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Percentage Of The Funds To Be Used For Research And Development Purpose Percentage of the funds to be used for research and development purpose Twenty Twenty Incentive Plan Twenty Twenty Incentive Plan [Member] Two Thousand And Twenty Incentive Plan [Member] Three To Four Year Service Period [Member] Three To Four Year Service Period [Member] Three To Four Year Service Period [Member] Statement [Line Items] Statement [Line Items] Business Combination [Domain] Service, Other [Member] Warrant Liability [Member] Warrant [Member] Warrant [Member] Entity Filer Category Variable Interest Entity Disclosure [Text Block] Variable Interest Entities Payments to Acquire Other Investments Cash paid for investments Common Stock, Value, Outstanding Common Stock, Value, Outstanding Annual license fee payable. Annual License Fee Payable Annual license fee payable PsyProtix [Member] PsyProtix [Member] PsyProtix [Member]. 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DemeRx NB Inc [Member] Cash & Money market funds Cash and Cash Equivalents, Fair Value Disclosure Proceeds from a related party convertible promissory note Proceeds from a related party convertible promissory note Non Cash Impact Of Stock Based Compensation Non Cash Impact Of Stock Based Compensation Non-cash impact of stock-based compensation Non-cash impact of stock-based compensation Reclassifications, Policy [Policy Text Block] Reclassifications, Policy [Policy Text Block] Reclassifications Valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Deferred Tax Assets, Valuation Allowance, Total Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent, Total U.S federal statuory tax rate, Percent Shares Issued, Price Per Share Share price Entheogenix Biosciences Inc. Member EntheogeniX Biosciences, Inc. [Member] Additional common shares public offering price Additional Stock Issued During Period, Shares Additional stock issued during period, shares Cash Received In Acquisition Of Beckley Psytech Limited Cash Received In Acquisition Of Beckley Psytech Limited Cash received in acquisition of Beckley Psytech Limited Termination Fee Amount Termination Fee Amount Terminatio Fee Cybersecurity Risk Management Third Party Engaged [Flag] Documents Incorporated By Reference TextBlock Documents Incorporated by Reference [Text Block] Galaxy NYC Based Multi Strategy Investment Firm [Member] Galaxy NYC based multi strategy investment firm. Milestone payments receivable. Milestone Payments Receivable Milestone payments, receivable InnarisBio [Member]. InnarisBio [Member] InnarisBio [Member] Goodwill, Total Goodwill Goodwill Goodwill, Balance at December 31, 2024 Goodwill, Balance at December 31, 2023 Effective income tax rate: Effective income tax rate: Effective Income Tax Rate Reconciliation, Percent Effective Tax Rate, Percent Two to four-year service period. Two to fouryear service period [Member] Stock options [Member] Income Taxes Paid Cash paid for taxes Cash paid for taxes Convertible Debt Securities [Member] 2020 Convertible Promissory Notes (Note 11) 2018 Convertible Promissory Notes Net income (loss) attributable to noncontrolling interests - preferred Net income (loss) attributable to noncontrolling interest preferred. 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Accrued Rent Two Thousand Twenty Three Term Loan Note One [Member] Two Thousand Twenty Three Term Loan Note One [Member] 2023 Term Loan Note One [Member] Subscription and Shareholders' Agreement [Member] Subscription and Shareholders' Agreement [Member] Other Investment Not Readily Marketable [Table] Variable Interest Entity [Table] 2023 Warrant [Member] Two Thousand Twenty Three Warrant [Member] Two Thousand Twenty Three Warrant [Member] Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercisable Weighted Average Exercise Price. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercisable Weighted Average Exercise Price Weighted- Average Exercise Price,Options exercisable First Tranche Funding [Member]. First Tranche Funding [Member] First Tranche Funding [Member] License Agreements. License Agreements [Table] Convertible notes receivables. Convertible Notes Receivables Notes receivable Share based compensation arrangement by share based payment award equity instruments other than options aggregate intrinsic value granted. Share based Compensation Arrangement By Share based Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Granted Aggregate Intrinsic Value,Granted Federal Tax Loss Carryforward Federal tax loss carryforward. U.S./Germany tax losses Noncontrolling Interest [Abstract] Debt instrument, interest rate Debt Instrument, Interest Rate During Period Investments Investments Deferred Tax Liabilities, Investments Related Party [Member] Related Party COMPASS [Member] COMPASS [Member] COMPASS [Member] Defined Contribution Plan [Text Block] Defined Contribution Plan RL-007 RL-007 Expenses [Member] RL-007 Expenses [Member] Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block] Summary of Employee Stock Ownership Plan (ESOP) Disclosures Property, Plant and Equipment [Line Items] Property and Equipment [Line Items] Company's common share Company's common share Receivables maturity description. 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Three to Five year service period [Member] Entity Voluntary Filers Entity Voluntary Filers Customer Concentration Risk [Member] Finite-Lived Intangible Asset, Expected Amortization, Year Two 2027 Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Revenue recognized upon performance obligation satisfied Beckley Psytech Escrow Agreement [Member] Beckley Psytech Escrow Agreement [Member] Business Combination, Contingent Consideration [Table Text Block] Fair value of Contingent Consideration liability Unaudited Pro Forma Summary of Operations [Member] Unaudited Pro Forma Summary of Operations [Member] Unaudited Pro Forma Summary of Operations [Member] Other Nonoperating Income (Expense), Total Other Nonoperating Income (Expense) Other income (expense), net Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Total Additional Paid in Capital Additional paid-in capital Deferred State and Local Income Tax Expense (Benefit) United States State & Local Subsequent Events [Abstract] IntelGenx Convertible Notes Receivable [Member] IntelGenx Convertible Notes Receivable [Member] IntelGenx Convertible Notes Receivable Cybersecurity Risk Management Positions or Committees Responsible [Flag] Discount Rate Discount rate discount rate Schedule of Other income (expense), net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Convertible Debt Issue Description Axis Convertible Debt Issue Description [Axis] Shares Issued for The Settlement of Beckley Psytechs Transaction Costs, Value Shares Issued for The Settlement of Beckley Psytechs Transaction Costs, Value Shares issued for the settlement of Beckley Psytech's transaction costs Atai Variable Interest Entity Axis ATAI Variable Interest Entity [Axis] Finite-Lived Intangible Asset, Expected Amortization, Year Three 2028 Provision for income taxes Income Tax Expense (Benefit) Benefit from (provision for) income taxes Total income tax (benefit) provision Effective Tax Rate Total income tax benefit (provision) Total income tax benefit (provision) Measurement Frequency [Axis] Other investments held at fair value Other Investments Other Investments, Total Gain on Settlement of Pre-Existing Contract Gain on Settlement of Pre-Existing Contract Gain on settlement of pre-existing contract VIE'S [Member] VIE'S [Member] Variable Interest Entity VIE's [Member] Drewings from Escrow Account Drewings from Escrow Account Drewings from Escrow Account Proceeds from Issuance of Common Stock Proceeds from issuance of common stock Common stock issuance price, cash Business Combination, Contingent Consideration, Type [Axis] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Summary of Fair Value Measurement Inputs and Valuation Techniques Entity Common Stock, Shares Outstanding Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Income tax reconciliation state income taxes net of federal tax benefit and valuation allowance Income tax reconciliation state income taxes net of federal tax benefit and valuation allowance. 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Details [Axis] Accrued interest Deposit Liabilities, Accrued Interest Recognify Stock Options [Member] Recognify stock options. Share Based Payment Arrangement Tranche One D [Member] Share Based Payment Arrangement Tranche One D [Member] Tranche 1D Assets Total assets Total assets Four to Five Year Service period. Four to Five Year Service period [Member] Property, Plant and Equipment [Table] United States State & Local Income Tax Paid, State and Local, after Refund Received Income Tax Paid, State and Local, after Refund Received, Total Weighted-Average Remaining Contractual Term (Years), Options exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Income Statement [Abstract] Income Statement [Abstract] Deferred purchase credit Deferred purchase credit Deferred purchase credit Accounting Policies Table. 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Agreement [Axis] Deferred Income Tax Expense (Benefit) Total deferred income tax (benefit) provision Weighted Average [Member] Sale of Stock, Number of Shares Issued in Transaction Number of share sold Losses from investments in equity method investees, net of tax Income losses from equity method investments. Income Losses From Equity Method Investments IntelGenx Investments Held at Fair Value [Member] IntelGenx Investments Held at Fair Value [Member] IntelGenx Investments Held at Fair Value Settlement of issuance of shares upon exercise of stock options, Shares Stock Issued During Period, Shares, New Issues Issuance of common shares, net of issuance costs ,Shares Cancellation Of Shares. Cancellation Of Shares [Member] Cancellation Of Shares [Member] Notes Receivable Percentage Notes Receivable Percentage Liquidity Event. Liquidity Event [Member] Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Number of options,Vested Number of options,Vested Variable Interest Entities and Voting Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Basic and Diluted Net Loss Per Share of Common Stock Policy Text Block Basic and Diluted Net Loss Per Share of Common Stock Policy Text Block Basic and Diluted Net Loss Per Share of Common Stock Accrued restructuring costs Accrued restructuring costs Accrued restructuring costs Business Combination [Abstract] Earnings Per Share, Diluted Diluted Earnings Per Share Pro forma diluted net loss per share Net loss per share attributable to AtaiBeckley Inc. shareholders - diluted Consulting agreement Consulting Agreement [Member] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Company's Reportable Segment Net Loss Crypto Asset, Fair Value Unit Crypto Asset, Fair Value Unit Digital assets at December 31, 2024 Digital assets at December 31, 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Five 2030 Crypto Asset, Addition Addition Title and Position [Domain] Beckley Psytech Limited [Member] Beckley Psytech Limited [Member] Beckley Psytech Limited [Member] Asset Acquisition [Axis] Less: Imputed interest Less: Imputed interest Receivable with Imputed Interest, Discount Property, plant, and equipment, useful life, term, description Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration] City Area Code DemeRx IB Promissory Note Agreement Promissory Note Agreement [Member] Promissory Note Agreement Member Total Assets Percentage Total Assets Percentage Total Assets Percentage Summary of grant date fair value Fair Value Option, Disclosures [Table Text Block] Business Combination, Consideration Transferred, Liabilities Incurred Estimated fair value of contingent consideration Convertible Promissory Notes And Derivative Liability Noncurrent, Related Party. Convertible Promissory Notes And Derivative Liability Noncurrent, Related Party Convertible promissory notes and derivative liability noncurrent, Related party Auditor Name Neuronasal Inc. Neuronasal Inc [Member] Neuronasal Inc [Member] Deposits Deposits, Total Deposited to an escrow account Vesting By Type. Vesting By Type [Domain] EMP-01 Expenses [Member] EMP-01 Expenses [Member] EMP-01 Short-Term Notes Receivable, Net Short-Term Notes Receivable, Net Short-term notes receivable, net Details. Details [Domain] Principal amount Debt Instrument, Face Amount Convertible promissory notes issued Leases Leases of Lessee Disclosure [Text Block] Intangible Assets, Finite-Lived, Policy [Policy Text Block] Intangible Assets Business Combination [Line Items] Mr Angermayer. Mr Angermayer [Member] Settlement Of Accounts Payable Settlement Of Accounts Payable Settlement of accounts payable Federal Loan Bank, Advance Federal Loan Bank, Advance Term loan advance Convertible Notes Receivable. Convertible Notes Receivable [Member] Convertible Notes Receivable [Member] Counterparty Name [Domain] Securities Purchase Agreement. Securities Purchase Agreement [Member] Securities Purchase Agreement [Member] Dividends, Cash Dividends, Cash, Total Cash dividends Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Segment Reporting Information [Line Items] Stock Issued During Period, Shares, Restricted Stock Award, Gross Issuance of shares upon restricted stock units vest, shares Qualified Financing Transaction [Member] Qualified Financing Transaction [Member] Lease Cost Total lease cost Lease, Cost Recognify Life Sciences Inc. Member Recognify Life Sciences, Inc. [Member] License Agreement Terms [Member] License Agreement Terms [Member] Indication Axis Indication [Axis] Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Schedule of Activity Related to the Company"s Digital Assets Crypto Asset, Activity [Table Text Block] Thereafter Operating Leases Future Minimum Payment Receivable Thereafter Operating Leases Future Minimum Payment Receivable Thereafter Underwriting Discount. 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[Member] Grant of an option shares vested for continued service Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Invyxis ESLA [Member] Invyxis ESLA [Member] Corporate Bond Securities [Member] Corporate Notes/Bonds Accrued external research and development expenses Accrued external research and development expenses current. Accrued External Research And Development Expenses Current Accrued payroll Operating Income (Loss) Loss from operations Germany Federal Ministry of Finance, Germany [Member] Retained Earnings [Member] Accumulated Deficit [Member] Entity Address, Country Business Combination, Contingent Consideration, Type [Domain] Intangible Assets, Current Definite-lived intangible assets Intangible assets Exchange Options. 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[Member] Change in fair value of assets and liabilities, net Change in fair value of assets and liabilities, net Change In Fair Value Of Assets And Liabilities, Net Change In Fair Value Of Assets And Liabilities, Net Debtor in Possession Loan [Member] Debtor in Possession Loan [Member] Debtor In Possession Loan [Member] Operating Lease, Weighted Average Discount Rate, Percent Operating Lease, Weighted Average Discount Rate, Percent More Than Fifty Percent [Member] More Than Fifty Percent Greater than 50% Non-current portion of lease liabilities Long-term operating lease liability Operating Lease, Liability, Noncurrent Fair Value, Inputs, Level 1 [Member] Level 1 Class of Stock [Line Items] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by financing activities Notes Payable Notes Payable, Total Promissory note TryptageniX-ATAI Stock Purchase Agreement [Member] TryptageniX-ATAI Stock Purchase Agreement [Member] TryptageniX-ATAI Stock Purchase Agreement [Member] Components of expenses related to leases is recorded on a straight-line basis over the lease term Lease, Cost [Table Text Block] Variable Interest Entity, Qualitative or Quantitative Information, Nature and Extent of Involvement Relationship Auditor Location Measurement Input, Value of Underlying [Member] Value Of Underlying [Member]. 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