Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Debt Securities Debt Securities, Available-for-Sale [Table Text Block] 2031 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional paid-in capital Additional Paid-in Capital [Member] Tabular List, Table Tabular List [Table Text Block] Principal payments on capital-related vendor financing Principal payments on capital-related vendor financing Repayments Of Long Term Debt On Capital Financing From Vendors Repayments Of Long Term Debt On Capital Financing From Vendors Accounting Changes and Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Lease liabilities: Lease Liability [Abstract] Lease Liability [Abstract] All other category Reportable Segment, Aggregation before Other Operating Segment [Member] Distribution systems Distribution Systems [Member] Distribution Systems [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Revenue Recognition and Related Costs Revenue from Contract with Customer [Text Block] Interest rate caps Interest Rate Cap [Member] Adjustment to Compensation, Amount Adjustment to Compensation Amount Deferred financing costs, discounts and premiums, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Nexfibre Networks Limited (nexfibre JV) Nexfibre Networks Limited (nexfibre JV) [Member] Nexfibre Networks Limited (nexfibre JV) Lionsgate Studios Corp. (Lionsgate) Lionsgate Studios Corp. [Member] Lionsgate Studios Corp. Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Instruments accounted for under measurement alternative Instruments Accounted For Under Measurement Alternative [Member] Instruments Accounted For Under Measurement Alternative Employee Stock Option Share-Based Payment Arrangement, Option [Member] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Total Liberty Global shareholders Equity, Attributable to Parent Other comprehensive earnings (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Principal Transaction Revenue [Line Items] Principal Transaction Revenue [Line Items] Schedule of Property and Equipment Property, Plant and Equipment [Table Text Block] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Maximum Maximum [Member] Options exercisable, weighted average exercise price or base price (in dollars per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Net earnings attributable to noncontrolling interests Net earnings attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net carrying amount Finite-Lived Intangible Assets, Net Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] 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] Programming costs Programming And Copyright Costs Programming And Copyright Costs Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Earnings (loss) before income taxes Earnings (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Third-party and affiliate Operating Segments [Member] Intangible assets subject to amortization, net (note 8) Other Intangible Assets, Net Comprehensive loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Schedule of Stock-Based Compensation Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Current portion Operating Lease, Liability, Current Interest expense Finance Lease, Interest Expense Document Fiscal Period Focus Document Fiscal Period Focus Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Award Type [Axis] Award Type [Axis] Liberty Global Parent Company [Member] Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Warrants, fair value Warrants, Fair Value Disclosure Warrants, Fair Value Disclosure Valuation allowances, percent Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Total vendor financing maturities Vendor Financing Obligations [Member] Vendor Financing Obligations Entity Address, City or Town Entity Address, City or Town Weighted average discount rate, for finance leases Finance Lease, Weighted Average Discount Rate, Percent Effect of exchange rate changes on cash and cash equivalents and restricted cash 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 RSUs Restricted Stock Units (RSUs) [Member] Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Remainder of 2026 Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Plume Design, Inc. (Plume) Plume Design, Inc. (Plume) [Member] Plume Design, Inc. (Plume) Consideration transferred Business Combination, Consideration Transferred Entity Emerging Growth Company Entity Emerging Growth Company 2029 Long-Term Debt, Maturity, Year Three Residential Service Residential Service [Member] Residential Service [Member] Weighted average remaining lease term for finance leases (in years) Finance Lease, Weighted Average Remaining Lease Term 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] Revenue Total revenue Revenue from Contract with Customer, Including Assessed Tax Restricted cash included in other current assets and other assets, net Restricted Cash and Cash Equivalent Less: present value discount Finance Lease, Liability, Undiscounted Excess Amount Accrued capital expenditures Accrued Capital Expenditures, Current Accrued Capital Expenditures, Current Class C Common Class C [Member] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Egg Power Capex Facility Egg Power Capex Facility [Member] Egg Power Capex Facility Non-subscription revenue Non-subscription Revenue [Member] Non-subscription Revenue Accrued income taxes Accrued Income Taxes, Current 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] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Aggregate cash proceeds Proceeds from Issuance or Sale of Equity Share-based compensation arrangement by share-based payment award, cap, percent Share-based Compensation Arrangement by Share-based Payment Award, Cap, Percent Share-based Compensation Arrangement by Share-based Payment Award, Cap, Percent Award recipients earning percent Share-based Compensation Arrangement by Share-based Payment Award, Award Recipients Earning, Percent Share-based Compensation Arrangement by Share-based Payment Award, Award Recipients Earning, Percent Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income tax benefit (expense) (note 11) Income tax (benefit) expense Income Tax Expense (Benefit) Broadband internet Broadband Internet [Member] Broadband Internet Class B Common Class B [Member] Balance of Level 3 investments at January 1, 2026 Balance of net assets at March 31, 2024 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Finance lease expense: 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Event Subsequent Event [Member] Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] 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] VodafoneZiggo JV Receivable II VodafoneZiggo JV Receivable II [Member] VodafoneZiggo JV Receivable II 2030 Finance Lease, Liability, to be Paid, Year Four Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Trade Accounts Receivable Trade Accounts Receivable [Member] Telenet Senior Secured Notes Telenet Senior Secured 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and other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Effective income tax rate reconciliation, foreign currency translation, percent Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Percent Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Percent 2026 (remainder of year) Long-Term Debt, Maturity, Remainder of Fiscal Year Assets: Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract] Maximum borrowing capacity Borrowings repaid Line of Credit Facility, Maximum Borrowing Capacity Investments Investment Holdings [Text Block] Realized and unrealized gains due to changes in fair values of certain investments, net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Statement [Line Items] Statement [Line Items] Purchased and extinguished Extinguishment of Debt, Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Interkabel Acquisition Interkabel Acquisition [Member] Interkabel Acquisition [Member] Common shares Common Stock [Member] Finance leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Net increase (decrease) in cash and cash equivalents and restricted cash Net increase (decrease) Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Incremental shares (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Statistical Measurement [Domain] Statistical Measurement [Domain] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Total cash outflows from operating and finance leases Operating And Finance Lease, Payments Operating And Finance Lease, Payments 2026 (remainder of year) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Related Party Transaction [Axis] Related Party Transaction [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Interest Rate Swap Interest Rate Swap [Member] Share of results of affiliates, net (note 5) Share of results of affiliates, net Equity method investment Share of results of affiliates, net Income (Loss) from Equity Method Investments Leases [Abstract] Leases [Abstract] VM Ireland VM Ireland [Member] VM Ireland Repayments and repurchases of debt and finance lease obligations: Repayments And Repurchases Of Debt And Finance Lease Obligations [Abstract] Repayments And Repurchases Of Debt And Finance Lease Obligations Realized and unrealized gains due to changes in fair values of certain investments, net (notes 5 and 7) Realized and unrealized gains due to changes in fair values of certain investments, net Realized and unrealized gains due to changes in fair values of certain investments, net Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments, Net Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments, Net Schedule of Assets and Liabilities Held for Sale Disposal Groups, Including Discontinued Operations [Table Text Block] Schedule of Unrecorded Purchase Obligation Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block] Purchase commitments Purchase Commitments [Member] Purchase Commitments [Member] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic earnings (loss) attributable to Liberty Global shareholders per share (in dollars per share) Earnings Per Share, Basic nexfibre JV nexfibre JV nexfibre JV [Member] nexfibre JV Other comprehensive earnings (loss) Other comprehensive earnings (loss), net of taxes Other Comprehensive Income (Loss), Net of Tax Schedule of Performance Measures of our Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Interest accrued Increase (Decrease) in Accrued Interest Receivable, Net Remaining performance obligation, greater