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Preferred A-2 And B Shares Directors and Senior Managers Shareholdings and Share Incentive awards [Table] Directors and Senior Managers Shareholdings and Share Incentive awards [Table] Directors and Senior Managers Shareholdings and Share Incentive awards Earnings/(Loss) per Share Disclosure of earnings per share [text block] Statement of changes in equity [abstract] Equity Value Equity Value, Measurement Input [Member] Equity Value, Measurement Input Sale of Future Royalties Liability Disclosure of financial liabilities [text block] Common Ordinary shares [member] Balance at beginning of period Balance at end of period Financial liabilities Financial liabilities, at fair value Schedule of Changes in Equity Classified Non-controlling Ownership Interests in Subsidiaries Disclosure of interests in subsidiaries [text block] Disclosure of associates [table] Disclosure of associates [table] Investments held at fair value Beginning balance Ending balance Non-current financial assets at fair 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instruments exercised or vested in share-based payment arrangement Disclosure of associates [Line Items] Disclosure of associates [Line Items] Disclosure of associates Investment, Name [Domain] Investment, Name [Domain] Total minimum liquidation preference Minimum liquidation preference Minimum liquidation preference Dr John LaMattina (individually) Dr John LaMattina (individually) [Member] Dr John LaMattina (individually) Number of shares acquired per share (in euro per share) Number Of Shares, Acquired, Per Share Number Of Shares, Acquired, Per Share Stock options Stock Options [Member] Stock Options Total non-current liabilities Non-current liabilities Payments in respect of developmental milestones Estimated financial effect of contingent liabilities Other financial assets Restricted cash and cash equivalents Effect of shares issued & treasury shares purchased and cancelled (in shares) Dilutive Effect Of All Instruments On Weighted Average Number Of Ordinary Shares, Including 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awards Share based liabilty awards [Member] Share based liabilty awards Basis of accounting Description Of Accounting Policy For Basis Of Presentation [Policy Text Block] Description Of Accounting Policy For Basis Of Presentation Gelesis Gelesis [Member] Gelesis Liabilities Liabilities [abstract] Short-term loan to associate Cash Receipts From Repayment Of Current Receivables Due From Associates, Classified As Investing Activities Cash Receipts From Repayment Of Current Receivables Due From Associates, Classified As Investing Activities Changes in the value of subsidiary preferred shares [Line Items] Changes in the value of subsidiary preferred shares [Line Items] Changes in the value of subsidiary preferred shares Consolidated cash, cash equivalents and short-term investments Cash And Cash Equivalents, And Short-term Investments Cash And Cash Equivalents, And Short-term Investments Disclosure of financial liabilities [table] Disclosure of financial liabilities [table] Taxation 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segments [member] Performance based RSU Performance based RSU [Member] Performance based RSU Statement Of Cash Flows [Line Items] Statement Of Cash Flows [Line Items] Statement Of Cash Flows [Line Items] Number of RSUs held (in shares) Number of other equity instruments outstanding in share-based payment arrangement Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure of terms and conditions of share-based payment arrangement [table] Statement of changes in equity [line items] Statement of changes in equity [line items] Investment in convertible notes and warrants from associates Purchase Of Convertible Notes And Warrants From Associates, Classified As Investing Activities Purchase Of Convertible Notes And Warrants From Associates, Classified As Investing Activities Level 2 Level 2 of fair value hierarchy [member] Statement of cash flows [abstract] Royalty Pharma Royalty Pharma [Member] Royalty Pharma Payables to related parties Payables to related parties Expiration of share options in subsidiary Decrease In Non-controlling From Expiration Of Share Options In Subsidiary Decrease In Non-controlling From Expiration Of Share Options In Subsidiary Unsecured promissory note Unsecured Promissory Note Receivable [Member] Unsecured Promissory Note Receivable Level 1 Level 1 of fair value hierarchy [member] Interest received Interest received, classified as operating activities Exercise of stock options (in shares) Increase (decrease) in number of ordinary shares issued Segments Segments [domain] Segment Information [Abstract] Segment Information [Abstract] Assets Assets [abstract] Lease liabilities (including current potion) Lease liabilities Available Funds Statement of financial position [abstract] Disclosure of financial assets [line items] Disclosure of financial assets [line items] Schedule of Subsidiary Preferred Shares, Minimum Liquidation Preference Summary of Minimum liquidation preference [Table Text Block] Summary of Minimum 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granted in share-based payment arrangement (in shares) Number of share options granted in share-based payment arrangement Balance as of June 30, 2024 before allocation of equity method loss to long-term interest ("LTI") Non-current Financial Assets At Fair Value Through Profit Or Loss, Before Allocation Of Equity Method Loss Non-current Financial Assets At Fair Value Through Profit