Proceeds from sale of business Proceeds from Divestiture of Businesses Darin Lippoldt February 2028 Plan [Member] Darin Lippoldt February 2028 Plan Statistical Measurement Statistical Measurement [Domain] Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash Summary Of Reconciliation Of Cash Cash Equivalents And Restricted Cash [Table Text Block] Summary of reconciliation of cash cash equivalents and restricted cash. Business Combination [Abstract] Business Combination [Abstract] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Number of non-clinical stage compounds Number Of Non-clinical Stage Compound Number Of Non-clinical Stage Compound Award Timing Predetermined Award Timing Predetermined [Flag] 2026 (9 months remaining) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Leases [Abstract] Schedule of Other Noncurrent Liabilities Other Noncurrent Liabilities [Table Text Block] 2030 Lessor, Operating Lease, Payment to be Received, Year Four Recently Issued Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Ingrid Delaet February 2028 Plan [Member] Ingrid Delaet February 2028 Plan Disposal Groups, Including Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Available-for-sale debt securities Debt Securities [Member] Other noncurrent liabilities Other Noncurrent Liabilities Other Noncurrent Liabilities Agreement termination, contractual time threshold (in days) Agreement Termination, Contractual Time Threshold Agreement Termination, Contractual Time Threshold Unrealized loss Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Investment income and other, net Investment income and other, net Investment Income And Other Net Investment income and other net. Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic (in USD per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Inventory, gross Inventory, Gross Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Matthew Abernethy [Member] Matthew Abernethy External research and development External Research And Development [Member] External Research And Development Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Total assets held for sale included in other current assets Disposal Group, Including Discontinued Operation, Assets Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk, percentage Concentration Risk, Percentage Neurocrine Group Limited Neurocrine Group Limited [Member] Neurocrine Group Limited Other research and development Other Research And Development [Member] Other Research And Development Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Eric Benevich February 2027 Plan [Member] Eric Benevich February 2027 Plan Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Prepaid income taxes Prepaid Taxes Cash and cash equivalents Cash and Cash Equivalents [Member] Cash paid for income taxes Income Taxes Paid Total stockholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Patents Patents [Member] Current assets: Assets, Current [Abstract] Total liabilities and stockholders’ equity Liabilities and Equity Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Sale of Neurocrine Group Limited Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Maximum Maximum [Member] Ingrid Delaet February 2026 Plan [Member] Ingrid Delaet February 2026 Plan Accounting Policies [Abstract] Accounting Policies [Abstract] Fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Agreement termination, minimal contractual time (in days) Agreement Termination, Minimal Contractual Time Agreement Termination, Minimal Contractual Time Schedule of Operating Lease Liability Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Payroll and benefits Payroll And Benefits [Member] Payroll And Benefits Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Total operating lease liabilities Operating Lease, Liability Share Repurchase Program [Line Items] Share Repurchase Program [Line Items] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Total operating lease payments (sublease income) Lessor, Operating Lease, Payment to be Received Richard Pops [Member] Richard Pops Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Other noncurrent liabilities Total other noncurrent liabilities Other Liabilities, Noncurrent Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Other Balance Sheet Details [Abstract] Other balance sheet details. Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Jude Onyia February 2026 Plan [Member] Jude Onyia February 2026 Plan Noncurrent income taxes payable Accrued Income Taxes, Noncurrent Letter of Credit Letter of Credit [Member] Less current operating lease liabilities included in other current liabilities Operating Lease, Liability, Current Thereafter Lessor, Operating Lease, Payment to be Received, after Year Four Lessor, Operating Lease, Payment to be Received, after Year Four Document Fiscal Period Focus Document Fiscal Period Focus Accrued development costs Accrued Research And Development Expense Current Accrued Research And Development Expense Current Award Timing Method Award Timing Method [Text Block] Award Type Award Type [Axis] Total assets Assets Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Investment, Name Investment, Name [Domain] Trading Symbol Trading Symbol 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Fair Value, Concentration of Risk [Table] Fair Value, Concentration of Risk [Table] Issuances of common stock under stock plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Open Market Repurchases Open Market Repurchases [Member] Open Market Repurchases Entity Address, City or Town Entity Address, City or Town Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount David Boyer [Member] David Boyer Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Research and development Total research and development Research and Development Expense (Excluding Acquired in Process Cost) Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 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] Level 2 Fair Value, Inputs, Level 2 [Member] Julie Cooke February 2028 Plan [Member] Julie Cooke February 2028 Plan Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Gain on sale of business, net of transaction costs Gain on disposal Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Stephen Sherwin [Member] Stephen Sherwin Patent term (in years) Patent Term Term of the patent, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding 2026 (9 months remaining) Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year Matthew Abernethy February 2027 Plan [Member] Matthew Abernethy February 2027 Plan PEO PEO [Member] Current income taxes payable Accrued Income Taxes, Current Change in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] CRENESSITY net product sales CRENESSITY Net Product Sales [Member] CRENESSITY Net Product Sales 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] Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Current branded prescription drug fee Accrued Branded Prescription Drug Fee Accrued Branded Prescription Drug Fee Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service Product and Service [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] 2029 Lessor, Operating Lease, Payment to be Received, Year Three Royalties at tiered percentage (as a percent) Milestone Royalties At Tiered Percentage Milestone Royalties At Tiered Percentage Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Kevin Gorman February 2027 Plan [Member] Kevin Gorman February 2027 Plan Discontinued Operations and Disposal Groups [Abstract] Non-cash lease expense Operating Lease, Right-of-Use Asset, Periodic Reduction Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Income tax assets and liabilities Increase (Decrease) in Income Taxes City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] 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] Commitments and Contingencies Disclosure [Abstract] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Total Gross Product Sales Revenue, Product and Service Benchmark [Member] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Equity investments Equity Securities, FV-NI Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Operating Lease Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Depreciation Depreciation Kevin Gorman February 2028 Plan [Member] Kevin Gorman February 2028 Plan Earnings per share: Earnings Per Share, Basic and Diluted EPS [Abstract] Earnings Per Share, Basic and Diluted EPS Equity Components Equity Components [Axis] Sublease income Sublease Income Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Net product sales Product [Member] Number of reportable segments Number of Reportable Segments Nxera Nxera Pharma UK Limited [Member] Nxera Pharma UK Limited Supplemental disclosures: Supplemental Cash Flow Information [Abstract] Ingrid Delaet [Member] Ingrid Delaet Matthew Abernethy February 2028 Plan [Member] Matthew Abernethy February 2028 Plan Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province 2027 Lessor, Operating Lease, Payment to be Received, Year One Total current liabilities Liabilities, Current Individual: Individual [Axis] Restricted cash related to leases Restricted Cash Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Sublease Income Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Abstract] Other current assets Other Assets, Current Takeda Takeda Pharmaceutical Company Limited [Member] Takeda Pharmaceutical Company Limited Additional paid-in capital Additional Paid in Capital, Common Stock Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Kevin Gorman February 2026 Plan [Member] Kevin Gorman February 2026 Plan 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] Gain on sale of business, net of transaction costs Gain on sale of business, net of transaction costs Gain (Loss) on Disposition of Business Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Sale of stock (in shares) Sale Of Stock, Number Of Shares Sold In Transaction The number of shares sold by the collaboration partner per stock transaction. Right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Jude Onyia [Member] Jude Onyia Operating lease cost Operating Lease, Cost Kyle Gano February 2027 Plan [Member] Kyle Gano February 2027 Plan Legal Matters Legal Matters and Contingencies [Text Block] Equity [Abstract] Less: Segment Reconciliation [Abstract] Segment Reporting and Disaggregation of Relevant Expense Captions Segment Reporting Disclosure [Text Block] 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] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Eric Benevich [Member] Eric Benevich Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] 2023 Voyager Agreement 2023 Voyager Agreement [Member] 2023 Voyager Agreement Amortization of acquired intangible assets Amortization of Intangible