Transaction costs, shares Transaction Costs Shares Transaction costs, shares Description of accounting policy for employee benefits [text block] Employee benefits All levels of fair value hierarchy [member] All levels of fair value hierarchy [member] Entity Address, City or Town Entity Address, City or Town Subclassifications of assets, liabilities and equities [abstract] Fair value of issuance of preferred shares. Fair Value Of Issuance Of Preferred Shares Fair value of financial debt issuance of preferred shares Maturity of group reportable losses. Maturity Of Group Reportable Losses [Table] Maturity Of Group Reportable Losses [Table] Interest calculated on Series B & C shares Interest calculated on Series B & C shares. Interest Calculated On Series B And C Shares Interest calculated on Series B & C shares Entity Ex Transition Period Entity Ex Transition Period Sub-total other comprehensive profit (loss) for the period Other comprehensive income Other comprehensive profit/(loss) for the period Payroll related accrual Payroll related accrual current. Payroll Related Accrual Current Schedule of geographical areas table text block. Schedule Of Geographical Areas Table [Text Block] Schedule of Non-current Assets, Excluding Financial and Deferred Income Tax Assets by Geographic Area Current service cost Current service cost, defined benefit plans Current service cost Right-of-use assets Balance as of December 31, Balance as of January 1, Right-of-use assets Analysis of income and expense [abstract] Office equipment [member] Office - IT Tools Business Contact [Member] Business Contact Accumulated depreciation and amortisation [member] Accumulated Depreciation Disclosure of financial instruments [text block] Financial Instruments / Risk Management Number of share options exercised in share-based payment arrangement Number of Options, Exercised Amendment Flag Amendment Flag Total diluted earnings (loss) per share Diluted earnings (loss) per share Diluted, loss for the period attributable to equity holders Preference shares [member] Preference Shares Current lease liabilities Short-term lease liabilities Current Adjustments for unrealised foreign exchange losses (gains) - Non-realized foreign exchange differences Depreciation, right-of-use assets - Depreciation of right-of-use assets Depreciation charge for the period Disclosure of contingent liabilities [table] Disclosure Of Contingent Liabilities [Table] Fixed rate of preferred dividend deemed interest. Fixed Rate Of Preferred Dividend Deemed Interest Fixed rate of preferred dividend deemed interest Later than one year [member] Over one year Trade payables Total trade and other current payables Trade and other current payables Trade payables Applicable tax rate Applicable tax rate Line items by function [member] Line items by function [member] Interest received, classified as operating activities Interest received Geographical areas [member] Geographical areas [member] Outstanding shares expiration period. Outstanding Shares Expiration Period Outstanding shares expiration period Per share purchase price Per share purchase price. Per Share Purchase Price Items that may be reclassified subsequently to profit or loss Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] Number of share options forfeited in share-based payment arrangement Number of Options, Forfeited Assets and liabilities [axis] Assets and liabilities [axis] Financial assets Financial assets Financial assets at end of period Financial assets at beginning of period Classes of property, plant and equipment [axis] Classes of property, plant and equipment [axis] Auditor Firm ID Disclosure of trade and other payables [text block] Trade Payables Number of wholly owned subsidiaries. Number Of Wholly Owned Subsidiaries Number of wholly owned subsidiaries Entity Addresses, Address Type [Axis] Entity Addresses, Address Type Total property, plant and equipment Property, plant and equipment at end of period Property, plant and equipment at beginning of period Property, plant and equipment Property, plant & equipment Entity's total for business combinations [member] Entity's total for business combinations [member] Deductible temporary differences for which no deferred tax asset is recognised intangible asset. Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised Intangible Asset Intangible asset Euro currency. Euro Currency [Member] Euro Profit or loss [abstract] Fair value of plan assets at 1 January Fair value of plan assets at December 31, Total plan assets, at fair value Plan assets, at fair value Fair value of plan assets Five Percent Increase In USD. Five Percent Increase In U S D [Member] +5% USD Loss per share [abstract] Loss per share [abstract] Intangible assets other than goodwill [member] Intangible assets other than goodwill [member] Aggregate amount of payments committed. Aggregate Amount Of Payments Committed Aggregate amount of payments committed Disclosure of share capital, share premium and treasury shares. Disclosure Of Share Capital Share Premium And Treasury Shares [Line Items] Disclosure Of Share Capital Share Premium And Treasury Shares [Line Items] Disclosure of terms and conditions of share-based payment arrangement [abstract] Non-current assets Total non-current assets Long-term financial debt related to preferred shares/accrued dividend Ending balance Beginning balance Other non-current financial liabilities Long-term financial debt Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Total accrued income including contract assets Accrued income including contract assets Balance as of December 31, Balance as of January 1, Accrued income Adjustments for increase (decrease) in trade accounts payable - (De)/Increase in trade payables Interest Interest expense on other financial liabilities Payroll Payroll personnel expense. Payroll Personnel Expense [Member] Return on plan assets excluding interest income or expense, net of tax, defined benefit plans On plan assets Disclosure of deductible temporary differences for which no deferred tax asset is recognised explanatory. Disclosure Of Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised Explanatory Schedule of Deductible Temporary Differences for which No Deferred Tax Asset is Recognised Increase (decrease) in net defined benefit liability (asset) resulting from actuarial losses (gains) arising from experience adjustments Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from experience adjustments Actuarial gains / (losses) Number of group entities for consolidation. Number Of Group Entities For Consolidation Number of group entities for consolidation Share Capital Share capital [member] Cash flows from (used in) operating activities [abstract] Operating activities Disclosure of analysis of present value of defined benefit obligation that distinguishes nature, characteristics and risks [text block] Changes in Present Value of Defined Benefit Obligation Book value of long term financial debt Net debt ending balance Net debt beginning balance Net debt Net debt as of December 31, 2020 Indexation for the period Right-of-use assets, increase (decrease) in revaluation surplus Indexation for the period Granted shares expiration period. Granted Shares Expiration Period Granted shares expiration period Disclosure of non-adjusting events after reporting period [abstract] Ending balance Beginning balance Total intangible assets other than goodwill Intangible assets other than goodwill Intangible assets Assets and liabilities [member] Assets and liabilities [member] Disclosure of income and expenses. Disclosure Of Income And Expenses [Text Block] INCOME AND EXPENSES Commitments Related to Rennes University Collaboration Research Agreement Commitments related to rennes university collaboration research agreement. Commitments Related To Rennes University Collaboration Research Agreement [Member] Disclosure of group reportable losses maturity explanatory. Disclosure Of Group Reportable Losses Maturity Explanatory Schedule of Group Reportable Losses Maturity Five percent increase in Euro. Five Percent Increase In Euro [Member] +5% EUR Men. Men [Member] Men Commitments Related to Accure License Agreement Commitments related to Accure license agreement. Commitments Related To Accure License Agreement [Member] Impact on loss Net foreign exchange gain (loss) Foreign exchange gain (loss) Currency exchange gain (loss) Summary of Number and Weighted Average Exercise Prices of Share-based Options Disclosure of number and weighted average exercise prices of share options [text block] Disclosure of terms and conditions of share-based payment arrangement [line items] Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] Weighted average duration of defined benefit obligation Weighted average duration of defined benefit obligation cash and cash equivalents table. Summary Of Cash And Cash Equivalents Table [Text Block] Summary of Cash Balances Held at Banks and in Currencies Actuarial assumptions [axis] Actuarial assumptions [axis] Key management personnel compensation, share-based payment Share-based compensation Summary of Other Current Assets Disclosure of other current assets [text block] French Retirement Plan. French Retirement Plan [Member] French Retirement Plan Working capital adjustments. Working Capital Adjustments [Abstract] Working capital adjustments: Taxes paid Income taxes paid, classified as operating activities Taxes paid Disclosure of accounting judgements and estimates [text block] Critical Accounting Estimates And Judgments Disclosure of basis of preparation and changes to group accounting policies. Disclosure Of Basis Of Preparation And Changes To Group Accounting Policies [Table] Disclosure Of Basis Of Preparation And Changes To Group Accounting Policies [Table] Weighted average number of ordinary shares used in calculating basic earnings per share Weighted-average number of shares used to compute loss per share basic Shareholders exercised their right to redeem amount. Shareholders Exercised Their Right To Redeem Amount Shareholders exercised their right to redeem amount Summary of Components of Net Benefit Expense Disclosure of components of net benefit expense explanatory. Disclosure Of Components Of Net Benefit Expense Explanatory Commitments Related To Novartis License Agreement Commitments related to Novartis license agreement. Commitments Related To Novartis License Agreement [Member] Discount Rate Actuarial assumption of discount rates [member] City Area Code City Area Code Corporate information. Corporate Information [Abstract] Profit (loss) Loss for the period Loss for the period Adjustments for changes in receivables payables from to related parties. Adjustments For Changes In Receivables Payables From To Related Parties - Changes in receivables/payables from/to related parties Total lease liabilities Lease liabilities Lease liabilities Balance as of December 31, Balance as of January 1, Total Description of accounting policy of capitalization of transaction costs explanatory. Description Of Accounting Policy Of Capitalization Of Transaction Costs Explanatory Capitalization of transaction costs Number of reporting segments. Number Of Reporting Segments Number of reporting segments Document Period End Date Document Period End Date Disclosure other current assets and accrued income additional information details [table] Disclosure other current assets and accrued income additional information details. Disclosure of detailed information about financial instruments [abstract] Series C1a preference shares. Series C1a Preference Shares [Member] C1a Series Preference Shares Disclosure of range of exercise prices of outstanding share options [line items] Lease liabilities, increase (decrease) in revaluation. Lease Liabilities Increase Decrease In Revaluation Indexation for the period Current prepayments and current accrued income including current contract assets [abstract] Exercise prices of the outstanding awards Exercise price of outstanding share options Supplementary Retirement Savings Supplementary retirement savings. Supplementary Retirement Savings [Member] Accumulated losses Total retained earnings Retained earnings Interest expense accrued on Series B and C preferred shares Interest expense accrued on preferred shares Interest expense accrued on preferred shares. Interest paid Interest paid, classified as operating activities Interest paid Statistical Measurement [Axis] Statistical Measurement Project management fee. Project Management Fee Project management fee Increase (decrease) through exercise of options, equity Stock options exercised Cumulative translation adjustments Reserve of exchange differences on translation Disclosure of detailed information about intangible assets [line items] Disclosure Of Intangible Assets [Line Items] Functional or presentation currency [member] Functional or presentation currency [member] Schedule of potential dilutive effect not included in calculation of diluted earnings per share. Schedule Of Potential Dilutive Effect Not Included In Calculation Of Diluted Earnings Per Share [Text Block] Schedule of Potentially Dilutive Securities Operating income Revenue and other operating income Operating income Disclosure of detailed information about accrued expenses and other payables explanatory. Disclosure Of Detailed Information About Accrued Expenses And Other Payables Explanatory Schedule of Accrued Expenses and Other Payables Long-term financial debt related to preferred shares/accrued dividend Total non-current financial liabilities Non-current financial liabilities Administration cost Administrative expenses Administrative expenses Administration costs not reflected in return on plan assets, defined benefit plans Administration cost Statement of comprehensive income [abstract] Par value per share Par value per share Net cash flows from (used in) financing activities Cash flows from (used in) financing activities Net cash from financing activities Deferred tax assets foreign exchange differences spread over period. Deferred Tax Assets Foreign Exchange Differences Spread Over Period Foreign exchange differences spread over period Total Current accrued expenses and other current liabilities Accrued expenses and other payables Total Schedule of Useful Life of Property Plant and Equipment Schedule Of Estimated Useful Lives Of Property Plant And Equipment Explanatory The disclosure of estimated useful lives of property plant and equipment explanatory. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Share based payment award vesting period. Share Based Payment Award Vesting Period Vesting period Mortality Assumptions Actuarial assumption of mortality rates [member] Document Fiscal Period Focus Document Fiscal Period Focus Geographical areas [axis] Geographical areas [axis] Adjustments to reconcile profit (loss) [abstract] Non cash adjustments: Capitalized transaction costs Capitalized Transactions Costs Capitalized Transactions Costs Defined benefit plan applicable rate for converting mandatory savings. Defined Benefit Plan Applicable Rate For Converting Mandatory Savings Applicable rate for converting mandatory savings Transaction costs Transaction costs. Transaction Costs Transaction costs - Depreciation of property, plant and equipment Adjustments for depreciation expense Presentation of leases for lessee [abstract] Description of accounting policy for segment reporting [text block] Segment reporting Description of accounting policy for leases [text block] Leases Disclosure Other Current Assets And Accrued Income Additional Information Details [Line Items] Disclosure - Other Current Assets and Accrued Income - Additional Information (Details) [Line Items] Gain (loss) from revaluation of Series C long-term liability Gain Loss From Revaluation of Long Term Liability Gain (loss) from revaluation of long-term liability. Reserve of share-based payments Reserve for share-based payment Period of reasonably possible increase in actuarial assumption. Period Of Reasonably Possible Increase In Actuarial Assumption Assumptions, period increase Fixtures and fittings [member] Laboratory Fixtures and Fittings Total basic earnings (loss) per share Basic earnings (loss) per share Basic, loss for the period attributable to equity holders Shares issued during period stock option exercised. Shares Issued During Period Stock Option Exercised