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Disclosures [Text Block] Owned and produced films and television programs Film, Monetized in Film Group, Amortization Expense Debt instrument, redemption price, percentage of principal amount redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Common Stock, Shares Authorized, Unlimited [Fixed List] Common Stock, Shares Authorized, Unlimited [Fixed List] PEO Name PEO Name Geographical [Axis] Geographical [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Term Loan A Term Loan A Facility [Member] Term Loan A Facility [Member] Programming Content Entertainment [Text Block] Total share-based compensation expense Share-Based Compensation Expense, Including Accelerated Compensation Cost Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors, certain consultants qualifying for treatment as employees, including the impact of compensation cost recognized as a result of an occurrence of an event that accelerates its recognition. Programming amortization Programming Amortization Expense Programming Amortization Expense Payments Payments for Restructuring Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Base Rate Base Rate [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Debt Instrument [Axis] Debt Instrument [Axis] Share-based compensation Share-Based Payment Arrangement, Noncash Expense Payroll Labor and Related Expense Issuance of Starz common shares to holders of Old Lionsgate Class A Voting and Class B Non-Voting Common Shares and Separation From Old Lionsgate (in shares) Stock Issued During Period, Shares, Issued For Exchanged Stock Stock Issued During Period, Shares, Issued For Exchanged Stock Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Schedule of Debt Schedule of Debt [Table Text Block] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic net loss per common share (in USD per share) Earnings Per Share, Basic Programming related obligations – repayments Repayment of Film Related and Other Obligations The cash outflow from repayments on film related and other obligations. Deferred revenue Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Debt Instrument, Covenant, Period [Axis] Debt Instrument, Covenant, Period [Axis] Debt Instrument, Covenant, Period Non-current portion of debt Long-Term Debt, Excluding Current Maturities Award Type Award Type [Axis] Q4 2028 Q4 2028 [Member] Q4 2028 Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net, including other receivables of $8.3 million and $9.9 million as of September 30, 2026 and December 31, 2025, respectively. Accounts Receivable, after Allowance for Credit Loss, Current Licensed program rights Entertainment, License Agreement for Program Material, Amortization Expense Accumulated deficit Retained Earnings (Accumulated Deficit) Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Net unrealized gain on cash flow hedges, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Starz Common Shares Common Stock [Member] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Released, net of accumulated amortization Film, Monetized in Film Group, Capitalized Cost, Released Severance Employee Severance [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Reclassification Reclassification, Comparability Adjustment [Policy Text Block] International Non-US [Member] Deferred purchase price of receivables sold Transfer of Financial Assets Accounted for as Sales, Cash Proceeds Received From Deferred Purchase Price, Amount Transfer of Financial Assets Accounted for as Sales, Cash Proceeds Received From Deferred Purchase Price, Amount Derivative Contract [Domain] Derivative Contract [Domain] Q4 2027 Q4 2027 [Member] Q4 2027 Required percentage of outstanding shares acquired for rights to be exercisable Class Of Warrant Or Right, Required Percentage Of Outstanding Shares Acquired For Rights To Be Exercisable Class Of Warrant Or Right, Required Percentage Of Outstanding Shares Acquired For Rights To Be Exercisable Term Loan A Loans Payable [Member] Equity Awards Adjustments Equity Awards Adjustments [Member] Starz Networks Starz Networks [Member] Starz Networks Total liabilities and equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Diluted net income per common share - discontinued operations (in USD per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Segments [Axis] Segments [Axis] Due to LG Studios Business Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Domain] Restructuring and other Restructuring charges Restructuring Charges Tabular List, Table Tabular List [Table Text Block] Schedule of Transfer of Financial Assets Accounted for as Sales Transfer of Financial Assets Accounted for as Sales [Table Text Block] Other expense Other Nonoperating Income (Expense) Name Awards Close in Time to MNPI Disclosures, Individual Name 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] Net transfers from Parent Adjustments From Parent Net Investment, Transfers Adjustments From Parent Net Investment, Transfers General and administrative General and Administrative Expense 2026 2026 [Member] 2026 Other accrued liabilities (current) Accrued Liabilities and Other Liabilities [Abstract] Licensed program rights, net of accumulated amortization Entertainment, License Agreement for Program Material, Capitalized Cost Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Trade Accounts Receivable Trade Accounts Receivable [Member] Restructuring and Other Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Programming related payables Programming Related Payables and Obligations, Noncurrent Programming Related Payables and Obligations, Noncurrent Debt Long-Term Debt and Lease Obligation Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument, Covenant, Period Three Debt Instrument, Covenant, Period Three [Member] Debt Instrument, Covenant, Period Three Debt Instrument Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Schedule of Amortization Expense for Film, Monetized on Its Own and Film, Monetized in Film Group and License Agreement for Program Rights Schedule of Amortization Expense for Film, Monetized on Its Own and Film, Monetized in Film Group and License Agreement for Program Rights [Table Text Block] Schedule of Amortization Expense for Film, Monetized on Its Own and Film, Monetized in Film Group and License Agreement for Program Rights Entity Filer Category Entity Filer Category Maturity, option two Debt Instrument, Maturity Date, Option One Debt Instrument, Maturity Date, Option One Name Trading Arrangement, Individual Name Maturity, option one Debt Instrument, Maturity Date, Option Two Debt Instrument, Maturity Date, Option Two Cash and cash equivalents Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Depreciation and amortization Depreciation, Depletion and Amortization Owned and produced films and television programs Film, Monetized in Film Group, Amortization Expense, Net Film, Monetized in Film Group, Amortization Expense, Net Residuals Residuals, Current Residuals, Current Loss recorded related to transfers of receivables Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Stock-based compensation (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Parent Net Investment Parent Investment, Net [Member] Parent Investment, Net Programming amortization Amortization of Programming Content Amortization of Programming Content 2030 Long-Term Debt, Maturity, Year Five Derivative liability Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax benefit (expense) Income tax benefit (expense) Income Tax Expense (Benefit) Programming related obligations Programming Related Obligations, Current The carrying amount of film related obligations, net of debt issuance costs if applicable. For a classified balance sheet, represents the current portion only. Award Timing Method Award Timing Method [Text Block] Net change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Other non-cash transfer Other Transfers To (From) Parent, Net Other Transfers To (From) Parent, Net Parent net investment Net transfers from Parent included on consolidated statements of cash flows Payments to (Proceeds From) Parent, Net Investment, Including Discontinued Operations Payments to (Proceeds From) Parent, Net Investment, Including Discontinued Operations Net loss Net loss Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Other unallocated assets Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Restatement Determination Date: Restatement Determination Date [Axis] Number of common shares called by each right (in shares) Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Exercise of stock options Proceeds from Stock Options Exercised Net loss from continuing operations Net loss from continuing operations Net loss from continuing operations, net of tax Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Schedule of Other Assets Schedule of Other Assets [Table Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] New Lionsgate revolving credit facility – decreases Payments To Acquire Other Receivables, Net Payments To Acquire Other Receivables, Net