Assets Selling, general, and administrative Selling, general, and administrative Selling, General and Administrative Expense Deferred tax assets Deferred Income Tax Assets, Net Other noncurrent assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Share Repurchase Programs Share Repurchase Programs [Member] Share Repurchase Programs 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] Finished goods Inventory, Finished Goods, Gross Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] 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 Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Share price (in USD per share) Share Price Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Subsequent Event Type [Axis] Subsequent Event Type [Axis] Repurchases of common stock (in shares) Number of shares (in shares) Stock Repurchased and Retired During Period, Shares Cash consideration Disposal Group, Including Discontinued Operation, Consideration Assets Assets [Abstract] Credit Facility Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Sigma Merger Sub, Inc Sigma Merger Sub, Inc [Member] Sigma Merger Sub, Inc Fair Value Measurements Fair Value Disclosures [Text Block] Credit Facility Credit Facility [Domain] Stockholders’ 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] Entity Address, Address Line One Entity Address, Address Line One Research and development Research and Development Expense Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Investment, Name Investment, Name [Axis] Kyle Gano February 2026 Plan [Member] Kyle Gano February 2026 Plan Noncurrent operating lease liabilities Noncurrent operating lease liabilities Operating Lease, Liability, Noncurrent Work in process Inventory, Work in Process, Gross Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Collaborative Arrangement Collaborative Arrangement [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Foreign currency translation adjustments, net of tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent Total liabilities related to assets held for sale included in other current liabilities Disposal Group, Including Discontinued Operation, Liabilities Effect of dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Total operating expenses Costs and Expenses Ingrid Delaet February 2027 Plan [Member] Ingrid Delaet February 2027 Plan Document Quarterly Report Document Quarterly Report Fair value of assets on recurring basis Assets, Fair Value Disclosure Deferred income taxes Deferred Income Taxes and Tax Credits Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] David Boyer February 2028 Plan [Member] David Boyer February 2028 Plan Counterparty Counterparty Name [Domain] Number of operating segments Number of Operating Segments 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Operating Leases Leases, Operating [Abstract] Other revenues Other Income [Member] Accretion of discount on available-for-sale debt securities, net Accretion (Amortization) of Discounts and Premiums, Investments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Schedule of Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Restatement Determination Date: Restatement Determination Date [Axis] Issuances of common stock under benefit plans, net of tax Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Accounts Receivable Accounts Receivable [Member] Schedule of Prepaid expenses Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Agreement termination by counterparty, contractual time threshold (in days) Agreement Termination By Counterparty, Contractual Time Threshold Agreement Termination By Counterparty, Contractual Time Threshold Darin Lippoldt February 2027 Plan [Member] Darin Lippoldt February 2027 Plan Name Trading Arrangement, Individual Name Assets held for sale: Disposal Group, Including Discontinued Operation, Assets [Abstract] All Award Types Award Type [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Darin Lippoldt [Member] Darin Lippoldt Compensation Amount Outstanding Recovery Compensation Amount Eric Benevich February 2028 Plan [Member] Eric Benevich February 2028 Plan Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Milestones Milestones [Member] Milestones MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Restricted cash included in other noncurrent assets Restricted Cash, Noncurrent Weighted-average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Collaboration revenues Collaboration Revenue [Member] Collaboration revenue. David Boyer February 2026 Plan [Member] David Boyer February 2026 Plan Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Jude Onyia February 2027 Plan [Member] Jude Onyia February 2027 Plan Revenues: Revenues [Abstract] Schedule of Revenue by Major Customers by Reporting Segments Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Financial Instruments Financial Instruments [Domain] Unrealized (loss) gain on available-for-sale debt securities, net of tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Segments [Domain] Segments [Domain] Number of preclinical candidates Number Of Preclinical Candidates Number Of Preclinical Candidates 2019 Voyager Agreement 2019 Voyager Agreement [Member] 2019 Voyager Agreement Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Liabilities related to assets held for sale: Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Inventory Increase (Decrease) in Inventories Inventory Total inventory Inventory, Net Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Other assets Disposal Group, Including Discontinued Operation, Other Assets Company Selected Measure Name Company Selected Measure Name Purchases of available-for-sale debt securities Payments to Acquire Debt Securities, Available-for-Sale Preferred stock, $0.001 par value; 5.0 shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Kevin Gorman [Member] Kevin Gorman Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income - diluted Net Income (Loss) Available to Common Stockholders, Diluted All Executive Categories All Executive Categories [Member] Common stock, $0.001 par value; 220.0 shares authorized; 100.6 and 100.1 shares issued and outstanding, respectively Common Stock, Value, Issued Reportable Segment Reportable Segment [Member] Reportable Segment Prepaid development costs Prepaid Development Costs Prepaid Development Costs Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Segment Reporting and Disaggregation of Relevant Expense Captions Segment Reporting, Policy [Policy Text Block] Kyle Gano [Member] Kyle Gano Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Matthew Abernethy February 2026 Plan [Member] Matthew Abernethy February 2026 Plan Business Combination [Axis] Business Combination [Axis] Other prepaid expenses Other Prepaid Expense, Current Entity Small Business Entity Small Business Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report Sanofi S.A Sanofi S.A [Member] Sanofi S.A Beneficial ownership (as a percent) Equity Method Investment, Ownership Percentage Underlying Securities Award Underlying Securities Amount Equity Component Equity Component [Domain] Document Period End Date Document Period End Date Kyle Gano February 2028 Plan [Member] Kyle Gano February 2028 Plan PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Supplemental Financial Information Supplemental Balance Sheet Disclosures [Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Document Type Document Type Earnings per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Accounts payable and other accrued liabilities Accounts Payable and Other Accrued Liabilities, Current Product and Service Product and Service [Axis] Issuances of common stock under benefit plans Proceeds from Issuance of Common Stock Total revenues Total revenues Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Total current assets Assets, Current Statistical Measurement 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] INGREZZA net product sales INGREZZA Net Product Sales [Member] INGREZZA Net Product Sales Disposal Group Classification [Axis] Disposal Group Classification [Axis] Share repurchase program, authorized, amount Share Repurchase Program, Authorized, Amount Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Disposal Group Name [Axis] Disposal Group Name [Axis] Taxes paid related to net share settlement of equity awards Payment, Tax Withholding, Share-Based Payment Arrangement Potential milestone payments Potential Milestone Payments The amount of potential milestone payments under a collaborative arrangement. Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Other liabilities Disposal Group, Including Discontinued Operation, Other Liabilities Net income - basic Net Income (Loss) Available to Common Stockholders, Basic Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Current liabilities: Liabilities, Current [Abstract] Number of undisclosed programs Number Of Undisclosed Programs Number Of Undisclosed Programs Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Other assets and liabilities, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Eric Benevich February 2026 Plan [Member] Eric Benevich February 2026 Plan Business combination (in dollars per share) Business Combination, Price Per Share Level 1 Fair Value, Inputs, Level 1 [Member] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Diluted (in USD per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Julie Cooke February 2026 Plan [Member] Julie Cooke February 2026 Plan Earnings per share: Earnings Per Share [Abstract] Total other income (expense), net Nonoperating Income (Expense) Customer C Customer C [Member] Customer C Julie Cooke [Member] Julie Cooke Available-for-sale debt securities Debt Securities, Available-for-Sale, Current Repurchases of common stock Total cost of shares Stock Repurchased and Retired During Period, Value Sales rebates and reserves Provision for Loss on Contracts Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Intangible assets, net Disposal Group, Including Discontinued Operation, Intangible Assets Number of gene therapy programs Number Of Gene Therapy Programs Number Of Gene Therapy Programs Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Table] Award Timing Disclosures [Line Items] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Accrued employee related costs Employee-related Liabilities, Current Total operating lease payments (sublease income) Lessee, Operating Lease, Liability, to be Paid Acquired in-process research and development Acquired in-process research and development Research and Development Asset Acquired in Transaction Other than Business Combination or Joint Venture Formation, Writeoff Stockholders’ Equity Equity [Text Block] Net income Net income Net income Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Expiration Date Trading Arrangement Expiration Date Unrealized gain (loss) on equity investments Changes in fair values of equity investments Unrealized (gain) loss on equity investments Equity Securities, FV-NI, Unrealized Gain (Loss) Property and equipment, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Net operating lease cost Operating Leases, Rent Expense, Net Sublease Income Operating Leases, Rent Expense, Net Sublease Income Repurchases of common stock Payments for Repurchase of Common Stock 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 Entity Current Reporting Status Entity Current Reporting Status Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Operating income Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Schedule Class of Treasury Stock Class of Treasury Stock [Table Text Block] Financial Instrument Financial Instrument [Axis] Customer D Customer D [Member] Customer D 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] Agreement termination by counterparty, minimal contractual time (in days) Agreement Termination By Counterparty, Minimal Contractual Time Agreement Termination By Counterparty, Minimal Contractual Time Less inventory reserves Inventory Valuation Reserves Current Fiscal Year End Date Current Fiscal Year End Date Subsequent Event Type [Domain] Subsequent Event Type [Domain] Finite-Lived Intangible Assets, Major Class Name Finite-Lived Intangible Assets, Major Class Name [Domain] Voyager Voyager Therapeutics [Member] Voyager therapeutics. 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] Statement [Table] Statement [Table] Adjustments to reconcile net income to net cash from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Collaboration and License Agreements Collaborative Arrangement Disclosure [Text Block] Cash flows from 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] Julie Cooke February 2027 Plan [Member] Julie Cooke February 2027 Plan Related party transaction, amounts of transaction Business Combination, Price of Acquisition, Expected Thereafter Lessee, Operating Lease, Liability, Payments, Due After Year Four Lessee, Operating Lease, Liability, Payments, Due After Year Four Organization and Significant Accounting Policies Business Description and Accounting Policies [Text Block] Shares excluded from diluted per share amounts because their effect would have been anti-dilutive (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Accounts payable and accrued liabilities Total accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Amendment Flag Amendment Flag Accrued interest receivables Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Leases Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date Cash flows from 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] Accounts payable and accrued liabilities Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities Measure: Measure [Axis] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Available-for-sale debt securities Debt Securities, Available-for-Sale, Noncurrent Schedule of Financial Assets Measured at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Basic (in shares) Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Authorized amount remaining under program Share Repurchase Program, Remaining Authorized, Amount Cost of revenues Cost of revenues Cost of Product and Service Sold Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Share Repurchase Program [Table] Share Repurchase Program [Table] Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Other income (expense): Nonoperating Income (Expense) [Abstract] Entity Tax Identification Number Entity Tax Identification Number Board of directors maximum duration term (in years) Board Of Directors Maximum Duration Term Board Of Directors Maximum Duration Term Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] Customer B Customer B [Member] Customer B Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Xenon Xenon Pharmaceuticals Inc. [Member] Xenon Pharmaceuticals Inc. Subsequent Event Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Equity investments Equity Securities [Member] Raw materials Inventory, Raw Materials, Gross 2028 Lessor, Operating Lease, Payment to be Received, Year Two Total liabilities Liabilities Accrued capital expenditures Capital Expenditures Incurred but Not yet Paid Customer A Customer A [Member] Customer A Jude Onyia February 2028 Plan [Member] Jude Onyia February 2028 Plan Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Sales and maturities of available-for-sale debt securities Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Operating expenses: Operating Expenses [Abstract] Prepaid expenses Total prepaid expenses Prepaid Expense, Current Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other current liabilities Other Liabilities, Current David Boyer February 2027 Plan [Member] David Boyer February 2027 Plan Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Counterparty Counterparty Name [Axis] Subsequent Event [Line Items] Subsequent Event [Line Items] Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Change 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 Darin Lippoldt February 2026 Plan [Member] Darin Lippoldt February 2026 Plan Research and Development Arrangement, Contract to Perform for Others, Type [Domain] Research and Development Arrangement, Contract to Perform for Others, Type [Domain]