareholder Entities with joint control or significant influence over entity [member] Accrued income Accrued Income [Member] Accrued Income Net increase in cash and cash equivalents Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Depreciation and amortization Adjustments for depreciation and amortisation expense Shareholders' equity Disclosure of share capital, reserves and other equity interest [text block] Interest expense on borrowings Accrued interest on 4.6% Senior Notes with related party Interest expense on borrowings Gain on valuation of financial assets Gain on Valuation of Financial Assets Gain on Valuation of Financial Assets Disclosure of subsidiaries [line items] Disclosure of subsidiaries [line items] Categories of related parties [domain] Categories of related parties [domain] Noncurrent assets Noncurrent Assets [Member] Noncurrent Assets Disclosure of disaggregation of revenue from contracts with customers [abstract] Interest received Interest received, classified as operating activities Loss on valuation of financial assets and liabilities Adjustments for Decrease in Financial Assets Measured at Fair Value Through Profit or Loss Adjustments for Decrease in Financial Assets Measured at Fair Value Through Profit or Loss Current assets Current Assets [Member] Current Assets Products and services [domain] Products and services [domain] Schedule of segment information Disclosure of operating segments [text block] Subsidiaries [domain] Subsidiaries [domain] Weighted average shares outstanding - Basic (in shares) Weighted average shares outstanding - basic (in shares) Weighted average number of ordinary shares used in calculating basic earnings per share DoubleU Games DoubleU Games [Member] DoubleU Games Borrowings by name [axis] Borrowings by name [axis] Current assets Current financial assets 4.6% Senior notes with related party Borrowings Leases [Line Items] Leases [Line Items] Leases [Line Items] Sub-total Gains (losses) on financial assets at fair value through profit or loss Classification of operating expenses by nature Disclosure of expenses by nature [text block] Short-term investments Short-term investments, classified as cash equivalents Commitments and contingencies Disclosure of commitments and contingent liabilities [text block] Financial instruments Disclosure of financial instruments [text block] iGaming iGaming [Member] iGaming Amount modified to be contingent upon employment Performance-Based Incentive Plan, Amount Modified To Be Contingent Upon Employment Performance-Based Incentive Plan, Amount Modified To Be Contingent Upon Employment Classes of intangible assets and goodwill [domain] Classes of intangible assets and goodwill [domain] Borrowings, interest rate Borrowings, interest rate Net cash (outflow) from investing activities  Cash flows from (used in) investing activities Number of depositary shares per common share (in shares) Number of Depositary Shares Per Common Share Number of Depositary Shares Per Common Share Net cash (outflow) from financing activities  Cash flows from (used in) financing activities Non-current assets Non-current financial assets DoubleDown Interactive LLC DoubleDown Interactive LLC [Member] DoubleDown Interactive LLC Personnel expenses Employee benefits expense Accrued expenses Accrued Liabilities1 [Member] Accrued Liabilities1 Total current assets Current assets Sub-total Gains (losses) on financial liabilities at fair value through profit or loss Disclosure of operating segments [table] Disclosure of operating segments [table] Statement of changes in equity [table] Statement of changes in equity [table] Indemnification agreement, maximum limit of losses for every 12-month period Indemnification Agreement, Maximum Limit Of Losses For Every 12-Month Period Indemnification Agreement, Maximum Limit Of Losses For Every 12-Month Period Over time Goods or services transferred over time [member] Segments [axis] Segments [axis] Non-current lease liabilities Lease Liabilities, Noncurrent [Member] Lease Liabilities, Noncurrent Cost of revenue Cost of sales Current portion of borrowings with 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about borrowings [line items] Disclosure of detailed information about borrowings [line items] Advertising expenses Advertising expense Financial assets measured at amortized cost Financial assets at amortized cost Financial assets at amortised cost, category [member] Current lease liabilities Lease Liabilities, Current [Member] Lease Liabilities, Current Par value per share (in KRW per share) Par value per share Profit for the interim period Profit for the interim period Profit (loss) Loss on valuation of financial liabilities Loss On Valuation Of Financial Liabilities Loss On Valuation Of Financial Liabilities Working capital adjustments: Working Capital Adjustments [Abstract] Working Capital Adjustments Amendment Flag Amendment Flag Components of equity [domain] Components of equity [domain] Total non-current liabilities Non-current liabilities Disclosure of operating segments [line items] Disclosure of operating segments [line items] Number of shares issued (in shares) Number of shares issued Segment information Disclosure of entity's operating segments [text block] Depreciation Depreciation of right-of-use assets Depreciation, right-of-use assets Range [domain] Range [domain] Current portion of borrowings with related party Borrowings With Related Party, Current [Member] Borrowings With Related Party, Current Royalty agreement, percentage of revenue for proprietary assets Royalty Agreement, Percentage of Revenue for Proprietary Assets Royalty Agreement, Percentage of Revenue for Proprietary Assets Retained earnings Retained earnings [member] Borrowings [abstract] Provision for severance benefits Adjustments For Increase (Decrease) In Severance Benefits Adjustments For Increase (Decrease) In Severance Benefits Interest income Interest income Accounts payable and accrued expenses Adjustments for increase (decrease) in trade and other payables Recurring fair value measurement Recurring fair value measurement [member] Disclosure of contingent liabilities [table] Disclosure of contingent liabilities [table] Present value of defined benefit obligations Present value of defined benefit obligation [member] Lease [Abstract] Lease [Abstract] Leases [Abstract] Analysis of income and expense [abstract] Accounts payable and accrued expenses Amounts payable, related party transactions Revenue that was included in contract liability balance at beginning of period Revenue that was included in contract liability balance at beginning of period Depreciation and amortization Depreciation and amortisation expense Non-current liabilities Non-current financial liabilities Categories of financial assets [domain] Categories of financial assets [domain] Comprehensive income (loss) for the interim period Comprehensive income [abstract] Current lease liabilities Current lease liabilities Net defined benefit liabilities (assets) Net defined benefit liability (asset) American depositary shares American Depositary Shares [Member] American Depositary Shares Diluted (in 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used in calculating basic and diluted earnings per share [abstract] Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract]