100000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 100010 - Statement - Consolidated statement of operations link:presentationLink link:calculationLink link:definitionLink 100020 - Disclosure - Non-current assets held for sale - Summary of Assets and Liabilities of the Group Classified (Details) 2 link:presentationLink link:calculationLink link:definitionLink 100030 - Statement - Consolidated statement of comprehensive loss link:presentationLink link:calculationLink link:definitionLink 100040 - Statement - Consolidated statement of comprehensive loss 2 link:presentationLink link:calculationLink link:definitionLink 100050 - Statement - Consolidated statement of operations 2 link:presentationLink link:calculationLink link:definitionLink 100060 - Statement - Consolidated statement of financial position link:presentationLink link:calculationLink link:definitionLink 100070 - Statement - Consolidated statement of changes in equity link:presentationLink link:calculationLink link:definitionLink 100080 - Statement - Consolidated statement of cash flows link:presentationLink link:calculationLink link:definitionLink 100090 - Disclosure - Corporate information link:presentationLink link:calculationLink link:definitionLink 100100 - Disclosure - Summary of accounting policies link:presentationLink link:calculationLink link:definitionLink 100110 - Disclosure - Financial risk management link:presentationLink link:calculationLink link:definitionLink 100120 - Disclosure - Significant accounting judgments, estimates and assessments link:presentationLink link:calculationLink link:definitionLink 100130 - Disclosure - Segment information link:presentationLink link:calculationLink link:definitionLink 100140 - Disclosure - Depreciation Amortization and Impairment by Per Function link:presentationLink link:calculationLink link:definitionLink 100150 - Disclosure - Employee and Personnel Costs link:presentationLink link:calculationLink link:definitionLink 100160 - Disclosure - Share-based compensation link:presentationLink link:calculationLink link:definitionLink 100170 - Disclosure - Other Operating Income and (Expenses), Net link:presentationLink link:calculationLink link:definitionLink 100180 - Disclosure - Finance Income and Expenses link:presentationLink link:calculationLink link:definitionLink 100190 - Disclosure - Net Exchange Rate Differences link:presentationLink link:calculationLink link:definitionLink 100200 - Disclosure - Income tax link:presentationLink link:calculationLink link:definitionLink 100210 - Disclosure - Investments in subsidiaries link:presentationLink link:calculationLink link:definitionLink 100220 - Disclosure - Intangible assets link:presentationLink link:calculationLink link:definitionLink 100230 - Disclosure - Property, plant and equipment link:presentationLink link:calculationLink link:definitionLink 100240 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 100250 - Disclosure - Other non-current receivables link:presentationLink link:calculationLink link:definitionLink 100260 - Disclosure - Financial instruments per category link:presentationLink link:calculationLink link:definitionLink 100270 - Disclosure - Inventories link:presentationLink link:calculationLink link:definitionLink 100280 - Disclosure - Trade receivables link:presentationLink link:calculationLink link:definitionLink 100290 - Disclosure - Other current receivables link:presentationLink link:calculationLink link:definitionLink 100300 - Disclosure - Prepaid expenses link:presentationLink link:calculationLink link:definitionLink 100310 - Disclosure - Cash and cash equivalents link:presentationLink link:calculationLink link:definitionLink 100320 - Disclosure - Equity link:presentationLink link:calculationLink link:definitionLink 100330 - Disclosure - Liabilities to Credit Institutions link:presentationLink link:calculationLink link:definitionLink 100340 - Disclosure - Other non-current liabilities link:presentationLink link:calculationLink link:definitionLink 100350 - Disclosure - Provisions link:presentationLink link:calculationLink link:definitionLink 100360 - Disclosure - Convertible Notes link:presentationLink link:calculationLink link:definitionLink 100370 - Disclosure - Shareholder loans link:presentationLink link:calculationLink link:definitionLink 100380 - Disclosure - Other current liabilities link:presentationLink link:calculationLink link:definitionLink 100390 - Disclosure - Accrued expenses link:presentationLink link:calculationLink link:definitionLink 100400 - Disclosure - Related party disclosures link:presentationLink link:calculationLink link:definitionLink 100410 - Disclosure - Changes in liabilities attributable to financing activities link:presentationLink link:calculationLink link:definitionLink 100420 - Disclosure - Loss per share link:presentationLink link:calculationLink link:definitionLink 100430 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 100440 - Disclosure - Non-current Assets Held for Sale link:presentationLink link:calculationLink link:definitionLink 100450 - Disclosure - Events after the end of the reporting period link:presentationLink link:calculationLink link:definitionLink 100460 - Disclosure - Summary of accounting policies (Policies) link:presentationLink link:calculationLink link:definitionLink 100470 - Disclosure - Summary of accounting policies (Tables) link:presentationLink link:calculationLink link:definitionLink 100480 - Disclosure - Financial risk management (Tables) link:presentationLink link:calculationLink link:definitionLink 100490 - Disclosure - Segment information (Tables) link:presentationLink link:calculationLink link:definitionLink 100500 - Disclosure - Depreciation Amortization and Impairment by Per Function (Tables) link:presentationLink link:calculationLink link:definitionLink 100510 - Disclosure - Employee and Personnel Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 100520 - Disclosure - Share-based compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 100530 - Disclosure - Other Operating Income and (Expenses), Net (Tables) link:presentationLink link:calculationLink link:definitionLink 100540 - Disclosure - Finance income and expenses (Tables) link:presentationLink link:calculationLink link:definitionLink 100550 - Disclosure - Net Exchange Rate Differences (Tables) link:presentationLink link:calculationLink link:definitionLink 100560 - Disclosure - Income tax (Tables) link:presentationLink link:calculationLink link:definitionLink 100570 - Disclosure - Investments in subsidiaries (Tables) link:presentationLink link:calculationLink link:definitionLink 100580 - Disclosure - Intangible assets (Tables) link:presentationLink link:calculationLink link:definitionLink 100590 - Disclosure - Property, plant and equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 100600 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 100610 - Disclosure - Other non-current receivables (Tables) link:presentationLink link:calculationLink link:definitionLink 100620 - Disclosure - Financial instruments per category (Tables) link:presentationLink link:calculationLink link:definitionLink 100630 - Disclosure - Inventories (Tables) link:presentationLink link:calculationLink link:definitionLink 100640 - Disclosure - Trade receivables (Tables) link:presentationLink link:calculationLink link:definitionLink 100650 - Disclosure - Other Current Receivables (Tables) link:presentationLink link:calculationLink link:definitionLink 100660 - Disclosure - Prepaid expenses (Tables) link:presentationLink link:calculationLink link:definitionLink 100670 - Disclosure - Cash and cash equivalents (Tables) link:presentationLink link:calculationLink link:definitionLink 100680 - Disclosure - Liabilities to Credit Institutions (Tables) link:presentationLink link:calculationLink link:definitionLink 100690 - Disclosure - Other non-current liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 100700 - Disclosure - Provisions (Tables) link:presentationLink link:calculationLink link:definitionLink 100710 - Disclosure - Other current liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 100720 - Disclosure - Accrued expenses (Tables) link:presentationLink link:calculationLink link:definitionLink 100730 - Disclosure - Changes in liabilities attributable to financing activities (Tables) link:presentationLink link:calculationLink link:definitionLink 100740 - Disclosure - Loss per share (Tables) link:presentationLink link:calculationLink link:definitionLink 100750 - Disclosure - Non-current Assets Held for Sale (Tables) link:presentationLink link:calculationLink link:definitionLink 100760 - Disclosure - Summary of Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100770 - Disclosure - Summary of Accounting Policies - Estimated Useful Life of Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 100780 - Disclosure - Financial Risk Management - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100790 - Disclosure - Financial Risk Management - Summary of Exposure to Foreign Currency Risk (Details) link:presentationLink link:calculationLink link:definitionLink 100800 - Disclosure - Financial Risk Management - Summary of Risk Exposure in Foreign Currencies (Details) link:presentationLink link:calculationLink link:definitionLink 100810 - Disclosure - Financial Risk Management - Summary of Risk Exposure in Foreign Currencies (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 100820 - Disclosure - Financial Risk Management - Sensitivity Analysis of Interest Rate (Details) link:presentationLink link:calculationLink link:definitionLink 100830 - Disclosure - Financial Risk Management - Sensitivity Analysis of Interest Rate (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 100840 - Disclosure - Financial Risk Management - Sensitivity to Changes In Fair Value From Short-term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 100850 - Disclosure - Financial Risk Management - Sensitivity to Changes In Fair Value From Short-term Investments (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 100860 - Disclosure - Financial Risk Management - Summary of Aging of Groups Trade Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 100870 - Disclosure - Financial Risk Management - Summary of Allowance for Expected Credit Losses of Trade Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 100880 - Disclosure - Financial Risk Management - Summary of Financial Liabilities into Maturity Groupings based on Contractual Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 100890 - Disclosure - Significant Accounting Judgments Estimates and Assessments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100900 - Disclosure - Segment Information - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100910 - Disclosure - Segment Information - Summary of Revenue Adjusted EBITDA and EBITDA (Details) link:presentationLink link:calculationLink link:definitionLink 100920 - Disclosure - Segment Information - Summary of Revenue Adjusted EBITDA and EBITDA (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 100930 - Disclosure - Segment Information - Summary of Non-current Assets by Country (Details) link:presentationLink link:calculationLink link:definitionLink 100940 - Disclosure - Segment Information - Summary of Revenue from External Customers (Details) link:presentationLink link:calculationLink link:definitionLink 100950 - Disclosure - Depreciation Amortization and Impairment by Per Function - Summary of Depreciation and Amortization (Details) link:presentationLink link:calculationLink link:definitionLink 100960 - Disclosure - Depreciation Amortization and Impairment by Per Function - Summary of Depreciation and Amortization (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 100970 - Disclosure - Employee and Personnel Costs - Summary of Employee Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 100980 - Disclosure - Employee and Personnel Costs - Summary of Employee Benefits (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 100990 - Disclosure - Employee and Personnel Costs - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101000 - Disclosure - Employee and Personnel Costs - Summary of Employee Benefits Expenses by Function (Details) link:presentationLink link:calculationLink link:definitionLink 101010 - Disclosure - Share-based compensation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101020 - Disclosure - Share-based compensation - Summary of RSUs (Details) link:presentationLink link:calculationLink link:definitionLink 101030 - Disclosure - Share-based compensation - Summary of RSUs (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101040 - Disclosure - Share-based compensation - Summary of Employee Stock Options Granted (Details) link:presentationLink link:calculationLink link:definitionLink 101050 - Disclosure - Share-based compensation - Summary of Employee Stock Options Granted (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101060 - Disclosure - Share-based compensation - Summary of Employee Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 101070 - Disclosure - Share-based compensation - Summary of Changes on Fair Value Per Employee Stock Option Granted (Details) link:presentationLink link:calculationLink link:definitionLink 101080 - Disclosure - Share-based compensation - Summary of Changes on Fair Value Per Employee Stock Option Granted (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101090 - Disclosure - Share-based compensation - Summary of Warrants Granted (Details) link:presentationLink link:calculationLink link:definitionLink 101100 - Disclosure - Share-based compensation - Summary of Model Inputs for Warrants Granted (Details) link:presentationLink link:calculationLink link:definitionLink 101110 - Disclosure - Share-based compensation - Summary of Changes on Fair Value Per Warrant Granted (Details) link:presentationLink link:calculationLink link:definitionLink 101120 - Disclosure - Other Operating Income and (Expenses), Net - Summary of Other Operating Income and (Expenses), Net (Details) link:presentationLink link:calculationLink link:definitionLink 101130 - Disclosure - Finance income and expenses - Summary of Finance Income and Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 101140 - Disclosure - Finance income and expenses - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101150 - Disclosure - Net exchange-rate differences - Summary of Net exchange-rate differences (Details) link:presentationLink link:calculationLink link:definitionLink 101160 - Disclosure - Income tax - Major Components of Income Tax (Expense) Benefit (Details) link:presentationLink link:calculationLink link:definitionLink 101170 - Disclosure - Income tax - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101180 - Disclosure - Income tax - Summary of Reconciliation of Tax (Expense) Benefit and Accounting Loss (Details) link:presentationLink link:calculationLink link:definitionLink 101190 - Disclosure - Income tax - Summary of Reconciliation of Tax Benefit/(Expense) and Accounting Loss (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101200 - Disclosure - Income tax - Summary of Deferred Tax Relates (Details) link:presentationLink link:calculationLink link:definitionLink 101210 - Disclosure - Income tax - Summary of Reconciliation of Net Deferred Tax (Details) link:presentationLink link:calculationLink link:definitionLink 101220 - Disclosure - Income tax - Summary of Deferred Tax Assets Not Been Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 101230 - Disclosure - Income tax - Summary of Tax Loss Carry-forwards (Details) link:presentationLink link:calculationLink link:definitionLink 101240 - Disclosure - Investments in Subsidiaries - Summary of Principal Subsidiaries (Details) link:presentationLink link:calculationLink link:definitionLink 101250 - Disclosure - Intangible Assets - Summary of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 101260 - Disclosure - Intangible Assets - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101270 - Disclosure - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 101280 - Disclosure - Property, plant and equipment - Summary of Property, Plant and Equipment (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101290 - Disclosure - Property, plant and equipment - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101300 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101310 - Disclosure - Leases - Summary of Consolidated Statement of Financial Position Amounts Relating to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 101320 - Disclosure - Leases - Summary of Changes in Right of Use Assets (Details) link:presentationLink link:calculationLink link:definitionLink 101330 - Disclosure - Leases - Summary of Changes in Right of Use Assets (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101340 - Disclosure - Leases - Summary of Amounts Recognized in Consolidated Statement of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 101350 - Disclosure - Other Non-Current Receivables - Summary of Other Non-Current Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 101360 - Disclosure - Other Non-Current Receivables - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101370 - Disclosure - Financial Instruments Per Category - Summary of Financial Instruments Per Category (Details) link:presentationLink link:calculationLink link:definitionLink 101380 - Disclosure - Financial Instruments Per Category - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101390 - Disclosure - Financial Instruments Per Category - Summary of Financial Instruments Include Interest Rate Swaps, Present Value of Estimated Future Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink 101400 - Disclosure - Financial Instruments Per Category - Summary of Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 101410 - Disclosure - Financial Instruments Per Category - Summary of Carrying Amount of Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 101420 - Disclosure - Financial Instruments Per Category - Summary of Key Inputs and Assumptions Used in the Valuation Model for Fair Value of the Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 101430 - Disclosure - Financial Instruments Per Category - Summary of Key Inputs and Assumptions Used in the Valuation Model for Fair Value of the Convertible Note (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101440 - Disclosure - Financial instruments per category - Summary of Impact of Key Inputs and Assumptions on the Fair Value of the Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 101450 - Disclosure - Financial instruments per category - Summary of Impact of Key Inputs and Assumptions on the Fair Value of the Convertible Notes (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 101460 - Disclosure - Inventories - Summary of Inventories (Details) link:presentationLink link:calculationLink link:definitionLink 101470 - Disclosure - Inventories - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101480 - Disclosure - Trade receivables - Summary of