Stock options exercised, shares Securities Act File Number Entity File Number Personnel expense. Personnel Expense [Member] Personnel Expense Additional upfront fee payable upon reaching milestone. Additional Upfront Fee Payable Upon Reaching Milestone Additional upfront fee payable upon reaching milestone Description of accounting policy for earnings per share [text block] Earnings / (loss) per share Disclosure of property, plant and equipment [text block] Property, Plant And Equipment Defined benefit plan estimated interest rate updated based on swiss interest environment. Defined Benefit Plan Estimated Interest Rate Updated Based On Swiss Interest Environment Estimated interest rate updated based on Swiss interest environment Restricted Stock Restricted stocks member. Restricted Stocks [Member] Capitalized transaction costs. Capitalized Transaction Costs Capitalized transaction costs Liabilities arising from financing activities [member] Liabilities arising from financing activities [member] Description of accounting policy for recognition of revenue [text block] Grant income recognition Number of share options granted in share-based payment arrangement Number of shares, granted Number of Options, Granted Total average effective tax rate Average effective tax rate Weighted average tax Groups average expected tax rate 2023 Applicable rate for twenty twenty three. Applicable Rate For Twenty Twenty Three [Member] Statistical Measurement [Domain] Statistical Measurement Weighted average exercise price issued and exercised ending balance Weighted average exercise price issued and exercised beginning balance Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement Disclosure of related party [text block] RELATED PARTY DISCLOSURES Disclosure of expenses [text block] Schedule of Operating Expenses Share premium [member] Share premium Five Percent Decrease In HKD. Five Percent Decrease In H K D [Member] -5% HKD Auditor Location Corporate information. Disclosure Of Corporate Information [Text Block] Corporate Information Classes of intangible assets other than goodwill [axis] Classes of intangible assets other than goodwill [axis] Series B preferred shares and Series C preferred shares. Series B Preferred Shares And Series C Preferred Shares [Member] B Series Preferred Shares And C Series Preferred Shares Cash transferred Cash transferred Earnings per share [abstract] Additional payment upon milestones reached. Additional Payment Upon Milestones Reached Additional payment on milestones reached Laboratory equipment. Laboratory Equipment [Member] Laboratory Equipment Disclosure of detailed information about property, plant and equipment [line items] Disclosure Of Property Plant And Equipment [Line Items] Net cash flows from (used in) investing activities Cash flows from (used in) investing activities Net cash used in investing activities Summary of Payroll Expense Related to Restricted Stock Explanation of effect of share-based payments on entity's profit or loss [text block] Accrued R&D expense Accrued R&D expense Current. Accrued Research And Development Expense Current 2028 Maturity year four. Maturity Year Four [Member] Disclosure of attribution of expenses by nature to their function [line items] Disclosure Of Attribution Of Expenses By Nature To Their Function [Line Items] Amortisation, intangible assets other than goodwill Amortisation, intangible assets other than goodwill Amortization charge Statement of financial position [abstract] Increase (decrease) in net defined benefit liability (asset) resulting from contributions to plan by employer Decrease (increase) in net defined benefit liability (asset) resulting from resulting from contributions to plan by employer Contributions by employer Non-current lease liabilities Long-term lease liabilities Non-current Other comprehensive profit (loss): Other comprehensive loss. Other Comprehensive Loss [Abstract] Summary of long -term financial liabilities explanatory. Summary Of Long Term Financial Liabilities Explanatory Summary of Long -Term Financial Liabilities Disclosure of detailed information about property, plant and equipment [text block] Schedule of Property, Plant and Equipment Useful Life Other operating expenses. Other Operating Expenses [Member] Other Operating Expenses Cash flows from (used in) financing activities [abstract] Financing activities Statement of cash flows [abstract] Non-current liabilities Total non-current liabilities Disclosure of deferred taxes [text block] Schedule of Deferred Taxes Cash and Cash Equivalents Table. Cash And Cash Equivalents [Table] Cash And Cash Equivalents [Table] Issued capital, preference shares Issued capital, preference shares Total issued capital Issued capital Share capital Disclosure of financial liabilities [text block] LONG-TERM FINANCIAL LIABILITIES Preferred dividend interest payment. Preferred Dividend Interest Payment Preferred dividend payment interest Disclosure of detailed information about intangible assets [abstract] Total Non-current assets other than financial instruments, deferred tax assets, post-employment benefit assets, and rights arising under insurance contracts Current Fiscal Year End Date Current Fiscal Year End Date Swiss Franc currency. Swiss Franc Currency [Member] Swiss Franc Non refundable upfront fee paid. Non Refundable Upfront Fee Paid Non-refundable upfront fee paid Redemption option upon amount equivalent to investors investment interest. Redemption Option Upon Amount Equivalent To Investors Investment Interest Redemption option upon amount equivalent to investors investment interest Schedule of Accrued Expenses and Other Payables Disclosure of accrued expenses and other liabilities [text block] Total number of shares issued Number of shares issued Number of shares issued Number of shares in commercial register. Number Of Shares In Commercial Register Number of shares in commercial register Transaction costs Transaction costs for issuance of preferred shares capital increase. Transaction Costs For Issuance Of Preferred Shares Capital Increase Summary of Accrued Income Disclosure Of Accrued Income Explanatory Disclosure of accrued income explanatory. Interest expense Interest expense Other current receivables Other receivables Trade and other current payables [abstract] Disclosure of information about defined benefit plans [abstract] Expected dividend as percentage, share options granted Divdend yield Document Accounting Standard Document Accounting Standard Grantee contributions for restricted stock issuance. Grantee Contributions For Restricted Stock Issuance Grantee contributions for restricted stock issuance Deductible temporary differences for which no deferred tax asset is recognised Total Entity Address, Address Line One Entity Address, Address Line One Financial liabilities Ending balance Beginning balance Financial liabilities FX revaluation. F X Revaluation FX revaluation Schedule of Research and Development Commitments Disclosure Of Research And Development Commitments Explanatory Disclosure of research and development commitments explanatory. Reduction of defined benefit pension liabilities Decrease / (increase) from actual defined benefit obligation Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption Document Annual Report Document Annual Report Number of share options exercisable in share-based payment arrangement Number of Options, Exercisable Redemption option amount equivalent To investors investment accrued dividend and compound interest rate. Redemption Option Amount Equivalent To Investors Investment Accrued Dividend And Compound Interest Rate Redemption option amount equivalent to investors investment accrued dividend and compound interest rate Disclosure of leases [text block] RIGHT-OF-USE ASSETS AND LEASE LIABILITIES Disclosure of basis of preparation and changes to group accounting policies. Disclosure Of Basis Of Preparation And Changes To Group Accounting Policies [Abstract] Future Salary Increase Actuarial assumption of expected rates of salary increases [member] Mandatory Retirement Savings Mandatory retirement savings. Mandatory Retirement Savings [Member] Deemed interest accrued expense. Deemed Interest Accrued Expense Deemed interest accrued expense Attribution of expenses by nature to their function [axis] Attribution of expenses by nature to their function [axis] Five percent increase in ISK. Five Percent Increase In Islandic Krona [Member] +5% ISK Major Business Combination Major business combination [member] Increase (decrease) in net defined benefit liability (asset) resulting from contributions to plan by plan participants Decrease (increase) in net defined benefit liability (asset) resulting from contributions to plan by plan participants Contributions paid by participants Addition/remeasurement/renewal of lease period Oculis SA office lease Addition or remeasurement or renewal of lease period related to lease liabilities. Addition Or Remeasurement Or Renewal Of Lease Period Related To Lease Obligations Addition/remeasurement/renewal of lease period Oculis SA office lease Schedule of Weighted-Average Assumptions for Black-Scholes Option-Pricing Model Used Disclosure of indirect measurement of fair value of goods or services received, share options granted during period [text block] Interest calculated on leases Interest calculated on leases. Interest Calculated On Leases Interest calculated on leases Disclosure of financial liabilities [abstract] Cash flows from (used in) investing activities [abstract] Investing activities Address Type [Domain] Address Type Net defined benefit liability Defined benefit pension liabilities Other country member. Other Country [Member] Others Description of accounting policy for impairment of non-financial assets [text block] Impairment of non-financial assets Current liabilities Current liabilities Total current liabilities Disclosure of finance income [text block] Schedule of Finance Income Current assets [abstract] Current assets Description of accounting policy for financial instruments [text block] Financial instruments Auditor Name Prepaid and other cmc, research and clinical expenses. Prepaid And Other C M C Research And Clinical Expenses Prepaid and other CMC, research and clinical expenses Defined benefit plan, plan assets, insurance coverage parentage. Defined Benefit Plan Plan Assets Insurance Coverage Parentage Defined benefit plan, plan assets, insurance coverage parentage Analytical method validation. Analytical Method Validation [Member] Analytical Method Validation [Member] Description of accounting policy of group accounting explanatory. Description Of Accounting Policy Of Group Accounting Explanatory Group accounting Percentage of project management fee. Percentage Of Project Management Fee Percentage of project management fee Currency exchange partially offset by net gain from revaluation of USD cash balances. Currency Exchange Partially Offset By Net Gain From Revaluation Of U S D Cash Balances Currency exchange partially offset by net gain from revaluation of USD cash balances Eligible costs. Eligible Costs Eligible Costs Disclosure of information about key management personnel [text block] Summary of Key Management Including Board Of Directors And Executive Management Compensation Share-based Compensation Share based compensation personnel expense. Share Based Compensation Personnel Expense [Member] Redemption option amount equivalent To investors investment accrued dividend and compound interest amount. Redemption Option Amount Equivalent To Investors Investment Accrued Dividend And Compound Interest Amount Redemption option amount equivalent to investors investment accrued dividend and compound interest amount Entity Filer Category Entity Filer Category Net cash and cash equivalents variation (De)/Increase in cash and cash equivalents Increase (decrease) in cash and cash equivalents after effect of exchange rate changes Net increase (decrease) in cash and cash equivalents after effect of exchange rate changes Non-adjusting events after reporting period [member] Non-adjusting events after reporting period [member] Demographic assumptions Actuarial assumption of demographic assumptions Actuarial assumption of demographic assumptions. Warrants Warrants [member] Warrants. Actuarial gains/(losses) of defined benefit plans Actuarial gain (loss) on post-employment benefit obligations Total Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans Entity Current Reporting Status Entity Current Reporting Status Additions other than through business combinations, intangible assets other than goodwill Additions Summary of Significant Accounting Policies Disclosure of significant accounting policies [text block] Increase (decrease) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense Expected return ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Cumulative translation adjustments Reserve of exchange differences on translation [member] VAT Current value added tax receivables Disclosure of cash and cash equivalents [text block] Cash and Cash Equivalents Description of accounting policy for property, plant and equipment [text block] Property, plant and equipment Adjustments for payroll expenses related to restricted stock. Adjustments For Payroll Expenses Related To Restricted Stock - Payroll expenses related to restricted stock Employer contributions FX revaluation Accrued Income FX Revaluation Accrued income FX revaluation. U.S Retirement Plan. U S Retirement Plan [Member] U.S Retirement Plan Weighted average share price, share options granted Weighted average fair value at grant date per share Additional information about newly issued restricted shares of business combination. Additional Information About Newly Issued Restricted Shares Of Business Combination Newly issued restricted shares Disclosure of sensitivity analysis for actuarial assumptions [text block] Schedule of Quantitative Sensitivity Analysis for Significant Assumptions Decrease / (increase) from actual defined benefit obligation Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption Series B Shares B Series Preference Shares Series B preference shares. Series B Preference Shares [Member] Net defined benefit liability (asset) [member] Net defined benefit liability (asset) [member] Major components of tax expense (income) [abstract] Grant income. Grant Income Grant income Description of accounting policy for intangible assets other than goodwill [text block] Intangible assets Level 2 of fair value hierarchy [member] Level 2 Restricted Stock Awards Restricted stock awards. Restricted Stock Awards [Member] Net benefit income / (expense) Post-employment benefit expense in profit or loss, defined benefit plans Net benefit income / (expense) Proceeds from issuing shares Proceeds from issuing shares Depreciation, property, plant and equipment - Depreciation of property, plant and equipment Depreciation expense Entity Emerging Growth Company Entity Emerging Growth Company Adjustments for decrease (increase) in other current assets - De/(Increase) in other current assets Five percent decrease in ISK. Five Percent Decrease In Islandic Krona [Member] -5% ISK other currency. Other Currency [Member] Other Taxes at weighted average income tax Taxes at Weighted Average Income taxes Taxes at weighted average income tax. Defined benefit obligation at 1 January Defined benefit obligation at December 31, Defined benefit obligation at 1 January Defined benefit obligation at December 31, Defined benefit obligation Defined benefit obligation, at present value Defined benefit obligation Iceland Pension. Iceland Pension [Member] Iceland Pension Adjustments for decrease (increase) in accrued income other than contract assets - De/(Increase) in accrued income Weighted average exercise price of share options exercised in share-based payment arrangement Weighted Average Exercise Price, Exercised Depreciation of Right-of-Use Assets Depreciation of right of use assets operating expenses. Depreciation Of Right Of Use Assets Operating Expenses [Member] Components of equity [axis] Components of equity [axis] Contributions to plan by employees net defined benefit liability asset. Contributions To Plan By Employees Net Defined Benefit Liability Asset Contributions by employees Summary of Number and Weighted Average Exercise Prices of Restricted Stock Disclosure of number and weighted average exercise prices of other equity instruments [text block] Number of shares outstanding Ending balance, shares Beginning balance, shares Number of shares Losses (gains) arising from settlements, defined benefit plans Gains (losses) arising from settlements, defined benefit plans Impact of plan changes Office lease addition / remeasurement Office Lease Addition Or Remeasurement Liabilities Oculis SA office lease addition/remeasurement Key management personnel compensation, post-employment benefits Pension Entity Voluntary Filers Entity Voluntary Filers Employees' contributions Post-employment benefit expense, defined contribution plans Pension costs charges Disclosure of detailed information about property, plant and equipment [abstract] Operating expenses. Operating Expenses [Member] Operating Expenses Disclosure of changes in accounting estimates [abstract] Licences [member] Licences [member] Document Transition Report Document Transition Report Expected payment for two thousand twenty four. Expected Payment For Two Thousand Twenty Four [Member] 2024 Finance result, net Finance income (cost) Products and services [axis] Products and services [axis] Operating loss Profit (loss) from operating activities Lease liabilities, foreign currency revaluation. Lease Liabilities Foreign Currency Revaluation FX revaluation External Service Providers External service providers operating expenses. External Service Providers Operating Expenses [Member] Actuarial assumptions [member] Actuarial assumptions [member] US Dollar currency. U S Dollar Currency [Member] US Dollar Government grant income Income from government grants Fair value of restricted stock issued. Fair Value Of Restricted Stock Issued Fair value of restricted stock issued Net cash flows from (used in) operating activities Cash flows from (used in) operating activities Net cash flows used in operating activities Actuarial gain of defined benefit pension liabilities Actuarial gains (losses) arising from changes in demographic assumptions, net of tax, defined benefit plans Demographic assumptions Transaction costs Increase Decrease Through Transaction Costs Increase (decrease) through transaction costs. Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Net defined benefit liability (asset) [axis] Net defined benefit liability (asset) [axis] Transaction costs Transaction Costs For Issuance Of Preferred Shares Capital Increase Decrease Transaction costs for issuance of preferred shares capital increase decrease. Commitments for external research projects net. Commitments For External Research Projects Net Commitments for external research projects net Total Number of shares acquired Number of Shares Acquired Number of shares acquired. Disclosure of share capital, share premium and treasury shares. Disclosure Of Share Capital Share Premium And Treasury Shares [Abstract] Period of reasonably possible decrease in actuarial assumption. Period Of Reasonably Possible Decrease In Actuarial Assumption Assumptions, period decrease Equity [abstract] Equity attributable to equity holders of the parent Disclosure of changes in accounting estimates [line items] Disclosure Of Changes In Accounting Estimates [Line Items] Business combination agreement. Business Combination Agreement [Member] BCA [Member] Share premium Share premium Benefits deposited defined benefit obligation. Benefits Deposited Defined Benefit Obligation Benefits deposited Transaction costs related to business combination agreement recorded in accrued expenses and other payables trade payables. Transaction Costs Related To Business Combination Agreement Recorded In Accrued Expenses And Other Payables Trade Payables Transaction costs related to the BCA recorded in accrued expenses and other payables/trade payables Assets at end of period Assets at beginning of period Assets TOTAL ASSETS Schedule of Deductible Temporary Differences for which No Deferred Tax Asset is Recognised Disclosure of temporary difference, unused tax losses and unused tax credits [text block] Reimbursement of development related cost. Reimbursement Of Development Related Cost Reimbursement of development related cost Total increase (decrease) through transfers and other changes, intangible assets other than goodwill Increase (decrease) through transfers and other changes, intangible assets other than goodwill Increases license agreement payment Statement of changes in equity [abstract] Disclosure of geographical areas [abstract] Disclosure of defined benefit plans [line items] Disclosure Of Defined Benefit Plans [Line Items] Document Information [Line Items] Document Information [Line Items] Number of share options outstanding in share-based payment arrangement Number of Options, Outstanding ending balance Number of Options, Outstanding beginning balance Entity Registrant Name Entity Registrant Name Disclosure of basis of preparation and changes to group accounting policies. Disclosure Of Basis Of Preparation And Changes To Group Accounting Policies [Line Items] Disclosure of Basis of Preparation and Changes to Group Accounting Policies [Line Items] Switzerland SWITZERLAND Disclosure of changes in accounting estimates [table] Disclosure Of Changes In Accounting Estimates [Table] Reimbursed costs. Reimbursed Costs Reimbursed costs Comprehensive income Total comprehensive loss for the period Shares issued during period. Shares Issued During Period Issuance of shares Effect of exchange rate changes on cash and cash equivalents Exchange difference Impairment loss recognised in profit or loss, intangible assets other than goodwill Impairment loss recognised in profit or loss, intangible assets other than goodwill Impairment losses Hong Kong retirement plan. Hong Kong Retirement Plan [Member] Hong Kong Weighted average exercise price of share options forfeited in share-based payment arrangement Weighted Average Exercise Price, Forfeited Title of 12(b) Security Title of 12(b) Security Disclosure of sensitivity analysis for actuarial assumptions [table] Disclosure Of Sensitivity Analysis For Actuarial Assumptions [Table] Number of other equity instruments granted and exercised in share based payment arrangement. Number Of Other Equity Instruments Granted And Exercised In Share Based Payment Arrangement Number of restricted stocks granted and exercised during the year Disclosure of principal assumptions used for determining pension benefit obligations for group plan explanatory. Disclosure Of Principal Assumptions Used For Determining Pension Benefit Obligations For Group Plan Explanatory Summary of Principal Assumptions used in Determining Pension Benefit Obligations for Group's Plan Adjustments for net financial result. Adjustments For Net Financial Result - Net financial result Disclosure of reconciliation of accounting profit multiplied by applicable tax rates explanatory. Disclosure Of Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates Explanatory Schedule of Reconciliation of Profit (Loss) Multiplied by Weighted Average Applicable Tax Rate Number of restricted stocks issued and exercised ending balance Number of restricted stocks issued and exercised beginning balance Number of other equity instruments outstanding in share-based payment arrangement Disclosure of share-based payment arrangements [text block] Share Based Payment Estimate of benefit payments expected to be paid from defined benefit plan Group expects to contribute Property, plant and equipment [member] Property, plant and equipment [member] Document Type Document Type Disclosure of intangible assets [text block] Intangible Assets Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] Items that will not be reclassified to profit or loss Research and development expenses Research and Development Expenses Research and development expense Research and development expenses Disclosure of activities for share capital and share premium accounts explanatory. Disclosure Of Activities For Share Capital And Share Premium Accounts Explanatory Schedule of Activities for Share Capital and Share Premium Accounts Other PIPE investors considering a deemed value per share. Other P I P E Investors Considering Deemed Value Per Share Other PIPE investors considering deemed value per share Entity Shell Company Entity Shell Company Actuarial gain (loss) on post employment benefit obligations. Actuarial Gain Loss On Post Employment Benefit Obligations [Member] Actuarial gain / (loss) on post-employment benefit obligations Accrued income recognized. Accrued Income Recognized Accrued income recognized during the year Potential defined benefit obligation Increase (decrease) in potential defined benefit obligation due to reasonably possible increase in actuarial assumption Increase (decrease) in potential defined benefit obligation due to reasonably possible increase in actuarial assumption. Disclosure of Cash and CashEquivalents By Currency [LineItems] Disclosure Of Cash And CashEquivalents By Currency LineItems Disclosure of cash and cash equivalents by currency lineItems Conditional share capital. Conditional Share Capital [Member] Conditional Capital Income and expenses. Income And Expenses [Table] Income And Expenses [Table] Disclosure of detailed information about intangible assets [text block] Summarizes the Movement of Intangibles Assets Accrued preferred dividend. Accrued Preferred Dividend Accrued preferred dividend Treasury shares Treasury shares Treasury shares Bottom of range [member] Bottom of Range Disclosure of geographical areas [table] Disclosure Of Geographical Areas [Table] Schedule of Net Debt of Liabilities Disclosure of reconciliation of liabilities arising from financing activities [text block] Office equipment & hardware. Office Equipment Hardware [Member] Office Equipment & Hardware Security Exchange Name Security Exchange Name Disclosure of attribution of expenses by nature to their function [table] Disclosure Of Attribution Of Expenses By Nature To Their Function [Table] Transaction costs Decrease through transaction costs Decrease through transaction costs. Liquidity risk [member] Liquidity Risk Subsequent Events Disclosure of events after reporting period [text block] Liabilities [member] Liabilities [member] Sensitivity analysis for types of market risk [text block] Schedule of Sensitivity Changes in Exchange Rate Document Registration Statement Document Registration Statement Defined benefit plan applicable rate for converting supplementary savings. Defined Benefit Plan Applicable Rate For Converting Supplementary Savings Applicable rate for converting supplementary savings Useful life measured as period of time, property, plant and equipment Property, plant and equipment useful life Schedule of Sensitivity Changes in Exchange Rate Disclosure of effect of changes in foreign exchange rates [text block] Disclosure of financial liabilities [table] Disclosure Of Financial Liabilities [Table] Outsourced expenses. Outsourced Expenses Outsourced Expenses Disclosure of non-adjusting events after reporting period [line items] Adjustments for increase (decrease) in employee benefit liabilities - Post-employment benefits Additions or remeasurement or renewal of lease period related to right-of-use assets. Additions Or Remeasurement Or Renewal Of Lease Period Related To Right Of Use Assets Addition/remeasurement/renewal of lease period Oculis SA office lease Not later than one year [member] Less than one year Products and services [member] Products and services [member] Series C Shares Series C preference shares. Series C Preference Shares [Member] Series C Preference Shares Share price option-pricing model. Share Price Option Pricing Model Share price (option-pricing model) Entity Address, Country Entity Address, Country Contact Personnel Name Contact Personnel Name Other comprehensive income [abstract] Other comprehensive loss Other current assets and accrued income text block. Other Current Assets And Accrued Income [Text Block] Other Current Assets and Accrued Income Disclosure of detailed information about financial instruments [table] Disclosure Of Financial Instruments [Table] Expected volatility, share options granted Expected volatility Disclosure of non-adjusting events after reporting period [table] - Depreciation of right-of-use assets Adjustments For Depreciation Expense Right Of Use Assets Adjustments for depreciation expense right of use assets. Proceeds from capital increase Proceeds from issue of ordinary shares Maximum reimbursement of development related cost Maximum Reimbursement Of Development Related Cost Maximum reimbursement of development related cost. Risk free interest rate, share options granted Risk free interest rate Plan Assets Plan assets [member] Disclosure of contingent liabilities [abstract] Assets [abstract] ASSETS Maturity [axis] Maturity [axis] Percentage of reasonably possible increase in actuarial assumption Assumptions, increase Interest income Interest income (expense) Ordinary Shares Common Shares Ordinary shares [member] Income and expenses. Income And Expenses [Line Items] Income And Expenses [Line Items] Reserve of share-based payments [member] Reserve for share-based payment Disclosure of sensitivity analysis for actuarial assumptions [line items] Disclosure Of Sensitivity Analysis For Actuarial Assumptions [Line Items] Process optimization. Process Optimization [Member] Process Optimization [Member] Adjustments for interest expense - Interest expense on Series B & C preferred shares Five percent decrease In Euro. Five Percent Decrease In Euro [Member] -5% EUR Number of work packages. Number Of Work Packages Number of work packages Types of risks [axis] Types of risks [axis] 2025 Maturity year one. Maturity Year One [Member] Carrying amount [member] Carrying amount [member] Disclosure of summary of significant accounting policies. Disclosure Of Summary Of Significant Accounting Policies [Abstract] Dilutive effect of share options on number of ordinary shares Share options issued and outstanding Key management personnel compensation, short-term employee benefits Salaries and other short-term employee benefits Leasing. Leasing [Member] Leasing Total finance income Finance income Finance income Series C1b preference shares. Series C1b Preference Shares [Member] C1b Series Preference Shares Total payroll expense related to restricted stock Payroll Expense Related To Restricted Stock Net Payroll expense related to restricted stock net. Entity Central Index Key Entity Central Index Key Basis of Preparation and Changes to the Group's Accounting Policies Disclosure of changes in accounting policies [text block] Shares issued during period, shares. Shares Issued During Period Shares Issuance of shares, shares Defined benefit plan guaranteed interest to be credited to employees savings. Defined Benefit Plan Guaranteed Interest To Be Credited To Employees Savings Guaranteed interest to be credited to employees savings Acquisition cost Gross carrying amount [member] Issuance of shares Share issue related cost Women. Women [Member] Women 2024 and Subsequent Years Applicable rate for twenty twenty four and subsequent years. Applicable Rate For Twenty Twenty Four And Subsequent Years [Member] Disclosure of detailed information about property, plant and equipment [table] Disclosure Of Property Plant And Equipment [Table] Currency in which information is displayed [axis] Currency in which information is displayed [axis] Impact on equity Gain Loss Recognised in Profit or Loss Foreign Currency Risk Impact on Equity Gain loss recognised in profit or loss foreign currency risk impact on equity. Weighted average exercise price of other equity instruments granted and exercised in share based payment arrangement. Weighted Average Exercise Price Of Other Equity Instruments Granted And Exercised In Share Based Payment Arrangement Weighted average exercise price granted and exercised during the year Document Information [Table] Document Information [Table] Series A Shares A Series Preference Shares Series A preference shares. Series A Preference Shares [Member] Current tax expense (income) Current income tax (expense) / benefit Switzerland pension plan. Switzerland Pension Plan [Member] Switzerland pension plan Deductible temporary differences for which no deferred tax asset is recognised leasing. Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised Leasing Leasing Finance costs Finance expense Total finance expense Potential dilutive effect not included in calculation of diluted per share. Potential Dilutive Effect Not Included In Calculation Of Diluted Per Share Total Unused tax losses [member] Unused Tax Losses Supplemental non cash financing information. Supplemental Non Cash Financing Information [Abstract] Supplemental Non-Cash Financing Information Operating expense Total Operating Expenses Operating expenses Unused tax losses for which no deferred tax asset recognised Total Tax losses in Switzerland Disclosure of range of exercise prices of outstanding share options [table] Key management personnel compensation Total Exercise price, share options granted Exercise price Impact on equity. Foreign Currency Risk Impact On Equity Impact on equity Five Percent Increase In HKD. Five Percent Increase In H K D [Member] +5% HKD On obligation Actuarial gains (losses) arising from experience adjustments, net of tax, defined benefit plans Actuarial gain on obligation Total Weighted average exercise price not subject to repurchase Weighted average exercise price of other equity instruments not subject to repurchase in share based payment arrangement. Weighted Average Exercise Price Of Other Equity Instruments Not Subject To Repurchase In Share Based Payment Arrangement Payment of first contractual non refundable cost contribution. Payment Of First Contractual Non Refundable Cost Contribution Payment of first contractual non refundable cost contribution Interest cost on benefit obligation Interest cost Interest cost Interest expense, defined benefit plans Interest cost on benefit obligation Entity Interactive Data Current Entity Interactive Data Current Accumulated losses Retained earnings [member] Assumptions, decrease Percentage of reasonably possible decrease in actuarial assumption Assumptions, decrease Non-current assets [abstract] Non-current assets Weighted average exercise price of share options exercisable in share-based payment arrangement Weighted Average Exercise Price, Exercisable Diluted earnings per share [abstract] Diluted Loss per share 2026 Maturity year two. Maturity Year Two [Member] Increase (decrease) through share-based payment transactions, equity Share based payment Disclosure of defined benefit plans [table] Disclosure Of Defined Benefit Plans [Table] Local Phone Number Local Phone Number Key Management Personnel Compensation Payroll Expenses Related To Restricted Stock. Key Management Personnel Compensation Payroll Expenses Related To Restricted Stock Payroll expenses related to restricted stock Payments received during the year Payments received. Payments Received Payments received during the year Ranges [member] Transaction costs related to BCA Transactions costs related to the BCA Transactions Cost Related to Business Combination Agreement Transactions cost related to business combination agreement. Iceland Krona currency. Iceland Krona Currency [Member] Iceland Krona Payments of lease liabilities Payments of lease liabilities, classified as financing activities Principal payment of lease obligation Disclosure of share capital, reserves and other equity interest [text block] Share Capital, Share Premium and Treasury Shares Disclosure of commitments and contingent liabilities [text block] Commitments and Contingencies Business combinations [axis] Business combinations [axis] Pensions and Other Post Employment Benefit Plans Disclosure of defined benefit plans [text block] Document Shell Company Report Document Shell Company Report Gains (losses) on exchange differences on translation of foreign operations, before tax Exchange differences Disclosure of finance cost [text block] Schedule of Finance Expense Liabilities arising from financing activities [axis] Liabilities arising from financing activities [axis] Disclosure of current income tax (expense) and deferred tax (expense) explanatory. Disclosure Of Current Income Tax Expense And Deferred Tax Expense Explanatory Schedule of Total Tax (Expense) Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] Corporate Information Disclosure of notes and other explanatory information [text block] Deferred tax expense (income) Deferred tax (expense) / income 2027 Maturity year three. Maturity Year Three [Member] Range [axis] Deductible temporary differences for which no deferred tax asset is recognised, pension. Deductible Temporary Differences For Which No Deferred Tax Asset Is Recognised Pension Pension Document Fiscal Year Focus Document Fiscal Year Focus Disclosure of reclassification of financial instruments [text block] Schedule of Carrying Amounts of Financial Assets and Liabilities General and administrative expenses General and Administrative Expenses General and administrative expense General and administrative expenses Weighted average number of ordinary shares used in calculating diluted earnings per share Weighted-average number of shares used to compute loss per share diluted Disclosure of share capital, share premium and treasury shares. Disclosure Of Share Capital Share Premium And Treasury Shares [Table] Disclosure Of Share Capital Share Premium And Treasury Shares [Table] Other current assets Other current assets Total Fair Value At fair value [member] Disclosure of fair value of plan assets [text block] Changes in the Fair Value of Plan Assets Disclosure of net debt. Disclosure Of Net Debt Schedule of Net Debt of Liabilities Number of restricted stocks not subject to repurchase Number of other equity instruments not subject to repurchase in share based payment arrangement. Number Of Other Equity Instruments Not Subject To Repurchase In Share Based Payment Arrangement Depreciation of PPE Depreciation of Property Plant and Equipment Operating Expenses [Member] Depreciation of property plant and equipment operating expenses. Total cash and cash equivalents Cash and cash equivalents Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and cash equivalents Aggregated measurement [member] Other current financial assets Other current assets (without prepaids) Interest income, defined benefit plans Interest income, defined benefit plans Interest income First milestone payment. First Milestone Payment First milestone payment Classes of liabilities [axis] Classes of liabilities [axis] Expected term, share options granted. Expected Term Share Options Granted Expected term Other current asset. Other Current Asset [Member] Other Current Assets [Member] Effect of unrecorded tax losses Effect of unrecorded tax losses Tax effect of tax losses Commitments Related to Sandoz GMP Manufacturing Agreement Commitments related to Sandoz GMP manufacturing agreement. Commitments Related To Sandoz G M P Manufacturing Agreement [Member] Risks [member] Risks [member] Effect of non deductible expenses Effect of non deductible expenses Tax effect of expense not deductible in determining taxable profit (tax loss) Effect of unrecorded tax losses Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Benefits paid from plan assets Benefits paid from plan assets. Benefits Paid From Plan Assets Description of accounting policy of standard and interpretations in issue not yet adopted explanatory. Description Of Accounting Policy Of Standard And Interpretations In Issue Not Yet Adopted Explanatory Standard and Interpretations in issue not yet adopted Issued capital [member] Share capital Share Capital [Member] Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] Disclosure of maturity analysis for non-derivative financial liabilities [text block] Schedule of Financial Instruments Except Long Term Financial Liabilities and Lease Liabilities Disclosure of geographical areas [text block] Segment Information Total expense from share-based payment transactions Expense from share-based payment transactions Total expense recognized for share options granted Potential defined benefit obligation Increase (decrease) in potential defined benefit obligation due to reasonably possible decrease in actuarial assumption Increase (decrease) in potential defined benefit obligation due to reasonably possible decrease in actuarial assumption. Classes of share capital [axis] Classes of share capital [axis] Adjustments for decrease