Or Loss, Before Allocation Of Equity Method Loss Repurchase and cancellation of ordinary shares from Tender Offer (in shares) Repurchase And Cancellation Of Shares Repurchase And Cancellation Of Shares Gains (losses) on change in fair value of equity investments loss on change in fair value Gains (Losses) On Change In Fair Value Of Equity Investments Gains (Losses) On Change In Fair Value Of Equity Investments Net cash used in operating activities Cash flows from (used in) operating activities Equity-settled share-based awards expense Increase (decrease) through share-based payment transactions, equity Unobservable inputs [axis] Unobservable inputs [axis] Number of shares acquired Number Of Shares, Acquired Number Of Shares, Acquired Adjustments to reconcile income/(loss) for the period to net cash used in operating activities: Adjustments to reconcile profit (loss) [abstract] Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] Investments in associates accounted for using equity method Investments in associates accounted for using equity method All Subsidiaries All Subsidiaries [Member] All Subsidiaries Expected volatility Expected volatility, share options granted Schedule of Earnings/(Loss) per Share Schedule of Earnings per Share [Table Text Block] Schedule of Earnings per Share Non-Controlling Interest Disclosure of non-controlling interests [text block] Value of shares authorized to be repurchased Stock Repurchase Program, Shares Authorized to be Repurchased Stock Repurchase Program, Shares Authorized to be Repurchased Investment in Notes from Associates [Abstract] Investment in Notes from Associates [Abstract] Investment in Notes from Associates Finance (income)/costs, net Adjustments For Finance Costs (Income) Adjustments For Finance Costs (Income) Dr Raju Kucherlapati Dr Raju Kucherlapati [Member] Dr Raju Kucherlapati Percentage of royalties received above annual threshold Royalty Agreement, Percentage Of Royalties Received Above Annual Threshold Sale Of Future Royalties Liability, Percentage Of Royalties Received Above Annual Threshold Reduced amount Investments In Associates, Reduction Investments In Associates, Reduction Right of use asset, net Right of use asset, net Right-of-use assets Total liabilities Total liabilities Liabilities Financial Instruments Disclosure of financial instruments [text block] New Standards and Interpretations Disclosure of expected impact of initial application of new standards or interpretations [text block] Beginning balance number of shares outstanding (in 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unobservable input, assets Settlement of liability (in shares) Liabilities From Share-Based Payment Transactions, Share Amount Liabilities From Share-Based Payment Transactions, Share Amount Number of options held (in shares) Number of Options held Number of Options held Subsidiary Preferred Shares [Abstract] Subsidiary Preferred Shares [Abstract] Subsidiary Preferred Shares [Abstract] Share-based Payments Table [Line Items] Share-based Payments Table [Line Items] Share-based Payments Table Maximum Maximum [Member] Schedule of Changes in the Value of Subsidiary Preferred Shares Changes in the value of subsidiary preferred shares [Table Text Block] Changes in the value of subsidiary preferred shares Cash in deconsolidated subsidiary Cash Disclosure of financial liabilities [line items] Disclosure of financial liabilities [line items] Segment consolidation items [axis] Segment consolidation items [axis] Related parties Total for all related parties [member] Volatility Historical volatility for shares, measurement input [member] Subsidiary preferred shares Subsidiary Preferred Shares [Member] Subsidiary Preferred Shares Bottom of range Bottom of range [member] Schedule of Investments Held at Fair Value Summary Of Investments Held At Fair Value [Table Text Block] Summary Of Investments Held At Fair Value Associates Total for all associates [member] Business Or Sourcing Company [Domain] Business Or Sourcing Company [Domain] Business Or Sourcing Company [Domain] Current Fiscal Year End Date Current Fiscal Year End Date Income taxes, net Adjustments for income tax expense Convertible Promissory Note Convertible Promissory Note [Member] Convertible Promissory Note Statistical Measurement [Axis] Statistical Measurement [Axis] Segment Information Disclosure of entity's operating segments [text block] Controlled founded entities Controlled Founded Entities Controlled Founded Entities [Member] Controlled Founded Entities Finance income Total finance income Finance income Changes in the value of subsidiary preferred shares [Table] Changes in the value of subsidiary preferred shares [Table] Changes in the value of subsidiary preferred shares [Table] Material Accounting policies Material Accounting Policies [Policy Text Block] Material Accounting Policies Other non-current assets Other non-current assets Financial instruments, class Classes of financial instruments [domain] Short-term note from associate Current receivables due from associates Income/(loss) attributable to: Profit (loss), attributable to [abstract] Business combinations [axis] Business combinations [axis] Investment, Name [Axis] Investment, Name [Axis] Interest income from financial assets Interest Income From Financial Assets Interest Income From Financial Assets Acquisition of net asset Acquisition Of Net Asset Acquisition Of Net Asset Schedule of Key Management Personnel Compensation Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [text block] Schedule of Fair Value Measurement and Classification Disclosure of fair value measurement [text block] Subsidiary Preferred Shares Disclosure of Subsidiary Preferred Shares [Text Block] Disclosure of Subsidiary Preferred Shares Non-Controlling Interests [Abstract] Non-Controlling Interests [Abstract] Non-Controlling Interests [Abstract] Counterparty Name [Domain] Counterparty Name [Domain] Termination Benefits Key management personnel compensation, termination benefits Post-employment benefits Key management personnel compensation, post-employment benefits Impairment of fixed assets Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss Receipt of cash from sale of future royalties Proceeds From Sale Of Future Royalties Proceeds From Sale Of Future Royalties Series A-2 Preferred Shares Series A-2 Preferred Shares [Member] Series A-2 Preferred Shares Dr Robert Langer Dr Robert Langer [Member] Dr Robert Langer Business combination, share price paid (in dollars per share) Business Combination, Share Price Business Combination, Share Price Sale Of Future Royalties Liability [Table] Sale Of Future Royalties Liability [Table] Sale Of Future Royalties Liability [Table] Subsidiary Preferred Shares [Table] Subsidiary Preferred Shares [Table] Subsidiary Preferred Shares [Table] Financial assets Balance at beginning of period Balance at end of period Financial assets, at fair value Number of entities established Number Of Entities Established Number Of Entities Established (Accumulated deficit)/Retained earnings Retained earnings Schedule of Share-Based Payment Expense as Reflected in the Consolidated Statement of Income/(Loss) Share-based Payment Expense Table [Text Block] Share-based Payment Expense Table Jefferies International Limited Jefferies International Limited [Member] Jefferies International Limited Equity - Acquired Share capital PureTech LLC [Table] Equity - Acquired Share capital PureTech LLC [Table] Equity - Acquired Share capital PureTech LLC [Table] Gain on deconsolidation of subsidiary Adjustments for gain (loss) on disposal of investments in subsidiaries, joint ventures and associates Intangible assets, net Intangible assets other than goodwill Carrying Amount Carrying amount [member] Disclosure of terms and conditions of share-based payment arrangement [line items] Disclosure of terms and conditions of share-based payment arrangement [line items] Classes of financial assets [axis] Classes of financial assets [axis] Consolidated cash, cash equivalents and short-term investments Assets (liabilities) Seaport Therapeutics Seaport Therapeutics [Member] Seaport Therapeutics Classes of share capital [axis] Classes of share capital [axis] Gain realised on sale of investments Gains on disposals of investments 2024 Equity Incentive Plan 2024 Equity Incentive Plan [Member] 2024 Equity Incentive Plan Entrega Entrega [Member] Entrega Aggregated number of shares repurchased under share repurchase program (in shares) Stock Repurchase Program, Aggregated Number Of Shares Repurchased Stock Repurchase Program, Aggregated Number Of Shares Repurchased Non-current liabilities Non-current liabilities [abstract] Schedule of Changes in Assets, Level 3 Fair Value, Investments Held at Fair Value Disclosure of changes in assets, level 3 fair value - investments held at fair value [Table Text Block] Disclosure of changes in assets, level 3 fair value - investments held at fair value Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] Current liabilities Current liabilities [abstract] Share capital Issued capital Investment in associates – equity method Investments in associates reported in separate financial statements Share-based payment arrangements Types of share-based payment arrangements [domain] Financial Instruments [Abstract] Financial Instruments [Abstract] Financial Instruments [Abstract] Comprehensive income/(loss) attributable to: Comprehensive income attributable to [abstract] Changes in operating assets and liabilities: Changes in operating assets and liabilities [Abstract] Changes in operating assets and liabilities Number of days after debt incurred from a certain investor Debt Instrument, Payment Term, Number Of Days After Debt Incurred From A Certain Investor Debt Instrument, Payment Term, Number Of Days After Debt Incurred From A Certain Investor Entity's total for subsidiaries Subsidiaries [domain] Total parent equity Equity attributable to owners of parent [member] Weighted average ordinary shares for diluted EPS (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Note receivable Note Receivable [Member] Note Receivable Class B common Class B Common [Member] Class B Common Equity method loss Share of profit (loss) of associates accounted for using equity method Total assets Cash and cash equivalents Assets Share-based Payment Expense Category [Axis] Share-based Payment Expense Category [Axis] Share-based Payment Expense Category Interest paid Interest paid, classified as operating activities Repurchase and cancellation of ordinary shares from Tender Offer Repurchase and cancellation of shares, amount Repurchase And Cancellation Of Shares, Amount Repurchase And Cancellation Of Shares, Amount Denominator: Denominator [Abstract] Denominator Proceeds from the issuance of shares and subsidiary preferred shares Proceeds from issuing shares New Standards and Interpretations Not Yet Adopted [Abstract] New Standards and Interpretations Not Yet Adopted [Abstract] Deferred revenue Adjustments for increase decrease In deferred revenue Adjustments for increase decrease In deferred revenue Legal Entity [Axis] Legal Entity [Axis] Sale Of Future