Trade Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 101490 - Disclosure - Trade receivables - Summary of Carrying Amounts By Currency (Details) link:presentationLink link:calculationLink link:definitionLink 101500 - Disclosure - Other Current Receivables - Summary of Other Current Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 101510 - Disclosure - Other Current Receivables - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101520 - Disclosure - Prepaid Expenses - Summary of Prepaid Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 101530 - Disclosure - Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Details) link:presentationLink link:calculationLink link:definitionLink 101540 - Disclosure - Equity - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101550 - Disclosure - Liabilities to Credit Institutions - Summary of Liabilities to Credit Institutions (Details) link:presentationLink link:calculationLink link:definitionLink 101560 - Disclosure - Liabilities to Credit Institutions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101570 - Disclosure - Other non-current liabilities - Summary of Other Non-current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 101580 - Disclosure - Provisions - Summary of Changes in Provisions (Details) link:presentationLink link:calculationLink link:definitionLink 101590 - Disclosure - Shareholder Loans - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101600 - Disclosure - Convertible Notes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101610 - Disclosure - Other Current Liabilities - Summary of Other Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 101620 - Disclosure - Accrued Expenses - Summary of Accrued Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 101630 - Disclosure - Related Party Disclosures - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101640 - Disclosure - Changes in Liabilities Attributable to Financing Activities - Summary of Changes in Liabilities Attributable to Financing Activities (Details) link:presentationLink link:calculationLink link:definitionLink 101650 - Disclosure - Loss per Share - Summary of Loss per Share (Details) link:presentationLink link:calculationLink link:definitionLink 101660 - Disclosure - Loss per Share - Summary of Potential Dilutive Securities Not Included in Diluted Loss per Share Calculations (Details) link:presentationLink link:calculationLink link:definitionLink 101670 - Disclosure - Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101680 - Disclosure - Non-current assets held for sale - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 101690 - Disclosure - Non-current assets held for sale - Summary of Assets and Liabilities of the Group Classified (Details) link:presentationLink link:calculationLink link:definitionLink 101700 - Disclosure - Events After the End of the Reporting Period - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink Working capital credit facility. Working Capital Credit Facility [Member] Working Capital Credit Facility Ogden Facility. Ogden Facility Member Ogden Facility Asia [Member] Asia Auditor Firm ID Auditor Firm ID Intangible assets and goodwill [abstract] Change in fair value recognized in consolidated statement of other comprehensive loss Increase (decrease) through changes in fair values, liabilities arising from financing activities Document Transition Report Document Transition Report Financing activities Cash flows from (used in) financing activities [abstract] USD United States of America, Dollars Real Property Mortgage Certificates Real property mortgage certificates [Member] Real property mortgage certificates. Fort Worth, Texas Fort Worth [Member] Fort Worth. Loans Receivable Maturity Loans receivable maturity. Other Current Liabilities [Abstract] Other current liabilities. Non-executive director. Non Executive Director [Member] Non-Executive Director Percentage Amount By Which Value Assigned To long-term EBITDA margin decrease In Order For Recoverable Amount To Be Equal To Carrying Amount Percentage amount by which value assigned to long-term EBITDA margin decrease in order for recoverable amount to be equal to carrying amount Percentage amount by which value assigned to long-term EBITDA margin decrease in order for recoverable amount to be equal to carrying amount. Oatly Sweden Operations & Supply AB Oatly Sweden Operations And Supply A B [Member] Oatly Sweden Operations & Supply AB. Other Other temporary differences [member] Types of contracts [member] Types of contracts [member] Form of credit toward future use of shared assets member. Form of Credit Toward Future Use of Shared Assets [Member] Form of Credit Toward Future Use of Shared Assets Disclosure Of Significant Investments In Subsidiaries [Line Items] Disclosure of subsidiaries [line items] Fair value Weighted average fair value at measurement date, share options granted Reclassification Increase (decrease) through transfers, intangible assets other than goodwill Commodity Price Risk Fair value/price risk [member] Commodity price risk [member] Allowance account for credit losses of financial assets at beginning of period Allowance account for credit losses of financial assets at end of period As at January 1 As at December 31 Allowance for expected credit losses Allowance account for credit losses of financial assets Geographical Geographical [Axis] Liabilities to credit institutions Bank borrowings, undiscounted cash flows Issue of shares Issue of equity Net increase/(decrease) in cash and cash equivalents Net increase (decrease) in cash and cash equivalents before effect of exchange rate changes Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Foreign Currency Translation Reserve Foreign Currency Translation Reserve [member] Foreign currency translation reserve. Current provision for decommissioning, restoration and rehabilitation costs Current, Decommissioning Weighted average exercise price, Granted Weighted average exercise price of share options granted in share-based payment arrangement Number of purchase agreements Number Of Purchase Agreements Number of purchase agreements. 100 Basis Points Interest Rate Risk Hundred Basis Point [Member] Interest rate risk hundred basis point. Land and Buildings Land and buildings [member] Decrease in existing provisions other provisions. Decrease in Existing Provisions Other Provisions Decreases: included in the acquisition value of right-of-use assets Interest rate description Borrowings Interest Rate Description Borrowings interest rate description. Increase (decrease) through Assets held for sale , liabilities arising from financing activities Increase (decrease) through Assets held for sale , liabilities arising from financing activities Assets held for sale (Note 34) Reclassifications Increase Decrease Due To Reclassifications Increase decrease due to reclassifications. Gross carrying amount Gross Current Trade Receivables Gross current trade receivables. Document Information [Table] Document Information [Table] Granted November November 2021 Granted On November Two Thousand Twenty One [Member] Granted on November Two Thousand Twenty One. Ranges [member] Term Loan [Member] Term Loan [Member] Term Loan Non-current provisions [abstract] Principal activities Principal Activities Of Subsidiary Principal activities of subsidiary. SOFR with Base Rate S O F R With Base Rate [Member] SOFR with Base Rate. Share-based payments Expense From Sharebased Payment Transactions With Employees Excluding External Consultants Expense ​from ​share-based payment​ transactions ​with ​employees excluding external consultants. Changes in liabilities attributable to financing activities Disclosure of information that enables users of financial statements to evaluate changes in liabilities arising from financing activities [text block] Earnings Per Share [Line Items] Earnings per share [line items] Nominal amount of liabilities to credit institutions Nominal Amount Of Liabilities To Credit Institutions With Variable Interest Rate Nominal amount of liabilities to credit institutions with variable interest rate. Credit Institute in United States Credit Institute In United States [Member] Credit institute in United States member. Trade receivables [member] Trade receivables [member] Long term financing Term Loan Two Term loan one. Prepaid selling and marketing expenses Prepaid Selling And Marketing Expenses Prepaid selling and marketing expenses. Number of share options granted Number of share options granted in share-based payment arrangement Advance payments to vendors Current advances to suppliers China (Asia III) China Asia I I I [Member] China (Asia III). Consulting agreement. Consulting Agreement [Member] Consulting Agreement Pension and post-employment benefits Key management personnel compensation, post-employment benefits Incremental facility commitments amount upon amendment. Incremental Facility Commitments Amount Upon Amendment Incremental facility commitments amount upon amendment Movements in provisions Adjustments for provisions S O F R [member] S O F R [member] SOFR Summary of Changes in Liabilities Attributable to Financing Activities Disclosure of reconciliation of liabilities arising from financing activities [text block] Total Inventories Current inventories Period of lease term option to extend Lease Term Extension Option Lease term extension option. ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Sweden SWEDEN Disclosure of detailed information about financial instruments [abstract] Other [Member] Other. Other Accrued Expenses Other Aggregate purchase price paid Aggregate Purchase Price Paid Aggregate Purchase Price Paid Additions Additions other than through business combinations, intangible assets other than goodwill Share-based payment arrangements [member] Share-based payment arrangements [member] Disclosure of operating segments [abstract] Address Type Address Type [Domain] Share price at valuation date Conversion Share Price At Valuation Date Conversion share price at valuation date. Summary of Finance Income and Expenses Disclosure Of Detailed Information About Finance Income And Expenses Explanatory Disclosure of detailed information about finance income and expenses. Percentage of impact of decreasing volatility on convertible notes Percentage of impact of decreasing volatility on convertible notes. Financial liabilities Non-current financial liabilities at fair value through profit or loss [abstract] Share Capital Issued capital [member] Non-current assets Non-current assets [abstract] Impairment of property, plant and equipment and right-of-use assets and intangible assets Impairment Of Property Plant And Equipment And Right Of Use Assets And Intangible Assets Impairment of property, plant and equipment and right-of-use assets and intangible assets. Segments [axis] Segments [axis] Capitalization rate of borrowing costs Capitalisation rate of borrowing costs eligible for capitalisation Ogden. Ogden Investments in subsidiaries Disclosure of subsidiaries [text block] The Netherlands NETHERLANDS Short-term derivatives Short-term derivatives. Balance Balance Liabilities arising from financing activities Selling, General and Administrative Expenses Selling, general and administrative expense [member] Granted On May Two Thousand Twenty Two. Granted On May Two Thousand Twenty Two [Member] May 2022 Foodservice Food Service Channel [Member] Food service channel. Summary of Weighted Average Number of Shares Summary Of Weighted Average Number Of Shares Explanatory Summary of weighted average number of shares explanatory. Summary of Prepaid Expenses Disclosure Of Summary Of Prepaid Expenses Explanatory Disclosure of summary of prepaid expenses. Advances to suppliers Advances To Suppliers The amount of advances to suppliers before goods or services are received. Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] Disclosure of terms and conditions of share-based payment arrangement [line items] Tax loss carry-forwards Tax Loss Carry Forwards Tax loss carry forwards. Ownership interest percentage Proportion of ownership interest in subsidiary Total Undiscounted Cash Flows Total Undiscounted Cash Flows Member Total undiscounted cash flows. Total property, plant and equipment Property, plant and equipment Beginning balance Ending balance Property, plant and equipment Property, plant and equipment (Note 15) Current versus non-current classification Description of Accounting Policies Relevant To Understanding of Financial Statements [Text Block] Description of Accounting Policies Relevant To Understanding of Financial Statements [Text Block] Other costs related to assets held for sale. Other Costs Related To Assets Held For Sale Other costs related to assets held for sale (Note 34) Other costs related to assets held for sale (Note 34) Assets and liabilities not classified as held for sale [member] Segments [member] Segments [member] Production Plants Three Production Plants Three [Member] Production plants three. Assets and liabilities classified as held for sale [axis] Other reserves Foreign currency translation reserve Reserve of exchange differences on translation Schedule of Changes in Provisions Disclosure Of Changes In Provisions Disclosure of changes in provisions. Operating activities Cash flows from (used in) operating activities [abstract] Number of warrants, granted Number of other equity instruments granted in share-based payment arrangement Employee and Personnel Costs Disclosure of employee benefits [text block] Intangible assets Intangible assets other than goodwill [member] Intangible assets other than goodwill [member] Noncurrent Receivables [Table] Noncurrent receivables. Accrued expenses Accruals classified as current Disclosure of Other Operating Income and Expenses Net [Line Items] Disclosure of other operating income and expenses, net. 300 Basis Points Interest Rate Risk Three Hundred Basis Point [Member] Interest rate risk three hundred. Total increase (decrease) in equity Increase (decrease) in equity Increase (decrease) in equity Financial risk management Disclosure of financial risk management [text block] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments and contingencies. Number of A Shares Number Of A Shares [Member] Number of A shares. Floor rate Increase decrease in interest rate basis points Borrowings, adjustment to interest rate basis Summary of Fair Value of Financial Instruments Include Interest Rate Swaps, Present Value of Estimated Future Cash Flows Disclosure of fair value of financial instruments [text block] Lease liability Lease liability [Member] Lease liability. Cereal Base CEBA AB Cereal Base C E B A A B [Member] Cereal Base CEBA AB Expected dividend yield Expected dividend, share options granted Total depreciation/amortization/impairment by function Depreciation Depreciation, right-of-use assets Provision asset held for sale. Provision Asset Held For Sale Assets held for sale Shortfall expenses Volume Short fall Expenses Volume Short fall Expenses Forfeited RSUs Related To Organizational Restructuring And YYF Transaction Forfeited RSUs Related to Organizational Restructuring and YYF Transaction [Member] Forfeited RSUs Related to Organizational Restructuring and YYF Transaction [Member] Percentage of impact of increasing expected volatility Percentage Of Impact Of Increasing Expected Volatility Percentage of impact of increasing expected volatility. Purchase price received Total Received Sales Price Total received sales price. Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] At December 31, 2022 At December 31, 2023 Total non-current provisions Provisions Non-current provisions Provisions (Note 26) SGD/CNY Exchange Rate S G D Vs C N Y Exchange Rate [Member] SGD/CNY exchange rate. Percentage of impact of increasing share price Percentage Of Impact Of Increasing Share Price Percentage of impact of increasing share price. Value added tax Current value added tax payables Types of customers [axis] Types of customers [axis] China Resources Verlinvest Health Investment Limited. China Resources Verlinvest Health Investment Limited [Member] China Resources Verlinvest Health Investment Limited Cash and cash equivalents [abstract] Adjusted EBITDA Adjusted Earnings Before Interest Taxes Depreciation And Amortization Adjusted earnings before interest, taxes, depreciation, and amortization. Prepaid insurance expenses Prepaid Insurance Expenses Prepaid insurance expenses. Explanation of period over which management has projected cash flows Explanation of period over which management has projected cash flows Trading Symbol Trading Symbol Expected price volatility of the Company share Description Of Expected Volatility Of Convertible Notes Description of expected volatility of convertible notes. Summary of Other Current Liabilities Disclosure Of Detailed Information About Other Current Liabilities Explanatory The disclosure of detailed Information about other current liabilities. Severance pay Severance Pay Severance pay. Summary of Potential Dilutive Securities that were not Included in Diluted Loss per Share Calculations Summary Of Potential Dilutive Instruments That Were Not Included In Diluted Loss Per Share Calculations Explanatory Summary of potential dilutive instruments that were not included in diluted loss per share calculations. Uncommitted incremental revolving facility option. Uncommitted incremental revolving facility option Vested and exercisable as of December 31, 2023 Number of Share options vested and exercisable in sharebased payment arrangement. Number Of Share Options Vested and exercisable In Sharebased Payment Arrangement Number of installments Number Of Installments Number of installments. Risk-free interest rate decrease 1% Risk-free interest rate decrease in fair value of convertible notes Risk-free interest rate decrease in fair value of convertible notes. Exchange differences from translation of foreign operations Gains (losses) on exchange differences on translation of foreign operations, net of tax Tax loss carry-forwards, Unlimited Tax Loss Carry Forwards Which Have No Date To Expire Tax loss carry forwards which have no date to expire. Organizational restructuring. Organizational Restructuring [Member] Organizational Restructuring Events after the end of the reporting period Disclosure of events after reporting period [text block] Statement Of Cash Flows [Line Items] Statement Of Cash Flows [Line Items] Deferred income tax asset Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised Accumulated Deficit Retained earnings [member] Number of warrants, Forfeited during the period Number of instruments, Forfeited Number of other equity instruments forfeited in share-based payment arrangement Number of geographical areas Number Of Geographical Areas Number of geographical areas. Weighted average exercise price, Forfeited Weighted average exercise price of share options forfeited in share-based payment arrangement Carrying amount Convertible notes, Beginning Balance Convertible notes, Ending Balance Convertible notes Convertible Notes Convertible notes. Total Borrowings Liabilities to credit institutions balance Pre-tax discount rate member. Pre-Tax Discount Rate [Member] Pre-Tax Discount Rate Summary of Reconciliation of Net Deferred Tax Disclosure Of Detailed Information About Reconciliation Of Net Deferred Tax Explanatory Disclosure of detailed information about reconciliation of net deferred tax. Expected premiums Estimate of benefit payments expected to be paid from defined benefit plan Other non-current receivables Other non-current assets Treasury shares [member] Treasury Shares Granted On November Two Thousand Twenty Two. Granted On November Two Thousand Twenty Two [Member] November 2022 Temporary difference, unused tax losses and unused tax credits [axis] Temporary difference, unused tax losses and unused tax credits [axis] Total issued capital Share capital Issued capital Summary of Financial Instruments Per Category Disclosure of detailed information about financial instruments [text block] Disclosure Of Significant Investments In Subsidiaries [Table] Disclosure of subsidiaries [table] Assets [member] Assets [member] Current tax liabilities Current tax liabilities, current Disclosure of analysis of single amount of discontinued operations [table] Reclassifications Increase (decrease) through transfers, property, plant and equipment Entity Address, City or Town Entity Address, City or Town Lease liabilities Lease Liabilities Embedded Leases Lease liabilities embedded leases. At Amortized Cost Financial assets at amortised cost, category [member] Net cash flows from (used in) financing activities Cash flows from financing activities Cash flows from (used in) financing activities Proceeds from liabilities to credit institutions Proceeds from borrowings, classified as financing activities Products and services [member] Products and services [member] Fair value of convertible notes Fair Value of Convertible Notes Fair value of convertible notes. Amount paid to related party Services received, related party transactions Statement Of Changes In Equity [Line Items] Statement of changes in equity [line items] Accumulated loss carry-forwards Accumulated Tax Loss Carry Forwards Accumulated tax loss carry forwards. Reduction of share capital through retirement of shares Reduction Of Share Capital Through Retirement Of Shares Reduction of share capital through retirement of shares. SEK/NOK S E K N O K [Member] SEK/NOK. Disclosure Of Quantitative Information About Rightofuse Assets [Line Items] Disclosure of quantitative information about right-of-use assets [line items] Research and development expenses Research and development expense Legal settlement Losses on litigation settlements Losses on litigation settlements Provision for decommissioning, restoration and rehabilitation costs [member] Decommissioning Loans issued to employees Loans and receivables Warrants Warrants [member] May 2023 Granted On May Two Thousand Twenty Three [Member] Granted on may two thousand twenty three. Increase (Decrease) through conversion of ordinary shares in to loan Increase Decrease Through Conversion Of Ordinary Shares In To Loan Increase (decrease) through conversion of ordinary shares in to loan. Additions to right-of-use assets Increases Additions to right-of-use assets Repayments of borrowings Repayment of liabilities to credit institutions Repayments of borrowings, classified as financing activities Functional or presentation currency [member] Functional or presentation currency [member] Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Table] Disclosure of reconciliation of liabilities arising from financing activities [table] Disclosure Of Quantitative Information About Rightofuse Assets [Table] Disclosure of quantitative information about right-of-use assets [table] Percentage of share capital owned in subsidiary Percentage of Share capital Owned in Subsidiary Percentage of share capital owned in subsidiary. Redemption of warrants Increase Decrease Through Redemption Of Warrants The increase (decrease) in equity resulting from redemption of warrants. TLB Credit Agreement and EIF Facility T L B Credit Agreement And E I F Facility [Member] TLB credit agreement and EIF facility. Disclosure Of Detailed Information About Finance Income And Expense Abstract Disclosure Of Detailed Information About Finance Income And Expense [Abstract] Accumulated Depreciation, Amortization and Impairment Accumulated depreciation, amortisation and impairment [member] Measurement [axis] Measurement [axis] Risk-free interest rate increase 1% Risk-free interest rate increase in fair value of convertible notes Risk-free interest rate increase in fair value of convertible notes. Provisions [abstract] USD/SEK U S D S E K [Member] USD/SEK. Adjustments in respect of income tax of previous years Adjustments in respect of income tax of previous years Adjustments for current tax of prior periods Adjustments for impairment loss reversal of impairment loss recognised in profit or loss related to asset held for sale. Adjustments For Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss Related to Asset Held For Sale Impairment related to assets held for sale Impairment charge related to assets held for sale (Note 34) Derivatives Derivative financial liabilities November 2023 Granted On November Two Thousand Twenty Three [Member] Granted On November Two Thousand Twenty Three. Bonus issue Increase Decrease Through Bonus Issue The increase (decrease) in equity resulting from bonus issue. Current restructuring provision Current, Restructuring Share price decrease 10% Share Price Decrease In Fair Value Of Warrants Granted Share price decrease in fair value of warrants granted. Commitments transferred. Commitments transferred Construction in Progress Construction in progress [member] Americas Americas Segment [Member] Americas segment. LTI 2021 L T I Incentive Plan Two Thousand And Twenty One [Member] LTI incentive plan 2021. Research and Development Expenses Research And Development Expenses [Member] Research and development expenses. GBP United Kingdom, Pounds Entity Central Index Key Entity Central Index Key Description of accounting policy for non-current assets or disposal groups classified as held for sale [text block] Non-current assets held for sale Nativus Company Limited and Verlinvest S.A Nativus Company Limited and Verlinvest S.A [Member] Nativus company limited and verlinvest s.a. Share-based compensation Disclosure of share-based payment arrangements [text block] Borrowings amortization percentage. Borrowings amortization percentage Borrowings, amortization percentage Accrued Production Expenses Accrued Production Expenses [Member] Accrued production expenses member. SEK/CNY S E K C N Y [Member] [SEK/CNY. Disclosure Of Depreciation And Amortization [Table] Disclosure Of Depreciation And Amortization [Table] Disclosure of depreciation and amortization. Total cash Cash at bank and on hand Cash Liabilities to Credit Institutions Liabilities To Credit Institutions [Member] Liabilities to credit institutions member. Loss Allowances for Financial Assets Loss Allowances For Financial Assets [Member] Loss allowances for financial assets. Weighted average exercise price, Beginning balance Weighted average exercise price, Ending balance Weighted average exercise price of share options outstanding in share-based payment arrangement Disclosure Of Transactions Between Related Parties [Table] Disclosure of transactions between related parties [table] Unused tax losses for which no deferred tax asset recognized Unused tax losses for which no deferred tax asset recognised Right-of-use assets Right-of-Use Assets Right-of-use assets [member] Subsidiaries Subsidiaries [member] Document Registration Statement Document Registration Statement Unused Tax Losses Unused tax losses [member] Subclassifications of assets, liabilities and equities [abstract] Sustainable multicurrency revolving credit facility Sustainable Revolving Credit Facility Multicurrency Revolving Credit Facility Sustainable revolving credit facility multicurrency revolving credit facility. Par value Par value per share Non-current assets or disposal groups classified as held for sale Net assets directly associated with disposal group Non-current assets or disposal groups classified as held for sale, Total Assets held for sale Non-cash flows: Non Cash Flows [Abstract] Non-cash flows abstract. Business combinations [axis] Average exercise price per share, Forfeited during the period Weighted average exercise price of other equity instruments forfeited in share-based payment arrangement Summary of Sensitivity Analysis Sensitivity analysis for types of market risk [text block] Income tax expense/(benefit) Adjustments for income tax expense Peterborough and Dallas Fort Worth Peterborough and Dallas Fort Worth [Member] Peterborough and Dallas Fort Worth [Member] Cash and cash equivalents Description of accounting policy for determining components of cash and cash equivalents [text block] Total non-current liabilities Non-current liabilities Disclosure of non-adjusting events after reporting period [line items] Equity [member] Equity [member] Addition – leases Increase through new leases, liabilities arising from financing activities Non-cash impairments Impairment Impairment loss recognised in profit or loss, property, plant and equipment Impairment Nominal interest rate for first year Nominal Interest Rate For First Year Nominal interest rate for first year. Number of lease agreements Number Of Lease Agreements Regarding Production Facilities Entered In To During Year Number of lease agreements regarding production facilities entered in to during the year. Intersegment Revenue Intersegment Revenue [Member] Intersegment revenue. Percentage of increase in general commodity cost price to effect commodity cost Percentage Of Increase In General Commodity Cost Price To Effect Commodity Cost Percentage of increase in general commodity cost price to effect commodity cost. Investments at fair value. Investments at fair value Investments at fair value Convertible Notes [abstract] Convertible notes. Maturity Promissory Notes Receivable Maturity Promissory notes receivable maturity. Total net leverage ratio Net Leverage Ratio Net leverage ratio. Average exercise price per share, Beginning balance Average exercise price per share, Ending balance Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement Disclosure Of Operating Segments [Line Items] Disclosure of operating segments [line items] Depreciation Amortization and Impairment by Per Function Disclosure of depreciation and amortisation expense [text block] SEK/EUR S E K E U R [Member] SEK/EUR. Intangible assets Disclosure of intangible assets and goodwill [text block] Assets pledged as security Trade receivables and inventories Financial assets pledged as collateral for liabilities or contingent liabilities Impact on loss before tax, increase/decrease Exchange-rate differences—net Foreign exchange gain (loss) Reduced commitments. Reduced commitments Geographical Geographical [Domain] Other Other tax effects for reconciliation between accounting profit and tax expense (income) HKD Decrease through classified as held for sale, property, plant and equipment Decrease through classified as held for sale, property, plant and equipment Assets held for sale (Note 34) US UNITED STATES Unused amount reversed Increase (decrease) through other changes, allowance account for credit losses of financial assets Number of Embedded Lease Contracts. Number of Embedded Lease Contracts Number of embedded lease contracts Market interest rate increase 1% Market interest rate increase in fair value of convertible notes Market interest rate increase in fair value of convertible notes Utilized loan amount. Utilized Loan Amount Utilized loan amount Impairment related to discontinued construction of production facilities Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss Impairment recognized to redude carrying amount of assets to their fair value less costs Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation Impairment charge related to assets held for sale (Note 34) Impairment charge related to assets held for sale (Note 34) Currency in which information is displayed [axis] Currency in which information is displayed [axis] Trademarks, Patents and Similar Rights Trademarks Patents And Similar Rights [Member] Trademarks, patents and similar rights. SEK/USD Exchange Rate S E K Vs U S D Exchange Rate [Member] SEK/USD exchange rate. Subsidiaries [axis] Subsidiaries [axis] USD/SEK Exchange Rate U S D Vs S E K Exchange Rate [Member] USD/SEK exchange rate. Weighted-average share price at grant date Share price at grant date Weighted average share price, share options granted Entity Registrant Name Entity Registrant Name Percentage of impact of increasing market interest rate on convertible notes Percentage of impact of increasing market interest rate on convertible notes. Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners Total current assets other than assets held for sale Convertible notes in financing after reflecting original issue of discount Convertible Notes in Financing After Reflecting Original Issue of Discount Convertible notes in financing after reflecting original issue of discount. Liabilities to Credit Institutions Disclosure Of Information About Liabilities To Credit Institutions Explanatory Disclosure of information about liabilities to credit institutions explanatory. Transfers between levels Transfers Between Levels In Fair Value Hierarchy Transfers between levels in fair value hierarchy. Ma’anshan Maanshan [Member] Maanshan. Purchase of property, plant and equipment Purchase of property, plant and equipment Purchase of property, plant and equipment, classified as investing activities Disclosure Of Classes Of Share Capital [Table] Disclosure of classes of share capital [table] Denominated in EUR Denominated In E U R [Member] Denominated in EUR member. Percentage of aim of exposure to currency risks. Percentage of aim of exposure to currency risks Percentage of aim of exposure to currency risks Loss Allowance for Trade Receivables Loss Allowance For Trade Receivables [Member] Loss allowance for trade receivables. Cost At cost [member] Oatly Shanghai Co. Ltd. Oatly Shanghai Co Ltd [Member] Oatly Shanghai Co. Ltd. Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Table] Disclosure of terms and conditions of share-based payment arrangement [table] Attribution of expenses by nature to their function [axis] Attribution of expenses by nature to their function [axis] Revolving Credit Facility Revolving Credit Facilities [Member] Revolving credit facilities. Liabilities To Credit Institutions [Table] Liabilities To Credit Institutions [Table] Liabilities to credit institutions. Foreign currency forward contracts- outflows Foreign Currency Forward Contracts Undiscounted Cash Out Flows Foreign currency forward contracts undiscounted cash out flows. Liabilities Liabilities at beginning of period Liabilities at end of period Total liabilities Liabilities EUR Euro Member Countries, Euro Impact on loss before tax, increase Increase In Loss Before Tax Due To Borrowings Adjustment To Interest Rate Basis Increase in loss before tax due to borrowings adjustment to interest rate basis. Intangible assets and goodwill [member] Intangible assets and goodwill [member] Other operating income and (expenses), net Other operating income and (expenses), net Other operating (expense)/income Other operating income (expense) Tax effect of changes in tax rates Tax effect from change in tax rate Percentage of impact of decreasing market interest rate on convertible notes Percentage of impact of decreasing market interest rate on convertible notes. Liabilities to credit institutions Bank Borrowings Carrying Amount Bank borrowings carrying amount. Long-term prepaid expenses Long Term Prepaid Expenses Long term prepaid expenses. Summary Of Significant Accounting Policies [Abstract] Summary of significant accounting policies. Current liabilities other than liabilities included in disposal groups classified as held for sale Total current liabilities other than Liabilities directly associated with the assets held for sale Other changes Increase (decrease) through other changes, liabilities arising from financing activities Disclosure Of Operating Segments [Table] Disclosure of operating segments [table] Tax Losses Carried Forward Tax Losses Carried Forward [Member] Tax losses carried forward. Term loan facility period. Term loan facility period Discontinue Construction of New Production Facilities in Peterborough UK and Dallas Fort Worth Texas Discontinue the construction of new production facilities in Peterborough U K and Dallas Fort Worth Texas [Member] Discontinue the construction of new production facilities in Peterborough, UK and Dallas Fort Worth, Texas. Asia Asia Segment [Member] Asia segment. Accordion Option Accordion Option [Member] Accordion option. Prepaid expenses Disclosure Of Prepaid Expenses Explanatory Disclosure of prepaid expenses. Convertible notes, Sale price percentage equals or exceeds. Convertible notes, Sale price percentage equals or exceeds Proceeds from Convertible Notes Proceeds from issue of bonds, notes and debentures Major components of tax expense (income) [abstract] SEK Sweden, Kronor Havrekärnan AB Havrekarnan A B [Member] Havrekärnan AB Entity Current Reporting Status Entity Current Reporting Status Summary of Accrued Expenses Disclosure Of Detailed Information About Accrued Expenses Explanatory The disclosure of detailed information about accrued expenses. Oatmilk Oatmilk Product [Member] Oatmilk product. Corporate Corporate Segment [Member] Corporate segment. Trade payables Trade payables Current trade payables Gross profit Gross profit Gross profit Oatly US Operations & Supply Inc Oatly U S Operations And Supply Inc [Member] Oatly US Operations & Supply Inc Inventories Disclosure of inventories [text block] Exchange rate differences in cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Hypothetical deferred tax impact of unused tax losses for which no deferred tax asset recognised Hypothetical Deferred Tax Impact Of Unused Tax Losses For Which No Deferred Tax Asset Recognised Hypothetical deferred tax impact of unused tax losses for which no deferred tax asset recognised. Entity's total for business combinations [member] Investments in financial assets Purchase of financial instruments, classified as investing activities Warrant issue Increase (decrease) through other changes, equity Summary of Exposure to Foreign Currency Risk Disclosure of nature and extent of risks arising from financial instruments [text block] Percentage of ownership interest in related party by member of board of director Percentage Of Ownership Interest In Related Party By Member Of Board Of Director Percentage of ownership interest in related party by member of board of director. Share capital Share Capital Share capital. Shareholder Loans Shareholder Loans [Member] Shareholder loans member. Total selling, general and administrative expense Selling, general and administrative expenses Selling, general and administrative expense Deferring settlement period of current liability Deferring Settlement Period Of Current Liability Deferring settlement period of current liability. SRCF agreement and EIF facility. SRCF Agreement And EIF Facility [Member] SRCF Agreement and EIF Facility Borrowings by name [axis] Borrowings by name [axis] EMEA Segment EMEA Europe The Middle East And Africa Segment [Member] Europe, Middle East and Africa Segment. Convertible notes, Initial conversion price per ordinary share or ADS. Convertible notes, Initial conversion price per ordinary share or ADS Weighted average fair value at measurement date other equity instruments vested Grant date fair value , Vested Terminal growth rate member. Terminal Growth Rate [Member] Terminal Growth Rate Foreign Jurisdictions Tax Losses Foreign Jurisdictions Tax Losses [Member] Foreign jurisdictions tax losses. Other Miscellaneous other operating income (expense) Miscellaneous other operating income (expense). Currency Risk Currency risk [member] Deferred tax liabilities Deferred tax liabilities Net deferred tax liabilities Deferred tax liability (Note 12) Share capital percentage Share Capital Percentage Share capital percentage. Inventory. Inventory [Member] Inventory Current Fiscal Year End Date Current Fiscal Year End Date Borrowings extended term. Borrowings Extended Term Borrowings extended term Summary of accounting policies Disclosure Of Summary Of Significant Accounting Policies [Text Block] Disclosure of summary of significant accounting policies text block. Classes of property, plant and equipment [axis] Classes of property, plant and equipment [axis] Auditor Name Auditor Name Number of shares outstanding at beginning of period Number of shares outstanding at end of period Ordinary shares outstanding Number of shares outstanding Oatly Hong Kong Holding Ltd Oatly Hong Kong Holding Ltd [Member] Oatly Hong Kong Holding Ltd Classes of assets [axis] Classes of assets [axis] Aggregated measurement [member] Aggregated measurement [member] Current income tax (expense)/benefit Current tax expense (income) Current income tax (expense)/benefit Entity Ex Transition Period Entity Ex Transition Period Market interest rate Description of Market interest rate of convertible notes Description of Market interest rate of convertible notes. Impairment related to discontinued construction of production facilities Adjustments For Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss Related To Discontinued Construction Of Production Facilities Adjustments for impairment loss reversal of impairment loss recognised in profit or loss related to discontinued construction of production facilities. CNY/SEK Exchange Rate C N Y Vs S E K Exchange Rate [Member] CNY Vs SEK exchange rate. Malmo. Malmo [Member] Malmo, Sweden Other contributed capital Additional paid-in capital Amendments to Sustainable Revolving Credit Facility Agreement and Term Loan B Credit Agreement Amendments to Sustainable Revolving Credit Facility Agreement and Term Loan B Credit Agreement [Member] Amendments to sustainable revolving credit facility agreement and term Lloan B credit agreement. Fair Value Reserve Fair Value Reserve [Member] Fair value reserve. Employees Employees [Member] Employees. Americas and Asia Segment Americas And Asia Segments [Member] Americas and Asia segments. Other Intangible Assets Other intangible assets [member] Other financial income Other finance income Finance income and expenses (Note 10) Net Foreign Exchange Gains Classified As Finance Income Net foreign exchange gains classified as finance income. Net foreign exchange difference Legal Settlement Legal proceedings provision [member] Number of extension options Number Of Extension Options Number of extension options. SEK/EUR Exchange Rate S E K Vs E U R Exchange Rate [Member] SEK/EUR exchange rate. Utilisation, allowance account for credit losses of financial assets Receivables written off during the year as uncollectible Utilisation, allowance account for credit losses of financial assets Average exercise price per share, Granted during the year Weighted average exercise price of other equity instruments granted in share-based payment arrangement Short-term Credit Facility Short Term Credit Facility [Member] Short-term credit facility member. Summary of Amounts Recognized in Statement of Operations Disclosure Of Amounts Recognized In Statement Of Operations Explanatory The disclosure of amounts recognized in statement of operations. Prepaid Expenses [Abstract] Prepaid expenses. SEK/USD S E K U S D [Member] SEK/USD. Chef Sam. Chef Sam [Member] Chef Sam Income tax (expense)/benefit Income tax (expense)/benefit reported in the consolidated statement of operations Total tax expense (income) Tax income (expense) Tax expense (income) Disclosure of classes of share capital [abstract] Equity Attributable to Shareholders of the Parent Equity attributable to owners of parent [member] Summary of Financial Liabilities into Maturity Groupings based on Contractual Maturities Disclosure Of Detailed Information About Maturity Analysis For Derivative And Non Derivative Financial Liabilities Explanatory Disclosure of detailed information about maturity analysis for derivative and non-derivative ​financial ​liabilities. Oatly Norway AS Oatly Norway A S [Member] Oatly Norway AS. Reclassifications Reclassifications of Provisions Other Provisions Reclassifications of provisions other provisions. Distribution agreement. Distribution Agreement [Member] Distribution Agreement Deferred tax liability (asset) at beginning of period Deferred tax liability (asset) at end of period Net deferred tax liability (asset) Beginning Balance Ending Balance Deferred tax liability (asset) Conversion price Convertible Notes Conversion Price Convertible notes conversion price. Summary of Revenue from External Customers Disclosure Of Detailed Information About Revenue From External Customers Explanatory The disclosure of detailed information about revenue from external customers. Percentage of impact of decreasing share price on convertible notes Percentage of impact of decreasing share price on convertible notes Disclosure of classes of assets and liabilities held for sale. Disclosure of Classes of Assets and Liabilities Held for Sale [Explanatory] Disclosure of major classes of assets and liabilities classified as held for sale Minimum raised capital amount Minimum Raised Capital Amount Minimum raised capital amount. Hillhouse Hillhouse [member] Hillhouse. Accrued Expenses [Table] Accrued Expenses [Table] Accrued expenses table. Long-term growth rate (%) Growth rate used to extrapolate cash flow projections Estimated growth rate Current lease term extension date Current Maximum Lease Term Extension Date Current maximum lease term extension date. Leases Leases [Member] Leases. Range [axis] Number of share options vested in share-based payment arrangement. Number of share options vested Floating Charges Security Floating charges security [Member] Floating charges security. Amendment fee. Amendment Fee Amendment fee Convertible Notes Convertible Notes [Member] Convertible Notes. Share Based Compensation Share Based Compensation [Member] Share based compensation. Disclosure Of Financial Risk Management [Line Items] Disclosure Of Financial Risk Management [Line Items] Disclosure of financial risk management. Carrying Amount Gross carrying amount [member] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Expenses arising from share-based payment transactions Share-based compensation expense Expense from share-based payment transactions with employees Employee withholding taxes Current payables on social security and taxes other than income tax Accounting loss before tax Accounting profit Counterparties [axis] Decrease in interest rate basis points Decrease In Borrowings Adjustment To Interest Rate Basis Decrease in borrowings adjustment to interest rate basis. Shareholder loan Share Holder Loan Share holder loan. Includes: Cumulative fair value changes on Convertible Notes attributable to changes in credit risk, recognized in the fair value reserve Accumulated increase (decrease) in fair value of financial liability, attributable to changes in credit risk of liability Statement Of Cash Flows [Table] Statement Of Cash Flows [Table] Increase in interest rate basis points Increase in Borrowings Adjustment To Interest Rate Basis Increase in borrowings adjustment to interest rate basis. Entity Voluntary Filers Entity Voluntary Filers Classes of financial instruments [axis] Classes of financial instruments [axis] Impairment charge related to capital expenditures Impairment Charge Related to Capital Expenditures Impairment Charge Related to Capital Expenditures Trade and other receivables [abstract] Summary of Employee Benefits Disclosure Of Detailed Information About Employee Benefits Explanatory The disclosure of detailed information about employee benefits. Property Plant And Equipment And Right Of Use Assets Property Plant And Equipment And Right Of Use Assets [Member] Property, plant and equipment and right-of-use assets. Accumulated Depreciation Accumulated Depreciation and Amortization Accumulated depreciation and amortisation [member] Fair value changes (including interest expenses) recognized in the consolidated statement of operations Convertible Notes Fair Value Changes (Including Interest Expenses) Recognized In Consolidated Statement Of Operations Convertible notes fair value changes (including interest expenses) recognized in consolidated statement of operations. In re Oatly Group AB Securities Litigation In re Oatly Group AB Securities Litigation [Member] In re Oatly Group AB Securities Litigation member. Summary of Changes on Fair Value Per Warrant Granted Disclosure Of Changes On Fair Value Per Warrant Granted Explanatory Disclosure of changes on fair value per warrant granted explanatory. Disclosure Of Intangible Assets [Table] Disclosure of detailed information about intangible assets [table] Disclosure of reconciliation of liabilities arising from financing activities [abstract] Remeasurement - leases Increase (decrease) through Remeasurement leases liabilities arising from financing activities Increase (decrease) through Remeasurement leases liabilities arising from financing activities. Total financial liabilities Total financial liabilities Financial liabilities Total Assets, At amortized cost Financial assets at amortised cost Number of operating segments Number Of Operating Segment Number of operating segment. Financial instruments Description of accounting policy for financial instruments [text block] Scrapped Disposals, intangible assets and goodwill Conversion of shareholder loans Conversion Of Shareholder Loans Conversion of shareholder loans. NOK Liabilities [Abstract] Percentage of increase decrease in foreign exchange rate Percentage Of Reasonably Possible Increase Decrease In Risk Assumption In Foreign Exchange Rate Percentage of reasonably possible increase decrease in risk assumption in foreign exchange rate. Fair Value Less Costs of Disposal to Discontinue Construction of New Production Facilities in EMEA and Americas Segments Fair value less costs of disposal to discontinue the construction of new production facilities in the EMEA and Americas segments [Member] Fair value less costs of disposal to discontinue the construction of new production facilities in the EMEA and Americas segments. Capitalized Development Expenditure Capitalised development expenditure [member] Oatly AB Oatly A B [Member] Oatly AB. Tax loss carry-forwards, Less than 5 years Tax Loss Carry Forwards With Expiration Not Later Than Five Year Tax loss carry forwards with expiration not later than five year. Share price at valuation date Convertible Notes Share Price Convertible notes share price. Between 2 and 5 Years Later than two years and not later than five years [member] Interest expenses on loan from credit institutions Interest expense on bank loans and overdrafts Nominal coupon rate Interest rate Borrowings, interest rate Lease term Lease Term Lease term. Name Name of subsidiary Production Plants Two Production Plants Two [Member] Production plants two. Share issue in subsidiary Increase Decrease Through Share Issue In Subsidiary Increase decrease through share issue in subsidiary. Aging Of Current Trade Receivables [Line Items] Aging Of Current Trade Receivables [Line Items] Aging of current trade receivables. Total non-derivatives Non Derivative Financial Liabilities Non derivative financial liabilities. Derivatives (part of 'other non-current receivables') Non-current derivative financial assets Adjustments to reconcile net loss to net cash flows Adjustments to reconcile profit (loss) [abstract] Inventories, at net realizable value Inventory write-down Write-down of inventories Oatly Singapore Operations & Supply Pte Ltd Oatly Singapore Operations And Supply Pte Ltd [Member] Oatly Singapore Operations & Supply Pte Ltd Shorter lease term period Statement that lessee accounts for short-term leases using recognition exemption Transaction costs Share issue related cost Aging Of Current Trade Receivables [Table] Aging Of Current Trade Receivables [Table] Aging of current trade receivables. Foreign currency translation Description of accounting policy for foreign currency translation [text block] Percentage of exposure to currency risks Percentage Of Exposure To Currency Risks Percentage of exposure to currency risks. Share-based payments expense Share-based payments Increase (decrease) through share-based payment transactions, equity Other Other adjustments to reconcile profit (loss) Equity Equity [abstract] Issuance of promissory note related to non current asset held for sale which were sold Issuance Of Promissory Note Related To Non Current Asset Held For Sale Which Were Sold Issuance of promissory note related to non current asset held for sale which were sold. Sales channels [member] Sales channels [member] Assets held for sale Decrease Through Classified As Held For Sale Right Of Use Asset Decrease through classified as held for sale right of use asset. Fair value reserve related to convertible notes Fair Value Reserve Related to Convertible Notes Fair value reserve related to convertible notes Proceeds from issue of shares, net of transaction costs Proceeds From Issuing Shares Net Of Transaction Costs Proceeds from issuing shares net of transaction costs. Accrued Expenses Accrued Expenses [Member] Accrued expenses. Top of Range Top of range [member] Exercise term Description of maximum term of options granted for share-based payment arrangement Percentage addition of promissory note in interest rate each year Percentage Addition Of Promissory Note In Interest Rate Each Year Percentage addition of promissory note in interest rate each year Disclosure Of Leases [Line Items] Disclosure Of Leases [Line Items] Disclosure of leases. Deferred tax liabilities Deferred tax liabilities Preliminary percentage of collective consolidation level Preliminary Percentage Of Collective Consolidation Level Preliminary percentage of collective consolidation level. Sales channels [axis] Sales channels [axis] Consideration received Total Sales Consideration Received Total sales consideration received. EUR/SEK Exchange Rate E U R Vs S E K Exchange Rate [Member] EUR/SEK exchange rate. Disclosure of subsidiaries [abstract] Lund, Sweden Lund [Member] Lund. Accrued Expenses [Abstract] Accrued expenses abstract. Social security costs Key management personnel compensation social security costs Key management personnel compensation social security costs. Total derivatives Derivative Financial Liabilities Included Undiscounted Cash Flows Derivative financial liabilities included undiscounted cash flows. Trade Receivables [Table] Trade Receivables [Table] Trade receivables. Share capital Description of accounting policy for issued capital [text block] Level 2 Level 2 of fair value hierarchy [member] Interest received Interest received, classified as operating activities Current, Legal settlement Current legal proceedings provision Ordinary Shares Ordinary shares [member] Summary of Inventories Disclosure Of Detailed Information About Inventories The disclosure of detailed information about inventories. Weighted average expected term Description Of Option Life Warrants Granted Description of option life warrants granted. Non-controlling interests Impairment of non-financial assets Description of accounting policy for impairment of non-financial assets [text block] Ya YA Foods USA LLC. Ya YA Foods USA LLC [Member] YYF Disclosure Of Classes Of Share Capital [Line Items] Disclosure of classes of share capital [line items] Interest rate swaps—net settled Interest Rate Swaps Net Settled Undiscounted Cashflows Interest rate swaps net settled undiscounted cashflows. Profit or loss [abstract] Entity's total for subsidiaries [member] Entity's total for subsidiaries [member] Impairment charge related to shared assets Impairment Charge Related to Shared Assets Impairment charge related to shared assets. Loss per share, attributable to shareholders of the parent: Earnings per share [abstract] Statistical Measurement Statistical Measurement [Domain] Derivatives Financial assets, at fair value Accrued interest. Accrued Interest [Member] Accrued interest Summary of Inputs to Black-Scholes Option-pricing Model Used for Employee Stock Options Disclosure of indirect measurement of fair value of goods or services received, share options granted during period [text block] Lowest potential reset price March 2024 Lowest Potential Reset Price March 2024 Lowest Potential Reset Price March 2024 Exchange differences Increase (decrease) through net exchange differences, property, plant and equipment EQUITY AND LIABILITIES Equity and liabilities [abstract] Document Period End Date Document Period End Date Statistical Measurement Statistical Measurement [Axis] Disclosure of non-adjusting events after reporting period [table] Buildings Buildings [member] Country/place of registration and operations Country Of Registration And Operations Country of registration and operations. Total financial liabilities at fair value through profit or loss Total Liabilities, Fair value through profit or loss Financial liabilities at fair value through profit or loss Past due status [member] Past due status [member] Social security costs Social security contributions Financial instruments per category Disclosure of financial instruments [text block] 91- Days Past Due Past Due More Than Three Months [Member] Past due more than three months. CNY China, Yuan Renminbi Machinery Machinery [member] Non-adjusting events after reporting period [member] Non-adjusting events after reporting period [member] Financial assets, class [member] Financial assets, class [member] Singapore, Dollars SGD Cash outflow for leases Cash outflow for leases Cost of Sales Cost of Sales [Member] Number of G Shares Number Of G Shares [Member] Number of G shares. Exercise price ($) Exercise price, share options granted Derivatives Derivatives [member] Volatility increase 2% Volatility Increase In Fair Value Of Warrants Granted Volatility increase in fair value of warrants granted. Risk-free interest rate Description Of Risk Free Interest Rate Of Convertible Notes Description of risk free interest rate of convertible notes . Classes of financial assets [axis] Classes of financial assets [axis] Receivable on vendor for returned equipment due to discontinued construction of new production facility Receivable on vendor for returned equipment due to discontinued construction of new production facility. Summary of Depreciation and Amortization Disclosure Of Detailed Information About Depreciation And Amortization Expenses Explanatory Disclosure of detailed information about depreciation and amortization expenses. Summary of Other Non-Current Receivables Disclosure Of Detailed Information About Other Non Current Receivables The disclosure detailed information about other non current receivables. Litigation settlement date Litigation Settlement Date Litigation settlement date. Other operating income and (expenses), net (Note 9) Exchange Rate Differences Recognized In Other Operating Income Expense Exchange rate differences recognized in other operating income expense. Exchange rate differences (Note 11) R&D Premises R And D Premises [Member] R&D premises. Disposal groups classified as held for sale [member] Disposal Groups Classified as Held for Sale Swedish notes. Swedish Notes [member] Swedish Notes Optional sustainable multicurrency revolving credit facility Optional Sustainable Revolving Credit Facility Multicurrency Revolving Credit Facility Optional sustainable revolving credit facility multicurrency revolving credit facility. Designated loans or receivables at fair value through profit or loss [abstract] Disclosure Of Nature And Extent Of Risks Arising From Financial Instruments [Line Items] Disclosure of nature and extent of risks arising from financial instruments [line items] Other receivables Other Receivables Noncurrent Other receivables noncurrent. China CHINA Exchange differences Increase (decrease) through net exchange differences, intangible assets and goodwill Average exercise price per share, Redeemed during the year Weighted Average Exercise Price Of Warrants Redeemed Weighted average exercise price of warrants redeemed. Between 1 and 2 Years Later than one year and not later than two years [member] Unrecognized tax effect related to transaction cost Unrecognized Tax Effect Related To Transaction Cost Unrecognized tax effect related to transaction cost. Leases Disclosure of leases [text block] Current tax assets Current tax assets, current Salaries and other remuneration Wages and salaries Significant Accounting Judgments Estimates And Assessments [Line Items] Significant Accounting Judgments Estimates And Assessments [Line Items] Significant accounting judgments estimates and assessments. Vesting period Sharebased Payment Award Vesting Period Sharebased payment award vesting period. Incremental facility. Incremental Facility [Member] Incremental Facility Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] GBP/SEK Exchange Rate G B P Vs S E K Exchange Rate [Member] GBP/SEK exchange rate. Commitments And Contingencies [Table] Commitments And Contingencies [Table] Commitments and contingencies. Impact on loss before tax, increase Increase In Loss Before Tax Due To Changes In Fair Value From Short Term Investments Increase in loss before tax due to changes in fair value from short-term investments Antidilutive instruments [member] Number of employee stock options, Forfeited Number of share options forfeited in share-based payment arrangement Major customers [axis] Volatility increase 10% Volatility increase in fair value of convertible notes Volatility increase in fair value of convertible notes. Shareholders of the parent Comprehensive income, attributable to owners of parent Total comprehensive income, attributable to owners of parent Effective interest rate capitalized semi annually Promissory Notes Receivable Effective Interest Rate Capitalized Semi Annually Promissory notes receivable effective interest rate capitalized semi annually. Summary of Liabilities to Credit Institutions Disclosure Of Detailed Information About Liabilities To Credit Institutions Explanatory Disclosure of detailed information about liabilities to credit institutions explanatory. Convertible Notes [Table] Convertible notes. Weighted average exercise price per share Weighted Average Share Price At Grant Date Warrants Weighted average share price at grant date warrants. Expected price volatility of the Company’s shares Description Of Expected Volatility Warrants Granted Description of expected volatility warrants granted. Conversion price, terms of description. Conversion price, terms of description Oatly Netherlands Operation & Supply BV Oatly Netherlands Operation And Supply B V [Member] Oatly Netherlands Operation & Supply BV Payments of lease liabilities Repayment of lease liabilities Payments of lease liabilities, classified as financing activities Contingent consideration paid Contingent Consideration Paid Contingent consideration paid. Amount the Company is contractually obligated to pay to holders of the Convertible Notes at maturity Amount Company Is Contractually Obligated To Pay To Holders Of Convertible Notes At Maturity Amount company is contractually obligated to pay to holders of convertible notes at maturity. Share-based payments expense Adjustments for share-based payments Discontinued Operations Discontinued operations [member] Non-current provision for decommissioning, restoration and rehabilitation costs Non-current, Decommissioning Building One Building One [Member] Building one. Events after reporting period. Events After Reporting Period [Member] Events After Reporting Period Non-current lease liabilities (Note 16) Lease liabilities Non-current lease liabilities Exchange differences on translation [abstract] Current Current [member] Asset impairment charges and other costs related to discontinued construction of production facilities Asset impairment charges and other costs related to discontinued construction of production facilities Asset impairment charges and other costs related to discontinued construction of production facilities Asset impairment charges and other costs related to discontinued construction of production facilities. Number of other equity instruments exercised or vested in share-based payment arrangement Number of instruments, Vested Unobservable inputs [axis] Lowest potential reset price March 2025 Lowest Potential Reset Price March 2025 Lowest potential reset price March 2025. Total Key management personnel compensation Derivatives (part of other non-current liabilities) Non-current derivative financial liabilities Plant Other property, plant and equipment [member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Interactive Data Current Entity Interactive Data Current Direct Ownership Direct Ownership [Member] Direct ownership. Impact of decreasing expected term Impact Of Decreasing Expected Term Impact of decreasing expected term. Provisions Description of accounting policy for provisions [text block] Bank overdraft facility Short-term credit facility Liabilities to credit institutions Members of key management, other employees and entity controlled by related parties. Members Of Key Management Other Employees And Entity Controlled By Related Parties [Member] Members of Key Management, Other Employees and Entity Controlled By Related Parties Plant and Machinery Plant And Machinery [Member] Plant and machinery. Disclosure Of Intangible Assets [Line Items] Disclosure of detailed information about intangible assets [line items] CAP CAP [Member] Cap. TOTAL EQUITY AND LIABILITIES Equity and liabilities Disclosure Of Financial Risk Management [Abstract] Disclosure of financial risk management. Realizing period of current asset Realizing Period Of Current Asset Realizing period of current asset. Text Block1 [Abstract] Text Block Indirect Ownership Indirect Ownership [Member] Indirect ownership. Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Prepaid production and warehouse expenses Prepaid Production And Warehouse Expenses Prepaid production and warehouse expenses. Eliminations Elimination of intersegment amounts [member] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Grant date Date of grant of share-based payment arrangement Disclosure Of Other Non Current Liabilities [Abstract] Disclosure of other non current liabilities abstract. Interest expense (included in finance expenses) Interest expenses on lease liabilities Interest expense on lease liabilities Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Incentive award plan two thousand and twenty one. 2021 Plan Accrued Logistic Expenses Accrued logistic expenses [Member] Accrued logistic expenses. Loss for the year, attributable to the shareholders of the parent Profit/(loss) for the year Attributable to: Shareholders of the parent Net loss Items that may be reclassified to consolidated statement of operations in subsequent periods (net of tax): Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] Decrease/(increase) in inventories Adjustments for decrease (increase) in inventories SEK/GBP S E K G B P [Member] SEK/GBP. Finance income and expenses Disclosure of finance income (cost) [text block] Inventories Description of accounting policy for measuring inventories [text block] EIF facility. E I F Facility [Member] EIF Facility Stock Options Stock Options [Member] Stock options member. Provisions Provisions [Member] Provisions. Counterparties [member] Derivatives (part of 'Other current liabilities') Derivatives (part of other current liabilities) Current derivative financial liabilities Derivatives Percentage of impact of increasing volatility on convertible notes Percentage of impact of increasing volatility on convertible notes Changes in fair value Increase (decrease) in fair value measurement, liabilities Total increase (decrease) in fair value measurement, liabilities Provisions Disclosure of provisions [text block] Total Cash and cash equivalents Cash and cash equivalents at January 1 Cash and cash equivalents at December 31 Cash and cash equivalents Basic loss per share, U.S. $ Basic earnings/(loss) per share, US $ Basic earnings (loss) per share Total basic earnings (loss) per share Proceeds from exercise of warrants Proceeds from exercise of warrants Finance income and expenses. Finance Income and Expenses Finance income and expenses, net Non-controlling interests Profit (loss), attributable to non-controlling interests Value added tax Current value added tax receivables Noncurrent Receivables [line items] Noncurrent receivables. Conversion of the convertible notes if the last reported sale price of the company ADSE equals or exceeds 200% The company may require conversion of the convertible notes if the last reported sale price of the company adse equals or exceeds 200%. Impact of increasing expected term Impact Of Increasing Expected Term Impact of increasing expected term. Local Phone Number Local Phone Number Carrying amount [member] Carrying amount [member] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant accounting policies. Statement Of Changes In Equity [Table] Statement of changes in equity [table] Total finance expenses Finance expenses Finance costs Change in unrecognized deferred taxes Increase Decrease In Unrecognized Deferred Taxes Increase decrease in unrecognized deferred taxes. Aggregate principal amount of convertible debt Aggregate Principal Amount of Convertible Debt Aggregate principal amount of convertible debt. SEK/CNY Exchange Rate S E K Vs C N Y Exchange Rate [Member] SEK/CNY exchange rate. Summary of accounting policies Disclosure of summary of accounting policies [text block] Disclosure of summary of accounting policies. Nine point two five fonvertible senior PIK notes due two thousand twenty eight. Nine Point Two Five Convertible Senior PIK Notes Due Two Thousand Twenty Eight [Member] 9.25% Convertible Senior PIK Notes due 2028 Total intangible assets and goodwill Intangible assets Beginning balance Ending balance Intangible assets and goodwill Current lease liabilities (Note 16) Lease liabilities Current lease liabilities 1-30 Days Past Due Past Due Less Than Three Months [Member] Past due less than three months. Summary of Allowance for Expected Credit Losses of Trade Receivables Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [text block] Intangible assets, estimated useful life Useful life measured as period of time, intangible assets other than goodwill Significant accounting judgments, estimates and assessments Disclosure of accounting judgements and estimates [text block] Weighted average exercise price of share options expired in share-based payment arrangement Weighted average exercise price, Expired Summary of Tax Loss Carryforwards Disclosure Of Tax Loss Carryforwards Explanatory Disclosure of tax loss carryforwards. Difference between carrying amount and the amount the Company is contractually obligated to pay to holders of Convertible Notes at maturity Difference between carrying amount of financial liability and amount contractually required to pay at maturity to holder of obligation Other current liabilities Disclosure of other current liabilities [text block] Other Contributed Capital Additional paid-in capital [member] Cost of inventories recognized as expense during period Cost of inventories recognised as expense during period Non-cash impairments Impairment loss on financial assets Summary of Property, Plant and Equipment Disclosure of detailed information about property, plant and equipment [text block] Document Annual Report Document Annual Report Fair value changes on Convertible Notes Fair Value Changes On Convertible Notes Fair value changes on convertible notes. Other Other Countries [Member] Other Countries. Singapore SINGAPORE At December 31, 2023 At December 31, 2022 Current provisions Total current provisions Provisions Lowest potential reset price March 2024 before customary anti dilution adjustments Lowest Potential Reset Price March 2024 Before Customary Anti Dilution Adjustments Lowest potential reset price March 2024 before customary anti dilution adjustments Convertible debt original discount rate Convertible Debt Original Discount Rate Convertible debt original discount rate. Purchase of short-term investments Purchase Of Short Term Investments Purchase of short term investments. Fair Value Reserve Fair value reserve. Summary of Trade Receivables Disclosure Of Detailed Information About Trade Receivables Table [Text Block] Disclosure of detailed information about trade receivables. Level 3 Level 3 of fair value hierarchy [member] Currency derivatives Currency Derivatives Currency derivatives. Other Reserves Other reserves [member] Other current liabilities Total Other current liabilities Other current liabilities Impact on loss before tax, decrease Decrease In Loss Before Tax Due To Changes In Fair Value From Short Term Investments Increase in loss before tax due to changes in fair value from short-term investments. Convertible debt interest rate Convertible Debt Interest Rate Convertible debt interest rate. Sustainability loan Sustainability Loan Sustainability loan. Finance expenses Adjustments for finance costs Capitalized Software Computer software [member] Disclosure Of Noncurrent Provisions [Table] Disclosure Of Noncurrent Provisions [Table] Disclosure of noncurrent provisions. Impairment Impairment on right of use assets Impairment on right of use assets. Disclosure Of Employee Benefits Abstract Disclosure Of Employee Benefits [Abstract] Diluted loss per share, U.S. $ Diluted Diluted earnings (loss) per share Total diluted earnings (loss) per share Customers [member] Oatly Inc Oatly Inc [Member] Oatly Inc Accrued Expenses [Line Items] Accrued Expenses [Line Items] Accrued expenses line items. Loss for the year Net loss Loss for the year Profit (loss) Number of B Shares Number Of B Shares [Member] Number of B shares. Employee Benefits Expenses By Function [Line Items] Employee Benefits Expenses By Function [Line Items] Employee benefits expenses by function. Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Table] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Total Increase Decrease In Risk Exposure Increase decrease in risk exposure. Total Other non-current liabilities Other non-current liabilities Commitments and contingencies Disclosure of commitments and contingent liabilities [text block] Disclosure Of Depreciation Charge Of Right Of Use Assets [Line Items] Disclosure Of Depreciation Charge Of Right Of Use Assets [Line Items] Disclosure of depreciation charge of right-of-use assets. Percentage of impact of decreasing expected volatility Percentage Of Impact Of Decreasing Expected Volatility Percentage of impact of decreasing expected volatility. Impairment charges related to discontinued construction of certain production facilities (Note 14,15,16,17,21) Impairment charges related to discontinued construction of certain production facilities Impairment charges related to discontinued construction of certain production facilities. Income tax Disclosure of income tax [text block] Description of accounting policy for termination benefits [text block] Provision for restructuring costs Other non-current liabilities Other non-current financial liabilities Discontinuance of Construction of New Production Facility In Peterborough UK Discontinuance of construction of new production facility in Peterborough UK [Member] Discontinuance of construction of new production facility in Peterborough UK. Convertible Notes Convertible instruments [member] Sustainable revolving credit facility agreement, increase in undrawn amount Undrawn borrowing facilities Convertible Notes Disclosure of Convertible Notes Explanatory The disclosure of convertible notes. Unobservable inputs [member] Commitments And Contingencies [Abstract] Commitments and contingencies. Transaction costs Borrowing costs recognised as expense Disclosure of terms and conditions of share-based payment arrangement [abstract] Converted to shares Decrease Through Shareholder Loans Arising From Conversion To Shares Decrease through shareholder loans arising from conversion to shares. Categories of financial liabilities [axis] Categories of financial liabilities [axis] 31-60 Days Past Due Past Due More Than One Month But Less Than Two Months [Member] Past due more than one month but less than two months. Total unrecognized deferred tax assets Deductible temporary differences for which no deferred tax asset is recognised Document Financial Statement Error Correction [Flag] Cash flows Increase (decrease) through financing cash flows, liabilities arising from financing activities Other non-current liabilities Disclosure of other non-current liabilities [text block] Issue of Convertible Notes Issue of convertible instruments Decreases Right-of-use assets, increase (decrease) in revaluation surplus Total retained earnings Accumulated deficit Retained earnings City Area Code City Area Code Shareholder Loans [Abstract] Shareholder loan. Number of operating segments of which impairment tests is to be performed for non-financial assets. Number Of Operating Segments of which Impairment Tests is to be Performed for Non-Financial Assets Number of operating segments of which impairment tests is to be performed for non-financial assets Non-current liabilities Non-current liabilities [abstract] Leases Description of accounting policy for leases [text block] Document Information [Line Items] Document Information [Line Items] Oatly Food Co Ltd Oatly Food Co Ltd [Member] Oatly Food Co Ltd Percentage amount by which value assigned to pre-tax discount rate increase in order for recoverable amount to be equal to carrying amount. Percentage Amount By Which value assigned to pre-tax discount rate increase in order for recoverable amount to be equal to carrying amount Percentage amount by which value assigned to pre-tax discount rate increase in order for recoverable amount to be equal to carrying amount Percentage of impact of decreasing Risk-free interest rate on convertible notes Percentage of impact of decreasing Risk-free interest rate on convertible notes. Total non-derivatives Non Derivate Financial Liabilities Undiscounted Cashflows Non derivate financial liabilities undiscounted cashflows. Ogden and Utah Ogden And Utah [Member] Ogden and Utah. Grant date fair value, Granted Weighted average fair value at measurement date, other equity instruments granted Accrued Variable Consideration Accrued Variable Consideration [Member] Accrued variable consideration. Summary of Principal Subsidiaries Disclosure Of Detailed Information About Significant Investments In Subsidiaries Explanatory The disclosure of detailed information about significant investments in subsidiaries. Summary of Aging of Groups Trade Receivables Disclosure of credit risk [text block] Total Prepaid expenses Current prepaid expenses Disclosure Of Depreciation Amortization And Impairment [Line Items] Disclosure Of Depreciation Amortization And Impairment [Line Items] Disclosure of depreciation, amortization and impairment. Net Exchange Rate Differences Disclosure of effect of changes in foreign exchange rates [text block] Summary of Loss per Share Earnings per share [text block] Unwinding of discount effect Increase through adjustments arising from passage of time, other provisions YYF Transaction YYF transaction [Member] YYF transaction. Estimated useful life Useful life measured as period of time, property, plant and equipment Interest expenses on shareholder loans Interest expense on other financial liabilities Lowest potential reset price March 2025 before customary anti dilution adjustments Lowest Potential Reset Price March 2025 Before Customary Anti Dilution Adjustments Lowest potential reset price March 2025 before customary anti dilution adjustments. Total non-current portion of non-current borrowings Non-current liabilities to credit institutions Liabilities to credit institutions Non-current portion of non-current borrowings Short-term investments Current investments Revenue recognition Description of accounting policy for recognition of revenue [text block] Risk-free interest rate (%) Risk free interest rate, share options granted Sale of Manufacturing Facilities Other disposals of assets [member] Contact Personnel Email Address Financial instruments, class [member] Financial instruments, class [member] Expense relating to leases of low-value assets that are not shown above as short-term leases Expense relating to leases of low-value assets for which recognition exemption has been used Bottom of Range Bottom of range [member] Interest income Interest income Change in fair value recognized in consolidated statement of other comprehensive loss Fair value changes on Convertible Notes attributable to changes in credit risks Change in fair value recognized in consolidated statement of other comprehensive loss Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability Current assets Current assets [abstract] Disposals Disposals, property, plant and equipment GBP/EUR Exchange Rate G B P Vs E U R Exchange Rate [Member] GBP/EUR exchange rate. Disclosure Of Property Plant And Equipment [Line Items] Disclosure of detailed information about property, plant and equipment [line items] Investing activities Cash flows from (used in) investing activities [abstract] Par value per share Share Capital Par Value Share capital par value. Effect of tax rates in foreign jurisdictions Tax effect of foreign tax rates Interest rate risk [member] Interest rate risk [member] Property, plant and equipment Property, plant and equipment [member] Property, plant and equipment [member] Continuing and discontinued operations [axis] Disclosure Of Detailed Information About Revenue And Earnings Before Interest Taxes Depreciation And Amortization Explanatory The disclosure of detailed information about revenue and earnings before interest, taxes, depreciation, and amortization. Summary of Revenue Adjusted EBITDA and EBITDA Document Fiscal Period Focus Document Fiscal Period Focus Disclosure of non-adjusting events after reporting period [abstract] SGD/CNY S G D C N Y [Member] SGD/CNY. UK UNITED KINGDOM Great Britain S-T deposits Short-term deposits Short-term deposits, classified as cash equivalents Right Of Use Assets [Table] Right Of Use Assets [Table] Right Of Use Assets Table. Initial public offering costs Description Of Accounting Policy For Initial Public Offering Costs Explanatory Description of accounting policy for initial public offering costs explanatory. Revenue from External Customers Revenue From External Customers [Member] Revenue from external customers. Exchange differences Exchange Differences On Right Of Use Assets Exchange differences on right of use assets. Income tax rate Applicable tax rate Net cash flows (used in)/from investing activities Net cash flows from (used in) investing activities Cash flows from (used in) investing activities Defined benefit plans [axis] Defined benefit plans [axis] Significant Accounting Judgments Estimates And Assessments [Table] Significant Accounting Judgments Estimates And Assessments [Table] Significant accounting judgments estimates and assessments. Buyer Parent. Buyer Parent Member Buyer Parent Exercise of warrants Increase (decrease) through exercise of warrants, equity Social security costs Key Management Personnel Compensation Social Security Contributions Key management personnel compensation social security contributions. Volatility decrease 10% Volatility decrease in fair value of convertible notes Volatility decrease in fair value of convertible notes. Loss/(gain) on disposal of property, plant and equipment and intangible assets Adjustments For Gain Loss On Disposals Property Plant And Equipment And Intangible Assets Adjustments for gain (loss) on disposals, property, plant and equipment and intangible assets. Types of risks [axis] Types of risks [axis] Impairments loss for outstanding trade receivables Impairment loss recognised in profit or loss, trade receivables Types of contracts [axis] Types of contracts [axis] TLB Credit Agreement T L B Credit Agreement [Member] T L B credit agreement. Finland FINLAND Other Other current payables Oatly UK Operations & Supply Ltd Oatly U K Operations Supply Ltd [Member] Oatly UK Operations & Supply Ltd. Share price decrease 30% Share price decrease in fair value of convertible notes Share price decrease in fair value of convertible notes. Building Two Building Two [Member] Building two. Short-term employee benefits Key management personnel compensation, short-term employee benefits Aggregated time bands [member] Aggregated time bands [member] Entity's total for segment consolidation items [member] Entity's total for segment consolidation items [member] Liabilities arising from financing activities [axis] Liabilities arising from financing activities [axis] Other financial expenses Other finance cost Cost of goods sold Cost of sales Summary of Carrying Amounts By Currency Disclosure Of Detailed Information About Carrying Amounts By Currency Disclosure of detailed information about carrying amounts by currency. Impairment loss/(gain) on trade receivables Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss, trade and other receivables Impairment loss on trade receivables Disclosure of exchange rate differences recognized Disclosure Of Detailed Information About Effect Of Changes In Foreign Exchange Rates Explanatory The disclosure of detailed information about the effect of changes in foreign exchange rates. Categories of related parties [axis] Categories of related parties [axis] Income taxes refund (paid) Income tax paid Income taxes paid (refund), classified as operating activities Aggregate continuing and discontinued operations [member] Classes of share capital [axis] Classes of share capital [axis] Purchase price received Sales price received in cash Received Sales Price Allocation Received sales price allocation. Summary of Reconciliation of Tax (Expense) Benefit and Accounting Loss Disclosure Of Detailed Information About Reconciliation Of Tax Expense And The Accounting Loss Explanatory Disclosure of detailed information about reconciliation of tax expense and the accounting loss. Decreases: included in the acquisition value of right-of-use assets Increase in existing provisions, other provisions Total current assets Current assets Total increase (decrease) in fair value measurement, assets Changes in fair value Increase (decrease) in fair value measurement, assets Changes in fair value Associates [axis] Associates [axis] Employee benefits settlement period Employee Benefits Settlement Period Employee benefits settlement period. Weighted average number of shares, Basic (thousands) Basic Weighted average number of ordinary shares used in calculating basic earnings per share Liabilities to credit institutions Description of accounting policy for financial liabilities [text block] At Amortized Cost Financial liabilities at amortised cost, category [member] Current liabilities Current liabilities [abstract] Summary of Number and Exercise Prices of Employee Stock Options Disclosure of number and weighted average exercise prices of share options [text block] Redemption of shares Redemption Of Shares Redemption of shares. Proportion of voting rights and shares held (directly or indirectly) (%) Proportion of voting rights held in subsidiary Number of share options expired in share-based payment arrangement Number of employees stock option ,Expired Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Litigation commitments Litigation Commitments Litigation commitments. (Increase)/decrease in trade receivables, other current receivables, prepaid expenses Adjustments for decrease (increase) in trade and other receivables Equity Share capital and other contributed capital Disclosure of share capital, reserves and other equity interest [text block] Business Contact Business Contact [Member] Percentage of revenues derived from customer Percentage of entity's revenue Summary of Employee Benefits Expenses by Function Disclosure of attribution of expenses by nature to their function [text block] Depreciation Depreciation charge of right-of-use assets Depreciation And Impairment Charge Right Of Use Assets Depreciation and impairment charge right of use assets. Disclosure of detailed information about borrowings [table] Consideration received in the form of promissory note Received Sales Price Consideration in the Form of Issued Promissory Note Received sales price consideration in the form of issued promissory note. Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items] Disclosure of reconciliation of liabilities arising from financing activities [line items] Statement of changes in equity [abstract] Repayment of shareholder loans in shares Repayment Of Advances And Loans Conversion To Ordinary Shares Repayment of advances and loans conversion to ordinary shares. Deferred Tax Credits Unused tax credits [member] Translation differences Increase (decrease) through net exchange differences, allowance account for credit losses of financial assets Single External Customer Single External Customer [Member] Single external customer. Ordinary shares issued to convert loan Shares Issued In Conversion Of Loan Shares issued in conversion of loan. Grant date fair value, Forfeited Weighted Average Fair Value At Measurement Date Other Equity Instruments Forfeited Weighted average fair value at measurement date other equity instruments forfeited. Summary of Convertible Notes Disclosure Of Detailed Information About Convertible Notes Explanatory Disclosure of detailed information about convertible notes Maturity date Maturity Borrowings, maturity Cover [Abstract] Shareholder loans Amounts payable to related party Shareholder loans Amounts payable, related party transactions Taxes Description of accounting policy for income tax [text block] After 5 Years Later than five years [member] Impact on loss before tax, decrease Decrease In Loss Before Tax Due To Borrowings Adjustment To Interest Rate Basis Decrease in loss before tax due to borrowings adjustment to interest rate basis. Document Fiscal Year Focus Document Fiscal Year Focus Document Accounting Standard Document Accounting Standard Consideration paid (received) Purchase price received Purchase price received Reconciliation of changes in allowance account for credit losses of financial assets [abstract] Non-current restructuring provision Non-current, Restructuring Lease right-of-use asset Lease Right of Use Asset [Member] Lease right of use asset. Current Trade Receivables [Line Items] Current Trade Receivables [Line Items] Current trade receivables line items. Disclosure Of Depreciation Charge Of Right Of Use Assets [Table] Disclosure Of Depreciation Charge Of Right Of Use Assets [Table] Disclosure of depreciation charge of right-of-use assets. Promissory Note Promissory Note [Member] Promissory note. Line items by function [member] Line items by function [member] Total depreciation/amortization/impairment by function Amortisation, intangible assets other than goodwill Amortization charge Amortisation, intangible assets other than goodwill Base Rate with Floor Rate Base Rate With Floor Rate [Member] Base Rate With Floor Rate. C M B Credit Facility [Member] C M B Credit Facility [Member] CMB Credit Facility Cash and cash equivalents Disclosure of cash and cash equivalents [text block] Components of equity [axis] Components of equity [axis] Purchase obligations Purchase Obligations Purchase obligations. Proceeds from financial instruments Proceeds from sales or maturity of financial instruments, classified as investing activities Total deferred tax Deferred tax expense (income) Received sales price consideration in cash Received Sales Price Consideration in Cash Received sales price consideration in cash. Derivatives Derivative financial assets Grant date fair value, Beginning balance Grant date fair value, Ending balance Weighted Average Fair Value At Measurement Date Other Equity Instruments Outstanding Weighted average fair value at measurement date other equity instruments outstanding. Percentage amount by which value assigned to terminal growth rate must decrease in order for unit's recoverable amount to be equal to carrying amount. Percentage Amount by which Value Assigned to Terminal Growth Rate Must Decrease in Order for Unit's Recoverable Amount to be Equal to Carrying Amount Percentage amount by which value assigned to terminal growth rate must decrease in order for unit's recoverable amount to be equal to carrying amount Convertible notes interest rate Convertible Notes Interest Rate Convertible notes interest rate TLB Credit Agreement Term loan B credit agreement. Term Loan B Credit Agreement [member] Term Loan B Credit Agreement Security Exchange Name Security Exchange Name Shareholder loans Disclosure Of Detailed Information About Shareholder Loans Explanatory Disclosure of detailed information about shareholder loans explanatory. Basis of preparation Disclosure of basis of preparation of financial statements [text block] Foreign exchange adjustments Increase (decrease) through effect of changes in foreign exchange rates, liabilities arising from financing activities Other Other Receivables Current Other receivables current. Net cash flows from (used in) operating activities Net cash flows used in operating activities Cash flows from (used in) operating activities Properties Properties [Member] Properties. Expected increase in commodity cost due to increase in general commodity cost price Expected Increase Decrease In Commodity Cost Due To Increase In General Commodity Cost Price Expected increase (decrease) in commodity cost due to increase in general commodity cost price. Defined benefit plans [member] Defined benefit plans [member] Liabilities directly associated with assets held for sale Liabilities included in disposal groups classified as held for sale Liabilities directly associated with assets held for sale Financial assets, category [member] Financial assets, category [member] Institutional Investors [Member] Institutional Investors [Member] Institutional Investors Changes in working capital: Changes In Working Capital [Abstract] Changes in working capital. Depreciation and amortization Total depreciation/amortization Total depreciation/amortization Depreciation and amortisation expense Shares issued in exercise of warrants Shares Issued In Exercise Of Warrants Shares issued in exercise of warrants. Fair Value through Profit or Loss Financial liabilities at fair value through profit or loss, category [member] Net assets directly associated with disposal group. Net Assets Directly Associated With Disposal Group Net assets directly associated with disposal group Granted May May 2021 Granted On May Two Thousand Twenty One [Member] Granted on May Two Thousand Twenty One. EMEA and Americas Segments EMEA and Americas Segments [Member] EMEA and Americas segments member. Current tax: Current tax expense (income) and adjustments for current tax of prior periods [abstract] Number of operating segments aggregated to form reportable segments Number Of Operating Segments Aggregated To From Reportable Segments The number of operating segments aggregated to form reportable segments. Cash flow extrapolated period using estimated some growth rate percentage Cash Flow Extrapolated Period Using Estimated Some Growth Rate Percentage Cash flow extrapolated period using estimated some growth rate percentage. Depreciation expense Depreciation expense Costs related to the YYF Transaction Costs Related To The YYF Transaction Costs related to the YYF transaction. Classes of intangible assets other than goodwill [axis] Classes of intangible assets other than goodwill [axis] Summary of Consolidated Statement of Financial Position Amounts Relating to Leases Disclosure Of Consolidated Statement Of Financial Position Amounts Relating To Leases Explanatory The disclosure of consolidated statement of financial position amounts relating to leases. Entity Emerging Growth Company Entity Emerging Growth Company Types of antidilutive instruments [axis] Prepaid financing expenses Prepaid Financing Expenses Prepaid financing expenses. Right Of Use Assets [Line Items] Right Of Use Assets [Line Items] Right of use assets line items. Loans to related parties Amounts receivable, related party transactions Credit loss reserve recognized Credit Loss Reserve Recognized Credit loss reserve recognized. Amendment Flag Amendment Flag Expected term (years) Option life, share options granted Total equity Beginning balance Ending balance Equity Entity's total for associates [member] Entity's total for associates [member] Summary Of Other Current Receivables Disclosure Of Detailed Information About Other Current Receivables The Disclosure of detailed information about other current receivables GBP/EUR G B P E U R [Member] GBP/EUR. Document Shell Company Report Document Shell Company Report Number of supplier contracts Number Of Supplier Contracts Number of supplier contracts. Amount recognized for compensation Directors' remuneration expense Liabilities to credit institutions Liabilities To Credit Institutions Liabilities to credit institutions. Fixtures Fixtures and fittings [member] Total finance income Finance income Finance income Impairment Impairment loss recognised in other comprehensive income, intangible assets other than goodwill Impairment loss recognised in other comprehensive income, intangible assets other than goodwill Retail Retail Channel [Member] Retail channel. Proceeds from sale of assets held for sale Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations Deferred tax assets Net deferred tax assets Net Deferred Tax Liability Asset Net deferred tax liability asset. Financial assets at beginning of period Financial assets at end of period Total financial assets Total financial assets Financial assets Oy Oatly AB Oy Oatly A B [Member] Oy Oatly AB. Lease liabilities Total Lease obligations Lease liabilities Past due status [axis] Past due status [axis] Proceeds from short-term investments Cash flows from (used in) decrease (increase) in short-term deposits and investments Operating Segments Operating segments [member] Expected life increase 12 months Expected Life Increase In Fair Value Of Warrants Granted Expected life increase in fair value of warrants granted. Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items] Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Tangible assets Description of accounting policy for property, plant and equipment [text block] Accrued Personnel Expenses Accrued Personnel Expenses [Member] Accrued personnel expenses member. Other receivables Total Other current receivables Other current receivables Aggregated income tax relating to components of other comprehensive income Tax effect relating to net investment in foreign operations recognized in Other comprehensive loss Income tax relating to components of other comprehensive income Pension and post-employment benefits Premium expenses Post-employment benefit expense, defined contribution plans Non-controlling interests Non-controlling interest expense Non-controlling interests. Lease commencement date Lease Commencement Date Lease commencement date. Non-deductible costs Tax effect of expense not deductible in determining taxable profit (tax loss) Agreement reset term. Agreement reset term Impact on loss before tax Sensitivity Analysis For Translation Exposure Risk Reasonably Possible Change In Risk Variable Impact On Loss Before Tax Due To Ten Percent Increase Decrease Sensitivity analysis for translation exposure risk reasonably possible change in risk variable impact on loss before tax due to ten percent increase decrease. Entity File Number Securities Act File Number Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] Deferred tax assets Deferred tax assets Deferred tax assets Disclosure Of Deferred Tax Assets Have Not Been Recognized [Line Items] Disclosure Of Deferred Tax Assets Have Not Been Recognized [Line Items] Disclosure of deferred tax assets have not been recognized. Statement of financial position [abstract] SEK/SGD S E K S G D [Member] SEK/SGD. Entity Addresses, Address Type Entity Addresses, Address Type [Axis] Total Other non-current receivables Depreciation of property, plant and equipment and right-of-use assets and amortization of intangible assets Adjustments for depreciation and amortisation expense Additional provisions recognized Additional provisions, other provisions Total additional provisions, other provisions Additional provisions recognized Convertible Notes [Line items] Convertible notes. Depreciation and amortisation expense [abstract] Percenatge of Interest rate of promissory notes. Percentage of Interest rate of promissory Notes Percentage of Interest rate of promissory Notes Liabilities To Credit Institutions [Line Items] Liabilities To Credit Institutions [Line Items] Liabilities to credit institutions. Term loan facility. Term loan facility Attributable to: Comprehensive income attributable to [abstract] Equity attributable to shareholders of the parent Equity attributable to owners of parent Two Existing Production Plants Two Existing Production Plants [Member] Two existing production plants.. Option to extend sustainability loan Option To Extend Sustainability Loan Option to extend sustainability loan. Fair value of currency derivatives Fair Value Of Currency Derivatives Fair value of currency derivatives. Summary of Model Inputs for Warrants Granted Disclosure Of Model Inputs For Warrants Granted Explanatory Disclosure of model inputs for warrants granted explanatory. Employee Benefits Expenses By Function [Table] Employee Benefits Expenses By Function [Table] Employee benefits expenses by function. Asset impairment charge and other costs related to assets held for sale. Asset impairment charge and other costs related to assets held for sale Asset impairment charge and other costs related to assets held for sale Reversal of non-utilized amounts Reversal of non-utilized amounts Unused provision reversed, other provisions Costs related to the YYF Transaction Costs related to related party transaction Costs related to related party transaction Unallocated Amounts Unallocated amounts [member] Non-controlling Interests Non-controlling interests [member] Current liabilities to credit institutions Current portion of non-current borrowings TLB Credit Agreement and the SRCF Agreement Term Loan B Credit Agreement and Sustainable Revolving Credit Facility Agreement [Member] Term loan B credit agreement and sustainable revolving credit facility agreement. Germany GERMANY Fair value changes on derivatives Net gains (losses) on change in fair value of derivatives Fair value changes derivatives Gains (losses) on change in fair value of derivatives Americas [Member] Americas Derivatives (part of other current receivables) Derivatives (part of 'current receivables') Current derivative financial assets Sold Retirements, property, plant and equipment Summary of RSUs Outstanding and Related Information Disclosure Of Restricted Stock Units Outstanding And Related Information Explanatory Disclosure of RSUs outstanding and related information. Repayment of shareholder loans Repayment of shareholder loans Cash repayments of advances and loans from related parties Base Rates [member] Base Rates [member] Base rate Long term financing Term Loan One Term loan one. Term loan facility, Amount Auditor Location Auditor Location Goodwill Goodwill [member] Cost of Goods Sold Cost of sales [member] Disclosure Of Transactions Between Related Parties [Line Items] Disclosure of transactions between related parties [line items] Less than 3 Months Not later than three months [member] Additions Additions other than through business combinations, property, plant and equipment Entity Shell Company Entity Shell Company Segment reporting Description of accounting policy for segment reporting [text block] Headquarters office. Headquarters office [Member] Headquarters Office Total Employee benefits expense Total employee benefits expense Employee benefits expense Oatly Germany GmbH Oatly Germany Gmb H [Member] Oatly Germany GmbH. Summary of Impact of Input Assumptions Changes in Fair Value Per Employee Stock Option Disclosure Of Impact Of Input Assumptions Changes In Fair Value Per Employee Stock Option Explanatory Disclosure of impact of input assumptions changes in fair value per employee stock option. Interest paid Interest paid Interest paid, classified as operating activities Summary of Impact of Key Inputs and Assumptions on the Fair Value of the Convertible Notes Disclosure Of Information About Impact Of Key Inputs And Assumptions On The Fair Value Of The Convertible Notes Explanatory Disclosure of information about impact of key inputs and assumptions on the fair value of the convertible notes explanatory. Oatly Netherlands BV Oatly Netherlands B V [Member] Oatly Netherlands BV. Trade receivables Description of accounting policy for trade and other receivables [text block] Increase of allowance recognized in statement of operations during the year Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets At Sweden’s corporate income tax rate of 20.6% (21.4%) Tax expense (income) at applicable tax rate Interest expenses on Convertible Notes Interest expenses on Convertible Notes Interest expense on debt instruments issued Number of members of key management. Number Of members of key management Number of members of key management Trade Receivables [Abstract] Trade receivables abstract. Discount rate applied to cash flow projections Pre-tax discount rate used Pre-tax discount rate Entity Address, Address Line One Entity Address, Address Line One SEK/SGD Exchange Rate S E K Vs S G D Exchange Rate [Member] SEK/SGD exchange rate. Employee stock options (ESOPs) and Restricted Stock Units (RSUs) Employee Stock Options And Restricted Stock Units [Member] Employee stock options and restricted stock units. Disclosure Of Financial Risk Management [Table] Disclosure Of Financial Risk Management [Table] Disclosure of financial risk management. Deferred tax: Deferred tax expense (income) [abstract] Interest rate swap contract [member] Interest rate swap contract [member] Non-current assets Non-current assets other than financial instruments, deferred tax assets, post-employment benefit assets, and rights arising under insurance contracts Disclosure Of Property Plant And Equipment [Table] Disclosure of detailed information about property, plant and equipment [table] Term Loan One Term Loan One [Member] Term loan one member. July 2023 Granted On July Two Thousand Twenty Three [Member] Granted On July Two Thousand Twenty Three. Settling period of current liability Settling Period Of Current Liability Settling period of current liability. Total shortfall expenses. Total shortfall expenses Risk-free interest rate Description Of Risk Free Interest Rate Warrants Granted Description of risk free interest rate warrants granted. Expense relating to short-term leases Expense relating to short-term leases for which recognition exemption has been used Alecta Alecta [Member] Alecta. Existing Shareholders Nativus Company Limited Verlinvest and Blackstone Funds [Member] Existing Shareholders Nativus Company Limited Verlinvest and Blackstone Funds [Member] Existing Shareholders, Nativus Company Limited, Verlinvest and Blackstone Funds Liabilities To Credit Institutions And Available Facilities Liabilities To Credit Institutions And Available Facilities [Member] Liabilities to credit institutions and available facilities member. Percentage of insurance obligations in collective consolidation level Percentage Of Insurance Obligations In Collective Consolidation Level Percentage of insurance obligations in collective consolidation level. Basis of consolidation Disclosure of basis of consolidation [text block] Other non-current receivables Disclosure Of Other Non Current Receivable Disclosure of other non current receivable. Summary of Deferred Tax Assets Not Been Recognized Disclosure Of Deferred Tax Assets Have Not Been Recognized Explanatory Disclosure of deferred tax assets have not been recognized. Asset Retirement Obligations Asset Retirement Obligations [Member] Asset retirement obligations. Reconciliation of changes in deferred tax liability (asset) [abstract] Incentive Award Plan 202. Incentive Award Plan 2021 [member] 2021 Incentive Award Plan Deferred tax assets Net deferred tax assets Amount by which value assigned to key assumption must change in order for unit's recoverable amount to be equal to carrying amount Amount by which value assigned to key assumption must change in order for unit's recoverable amount to be equal to carrying amount Share price increase 10% Share Price Increase In Fair Value Of Warrants Granted Share price increase in fair value of warrants granted. Summary of Warrants Granted Disclosure Of Summary Of Warrants Granted Explanatory Summary of warrants granted. Employee benefits Description of accounting policy for employee benefits [text block] Number of instruments, Beginning balance Number of instruments, Ending balance Number of other equity instruments outstanding in share-based payment arrangement Warrants outstanding Disclosure of non-current assets or disposal groups classified as held for sale [text block] Non-current assets held for sale Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Average exercise price per share Exercised during the period Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement Finance income Adjustments for finance income Summary of Other Operating Income and (Expenses), Net Disclosure of other operating income (expense) explanatory1. Disclosure Of Other Operating Income Expense Explanatory1 Exchange differences Increase (decrease) through net exchange differences, deferred tax liability (asset) Dallas-Fort Worth Facility. Dallas-Fort Worth Facility [Member] DFW Facility EBITDA Earnings Before Interest Taxes Depreciation And Amortization Earnings before interest, taxes, depreciation, and amortization. Employee stock options Number Of Outstanding Employee Stock Options Number of outstanding employee stock options. Peterborough, UK Peterborough, United Kingdom Peterborough [Member] Peterborough. HH Notes HH Notes [member] HH notes. Accrued expenses Accrued Expenses Explanatory Accrued expenses explanatory. Geographical areas [member] Geographical areas [member] Production Plants One Production Plants One [Member] Production plants one. Impairment of receivable due to the decision to discontinue the construction of new production facility Impairment of receivable due to the decision to discontinue the construction of new production facility. Ongoing Development Costs Intangible assets under development [member] Disclosure Of Financial Instruments [Line Items] Disclosure of detailed information about financial instruments [line items] Disclosure Of Nature And Extent Of Risks Arising From Financial Instruments [Table] Disclosure of nature and extent of risks arising from financial instruments [table] Estimated Useful Life of Property, Plant and Equipment Disclosure Of Estimated Useful Life Of Property Plant And Equipment Explanatory Disclosure of estimated useful life of property, plant and equipment explanatory. Title of 12(b) Security Title of 12(b) Security Related party transactions [abstract] Statement of cash flows [abstract] Number of warrants, Exercised during the period Number Of Warrants Exercised Number of warrants exercised. Earnings Per Share [Table] Earnings per share [table] Summary of Cash and Cash Equivalents Disclosure Of Detailed Information About Cash And Cash Equivalents Explanatory The disclosure of detailed information about cash and cash equivalents. Lease extension option period Lease Extension Option Period Lease extension option period. Other provisions [member] Other provisions [member] Short-term credit facility utilized Short Term Credit Facility Utilized Short-term credit facility utilized. 61-90 Days Past Due Past Due More Than Two Months But Less Than Three Months [Member] Past due more than two months but less than three months. Shareholders’ contributions Increase through other contributions by owners, equity Description of accounting policy for decommissioning, restoration and rehabilitation provisions [text block] Provision for restoration costs Embedded Leases Embedded Leases [Member] Embedded leases. Lease liabilities Gross lease liabilities Treasury shares Treasury shares Impairment charge Asset impairment charge Impairment loss Asset impairment Summary of Intangible Assets Disclosure of reconciliation of changes in intangible assets and goodwill [text block] Extended lease term extension date Extended Maximum Lease Term Extension Date Extended maximum lease term extension date. Promissory notes Promissory Notes Non Current Receivables Promissory notes non current receivables. All levels of fair value hierarchy [member] All levels of fair value hierarchy [member] Number of warrants, Redeemed during the year Number Of Warrants Redeemed Number of warrants redeemed. Summary of Other Non-current Liabilities Disclosure Of Detailed Information About Other Non Current Liabilities Explanatory Disclosure of detailed information about other non-current liabilities. Entity Address, Country Entity Address, Country Shares used in computation Weighted average comon shares outstanding: Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract] Types of interest rates [axis] Types of interest rates [axis] Loss per share Disclosure of earnings per share [text block] Loss per share Description of accounting policy for earnings per share [text block] Lease [Abstract] Lease. Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] Classes of other provisions [axis] Classes of other provisions [axis] Corporate information Disclosure of general information about financial statements [text block] Disclosure of nature and extent of risks arising from financial instruments [abstract] Segment information Disclosure of entity's operating segments [text block] Entity's total for related parties [member] Entity's total for related parties [member] Borrowings by name [member] Borrowings by name [member] SEK/NOK Exchange Rate S E K Vs N O K Exchange Rate [Member] SEK/NOK exchange rate. Shareholder Loans [Table] Shareholder Loans [Table] Shareholder loans. Temporary difference, unused tax losses and unused tax credits [member] Temporary difference, unused tax losses and unused tax credits [member] Net Interest Expense Carried Forward Net Interest Expense Carried Forward [Member] Net interest expense carried forward. Borrowing costs capitalized Borrowing costs capitalised Total current tax Current tax expense (income) and adjustments for current tax of prior periods Prepayment of obligation amount. Prepayment Of Obligation Amount Obligation amount prepaid Fair Value through Profit or Loss Financial assets at fair value through profit or loss, category [member] Expected life decrease 12 months Expected Life Decrease In Fair Value Of Warrants Granted Expected life decrease in fair value of warrants granted. Related party disclosures Disclosure of related party [text block] Accrued Marketing and Sales Expenses Accrued Marketing And Sales Expenses [Member] Accrued marketing and sales expenses member. Percentage of quarterly tangible solvency ratio financial covenant level. Percentage of quarterly tangible solvency ratio financial covenant level. Operating loss Profit (loss) from operating activities Other Other Channel [Member] Other channel. Payment of loan transaction costs Payments for debt issue costs Share capital [member] Share capital [member] Total depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss Total depreciation/amortization/impairment by function Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss Discontinuance of Construction of New Production Facility in EMEA Segment Discontinuance of construction of new production facility in EMEA segment [Member] Discontinuance of construction of new production facility in EMEA segment. Right-of-use assets Beginning balance Ending balance Right-of-use assets Right-of-use assets (Note 16) Total financial assets at fair value through profit or loss Total Assets, Fair value through profit or loss Financial assets at fair value through profit or loss Floating Interest Rate Floating interest rate [member] Fair value changes on short-term investments Gains Losses On Change In Fair Value Of Changes Short Term Investments Gains losses on change in fair value of changes short-term investments. Disclosure Of Noncurrent Provisions [Line Items] Disclosure Of Noncurrent Provisions [Line Items] Disclosure of noncurrent provisions. Other operating income and (expenses), net Disclosure of other operating income (expense) [text block] Transaction with shareholders Increase (decrease) through transactions with owners, equity Disclosure of analysis of single amount of discontinued operations [abstract] Percentage of impact of increasing share price on convertible notes Percentage of impact of increasing share price on convertible notes Share price increase 30% Share price increase in fair value of convertible notes Share price increase in fair value of convertible notes. Total comprehensive loss for the year Comprehensive income Fair value adjustment percentage Fair Value Adjustment Percentage Fair value adjustment percentage. Disclosure of detailed information about intangible assets [abstract] Fair value of convertible notes at start Fair Value Of Convertible Notes At Start Fair value of convertible notes at start. Disclosure Of Amounts Recognized In Consolidated Statement Of Operations Explanatory Summary of Amounts Recognized in Consolidated Statement of Operations Disclosure of amounts recognized in consolidated statement of operations. Restructuring and other exit costs Expense of restructuring activities Restructuring costs Restructuring costs Assets at beginning of period Assets at end of period TOTAL ASSETS Assets Legal settlement expenses (Note 26) Legal settlement expenses Legal settlement expenses. Document Type Document Type Liabilities arising from financing activities [member] Liabilities arising from financing activities [member] Shareholder Loans [Line Items] Shareholder Loans [Line Items] Shareholder loans. Disclosure Of Financial Instruments [Table] Disclosure of detailed information about financial instruments [table] Short term lease term Short Term Lease Term Short term lease term. Convertible notes premium rate to the last reported sale price of company Ads Convertible notes interest rate Convertible Notes Premium Rate To The Last Reported Sale Price Of Company Ads Convertible notes premium rate to the last reported sale price of Company Ads. Production Equipment Production Equipment [Member] Production equipment. Basis points Promissory Notes Receivable Interest Rate Basis Promissory notes receivable interest rate basis. Other Current Receivables Abstract Other Current Receivables [Abstract] Derivatives Disclosure of maturity analysis for derivative financial liabilities [abstract] Deposits Long-term deposits Summary of Non-current Assets by Country Disclosure Of Detailed Information About Non Current Assets By Country Explanatory The disclosure of detailed information about non-current assets by country. Exercise price Weighted Average Exercise Price Of Employee Stock Options Outstanding In Sharebased Payment Arrangement Weighted average exercise price of employee stock options outstanding in sharebased payment arrangement. Group Organizational Restructuring Group Organizational Restructuring [Member] Group organizational restructuring. IPO preparation and transaction costs Initial Public Offering Preparation And Transaction Costs Initial public offering preparation and transaction costs. Entity Filer Category Entity Filer Category Credit Facility Credit Facility [Member] Credit facility member. Expected price volatility of the Company's shares (%) Expected volatility, share options granted Consideration received in the form of shared assets Consideration Received In The Form Of Shared Assets Consideration received in the form of shared assets. Lease liabilities Lease liabilities [abstract] Trade Receivables and Inventories Pledged as Collateral Trade Receivables And Inventories Pledged As Collateral [Member] Trade receivables and inventories pledged as collateral. Total Liabilities, At amortized cost Financial liabilities at amortised cost Percentage amount by which value assigned to long-term EBITDA margin must decrease in order for units recoverable amount to be equal to carrying amount. Percentage amount by which value assigned to long-term EBITDA margin must decrease in order for units recoverable amount to be equal to carrying amount. Percentage amount by which value assigned to long-term EBITDA margin must decrease in order for units recoverable amount to be equal to carrying amount Summary of Deferred Tax Disclosure of deferred taxes [text block] Real estate mortgages Property, plant and equipment, pledged as security Commitments initial margin percentage. Commitments initial margin percentage Foreign currency forward contracts- inflows Foreign Currency Forward Contracts Undiscounted Cash In Flows Foreign currency forward contracts undiscounted cash in flows. Convertible notes, maturity date. Convertible notes, maturity date Between 3 Months and 1 Year Later than three months and not later than one year [member] Disclosure of detailed information about borrowings [line items] Oatly UK Ltd Oatly U K Ltd [Member] Oatly UK Ltd. Trade and other non-current receivables [abstract] Maturity [axis] Maturity [axis] Types of customers [member] Types of customers [member] Description of lease extension option Information about lessee's exposure arising from extension options and termination options Loss before tax Loss before tax Profit (loss) before tax Chattel mortgages Collateral held permitted to be sold or repledged in absence of default by owner of collateral, at fair value Tax losses for which deferred tax asset recognized Tax Losses For Which Deferred Tax Asset Recognized Tax losses for which deferred tax asset recognized. Current liabilities Total current liabilities Current liabilities Segment consolidation items [axis] Segment consolidation items [axis] Liabilities to credit institutions balance, Net Borrowings After Original Issue Discount And Transaction Costs Borrowings after original issue discount and transaction costs. Interest rate types [member] Interest rate types [member] Disclosure Of Leases [Table] Disclosure Of Leases [Table] Disclosure of Leases. Subordinated Bridge Facilities Agreement Subordinated Bridge Facilities Agreement [Member] Subordinated bridge facilities agreement member. Relating to origination and reversal of temporary differences Deferred tax expense (income) relating to origination and reversal of temporary differences Expected dividend yield Expected Dividend As Percentage Warrants Granted Expected dividend as percentage warrants granted. Awards vesting description Description of vesting requirements for share-based payment arrangement Purchase of intangible assets Purchase of intangible assets Purchase of intangible assets, classified as investing activities Restricted Stock Units Restricted Stock Units [Member] Restricted stock units member. Other current receivables Disclosure Of Other Current Receivables Explanatory Disclosure of other current receivables. Total non-current assets Non-current assets Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant accounting policies. Depreciation charge Depreciation, property, plant and equipment Shareholder loans Shareholders Loans Shareholders loan. Description of employees borrowing rate Description Of Employees Borrowing Rate Description of employees borrowing rate. SEK/GBP Exchange Rate S E K Vs G B P Exchange Rate [Member] SEK/GBP exchange rate. Other costs related to discontinued construction of certain production facilities Other costs related to discontinued construction of certain production facilities Other costs related to discontinued construction of certain production facilities. Net Exchange Rate Differences Abstract Net Exchange Rate Differences [Abstract] Provision used, other provisions Provision used, other provisions Amounts used during the year Amounts used during the year Non-derivatives Disclosure of maturity analysis for non-derivative financial liabilities [abstract] Cash or cash equivalent unless restricted settling liability period Cash Or Cash Equivalent Unless Restricted Settling Liability Period Cash or cash equivalent unless restricted settling liability period. Risks [member] Risks [member] Geographical areas [axis] Geographical areas [axis] Financial assets Financial assets at fair value through profit or loss [abstract] Lease term for production plants Lease Term For Production Plants Lease term for production plants. Convertible notes interest rate, payable description Convertible notes interest rate, payable description. Convertible Notes Interest Rate, Payable Description Employee Stock Options Employee Stock Options [Member] Employee stock options. Undrawn bank overdraft facilities Undrawn Bank Overdraft Facilities Undrawn bank overdraft facilities. American Depositary Shares. American Depositary Shares [member] American Depositary Shares Other foreign jurisdictions tax losses member. Other Foreign Jurisdictions Tax Losses [Member] Other Foreign Jurisdictions Tax Losses Distribution costs Distribution costs Customer distribution costs Total current raw materials and current production supplies Raw materials and consumables Current raw materials and current production supplies Significant Accounting Judgments Estimates And Assessments [Abstract] Significant accounting judgments estimates and assessments. Percentage amount by which value assigned to pre-tax discount rate must increase in order for unit's recoverable amount to be equal to carrying amount. Percentage Amount by which Value Assigned to Pre-Tax Discount Rate Must Increase in Order for Unit's Recoverable Amount to be Equal to Carrying Amount Percentage amount by which value assigned to pre-tax discount rate must increase in order for unit's recoverable amount to be equal to carrying amount SOFR with Floor Rate S O F R With Floor Rate [Member] SOFR With Floor Rate. Lease Liabilities Leases Lease liabilities [member] Other Other Current Prepaid Expenses Other current prepaid expenses. Oatly EMEA AB Oatly E M E A A B [Member] Oatly EMEA AB. Losses on change in fair value of derivatives Losses on change in fair value of derivatives Loss in change in fair value Level 1 Level 1 of fair value hierarchy [member] Tax effect of revenues exempt from taxation Tax effect of revenues exempt from taxation Non-taxable income Other Other Unrecognized Deferred Taxes Assets [Member] Other unrecognized deferred taxes assets. Exchange differences Increase (decrease) through net exchange differences, other provisions Oatly Thousands of Island Co Ltd Oatly Thousands Of Island Co Ltd [Member] Oatly Thousands of Island Co Ltd Share-based payments Key management personnel compensation, share-based payment Financial liabilities, category [member] Financial liabilities, category [member] Summary of Expenses Arising from Share-based Payment Transactions Disclosure Of Expenses Arising From Share Based Payment Transactions Explanatory Disclosure of expenses arising from share-based payment transactions explanatory. Disclosure of detailed information about property, plant and equipment [abstract] Intangible assets Description of accounting policy for intangible assets and goodwill [text block] Restructuring provision [member] Restructuring Contact Personnel Name Contact Personnel Name Weighted average number of shares, Diluted (thousands) Diluted Weighted average number of ordinary shares used in calculating diluted earnings per share Liabilities in the consolidated statement of financial position Liabilities Liabilities [abstract] (Decrease)/increase in trade payables, other current liabilities, accrued expenses Adjustments for increase (decrease) in trade and other payables Disclosure Of Trade Receivables [Abstract] Disclosure of trade receivables. Other reserves Other reserves Oatly US Inc Oatly U S Inc [Member] Oatly US Inc Classes of current inventories [abstract] Property, plant and equipment Disclosure of property, plant and equipment [text block] Assets in the consolidated statement of financial position ASSETS Assets [abstract] Board of Directors Key management personnel of entity or parent [member] Sustainable Revolving Credit Facility Agreement SRCF Agreement Sustainable Revolving Credit Facility Agreement [Member] Sustainable revolving credit facility agreement. Trade receivables Disclosure Of Trade Receivables Explanatory Disclosure of trade receivables explanatory. Other comprehensive loss: Other comprehensive income [abstract] Maturity period of loans issued to employees Maturity Period Of Loans Issued To Employees Maturity period of loans issued to employees. Fair value changes (including interest expenses) recognized in the consolidated statement of operations Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets Total gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets Receivable relating to production equipment returned to a supplier due to decision to discontinue construction of new production facility Receivable relating to production equipment returned to a supplier due to decision to discontinue construction of new production facility. Percentage of impact of decreasing share price Percentage Of Impact Of Decreasing Share Price Percentage of impact of decreasing share price. Fair value less costs of disposal as part of the YYF Transaction. Fair Value Less Costs Of Disposal As Part Of The Yyf Transaction Member Fair Value Less Costs of Disposal as Part of YYF Transaction Market interest rate decrease 1% Market interest rate decrease in fair value of convertible notes Market interest rate decrease in fair value of convertible notes. Average number of members of management. Average number of members of management Average number of members of management Dallas-Fort Worth, Texas [Member] Dallas-Fort Worth, Texas [Member] Dallas-Fort Worth, Texas Revenues Total revenue Revenue Revenue Weighted average share price at grant date Weighted Average Share Price Warrants Granted Weighted average share price warrants granted. Non-controlling interests Comprehensive income, attributable to non-controlling interests Total comprehensive income, attributable to non-controlling interests Floating charges aggregate amount Floating charges securities Floating charges securities. Major Components of Income Tax (Expense) Benefit Disclosure Of Detailed Information About Major Components Of Income Tax Expense Explanatory Disclosure of detailed information about major components of income tax expense. Percentage of impact of increasing Risk-free interest rate on convertible notes Percentage of impact of increasing Risk-free interest rate on convertible notes. Product Recall Expense Product recall expense. Product recall Payment period by the customer in transfer of goods or services Payment Period By Customer In Transfer Of Goods Or Services Payment period by customer in transfer of goods or services. Analysis of income and expense [abstract] Categories of financial assets [axis] Categories of financial assets [axis] Disclosure of analysis of single amount of discontinued operations [line items] Finished goods Current finished goods Products and services [axis] Products and services [axis] Maturity Promissory Notes Receivable Nominal Interest Rate For First Year Promissory notes receivable nominal interest rate for first year. Accounts receivables Trade receivables Carrying amounts, by currency Trade receivables—net Current trade receivables Other comprehensive loss for the year Total other comprehensive loss for the year Other comprehensive income Total number of shares issued Number of shares issued Number of shares issued Number of employee stock options, Beginning balance Number of employee stock options, Ending balance Number of share options outstanding in share-based payment arrangement Statement of comprehensive income [abstract] Convertible notes interest rate, payable start date. Convertible Notes Interest Rate, Payable Start Date Convertible notes interest rate, payable start date Disclosure of defined benefit plans [abstract] Employee benefits expenses by function Employee Benefits Expenses By Function Employee benefits expenses by function. Volatility decrease 2% Volatility Decrease In Fair Value Of Warrants Granted Volatility decrease in fair value of warrants granted. Potentially dilutive securities not included in computation of diluted loss per share Potentially Dilutive Instruments Not Included In Computation Of Diluted Loss Per Share Potentially dilutive instruments not included in computation of diluted loss per share. North America North America [Member] Summary of Key Inputs and Assumptions Used in the Valuation Model for Fair Value of the Convertible Note Disclosure of information about key inputs and assumptions used in the valuation model for fair value of the Convertible Note explanatory Disclosure of information about key inputs and assumptions used in the valuation model for fair value of the Convertible Note explanatory Voting power description Voting Power Description Voting power description. Weighted average exercise price of share options exercisable in share-based payment arrangement Weighted average exercise price, Vested and exercisable