increase in accrued expenses and other payables. Adjustments For Decrease Increase In Accrued Expenses And Other Payables - (De)/Increase in accrued expenses and other payables Exercisable shares expiration period. Exercisable Shares Expiration Period Exercisable shares expiration period Dilutive effect of restricted stock subject to repurchase. Dilutive Effect Of Restricted Stock Subject To Repurchase Restricted stock subject to repurchase Non-current liabilities [abstract] Non-current liabilities Top of range [member] Top of Range Defined benefit plans [axis] Defined benefit plans [axis] Interests on lease liabilities Interest expense for the period Interest expense on lease liabilities Statement of changes in equity [table] Statement Of Changes In Equity [Table] Commitments for external research projects within one year. Commitments For External Research Projects Within One Year Within one year Actuarial loss on post employment benefit obligations Actuarial loss on post employment benefit obligations. Actuarial Loss On Post Employment Benefit Obligations Actuarial loss on post employment benefit obligations Iceland ICELAND Office furniture and equipment. Office Furniture And Equipment [Member] Office Furniture and Equipment Commitments for external research projects between one and five years. Commitments For External Research Projects Between One And Five Years Between one and five years 2029 Maturity Year Five. Maturity Year Five [Member] Deferred tax assets Deferred tax assets Deferred tax assets Deferred income tax assets Net surplus (deficit) in plan Surplus (deficit) in plan Net benefit asset / (liability) Cover [Abstract] Disclosure of earnings per share [text block] Loss Per Share Assumption of discount rates Actuarial assumption of discount rates Discount rate FX revaluation. Foreign Currency Revaluation FX revaluation Measurement [axis] Currency translation differences Other comprehensive income, net of tax, exchange differences on translation of foreign operations Other comprehensive income, net of tax, exchange differences on translation of foreign operations Disclosure of contingent liabilities [line items] Disclosure Of Contingent Liabilities [Line Items] Restricted shares awards. Restricted Shares Awards Restricted shares awards Forfeited shares expiration period. Forfeited Shares Expiration Period Forfeited shares expiration period Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] Current assets Total current assets Cash and cash equivalents [abstract] Liabilities at end of period Liabilities Liabilities at beginning of period Liabilities Total Liabilities Five Percent Decrease In USD. Five Percent Decrease In U S D [Member] -5% USD Current prepaid expenses Prepaid expenses Current liabilities [abstract] Current liabilities Description of accounting policy of preferred shares explanatory. Description Of Accounting Policy Of Preferred Shares Explanatory Preferred shares PIPE investments and conversion Equity interests of acquirer Deferred tax liabilities Deferred income tax liabilities Deferred tax liabilities Description of accounting policy for income tax [text block] Taxes Description of accounting policy of current versus noncurrent classification explanatory. Description Of Accounting Policy Of Current Versus Noncurrent Classification Explanatory Current vs. non-current classification Equity Equity [member] Schedule of trade payables. Schedule Of Trade Payables Summary of Trade Payables Present Value of Defined Benefit Obligation Present value of defined benefit obligation [member] Temporary difference, unused tax losses and unused tax credits [member] Temporary difference, unused tax losses and unused tax credits [member] Disclosure of transactions between related parties [abstract] Disclosure of financial liabilities [line items] Disclosure Of Financial Liabilities [Line Items] Statement of changes in equity [line items] Statement Of Changes In Equity [Line Items] Equity and liabilities TOTAL EQUITY AND LIABILITIES Disclosure of quantitative information about right-of-use assets [text block] Schedule of Right-of-use Assets - Recognized expense for stock option plan Adjustments for share-based payments Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Table] Weighted average exercise price of share options granted in share-based payment arrangement Weighted Average Exercise Price, Granted Disclosure of detailed information about intangible assets [table] Disclosure Of Intangible Assets [Table] Treasury Shares Treasury shares [member] Upfront payment. Upfront Payment Upfront payment Disclosure of quantitative information about lease liabilities explanatory. Disclosure Of Quantitative Information About Lease Liabilities Explanatory Schedule of Lease Obligations Share-based payment arrangements [member] Share-based payment arrangements [member] Description of accounting policy for foreign currency translation [text block] Foreign currency transactions Aggregated time bands [member] Aggregated time bands [member] Schedule of Carrying Amounts of Financial Assets and Liabilities Disclosure of detailed information about financial instruments [text block] Cashflows Net Cash Flows From Financing Activities Net cash flows from financing activities. Other comprehensive income, net of tax, exchange differences on translation, other than translation of foreign operations Currency translation differences Assumption for future salary increases Actuarial assumption of expected rates of salary increases Future salary increases Trading Symbol Trading Symbol Equity and liabilities [abstract] EQUITY AND LIABILITIES Disclosure of detailed information about financial instruments [line items] Disclosure Of Financial Instruments [Line Items] Number of managed and operated segments. Number Of Managed And Operated Segments Number of managed and operated segments Purchase of property, plant and equipment Purchase of property, plant and equipment, classified as investing activities Payment for purchase of property, plant and equipment Proceeds from issue of preference shares Proceeds from issuance of preferred shares, classified as liabilities Adjustments for interests on lease liabilities. Adjustments For Interests On Lease Liabilities - Interests on lease liabilities Total tax (expense) / income reported in the income statement Income tax expense Tax income (expense) Tax expense (income) Income tax expense Total tax (expense) / income reported in the income statement Actuarial assumption of expected rates of pension increases Future pensions increases Weighted average exercise price of share options outstanding in share-based payment arrangement Weighted Average Exercise Price, Outstanding ending balance Weighted Average Exercise Price, Outstanding beginning balance Percentage of possible tax. Percentage Of Possible Tax Percentage Of Possible Tax Acquisitions through business combinations, property, plant and equipment Acquisitions Disclosure of defined benefit plans [abstract] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Actuarial assumption of retirement age Retirement age Temporary difference, unused tax losses and unused tax credits [axis] Temporary difference, unused tax losses and unused tax credits [axis] Purchase of intangible assets Purchase of intangible assets, classified as investing activities Payment for purchase of intangible assets Financial assets Financial assets - non-current Total non-current financial assets Non-current financial assets Earnings per share [text block] Schedule of Loss Per Share Equity Ending balance Beginning balance Total Equity Basic earnings per share [abstract] Basic Loss per share Cash outflow for leases Lease payments for the period Defined benefit plans [member] Defined benefit plans [member] Loss before tax Profit (loss) before tax Accounting loss before income tax Loss before tax for the period Accrued G&A expense Accrued G&A expense current. Accrued General And Administrative Expense Current Disclosure of operating segments [line items] Disclosure Of Operating Segments [Line Items] Maturity of group reportable losses. Maturity Of Group Reportable Losses [Line Items] Maturity Of Group Reportable Losses [Line Items]