Royalties Liability [Line Items] Sale Of Future Royalties Liability [Line Items] Sale Of Future Royalties Liability [Line Items] Receivables due from related parties Receivables due from related parties Number of tranches Stock Repurchase Program, Number Of Tranches Stock Repurchase Program, Number Of Tranches Deferred tax assets Deferred tax assets Market Backsolve Approach Leverage Monte Carlo Simulation Market Backsolve Approach Leverage Monte Carlo Simulation [Member] Market Backsolve Approach Leverage Monte Carlo Simulation Interest expense on other borrowings Interest expense on borrowings Annual threshold, amount Royalty Agreement, Annual Threshold Royalty Payment Made To Counterparty Royalty Agreement, Annual Threshold Royalty Payment Made To Counterparty Value at issuance Value at Issuance Value at Issuance Equity-accounted associate – share of other comprehensive income (loss) Gains (losses) on exchange differences on translation of foreign operations, before tax Financial assets, class Classes of financial assets [domain] Investments Held at Fair Value Disclosure of Investments Held at Fair Value [Text Block] Disclosure of Investments Held at Fair Value Deconsolidation of Subsidiary Increase (decrease) through change in equity of subsidiaries, equity Non-controlling interests Profit (loss), attributable to non-controlling interests Wholly-Owned Programs Wholly-owned Programs [Member] Wholly-owned Programs Proceeds from maturity of short-term investments Proceeds from sales or maturity of financial instruments, classified as investing activities Time to Liquidity Time to Liquidity, measurement input [Member] Time to Liquidity, measurement input Deferred revenue Current government grants Eligibility to receive additional payment amount (up to) Royalties Liabilities, Eligibility To Receive Additional Royalty Payment, Amount Royalties Liabilities, Eligibility To Receive Additional Royalty Payment, Amount Preferred shares Total subsidiary preferred share balance Beginning balance Ending balance Preferred Share Liability Preferred Share Liability Other reserve Other reserves [member] Key management personnel compensation Total Key management personnel compensation Ranges Range [domain] Equity method loss recorded against LTI Gain (Loss) On Equity Method Investment Gain (Loss) On Equity Method Investment Related party transactions [abstract] Related party transactions [abstract] Other comprehensive income/(loss): Other comprehensive income [abstract] Basic earnings/(loss) per share (in dollars per share) Basic earnings/(loss) per ordinary share (in dollars per share) Basic earnings (loss) per share Disclosure of interests in Subsidiaries [Table] Disclosure of interests in Subsidiaries [Table] Disclosure of interests in Subsidiaries [Table] Disclosure of associates [line items] Disclosure of associates [line items] Directors and Senior Managers Shareholdings and Share Incentive awards [Line Items] Directors and Senior Managers Shareholdings and Share Incentive awards [Line Items] Directors and Senior Managers Shareholdings and Share Incentive awards Schedule of Aggregation of Subsidiaries with Material Non-controlling Interests Before Intra-group Eliminations Schedule of summary of aggregation of subsidiaries with material non-controlling interests before intra-group eliminations [Table Text Block] Schedule of summary of aggregation of subsidiaries with material non-controlling interests before intra-group eliminations Financial liabilities, class Classes of financial liabilities [domain] Proceeds from group Proceeds From Group Proceeds From Group Minimum Minimum [Member] Supplemental disclosure of non-cash investment and financing activities: Supplemental disclosure of non-cash investment and financing activities [Abstract] Supplemental disclosure of non-cash investment and financing activities Cash flows from financing activities: Cash flows from (used in) financing activities [abstract] Trade payables Current trade payables Merger reserve Merger reserve Income/(loss) for the period Net income/(loss) Income/(loss) for the period Profit (loss) Prepaid expenses Adjustments for decrease (increase) in other current assets Senior Managers Senior Managers [Member] Senior Managers Operating expenses: Operating Expense [Abstract] Operating Expense Other Financial Assets Disclosure of other assets [text block] Treasury Shares Treasury shares [member] Share capital Classes of share capital [domain] Akili (Common) Akili [Member] Akili Exercise price of warrants (in usd per share) Exercise Price of Warrants Exercise Price of Warrants (Gain)/loss on disposal of assets Adjustments for gain (loss) on disposals, property, plant and equipment Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets Entity's total for associates Associates [domain] Consolidated Statement of Comprehensive Income/(Loss) Statement of comprehensive income [abstract] Number of options (in shares) Number of share options exercisable in share-based payment arrangement Commitments and Contingencies Disclosure of commitments and contingent liabilities [text block] Amounts received at closing Royalties Liabilities, Initial Payment Received At Closing Royalties Liabilities, Initial Payment Received At Closing Gain (loss) on change in fair value Gains (losses) on financial assets at fair value through profit or loss Schedule of Terms and Conditions of Share-Based Payment Arrangement Disclosure of terms and conditions of share-based payment arrangement [text block] Related party transactions [Table] Related party transactions [Table] Related party transactions Exercise price (GBP) (in GBP per share) Exercise price, share options granted Current liabilities from share based payment transactions Current Liabilities From Share based Payment Transactions Current Liabilities From Share based Payment Transactions Schedule of Changes in Financial Liabilities, Level 3 Fair Value, Subsidiary Preferred Shares Disclosure Of changes in Financial Liabilities, level 3 fair value - Subsidiary Preferred Shares and Convertible Notes [Table Text Block] Disclosure Of changes in Financial Liabilities, level 3 fair value - Subsidiary Preferred Shares and Convertible Notes Share premium Share premium [member] Fair value of warrants Fair Value Of Warrants Fair Value Of Warrants Diluted earnings/(loss) per share (in dollars per share) Diluted earnings/(loss) per ordinary share (in dollars per share) Diluted earnings (loss) per share Remuneration expense Directors' remuneration expense Merger reserve Merger reserve [member] Numerator: Numerator [Abstract] Numerator Finance income/(costs) – fair value accounting Total finance income/(costs) – fair value accounting Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, liabilities At fair value At fair value [member] Share-based Payment Expense [Abstract] Share-based Payments [Abstract] Share-based Payments [Abstract] General Information Disclosure of material accounting policy information [text block] Convertible note, percentage of equity price trigger Debt Instrument, Convertible, Percentage Of Equity Price Trigger Debt Instrument, Convertible, Percentage Of Equity Price Trigger Ownership interest Ownership Interest Ownership Interest Purchase of intangible assets not yet paid in cash Purchase Of Intangible Assets But Not Yet Paid Purchase Of Intangible Assets But Not Yet Paid Sale of Karuna shares Sales, fair value measurement, assets Appeering Appeering [Member] Appeering Number of business days following the consummation of a qualified financing Current Receivables Due From Associates, Term, Number Of Business Days Following The Consummation Of A Qualified Financing Current Receivables Due From Associates, Term, Number Of Business Days Following The Consummation Of A Qualified Financing Disclosure of operating segments [line items] Disclosure of operating segments [line items] Related party transactions [Line Items] Related party transactions [Line Items] Related party transactions Proceeds from issue of convertible notes Proceeds from issue of convertible notes Proceeds from issue of convertible notes (Gain)/loss on investments in notes from associates Adjustments For Gains (Losses) On Change In Fair Value Of Note Receivable Due From Associates Adjustments For Gains (Losses) On Change In Fair Value Of Note Receivable Due From Associates Share-based payment expense Expense from share-based payment transactions with parties other than employees Operating income/(loss) Profit (loss) from operating activities Income taxes paid Income taxes paid (refund), classified as operating activities Finance costs – contractual Total finance cost – contractual Finance costs Related Parties Transactions Disclosure of transactions between related parties [text block] Convertible preferred shares held at fair value Financial Investments, Gain (Loss) Recognised Through Profit (Loss) When 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From Investors Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, assets Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, assets Trade and Other Payables Disclosure of trade and other payables [text block] Gain/(loss) on investments held at fair value Investment retained in deconsolidated subsidiary Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets Proceeds from sale of property and equipment Proceeds from sales of property, plant and equipment, classified as investing activities Liability for share-based awards Liabilities from share-based payment transactions Equity Equity [abstract] Total current assets Current assets Preferred Preference shares [member] Entity's total for business combinations [member] Business combinations [domain] Deconsolidated former subsidiary operating companies Deconsolidated former Subsidiary Operating Companies [Member] Deconsolidated former Subsidiary Operating Companies Realized gain/(loss) on sale of investments Gains (losses) on disposals of investments Number of other equity instruments granted in share-based payment arrangement Total RSUs (in shares) Number of other equity instruments granted in share-based payment arrangement Subsequent Events Disclosure of events after reporting period [text block] Finance Income/(Costs), net Disclosure of finance cost [text block] Nonexecutive Directors Nonexecutive Directors [Member] Nonexecutive Directors Proportion of ownership interest in investee (as a percent) Proportion of ownership interest in investee Proportion of ownership interest in investee Cash derecognized upon loss of control over subsidiary (see table below) Cash In Deconsolidated Subsidiary Cash In Deconsolidated Subsidiary Finance costs – non cash interest expense related to sale of future royalties Total finance costs - non cash interest expense related to sale of future royalties Non cash interest expense recognized Noncash Interest Expense, Royalty Liability Noncash Interest Expense, Royalty Liability Follica Follica [Member] Follica Expense (income) in respect of RSU liability award Expense (income) in respect of RSU liability award Expense (income) in respect of RSU liability award Equity and liabilities Equity and liabilities [abstract] Entity Central Index Key Entity Central Index Key Share of net income/(loss) of associates accounted for using the equity method Share of net income/(loss) of associates accounted for using the equity method Share of profit (loss) of associates and joint ventures accounted for using equity method Segments [axis] Segments [axis] Schedule of Finance Income (Cost) Disclosure of finance income (cost) [text block] Subsidiaries [axis] Subsidiaries [axis] Subsidiary preferred shares and warrants Issued capital, preference shares Purchase of treasury stock Payment To Purchase Treasury Stock Payment To Purchase Treasury Stock Potential securities excluded from diluted EPS calculation (in shares) Number of potential ordinary shares that are antidilutive in period presented Parent Company and Other Parent Company And Other [Member] Parent Company And Other Share-based awards expiration period Share-based Compensation Arrangement By Share-based Payment Award, Expiration Period Share-based Compensation Arrangement By Share-based Payment Award, Expiration Period Cash investment in associate Consideration Paid For Issuance Of Notes Receivable Consideration Paid For Issuance Of Notes Receivable Property and equipment, net Property, plant and equipment, net Property, plant and equipment Money Markets Loans to corporate entities [member] Share-based Payments Table [Table] Share-based Payments Table [Table] Share-based Payments Table [Table] Borrowings, interest rate Borrowings, interest rate Taxation [Abstract] Taxation [Abstract] Taxation [Abstract] Current assets Current assets [abstract] Additional number of shares authorized to purchase (in shares) Additional number of shares authorized to purchase Additional number of shares authorized to purchase Entity's total for related parties Categories of related parties [domain] Other Other current payables Entity's total for segment consolidation items Segment consolidation items [domain] Non-adjusting events after reporting period Non-adjusting events after reporting period [domain] Counterparty Name [Axis] Counterparty Name [Axis] Non-controlling interests Non-controlling interests [member] Settlement of restricted stock units Increase decrease through settlement of restricted stock units Increase decrease through settlement of restricted stock units Other reserve Other reserves Categories of related parties [axis] Categories of related parties [axis] Schedule of Fair Value Measurement Methods Disclosure Of Fair Value Measurement Methods [Table Text Block] Disclosure Of Fair Value Measurement Methods Stock repurchase program, purchase price per share Stock Repurchase Program, Purchase Price Per Share Stock Repurchase Program, Purchase Price Per Share Business Or Sourcing Company [Axis] Business Or Sourcing Company [Axis] Business Or Sourcing Company Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [table] Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, liabilities [table] Equity attributable to the owners of the Group Equity attributable to owners of parent Prepaid expenses Prepaid assets Current prepaid expenses Performance based RSUs Performance Based RSUs [Member] Performance Based RSUs Weighted average exercise price (in dollars per share) Weighted average exercise price of share options exercisable in share-based payment arrangement Number of common shares redeemable from each RSU (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Common Shares Redeemed Per Restricted Share Unit Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Common Shares Redeemed Per Restricted Share Unit Statement of changes in equity [table] Statement of changes in equity [table] Balance as of June 30, 2024 after allocation of equity method loss to LTI Financial Assets, At Fair Value, After Equity Method Investment Financial Assets, At Fair Value, After Equity Method Investment Cash and cash equivalents Cash and cash equivalents at beginning of year Cash and cash equivalents at end of period Cash and cash equivalents Statement Of Cash Flows [Table] Statement Of Cash Flows [Table] Statement Of Cash Flows [Table] Level 3 of fair value hierarchy Level 3 Level 3 of fair value hierarchy [member] Investments held at fair value [Abstract] Investments held at fair value [Abstract] Gain/(loss) on foreign currency exchange Gain Loss on foreign currency exchange in finance costs Gain Loss on foreign currency exchange in finance costs Vor Vor [Member] Vor Investments in Associates Investment in Notes from Associates Disclosure of associates [text block] Maturity [axis] Maturity [axis] Total equity and liabilities Equity and liabilities Unobservable inputs Unobservable inputs [domain] Issued ordinary shares at January 1 (in shares) Number of shares outstanding Number of shares outstanding Non-Controlling Interests [Table] Non-Controlling Interests [Table] Non-Controlling Interests Sonde Sonde [Member] Sonde Amendment Flag Amendment Flag Cash flows from operating activities Cash flows from (used in) operating activities [abstract] Entity Registrant Name Entity Registrant Name Interest expense on lease liability Interest expense on lease liabilities Performance share plan Performance Share Plan [Member] Performance Share Plan Income tax receivable Current tax assets, current Disclosure of non-adjusting events after reporting period [abstract] Convertible note receivable Convertible Note Receivable [Member] Convertible Note Receivable Total operating expense Operating expense Net finance income/(costs) Net finance income/(costs) Finance income (cost) Sensitivity range, decrease Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Period Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Period Contractual interest expense on notes payable Contractual Interest expense on notes Contractual Interest expense on notes Award settlement, price per share Share-Based Compensation Arrangement By Share-Based Payment Award, Award Settlement, Price Per Share Share-Based Compensation Arrangement By Share-Based Payment Award, Award Settlement, Price Per Share Subsidiary Preferred Shares Balances [Table] Subsidiary Preferred Shares Balances [Table] Subsidiary Preferred Shares Balances [Table] Schedule of Trade and Other Payables Schedule of Trade And Other Payables [Table Text Block] Schedule of Trade And Other Payables Convertible notes Convertible Notes [Member] Convertible Notes Aggregated time bands Maturity [domain] Tax benefit/(expense) Tax provision Tax expense (income) Schedule of Operating Segments Disclosure of operating segments [text block] Purchases of short-term investments Purchase of financial instruments, classified as investing activities Royalty Liabilities Royalty Liabilities Royalty Liabilities Senior secured convertible promissory note Senior Secured Convertible Promissory Note [Member] Senior Secured Convertible Promissory Note Risk-free interest rate Risk free interest rate, share options granted Other Increase (decrease) through other changes, equity Investments held at fair value [Table] Investments held at fair value [Table] Investments held at fair value Issuance of subsidiary preferred Shares Proceeds from issue of preference shares Investment in notes from associates Short-term note from associate [Member] Short-term note from associate Equity method loss recorded against LTI Share Of Profit (Loss) Accounted For Using Equity Method Share Of Profit (Loss) Accounted For Using Equity Method Summary of aggregation of subsidiaries with material non-controlling interests before intra-group eliminations [Table] Summary of aggregation of subsidiaries with material non-controlling interests before intra-group eliminations [Table] Summary of aggregation of subsidiaries with material non-controlling interests before intra-group eliminations Subsidiaries with material non-controlling interests Subsidiaries with material non-controlling interests [member] Share price at grant date Weighted average share price, share options granted Liabilities from share based payment transactions, performance and market conditions met Liabilities From Share based Payment Transactions, performance and market conditions met Liabilities From Share based Payment Transactions, performance and market conditions met Share-based payment expense Expense from share-based payment transactions with employees Sensitivity range, increase Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Period Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Period Investment in Associates [Abstract] Investment in Associates [Abstract] Investment in Associates [Abstract] Profit or loss [abstract] Vedanta and Sonde Vedanta And Sonde [Member] Vedanta And Sonde Treasury stock Treasury shares Repurchase of ordinary shares Issuance of warrants Issuance of warrants Trade and other receivables Adjustments for decrease (increase) in trade and other receivables Non-Controlling Interests [Line Items] Non-Controlling Interests [Line Items] Non-Controlling Interests Weighted average ordinary shares for basic EPS (in shares) Weighted average number of ordinary shares used in calculating basic earnings per share Minimum liquidation preference [Table] Minimum liquidation preference [Table] Minimum liquidation preference [Table] Gain/(loss) from change in fair value of warrant liability Gain/(Loss) from change in fair value of warrant liability Gain/(Loss) from change in fair value of warrant liability Short-term employee benefits Key management personnel compensation, short-term employee benefits Exercise of stock options Proceeds from exercise of options Top of range Top of range [member] Taxation [Table] Taxation [Table] Taxation Non-controlling interests Comprehensive income, attributable to non-controlling interests Market Backsolve & OPM Market Backsolve & OPM [Member] Market Backsolve & OPM Lease liability, current Current lease liabilities Purchase of Treasury stock Purchase of treasury shares Expected dividend yield Expected dividend, share options granted Share-based payment expense Key management personnel compensation, share-based payment Share premium Share premium Research and development expenses Research and development expenses Research and development expense Valuation techniques Valuation techniques used in fair value measurement [domain] Changes in the value of subsidiary preferred shares [Roll Forward] Changes in the value of subsidiary preferred shares [Roll Forward] Changes in the value of subsidiary preferred shares Contract revenue Revenue from contracts with customers Share-based payment arrangements, percentage of common shares outstanding Share-based Payment Arrangements, Authorized Amount, Percentage of Common Shares Outstanding Share-based Payment Arrangements, Authorized Amount, Percentage of Common Shares Outstanding Income/(loss) before taxes Profit (loss) before tax Schedule of Sale of Future Royalties Liability Schedule Of Royalty Liabilities [Table Text Block] Schedule Of Royalty Liabilities Non-cancellable contractual commitments Contractual capital commitments Establishment of new entities Establishment Of New Entities [Member] Establishment Of New Entities Gain/(loss) from change in fair value of preferred shares Gain/(Loss) from change in fair value of preferred shares Gain/(Loss) from change in fair value of preferred shares Schedule of Subsidiary Preferred Share Balances Summary of Subsidiary Preferred Shares Balances [Table Text Block] Summary of Subsidiary Preferred Shares Balances General and administrative expenses General and administrative expenses General and administrative expenses General and administrative expense Measurement [axis] Measurement [axis] Increase/(decrease) in value of preferred shares measured at fair value Change in fair value Change in fair value Change in fair value Accounting policies, changes in accounting estimates and errors [Abstract] Accounting Policies 1 [Abstract] Accounting Policies 1 Entity File Number Entity File Number Share Capital Issued capital [member] Purchase of property and equipment Purchase of property, plant and equipment, classified as investing activities Trade and other payables [abstract] Financial Instruments - Fair value Measurement and Classification [Line Items] Financial Instruments - Fair value Measurement and Classification [Line Items] Financial Instruments - Fair value Measurement and Classification Total share-based payments expense category Total Share-based Payments Expense Category [Member] Total Share-based Payments Expense Category Exercise price range (in dollars per share) Exercise price of outstanding share options Document Period End Date Document Period End Date Effect of dilutive shares (in shares) Dilutive effect of share options on weighted average number of ordinary shares Equity Disclosure of Equity [Text Block] Disclosure of Equity (Gain)/loss on investment held at fair value Adjustments for fair value losses (gains) Share-based compensation expense Adjustments for share-based payments Retained earnings/ (accumulated deficit) Retained earnings [member] Other Other inflows (outflows) of cash, classified as financing activities Realized gain on sale of investments Adjustments for losses (gains) on disposal of non-current assets Income/(loss) attributable to the owners of the Group, basic Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Finance costs Finance costs [Abstract] Finance costs Issuance of new preferred shares Issue of equity Proportion of ownership interests held by non-controlling interests Proportion of ownership interests held by non-controlling interests Other assets and liabilities, net Other Assets And Liabilities, Net Other Assets And Liabilities, Net Total non-current assets Non-current assets Total comprehensive income/(loss) for the period Total comprehensive income/(loss) for the year Share of comprehensive income (loss) Comprehensive income Schedule of Directors’ and Senior Managers’ Shareholdings and Share Incentive Awards Disclosure Of Information About Shareholdings of Key Management Personnel Explanatory [Table Text Block] Disclosure Of Information About Shareholdings of Key Management Personnel Explanatory Total equity Equity at beginning of period Equity at end of period Total equity Equity Interest income on sublease receivable Interest Income On Sublease Receivable Interest Income On Sublease Receivable Sublease receivable Finance lease receivables Finance income Finance income [Abstract] Finance income Number of reportable segments Number Of Reportable Segment Number Of Reportable Segment Translation reserve Reserve of exchange differences on translation [member] Percentage of reasonably possible decrease in unobservable input, assets Percentage of reasonably possible decrease in unobservable input, assets Number of warrants (in shares) Warrants, Number of Securities Called by Warrants Warrants, Number of Securities Called by Warrants Stock incentive plan Stock Incentive Plan [Member] Stock Incentive Plan Total revenue Total revenue Revenue Investments held at fair value [Line Items] Investments held at fair value [Line Items] Investments held at fair value Other income/(expense): Other income/(expense) [Abstract] Other income/(expense) Investments held at fair value Investments held at fair value [Member] Investments held at fair value Net increase (decrease) in cash and cash equivalents Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Financial Instruments - Fair value Measurement and Classification [Table] Financial Instruments - Fair value Measurement and Classification [Table] Financial Instruments - Fair value Measurement and Classification [Table] Share-based Payments Disclosure of share-based payment arrangements [text block] Settlement of restricted stock units (in shares) Number Of Ordinary Shares Issued To Settle Share-based Payment Awards Number Of Ordinary Shares Issued To Settle Share-based Payment Awards Finance Cost Net [Abstract] Finance Cost Net [Abstract] Percent voting rights of the company Percent voting rights of the Company Percent voting rights of the Company Current receivable due from associates, interest rate Current Receivable Due From Associates, Interest Rate Current Receivable Due From Associates, Interest Rate Gain – change in fair value through profit and loss Gain/(loss) on changes in fair value Gains (losses) recognised in profit or loss excluding exchange differences, fair value measurement, assets Subsidiary Preferred Shares [Line Items] Subsidiary Preferred Shares [Line Items] Subsidiary Preferred Shares Classes of financial instruments [axis] Classes of financial instruments [axis] Aggregate principal amount Notional amount Taxation [Line Items] Taxation [Line Items] Taxation Income taxes payable Current tax liabilities, current