Cover [Abstract] Document Information [Table] Document Information [Line Items] Document and Entity Information Document Type Document Period End Date Securities Act File Number Entity Registrant Name Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Country Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Statement of Financial Position [Abstract] Statement [Table] Statement [Line Items] Statement Assets [Abstract] Assets Assets, Current [Abstract] Current assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents Short-Term Investments Short-term investments Bank deposits maturing over three months (note) Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable Accounts receivable, net Accounts receivable Amount, after allowance, receivables classified as other receivables and prepayments and deposits due within one year or the normal operating cycle, if longer. Other Receivables, Prepayments and Deposits, Current Other receivables, prepayments and deposits Total Other Receivables, Net, Current Amounts due from related parties Other Receivable, after Allowance for Credit Loss, Current, Related Party [Extensible Enumeration] Inventory, Net Inventories Total Assets, Current Current assets Total current assets Property, Plant and Equipment, Net Property, plant and equipment Equity Method Investments Investment in an equity investee Carrying amount of investments as at June 30 Equity Securities without Readily Determinable Fair Value, Amount Investment in equity security Other Receivable, after Allowance for Credit Loss, Noncurrent Amounts due from related parties Other Receivable, after Allowance for Credit Loss, Noncurrent, Related Party [Extensible Enumeration] Other Assets, Noncurrent Other non-current assets Assets Total assets Total assets Liabilities and Equity [Abstract] Liabilities and shareholders' equity Liabilities, Current [Abstract] Current liabilities Accounts Payable, Current Accounts payable Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer) for other payables, accruals and advance receipts. Other Payables, Accruals and Advance Receipts, Current Other payables, accruals and advance receipts Total other payables, accruals and advance receipts Short-Term Debt Short-term bank borrowings Contract with Customer, Liability, Current Deferred revenue Deferred revenue-current Other Liabilities, Current Other current liabilities Liabilities, Current Current liabilities Total current liabilities Long-Term Debt, Excluding Current Maturities Non-current Long-term bank borrowings Contract with Customer, Liability, Noncurrent Deferred revenue, non-current portion Deferred revenue-noncurrent Other Liabilities, Noncurrent Other non-current liabilities Other non-current liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Company's shareholders' equity Common Stock, Value, Issued Ordinary shares; $0.10 par value; 1,500,000,000 shares authorized; 872,111,470 and 871,601,095 shares issued at June 30, 2025 and December 31, 2024 Additional Paid in Capital, Common Stock Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated losses Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Equity, Attributable to Parent Total Company's shareholders' equity Equity, Attributable to Noncontrolling Interest Non-controlling interests Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Net assets Total shareholders' equity Liabilities and Equity Total liabilities and shareholders' equity Common Stock, Par or Stated Value Per Share Ordinary shares, par value (in US$ per share) Common Stock, Shares Authorized Ordinary shares, authorized (in shares) Common Stock, Shares, Issued Ordinary shares, issued (in shares) Income Statement [Abstract] Product and Service [Axis] Product and Service [Domain] Product [Member] Goods Represents information pertaining to commercialization. Commercialization Services [Member] Services-Commercialization of Marketed Products Services -commercialization Represents information pertaining to research and development services. Research And Development Services [Member] Services-Research and development Services -research and development Represents information pertaining to collaboration research and development. Collaboration Research And Development [Member] License & Collaborations-Services Services -collaboration research and development Represents information pertaining to other collaboration revenue from royalties. Other Collaboration Royalties Revenue [Member] Other collaboration revenue -royalties License & Collaborations-Royalties Represents information pertaining to other collaboration revenue from licensing. Other Collaboration Licensing Revenue [Member] Other collaboration revenue -licensing License & Collaborations-Licensing Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Nonrelated Party [Member] Third parties Related Party [Member] Related parties Related parties Revenues [Abstract] Revenue Revenue from Contract with Customer, Excluding Assessed Tax Sales Revenue from external customers Revenue Costs and Expenses [Abstract] Operating expenses Cost of Goods and Services Sold Cost of goods and services Cost of revenue Purchases Research and Development Expense Research and development expenses Research and development expenses Research and development expenses Selling Expense Selling expenses General and Administrative Expense Administrative expenses Costs and Expenses Total operating expenses Operating Income (Loss) (Loss)/income from operations Amount of gain on sale or disposal of an equity method investment, classified as nonoperating. Equity Method Investment, Realized Gain on Disposal Gain from divestment of an equity investee Gain on divestment of an equity investee Gain on divestment of an equity investee Other Nonoperating Income (Expense) Other income, net Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income/(loss) before income taxes and equity in earnings of an equity investee Income/(loss) before income taxes and equity in earnings of an equity investee Profit before taxation Income Tax Expense (Benefit) Income tax expense Income tax expense Income tax expense Income (Loss) from Equity Method Investments Equity in earnings of an equity investee, net of tax Equity in earnings of an equity investee, net of tax Equity in earnings of an equity investee, net of tax Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Net income Net Income (Loss) Attributable to Noncontrolling Interest Less: Net income attributable to non-controlling interests Net Income (Loss) Attributable to Parent Net income Net income attributable to the Company Net income attributable to the Company Earnings Per Share, Basic Earnings per share attributable to the Company - basic (US$ per share) Basic earnings per share attributable to the Company (US$ per share) Earnings Per Share, Diluted Diluted earnings per share attributable to the Company (US$ per share) Earnings per share attributable to the Company - diluted (US$ per share) Weighted Average Number of Shares Outstanding, Basic Number of shares used in per share calculation - basic (in shares) Weighted average number of outstanding ordinary shares in issue Weighted Average Number of Shares Outstanding, Diluted Number of shares used in per share calculation - diluted (in shares) Weighted average number of outstanding ordinary shares in issue and dilutive ordinary share equivalents outstanding Statement of Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income/(loss) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation gain/(loss) Foreign currency translation adjustments Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Less: Comprehensive income attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income attributable to the Company Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Ordinary Shares Additional Paid-in Capital [Member] Additional Paid-in Capital Retained Earnings [Member] Accumulated Losses AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Loss Parent [Member] Total Company's Shareholders' Equity Noncontrolling Interest [Member] Non-controlling Interests Common Stock, Shares, Outstanding Balance (in shares) Balance (in shares) Stock Issued During Period, Value, Stock Options Exercised Issuances in relation to share option exercises Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Exercised (in shares) APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Share-based compensation - Share options APIC, Share-Based Payment Arrangement, Other, Increase for Cost Recognition Share-based compensation - Long-term incentive plan ("LTIP") APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Share-based compensation Represents the amount long-term incentive plan treasury shares held by Trustee of the Company. Treasury Shares Long Term Incentive Plan Held By Trustee LTIP-treasury shares acquired and held by Trustee Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Dividend declared to a non-controlling shareholder of a subsidiary Dividends declared Represents (increase)/decrease in stockholders' equity from divestment of an equity investee. Divestment Of Equity Investee Divestment of an equity investee (Note 16) Represents the transfer amount between reserves. Transfers Between Reserves Transfer between reserves Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities Payments to Acquire Property, Plant, and Equipment Purchases of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from disposal of property, plant and equipment Net cash flow from refund/(payment) of leasehold land deposit. Refund/(Payment) of Leasehold Land Deposit Refund of leasehold land deposit Payments to Acquire Short-Term Investments Deposits in short-term investments Proceeds from Sale of Short-Term Investments Proceeds from short-term investments Proceeds from Sale of Equity Method Investments Proceeds from divestment of an equity investee Proceeds Payments to Acquire Intangible Assets Acquisition of an intangible asset Net Cash Provided by (Used in) Investing Activities Net cash generated from/(used in) investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financing activities Proceeds from Issuance of Common Stock Proceeds from issuances of ordinary shares Payments for Repurchase of Common Stock Purchases of treasury shares Payments of Ordinary Dividends, Noncontrolling Interest Dividend paid to a non-controlling shareholder of a subsidiary Proceeds from Bank Debt Proceeds from bank borrowings Repayments of Bank Debt Repayment of bank borrowings Net Cash Provided by (Used in) Financing Activities Net cash generated from/(used in) financing activities Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net decrease in cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Effect of exchange rate changes on cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net decrease in cash and cash equivalents, including effect of exchange rate changes Cash and Cash Equivalents and Short-term Investments Cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Organization and Nature of Business Nature of Operations [Text Block] Organization and Nature of Business Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Cash, Cash Equivalents, and Short-Term Investments [Text Block] Cash and Cash Equivalents and Short-term Investments Accounts Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accounts Receivable NA. Other Receivables, Prepayments and Deposits The entire disclosure for other receivable, prepayments and deposits. Other Receivable Prepayments And Deposits Disclosure Text Block Other Receivables, Prepayments and Deposits Inventories Inventory Disclosure [Text Block] Inventories Investment in an Equity Investee Equity Method Investments and Joint Ventures Disclosure [Text Block] Investment in an Equity Investee Accounts Payable The entire disclosure for accounts payable at the end of the reporting period. Accounts Payable Disclosure [Text Block] Accounts Payable Other Payables, Accruals and Advance Receipts The entire disclosure for other payables, accruals and advance receipts. Other Payables Accruals And Advance Receipts Disclosure [Text Block] Other Payables, Accruals and Advance Receipts Bank Borrowings Debt Instrument [Line Items] Bank Borrowings Debt Disclosure [Text Block] Bank Borrowings Other Non-current Liabilities The entire disclosure for other non-current liabilities. Other Non Current Liabilities [Text Block] Other Non-current Liabilities Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Share-based Compensation Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-based Compensation Share-Based Payment Arrangement [Text Block] Share-based Compensation Revenue Revenue from Contract with Customer [Text Block] Revenue Research and Development Expenses Research, Development, and Computer Software Disclosure [Text Block] Research and Development Expenses Gain on Divestment of an Equity Investee The entire disclosure of gain on divestment of an equity investee. Gain Or Loss On Sale Of Stock In Subsidiary Or Equity Method Investee Disclosure [Text Block] Gain on Divestment of an Equity Investee Significant Transactions with Related Parties and Non-controlling Shareholders of Subsidiaries Related Party Transactions Disclosure [Text Block] Significant Transactions with Related Parties and Non-controlling Shareholders of Subsidiaries Income Taxes Income Tax Disclosure [Text Block] Income Taxes Earnings Per Share Earnings Per Share [Text Block] Earnings Per Share Segment Reporting Segment Reporting Disclosure [Text Block] Segment Reporting No definition available. Note to Condensed Consolidated Statements of Cash Flows The entire disclosure pertaining to the reconciliation of net income/(loss) for the year to net cash (used in)/generated from operating activities. Reconciliation of Net Income/(Loss) to net Cash (Used in)/Generated from Operating Activities [Text Block] Note to Condensed Consolidated Statements of Cash Flows No definition available. Litigation The entire disclosure pertaining to the litigation. Litigation [Text Block] Litigation Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Basis of Accounting, Policy [Policy Text Block] Basis of Presentation New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Cash, Cash Equivalents and Investments [Table Text Block] Schedule of cash and cash equivalents and short term investments Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of accounts receivable The tabular disclosure for aging analysis for accounts receivables based on the relevant invoice dates. Schedule of Aging Analysis for Accounts Receivables [Table Text Block] Schedule of aging analysis based on the relevant invoice dates Tabular disclosure of the activity by class in allowance for doubtful accounts - including but not limited to beginning and ending balances, aggregate additions charged and recoveries credited to operations, and aggregate write-downs charged against allowance. Schedule of Allowance for Doubtful Accounts [Table Text Block] Schedule of movements on the allowance for credit losses