than one year Revenue, Remaining Performance Obligation, Amount Effective income tax rate reconciliation, derecognition of litigation-related receivable, amount Effective Income Tax Rate Reconciliation, Derecognition Of Litigation-Related Receivable, Amount Effective Income Tax Rate Reconciliation, Derecognition Of Litigation-Related Receivable, Amount 2029 Finance Lease, Liability, to be Paid, Year Three Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Share-based compensation expense Share-based compensation expense Share-Based Payment Arrangement, Expense Tax Period [Domain] Tax Period [Domain] Secured debt Secured Debt Current assets: Assets, Current [Abstract] Total liabilities and equity Liabilities and Equity Other revenue Other Category [Member] Other Category [Member] Beginning of period End of period Total cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Total consolidated property and equipment additions Segment, Expenditure, Addition to Long-Lived Assets Televisa Univision, Inc. (Televisa Univision) Televisa Univision Televisa Univision Holdings Inc [Member] Televisa Univision Holdings Inc Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Treasury shares, at cost Treasury Stock, Common [Member] Pay vs Performance Disclosure [Line Items] Operating leases Present value of lease payments Operating Lease, Liability Depreciation and amortization Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Finance Lease, Right-of-Use Asset, Amortization Mobile Services Mobile Services [Member] Mobile Services [Member] Other long-term liabilities (notes 3 and 6) Other Liabilities, Noncurrent Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Changes in current liabilities related to capital expenditures Increase (Decrease) In Current Liabilities Related To Capital Expenditures Increase (Decrease) In Current Liabilities Related To Capital Expenditures Excess of carrying amount over proportional share in investees net assets Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Current portion Long-Term Debt, Current Maturities 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 Comprehensive earnings (loss) attributable to Liberty Global Shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Telenet Overdraft Facility Telenet Overdraft Facility [Member] Telenet Overdraft Facility [Member] Liberty Global Liberty Global [Member] Liberty Global Dispositions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances U.K. and Netherlands U.K. And Netherlands [Member] U.K. And Netherlands U.K., Belgium and Netherlands U.K., Belgium and Netherlands [Member] U.K., Belgium and Netherlands Operating-related vendor financing additions Long Term Debt, Operating Related Additions Long Term Debt, Operating Related Additions Income Tax Contingency [Table] Income Tax Contingency [Table] Total carrying amount of debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Assets Income Tax Contingency Income Tax Contingency [Member] Income Tax Contingency Reduction of annual lease fees Reduction Of Annual Lease Fees Reduction Of Annual Lease Fees Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Debt Covenant [Domain] Debt Covenant [Domain] Debt Covenant [Domain] Consolidated reportable segments Reportable Segment [Member] Reportable Segment Details of end of period cash and cash equivalents and restricted cash: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation [Abstract] 2027 Finance Lease, Liability, to be Paid, Year One Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Addition to ROU assets associated with operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Equity Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Operating leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Related party Related Party [Member] Plan Name [Axis] Plan Name [Axis] PEO PEO [Member] Cash received from the sale of investments Proceeds from Sale, Maturity and Collection of Investments United States UNITED STATES Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Other commitments Other Commitments [Member] Other Commitments [Member] Valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Accumulated earnings Retained Earnings [Member] Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Condensed Consolidated Statement of Operations Income Statement [Abstract] Total Derivative assets Total derivative instruments Derivative Asset Available to borrow Debt Instrument, Unused Borrowing Capacity Amount, Under Covenants Debt Instrument, Unused Borrowing Capacity Amount, Under Covenants Telenet Revolving Facility Telenet Revolving Facility [Member] Telenet Revolving Facility [Member] Total subscription revenue Total Subscription Revenue [Member] Total Subscription Revenue Long-term Derivative Liability, Noncurrent Total — fair value Investments, Fair Value Disclosure Video Video [Member] Video Product and Service [Domain] Product and Service [Domain] Total Liberty Global shareholders Parent [Member] Net earnings (loss) Net earnings (loss) Net (loss) earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Notional amount Derivative, Notional Amount Disposed interest percentage Disposal Group, Including Discontinued Operation, Disposed Interest Disposal Group, Including Discontinued Operation, Disposed Interest Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Investments and receivables at fair value Investments And Related Notes Receivable, Fair Value Disclosure Investments And Related Notes Receivable, Fair Value Disclosure Total B2B revenue Business to Business [Member] Business to Business [Member] Pension-related adjustments and other Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Total finance lease expense Finance Lease, Cost Finance Lease, Cost Basis Swaps Basis Swap [Member] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Long-lived Assets Long Lived Assets Disclosure [Text Block] The entire disclosure for long-lived assets. Disposal group, disposed of by sale, not discontinued operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Subscription revenue Business to Business Subscription [Member] Business to Business Subscription [Member] SG&A expense Selling, General and Administrative Expenses [Member] Total lease expense Lease, Cost Goodwill (note 8) Goodwill beginning balance Goodwill ending balance Goodwill Equity-related derivative instruments Equity Contract [Member] Schedule of Lease Expense and Cash Outflows from Operating and Finance Leases Lease, Cost [Table Text Block] Held by former Liberty Global employees Former Employees [Member] Former Employees [Member] Foreign exchange losses Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Amount Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Amount Capital-related vendor financing additions, before VAT Proceeds From Capital Related Vendor Financing Additions, Before Value Added Tax Proceeds From Capital Related Vendor Financing Additions, Before Value Added Tax Other Performance Measure, Amount Other Performance Measure, Amount Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Current portion of debt and finance lease obligations (notes 9 and 10) Debt, Current Related Party [Domain] Related and Nonrelated Parties [Domain] VMO2 JV VMEO2 JV [Member] VMEO2 JV Assets acquired under capital-related vendor financing arrangements Assets Acquired Under Capital-Related Vendor Financing Arrangements Assets Acquired Under Capital-Related Vendor Financing Arrangements Total Proceeds (Repayments) From Derivatives, Continuing Operations Proceeds (Repayments) From Derivatives, Continuing Operations Derivative Instrument [Axis] Derivative Instrument [Axis] Vodafone Vodafone [Member] Vodafone Leases Lessee, Finance Leases [Text Block] Other current assets (notes 3, 4, 5 and 6) Other current assets Other Assets, Current Investments [Abstract] Investments [Abstract] Entity [Domain] Entity [Domain] Net cash provided (used) by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Revenue, remaining performance obligation, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 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] Long-term Derivative Asset, Noncurrent Net cash proceeds Gain (Loss) on Disposition of Business Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Operating leases Operating Lease, Right-of-Use Asset Effective tax rate Effective Income Tax Rate Reconciliation, Percent Operating lease expense Operating Lease, Cost Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Plan Name [Domain] Plan Name [Domain] Segment Reporting Segment Reporting Disclosure [Text Block] Schedule of Goodwill [Table] Goodwill [Table] 2029 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three 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] Upon completion of the relevant compliance reporting requirements Debt Covenant, Scenario 1 [Member] Debt Covenant, Scenario 1 Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Weighted Average Weighted Average [Member] Leases Lessee, Leases [Policy Text Block] Selling, general and administrative (SG&A) (notes 10 and 12) Selling, General and Administrative Expense Schedule of Lease Balances Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Capital expenditures, net Payments to Acquire Productive Assets Total capital expenditures, net Payments for Capital Improvements Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Vendor Financing Obligation [Roll Forward] Vendor Financing Obligation [Roll Forward] Vendor Financing Obligation Revolving Credit Facility Revolving Credit Facility [Member] Effective income tax rate reconciliation, foreign income tax rate differential, amount Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Finance lease obligations Finance leases Present value of lease payments Finance Lease, Liability Arrangement Duration Trading Arrangement Duration Segments [Axis] Segments [Axis] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other Other Share-Based Incentive Awards [Member] Other Share-Based Incentive Awards [Member] Other investing activities, net Payment for (Proceeds from) Other Investing Activity Thereafter Long-Term Debt, Maturity, after Year Five Share-based Compensation Share-Based Payment Arrangement [Text Block] Fixed-line telephony Fixed-line Telephony [Member] Fixed-line Telephony ASSETS Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Telenet Revolving Facility I Telenet Revolving Facility I [Member] Telenet Revolving Facility I Other Other Contract [Member] Acquisitions and Dispositions [Abstract] Acquisitions and Dispositions [Abstract] Acquisitions and Dispositions [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Number of subsidiaries with the most outstanding debt Number Of Subsidiaries With The Most Outstanding Debt Number Of Subsidiaries With The Most Outstanding Debt Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Measurements Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] Total residential revenue Residential [Member] Residential [Member] Credit Facility [Domain] Credit Facility [Domain] Liberty Global shareholders: Equity, Attributable to Parent [Abstract] Other Other Stock Plan [Member] Other Stock Plan Current Derivative Liability, Current Performance-based incentive awards Performance-Based Incentive Awards [Member] Performance-Based Incentive Awards [Member] Received cash proceeds Proceeds from Short-Term Debt Stated interest percentage Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Schedule of Revenue by Major Category Revenue from External Customers by Products and Services [Table Text Block] Long-term operating lease liabilities (note 10) Long-term portion Operating Lease, Liability, Noncurrent Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name O2 slovakia O2 Slovakia [Member] O2 Slovakia Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Number of associations of municipalities Number Of Associations Of Municipalities Number Of Associations Of Municipalities Total assets Assets, Fair Value Disclosure Available to loan or distribute Financing Receivable, Available To Distribute Financing Receivable, Available To Distribute Percentage of legal and other third party, fees Percentage Of Legal And Other Third Party, Fees Percentage Of Legal And Other Third Party, Fees Schedule of Debt Schedule of Debt [Table Text Block] Elimination of intercompany Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Related Party [Axis] Related and Nonrelated Parties [Axis] Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] AtlasEdge JV AtlasEdge JV [Member] AtlasEdge JV Schedule of Intangible Assets Subject to Amortization, Net Schedule of Finite-Lived Intangible Assets [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Other financing activities, net Proceeds from (Payment for) Other Financing Activity VMO2 JV And VodafoneZiggo JV VMO2 JV And VodafoneZiggo JV [Member] VMO2 JV And VodafoneZiggo JV Name Trading Arrangement, Individual Name Gains included in net earnings Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] Other Other Subsidiaries [Member] Relating to Other Subsidiaries not otherwise identified. Principal amount Debt Instrument, Face Amount Telenet Revolving Credit Facility B Telenet Revolving Credit Facility B [Member] Telenet Revolving Credit Facility B Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Name Awards Close in Time to MNPI Disclosures, Individual Name Principal payments on operating-related vendor financing Principal payments on operating-related vendor financing Repayments Of Long Term Debt On Operating Financing From Vendors Repayments Of Long Term Debt On Operating Financing From Vendors Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Debt Covenant [Axis] Debt Covenant [Axis] Debt Covenant Held by Liberty Global employees: Employees [Member] Employees [Member] Share-based compensation (note 12) APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Schedule of Maturities of Financing Lease Liabilities Finance Lease, Liability, to be Paid, Maturity [Table Text Block] Country Region Country Region Total decrease to borrowing costs Impact Of Derivative Instruments On Borrowing Costs, Percent Increase (Decrease) Impact Of Derivative Instruments On Borrowing Costs, Percent Increase (Decrease) Litigation Case [Axis] Litigation Case [Axis] Operating-related vendor financing additions Proceeds From Operating Related Vendor Financing Additions Proceeds From Operating Related Vendor Financing Additions Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Damages sought Loss Contingency, Damages Sought, Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Amortization of deferred financing costs and non-cash interest Amortization of Debt Issuance Costs and Discounts Total lease liabilities Lease, Liability Lease, Liability Total debt and finance lease obligations Long-Term Debt and Lease Obligation, Including Current Maturities Other Sunrise Holding [Member] Sunrise Holding Vodafone Group Inc. Vodafone Group Inc. [Member] Vodafone Group Inc. All Executive Categories All Executive Categories [Member] Common stock Common Stock, Value, Issued Finance leases Finance Lease, Right-of-Use Asset, after Accumulated Amortization Short-term investments Short-Term Investments Fair Value, Assets and Liabilities (Net) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Title of Individual [Axis] Title and Position [Axis] Commitments and contingencies (notes 6, 9, 10, 11 and 14) Commitments and Contingencies B2B Services B2B Services [Member] B2B Services [Member] Business Combination [Axis] Business Combination [Axis] Comprehensive earnings (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Non-controlling interests Noncontrolling Interest [Member] