Upfront payments Upfront Payments [Member] Upfront Payments Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Statistical Measurement [Domain] Statistical Measurement [Domain] Total research and development cost share liability Financing Commitment, Carrying Value Financing Commitment, Carrying Value Purchase Price, ADS (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued In Period American Depository Shares Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period American Depository Shares Exercise Price Short-term restricted cash Short-term restricted cash Restricted Cash, Current Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Rental deposits and other Rental Deposits And Other Amount of rental deposits and other. IPO IPO [Member] Royalty Financing Obligation [Roll Forward] Royalty Financing Obligation [Roll Forward] Royalty Financing Obligation BRUKINSA BRUKINSA [Member] BRUKINSA [Member] Equity-method investments Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Schedule of Other Long-Term Liabilities Other Noncurrent Liabilities [Table Text Block] John V. Oyler Trading Arrangement, Sold By Mr. Oyler [Member] John V. Oyler Trading Arrangement, Sold By Mr. Oyler Intangible Asset, Acquired, Finite-Lived Intangible Asset, Acquired, Finite-Lived [Line Items] Recent accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Accounts payable Increase (Decrease) in Accounts Payable Debt portion of royalties recognized and settled to Royalty Pharma Royalty Sale Liability, Decrease For Royalties Recognized And Settled Royalty Sale Liability, Decrease For Royalties Recognized And Settled Offering period Share-based Compensation Arrangement by Share-based Payment Award, Offering Period Share-based Compensation Arrangement by Share-based Payment Award, Offering Period Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Product Revenue Revenue from Contract with Customer [Text Block] Net-current period other comprehensive income Other Comprehensive Income (Loss), Net of Tax Gain on fair value adjustment Fair Value, Option, Changes in Fair Value, Gain (Loss) Total short-term debt Total short-term debt Short-Term Debt Number of Ordinary Shares Issued ( in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Manufacturing equipment Manufacturing Equipment [Member] Manufacturing Equipment Adjustment to Compensation, Amount Adjustment to Compensation Amount Less: unamortized debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Other assets Increase (Decrease) in Other Operating Assets Consolidation Consolidation, Policy [Policy Text Block] Share-based compensation expenses Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Prepaid taxes Prepaid Taxes Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Total shareholders’ equity Balance at the beginning of period Balance at the end of period Equity, Attributable to Parent Other comprehensive income before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Total Share-Based Payment Arrangement, Expense Schedule of Property, Plant and Equipment, Net Property, Plant and Equipment [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Current assets: Assets, Current [Abstract] Total liabilities and shareholders’ equity Liabilities and Equity Sale of future royalty liability, non-current portion Long-Term Debt, Royalty Liability, Noncurrent Long-Term Debt, Royalty Liability, Noncurrent Other Licensing Agreements [Member] Liabilities and shareholders’ equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Amounts reclassified from accumulated other comprehensive loss Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Money market funds Cash and Cash Equivalents, Fair Value Disclosure Maximum cash and development services commitment Maximum Cash And Services Development Commitment Maximum Cash And Services Development Commitment Selling, general and administrative General and Administrative Expense [Member] Useful life Finite-Lived Intangible Asset, Useful Life Property and equipment Property, Plant and Equipment, Net [Abstract] Intangible assets, net Total Finite-Lived Intangible Assets, Net Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Accrued sales rebates and returns Accrued Sales Rebates and Returns [Roll Forward] Accrued Sales Rebates and Returns [Roll Forward] Debt Instrument Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Employee Share Purchase Plan 2018 Employee Share Purchase Plan 2018 [Member] The 2018 Employee Share Purchase Plan. Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Ordinary shares Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Other long-term liabilities Total Other Liabilities, Noncurrent Dropdown availability period Debt Instrument, Dropdown Availability Period Debt Instrument, Dropdown Availability Period Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] China CITIC Bank China CITIC Bank [Member] China CITIC Bank China Merchants Bank China Merchants Bank [Member] China Merchants Bank Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Accrued expenses and other payables Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Short-term debt Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Name Measure Name Collaborative Arrangement Compensation Type [Domain] Collaborative Arrangement Compensation Type [Domain] Collaborative Arrangement Compensation Type [Domain] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current [Abstract] Schedule of Total Compensation Cost Recognized Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Secured Debt Secured Debt [Member] Operating lease liabilities, current portion Operating Lease, Liability, Current Deferred tax liabilities Deferred Income Tax Liabilities, Net Software, electronics and office equipment Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Prepayment of property and equipment Prepayment Of Long Term Asset Amount of prepayment of long term asset. Novartis broad markets revenue Novartis Broad Markets Revenue [Member] Novartis Broad Markets Revenue Award Timing Method Award Timing Method [Text Block] Research and development expense Research And Development [Member] Research And Development Award Type [Axis] Award Type [Axis] Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Total long-term debt Total long-term debt Long-Term Debt Total assets Assets Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Investments [Domain] Investment, Name [Domain] Product Name [Axis] Product Name [Axis] Product Name [Axis] 2027 Finite-Lived Intangible Asset, Expected Amortization, Year One Trading Symbol(s) Trading Symbol Geographical [Domain] Geographical [Domain] Exercise of options, ESPP and release of RSUs (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Market Price, ADS (in dollars per share) Share Price, American Depository Shares Price of each American Depository Share. Each American Depositary Share represents 13 ordinary shares of the entity. Entity Address, City Entity Address, City or Town Short-term Debt, Type [Domain] Short-Term Debt, Type [Domain] Operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Description of Business, Basis of Presentation and Consolidation and Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Effect of foreign exchange rate changes, net Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted Share Units (RSUs) Restricted Stock Units (RSUs) [Member] Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] POBEVCY POBEVCY [Member] POBEVCY 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Four Impairment of equity investments Equity Method Investment, Other-than-Temporary Impairment Basic (in dollars per share) Basic (in dollars per share) Earnings Per American Depository Share, Basic Earnings per American Depository Share, basic Entity Emerging Growth Company Entity Emerging Growth Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding ROU assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Number of options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Schedule of Accrued Revenue Rebates and Returns Schedule of Accrued Sales Rebates and Returns Current [Table Text Block] Schedule of Accrued Sales Rebates and Returns Current [Table Text Block] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Equity-method investments Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Related Party Related Party [Member] Sale of future royalty liability, current portion Long-Term Debt, Royalty Liability, Current Long-Term Debt, Royalty Liability, Current Ordinary shares, shares outstanding (in shares) Shares outstanding at the beginning of period (in shares) Shares outstanding at the end of period (in shares) Common Stock, Shares, Outstanding Convertible debt instrument Investment In Debt Securities, Non Current Investment In Debt Securities, Non Current Plan Name [Axis] Plan Name [Axis] Other Other Assets, Fair Value Disclosure PEO PEO [Member] Schedule of Net Product Sales Schedule of Net Product Revenue Disaggregation of Revenue [Table Text Block] Supplemental non-cash information: Noncash Investing and Financing Items [Abstract] Interest income Investment Income, Interest Prepaid research and development costs Prepaid Research And Development Costs Amount of consideration paid in advance for research and development that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Entity number of employees Entity Number of Employees U.S. - total revenue UNITED STATES Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Accumulated Deficit Retained Earnings [Member] Prepaid expenses and other current assets Total Prepaid Expense and Other Assets, Current Interest rate, effective percentage Debt Instrument, Interest Rate, Effective Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash, cash equivalents, and restricted cash at beginning of period Cash, cash equivalents, and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax expense Income Tax Expense (Benefit) Re payment of loan percentage Debt Instrument, Basis Spread on Variable Rate Sale of Stock [Domain] Sale of Stock [Domain] Tax payable Taxes Payable, Current Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Required statutory reserve as a percentage of registered capital Restricted Net Assets, Required Statutory Reserve as Percentage of Registered Capital Required statutory reserve as a percentage of registered capital. Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Interest expense, excluding amortization of debt issuance costs Interest Expense, Debt, Excluding Amortization Property, plant and equipment, at cost Property, Plant and Equipment, Gross Short Term Bank Loan Maturing January 2029 Short Term Bank Loan Maturing January 2029 [Member] Short Term Bank Loan Maturing January 2029 Short Term Bank Loan Maturing July 2032 Short Term Bank Loan Maturing July 2032 [Member] Short Term Bank Loan Maturing July 2032 Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Net product revenues by geographic area Geographic Areas, Revenues from External Customers [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Discount on purchase price of common stock Share-based Compensation Arrangement by Share-based Payment Award, Discount on Purchase Price of Common Stock, Percent Share-based Compensation Arrangement by Share-based Payment Award, Discount on Purchase Price of Common Stock, Percent Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Accrual Rebate And Sales Return Rebate And Sales Return City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Less: rebates and sales returns Revenue From Contract With Customer, Rebate And Sales Return Revenue from Contract with Customer, Rebate and Sales Return All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Capitalized interest expense Interest Costs Capitalized Accrued expenses and other payables Total Accrued Liabilities, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Long Term Bank Loan Maturing July 2032 Long Term Bank Loan Maturing July 2032 [Member] Long Term Bank Loan Maturing July 2032 Investment in Equity Security Investment In Equity Security [Member] Investment In Equity Security Investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Other Adjustments Accumulated Other Comprehensive Loss, Other Adjustments [Member] Accumulated Other Comprehensive Loss, Other Adjustments Repayment of short-term loans Repayment of short-term loans Repayments of Short-Term Debt Long-term investments Long-Term Investments Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Term Debt Instrument, Term Collaborative Arrangement Compensation Type [Axis] Collaborative Arrangement Compensation Type [Axis] Collaborative Arrangement Compensation Type Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Selling, general and administrative Selling, General and Administrative Selling, General and Administrative Expenses [Member] Cost of sales - product Cost of Sales - Product Cost of Sales [Member] Equity securities with readily determinable fair values Equity Securities, FV-NI Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation expense Depreciation Money market funds Money Market Funds [Member] Earnings per share: Earnings Per Share, Basic and Diluted EPS [Abstract] Earnings Per Share, Basic and Diluted EPS 2026 (remainder of year) Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Schedule of Research and Development Arrangement, Contract to Perform for Others [Table] Research and Development, Contract to Perform for Others [Table] Equity Components [Axis] Equity Components [Axis] Pension liability Liability, Defined Benefit Pension Plan, Noncurrent Property, Plant and Equipment Property, Plant and Equipment [Line Items] Convertible debt instrument Convertible Debt [Member] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Sale of future royalty liability, non-current portion Other Long-Term Debt, Noncurrent Total Reimbursement Expense Reimbursement Expense Product revenue, net Product revenue Product [Member] Other long-term liabilities Other Liabilities, Noncurrent [Abstract] Maximum percentage of eligible earnings as after-tax withholdings to purchase ordinary shares Maximum Percentage of Eligible Earnings Set a Side to Purchase Ordinary Shares Maximum Percentage of Eligible Earnings Set a Side to Purchase Ordinary Shares Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] BeOne’s portion of the development funding Financing Commitment Expenses Financing Commitment Expenses Entity Address, Country Entity Address, Country Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition TEVIMBRA TEVIMBRA [Member] TEVIMBRA Investments Funding Commitment Investments Funding Commitment [Member] Investments Funding Commitment Related Party [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Equity securities with readily determinable fair values Equity Securities, FV-NI, Gain (Loss) Individual: Individual [Axis] China Construction Bank China Construction Bank [Member] China Construction Bank [Member] Total Restricted cash Restricted Cash Purchase of in-process research and development Payments To Purchase In-process Research And Development The cash outflows from the purchase of in-process research and development acquired in an exclusive license agreement. Novartis Novartis [Member] Novartis Research and development Research and Development Expense [Member] Earnings per ADS: Earnings Per Unit [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Inventories Inventories [Member] Interest portion of repayment for sale of future royalties Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of presentation and consolidation Basis of Accounting, Policy [Policy Text Block] Lender Name [Axis] Lender Name [Axis] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Repayment of long-term loan Repayments of long-term debt Repayments of Long-Term Debt Entity Interactive Data Current Entity Interactive Data Current Plan Name [Domain] Plan Name [Domain] Issuance of shares reserved for share option exercises (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Equity [Abstract] Number Of Authorized Shares, Not Disclosed Number Of Authorized Shares, Not Disclosed Number Of Authorized Shares, Not Disclosed Building Building [Member] Segment and Geographic Information Segment Reporting Disclosure [Text Block] Other Other [Member] Other Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Finite-Lived Intangible Assets Finite-Lived Intangible Assets [Line Items] Laboratory equipment Laboratory Equipment [Member] Represents information pertaining to laboratory equipment. Loan Facilities Loan Facilities [Member] Loan Facilities Payments Accrued Sales Rebates And Returns, Payment Accrued Sales Rebates And Returns, Payment Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Weighted Average Weighted Average [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Amortization of intangible assets Amortization of Intangible Assets Short-term restricted cash Restricted Cash and Cash Equivalent, Current Selling, general and administrative Selling, General and Administrative Expense Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Depreciation and amortization expense Depreciation, Depletion and Amortization Other non-current assets Total Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Other Other Sundry Liabilities, Noncurrent Work in process Inventory, Work in Process, Net of Reserves Other adjustments Other Comprehensive Income, Other, Net of Tax Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Europe - total revenue Europe [Member] Market Price, Ordinary (in dollars per share) Share Price Other investing activities Payment for (Proceeds from) Other Investing Activity Other items, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Share-Based Compensation Expense Share-Based Payment Arrangement [Text Block] Beginning balance Ending balance Revenue Recognition, Allowance For Chargebacks And Credit Loss And Reserves For Sales Returns, Rebates And Other Deductions Revenue Recognition, Allowance For Chargebacks And Credit Loss And Reserves For Sales Returns, Rebates And Other Deductions Assets Assets [Abstract] Long-term debt Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Three Other Commitments [Axis] Other Commitments [Axis] Weighted-average ADSs outstanding - basic (in shares) Weighted Average Number Of American Depository Shares Outstanding, Basic Weighted Average Number of American Depository Shares Outstanding Debt Instrument [Axis] Debt Instrument [Axis] Product revenue – gross Revenue From Contract With Customer, Excluding Assessed Tax, Gross Revenue from Contract with Customer, Excluding Assessed Tax, Gross Fair Value Measurements Fair Value Disclosures [Text Block] Credit Facility [Domain] Credit Facility [Domain] Gross carrying amount Finite-Lived Intangible Assets, Gross Shareholders’ equity: Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Research and Development [Abstract] Research and Development [Abstract] Proceeds from short-term loans Proceeds from Short-Term Debt Entity Address, Street Address Entity Address, Address Line One Entity Address, Street Address Two Entity Address, Address Line Two Research and development Research and development expense Research and Development Expense Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Investment, Name [Axis] Investment, Name [Axis] Operating lease liabilities, non-current portion Operating Lease, Liability, Noncurrent Increase in uncertain tax position Unrecognized Tax Benefits, Period Increase (Decrease) Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures [Abstract] Exercise of options, ESPP and release of RSUs (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net, Reduction Of Issued Capital Stock Issued During Period, Shares, Restricted Stock Award, Net, Reduction Of Issued Capital Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] XGEVA XGEVA [Member] XGEVA Name of Property [Domain] Name of Property [Domain] Fair Value as of Grant Date Award Grant Date Fair Value Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Collaborative Arrangement Collaborative Arrangement [Member] Deferred government grant income Government Assistance, Liability, Noncurrent Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] STAR Market STAR Market [Member] STAR Market Share-based compensation Share-Based Payment Arrangement, Additional Disclosure [Abstract] Restricted Net Assets Disclosure [Abstract] Restricted Net Assets Disclosure [Abstract] Restricted Net Assets Disclosure [Abstract] 2031 and thereafter Finite Lived Intangible Assets Amortization Expense After Year Four Finite Lived Intangible Assets Amortization Expense After Year Four Purchase and Capital commitments Unconditional Purchase Obligations (Excluding Capital Stock Redemptions) [Abstract] Dilutive common share equivalents (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Total operating expenses Costs and Expenses Document Quarterly Report Document Quarterly Report Total Assets, Fair Value Disclosure Other Financial Instrument, Other [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Equity securities without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Amount Number of operating segments Number of Operating Segments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Proceeds from sale of additional royalties Proceeds From Issuance Of Other Long-Term Debt, Additional Proceeds Proceeds From Issuance Of Other Long-Term Debt, Additional Proceeds Schedule of Sale of Future Royalty Liability Schedule of Short-Term and Long-Term Debt Obligations Schedule of Debt [Table Text Block] Related Party [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Schedule of Prepaid Expenses and Other Current Assets Schedule of Prepaid Expenses and Other Current Assets [Table Text Block] Tabular disclosure of prepaid expenses and other current assets. Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Schedule of Intangible Assets Outstanding Schedule of Finite-Lived Intangible Assets [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Threshold for profit sharing Royalty Revenue, Threshold Annual Sales For Profit Sharing Royalty Revenue, Threshold Annual Sales For Profit Sharing Exercise of options, ESPP and release of RSUs Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Income taxes Income Tax Expense (Benefit), Continuing Operations [Abstract] Other financing activities Proceeds from (Payment for) Other Financing Activity Interest expense Interest Expense, Debt Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) [Line Items] Amgen royalty revenue Amgen Royalty Revenue [Member] Amgen Royalty Revenue Short Term Bank Loan Maturing June 2027 Short Term Bank Loan Maturing June 2027 [Member] Short Term Bank Loan Maturing June 2027 Sale of Stock [Axis] Sale of Stock [Axis] Other Other Intangible Assets [Member] Land Land [Member] Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] Schedule of Amounts and Classification of Reimbursement Expense Schedule Of Reimbursement Expense Under Profit-Sharing Agreement [Table Text Block] Schedule Of Reimbursement Expense Under Profit-Sharing Agreement Equity Awards Adjustments Equity Awards Adjustments [Member] B2 Term Loan Facility B2 Term Loan Facility [Member] B2 Term Loan Facility Leasehold improvement Leasehold Improvements [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Prepaid general and administrative expenses Prepaid General and Administrative Expenses, Current Prepaid General and Administrative Expenses, Current Disaggregation of Revenue Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Face amount Debt Instrument, Face Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Weighted-average ADSs outstanding - diluted (in shares) Weighted Average Number Of American Depository Shares Outstanding, Diluted Weighted Average Number Of American Depository Shares Outstanding, Diluted Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Investment in impairment status Equity Method Investment, Investment In Impairment Status Equity Method Investment, Investment In Impairment Status China China - total revenue CHINA Schedule of Investments Schedule of Investments [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Long-term restricted cash Long-term restricted cash Restricted Cash, Noncurrent Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Remaining portion of development funding cap Other commitments Other Commitment A Loan Facility Short Term Debt, Gross Short Term Debt, Gross Revenues Other Revenue Revenues [Abstract] Research and development cost share liability, current portion Research And Development Cost Share Liability, Current Portion Research And Development Cost Share Liability, Current Portion Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Financial Instruments [Domain] Financial Instruments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Total non-current assets Assets, Noncurrent Performance Shares Performance Shares [Member] Restricted Cash and Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Inventories Increase (Decrease) in Inventories Inventories, net Total Inventory, Net Developed products Developed Technology Rights [Member] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Other non-current assets (Note 5): Assets, Noncurrent [Abstract] Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Company Selected Measure Name Company Selected Measure Name Schedule of Finite-Lived Intangible Assets Amortization Expense Finite-Lived Intangible Assets Amortization Expense [Table Text Block] Sale of Future IMDELLTRA® Royalties Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Cash equivalents Fair Value, Net Asset (Liability) [Abstract] Shares, issues, reduction in capital at the beginning of period (in shares) Shares, issues, reduction in capital at the end of the period (in shares) Shares, Issues, Reduction In Capital Shares, Issues, Reduction In Capital Accounts payable Accounts Payable, Current Interest payable Interest Payable Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] KYPROLIS KYPROLIS [Member] KYPROLIS All Executive Categories All Executive Categories [Member] Finished goods Inventory, Finished Goods, Net of Reserves Ordinary shares, $0.0001 par value per share; 1,540,975,898 and 1,540,975,898 shares issued and 1,444,479,378 and 1,441,075,618 shares outstanding as of March 31, 2026 and December 31, 2025, respectively Common Stock, Value, Issued Issuance of shares reserved for share option exercises (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Net Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Net Contra AR Accruals Contra Accounts Receivable Accruals [Member] Contra Accounts Receivable Accruals Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Other non-current assets Other Assets, Noncurrent [Abstract] Weighted-average shares outstanding— diluted (in shares) Weighted-average shares outstanding— diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Minimum Purchase Commitments for Supply Purchased Minimum Purchase Commitments For Supply Purchased [Member] Minimum Purchase Commitments For Supply Purchased [Member] Commitments and contingencies Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Loans Payable Loans Payable [Member] Other current assets Other Prepaid Expense, Current Entity Small Business Entity Small Business Schedule of Net Product Revenues by Geographic Area Revenue from External Customers by Geographic Areas [Table Text Block] Total sale of future royalty liability Other Long-Term Debt Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Restricted Cash and Cash Equivalent Item [Line Items] Restricted Cash and Cash Equivalent Item [Line Items] Debt Long-Term Debt [Text Block] Document Transition Report Document Transition Report Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Royalty Payments Royalty Payments [Member] Royalty Payments Underlying Securities Award Underlying Securities Amount Total Upfront And Milestone Payments Upfront And Milestone Payments Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Long-term debt, term Long-Term Debt, Term Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Income Taxes Income Tax Disclosure [Text Block] Supplemental Balance Sheet Information Supplemental Balance Sheet Disclosures [Text Block] Amgen, Inc Amgen, Inc [Member] Amgen, Inc [Member] Research and Development Arrangement, Contract to Perform for Others Research and Development Arrangement, Contract to Perform for Others [Line Items] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Schedule of Investments [Table] Schedule of Investments [Table] Prepaid supply cost Prepaid Supply Cost Prepaid Supply Cost Commercial activities Accrued Expenses, Commercial Activities Accrued Expenses, Commercial Activities Long Term Bank Loan Maturing November 2029 Long Term Bank Loan Maturing November 2029 [Member] Long Term Bank Loan Maturing November 2029 Document Type Document Type Fair value of investment Equity Method Investments, Fair Value Disclosure Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Earnings Per Share/ADS Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Other receivables Accounts and Other Receivables, Net, Current Product and Service [Axis] Product and Service [Axis] Proceeds from sale or maturity of investments Proceeds from Sale of Other Assets, Investing Activities Total revenues Other Revenue Product revenue – net Total Revenue Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Earnings per American Depositary Share (“ADS”) Earnings Per American Depository Share [Abstract] Earnings Per American Depository Share Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Proceeds from option exercises and employee share purchase plan Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount John V. Oyler [Member] John V. Oyler Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Product Name [Domain] Product Name [Domain] [Domain] for Product Name [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Current liabilities: Liabilities, Current [Abstract] Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Short Term Bank Loan Maturing November 2029 Short Term Bank Loan Maturing November 2029 [Member] Short Term Bank Loan Maturing November 2029 Quoted Price in Active Market for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Title of each class Title of 12(b) Security Individual income tax and other taxes Accrued Payroll Taxes, Current Movement in accumulated other comprehensive loss AOCI Attributable to Parent, Net of Tax [Roll Forward] Short Term Bank Loan Maturing March 2027 Short Term Bank Loan Maturing March 2027 [Member] Short Term Bank Loan Maturing March 2027 Total Equity Securities, FV-NI and without Readily Determinable Fair Value Research and development cost share liability, current portion Financing Commitment, Carrying Value, Current Financing Commitment, Carrying Value, Current Schedule of Collaboration Agreements Collaboration Agreements [Table Text Block] Collaboration Agreements [Table Text Block] Earnings per share Earnings Per Share [Abstract] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Gross profit Gross Profit B1 Revolving Loan Facility B1 Revolving Loan Facility [Member] B1 Revolving Loan Facility Revenue rebates and returns related Beginning balance Ending balance Revenue Recognition Reserve For Sales Returns, Rebates And Other Deductions Revenue Recognition Reserve For Sales Returns, Rebates And Other Deductions Short-term Debt, Type [Axis] Short-Term Debt, Type [Axis] Other revenue Other Revenue Other Revenue [Member] Other Revenue Income taxes (refunded)/paid Income Taxes Paid, Net Accrued general and administrative expenses Accrued General And Administrative Expenses, Current Accrued General And Administrative Expenses, Current 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Two Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Table] Award Timing Disclosures [Line Items] Prepaid VAT Value Added Tax Receivable, Noncurrent Schedule of Inventories, Net Schedule of Inventory, Current [Table Text Block] Term Loan Facility Long-Term Debt, Gross Compensation related Employee-related Liabilities, Current Property, Plant and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Proceeds from issuance of debt Proceeds from Issuance of Other Long-Term Debt Other Operating Income (Expense) Other Operating Income (Expense) [Member] Interest rate Debt Instrument, Interest Rate During Period Net income Net income Net income Net income Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Non-current liabilities: Liabilities, Noncurrent [Abstract] Other Commitments [Domain] Other Commitments [Domain] Other liabilities Increase (Decrease) in Other Operating Liabilities Accrued expenses and other payables Accounts Payable and Accrued Liabilities, Current [Abstract] Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Property, plant and equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net Segment Reporting Information Segment Reporting Information [Line Items] CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Net Income (Loss) Attributable to Parent [Abstract] Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Percentage of principal repaid Debt Instrument, Percentage Of Principal Amount Repaid Debt Instrument, Percentage Of Principal Amount Repaid Proceeds Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Excluding Option Exercised Equity securities without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount, Net Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount, Net Entity Current Reporting Status Entity Current Reporting Status Maximum commitment Long-term Funding Commitment, Maximum Amount Long-term Funding Commitment, Maximum Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Income from operations Operating Income (Loss) Line of Credit Line of Credit [Member] Accumulated deficit Retained Earnings (Accumulated Deficit) Name of Property [Axis] Name of Property [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Asset retirement obligation Asset Retirement Obligations, Noncurrent Other comprehensive income, net of tax of nil: Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Shares Issued Under Employee Share Purchase Plan Schedule of Share-Based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block] Share Options Employee And Nonemployee Stock Option [Member] An arrangement whereby an employee or non-employee is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement. Finite-lived intangible assets: Finite-Lived Intangible Assets, Net [Abstract] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Repayment of sale of future royalties liability Repayment Of Sale Of Future Royalty Liability Repayment Of Sale Of Future Royalty Liability Shares available for future grants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Rebates, Returns and Other Deductions Rebates, Returns and Other Deductions [Member] Rebates, Returns and Other Deductions Other income, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Restricted Net Assets Restricted Assets Disclosure [Text Block] Schedule of Accrued Expenses and Other Payables Accrued Liabilities, Accounts Payable, Other, and Other Liabilities, Current [Table Text Block] Tabular disclosure of accrued liabilities, other accounts payable, and other liabilities, current. Collaborative, Licensing and Other Arrangements Collaborative Arrangement Disclosure [Text Block] Financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Time deposits Time Deposits, at Carrying Value Diluted (in dollars per share) Diluted (in dollars per share) Earnings Per American Depository Share, Diluted Earnings Per American Depository Share, Diluted Equity securities with readily determinable fair values Equity Securities, FV-NI, Current Unrecognized tax benefits Unrecognized Tax Benefits Antidilutive common share equivalents excluded from above (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Purchase commitments Unrecorded Unconditional Purchase Obligation All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Schedule of Payments Due to Collaboration Partners Payments Due To Collaboration Partners [Table Text Block] Payments Due To Collaboration Partners Termination Date Trading Arrangement Termination Date Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Beginning balance Ending balance Accounts Receivable, Allowance For Chargebacks And Credit Loss Accounts Receivable, Allowance For Chargebacks And Credit Loss B Loan Facility B Loan Facility [Member] B Loan Facility External research and development activities related Accrued Liabilities, External Research And Development Carrying value as of the balance sheet date of the obligations incurred through that date related to external research and development activities related Raw materials Inventory, Raw Materials, Net of Reserves Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Weighted-average shares outstanding—basic (in shares) Weighted Average Number of Shares Outstanding, Basic Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Cost of sales - product Cost of Product and Service Sold Schedule of the Computations of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] BLINCYTO BLINCYTO [Member] BLINCYTO Long-term restricted cash Restricted Cash and Cash Equivalent, Noncurrent Less: Amortization of research and development cost share liability Amortization of Financing Commitment Amortization of Financing Commitment Segment Reporting [Abstract] Segment Reporting [Abstract] Year Ending December 31, Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization of debt issuance costs Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Operating expenses Costs and Expenses [Abstract] Minimum required statutory reserve of annual after-tax profit Restricted Net Assets, Minimum Required Statutory Reserve of Annual After-tax Profit, Percentage Minimum required statutory reserve of annual after-tax profit as a percentage. Ratio of ordinary shares to ADS Common Stock, Ordinary Shares To American Denominated Shares (ADS) Common Stock, Ordinary Shares To American Denominated Shares (ADS) Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Land Located in Hopewell, NJ Hopewell Facility [Member] Hopewell Facility Ordinary shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share A Loan Facility A Loan Facility [Member] A Loan Facility Ordinary shares, shares issued (in shares) Shares issued at the beginning of period (in shares) Shares issued at the end of period (in shares) Common Stock, Shares, Issued Purchase Price, Ordinary (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued In Period Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Exercise Price Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Use of estimates Use of Estimates, Policy [Policy Text Block] Construction in progress Construction in Progress, Gross Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Schedule of Other Non-Current Assets Schedule of Other Assets, Noncurrent [Table Text Block] Insider Trading Arrangements [Line Items] Non-cash interest expense Noncash Interest Expense Noncash Interest Expense Name of each exchange on which registered Security Exchange Name Collaborative arrangement, inventory purchases Related Party Transaction, Purchases from Related Party Long Term Bank Loan Maturing June 2027 Long Term Bank Loan Maturing June 2027 [Member] Long Term Bank Loan Maturing June 2027 Equity securities with readily determinable fair values Equity Securities [Member] Total non-current liabilities Liabilities, Noncurrent Capital Addition Purchase Commitments Capital Addition Purchase Commitments [Member] Total liabilities Balance at December 31, 2025 Balance at March 31, 2026 Liabilities Sale of future royalty liability, current portion Other Long-Term Debt, Current Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Capital expenditures included in accounts payable and accrued expenses Capital Expenditures Incurred but Not yet Paid Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Long Term Bank Loan Maturing January 2029 Long Term Bank Loan Maturing January 2029 [Member] Long Term Bank Loan Maturing January 2029 Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other Other Liabilities, Current Amortization of research and development cost share liability Amortization Of Research And Development Financing Liability Amortization Of Research And Development Financing Liability Net assets for consolidated and unconsolidated subsidiaries Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries Rest of world - total revenue All Other Countries Except China And United States Of America [Member] All Other Countries Except China and The United States of America [Member] John V. Oyler Trading Arrangement, Sold By Pan-Oyler Foundation [Member] John V. Oyler Trading Arrangement, Sold By Pan-Oyler Foundation Statement [Line Items] Statement [Line Items] 2016 Share Option and Incentive Plan Share Option And Incentive Plan 2016 [Member] The 2016 Share Option and Incentive Plan. Less: unamortized debt issuance costs Unamortized Debt Issuance Expense Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Counterparty Name [Axis] Counterparty Name [Axis] Other Collaboration Other [Member] Collaboration Other Ordinary Shares Issued Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation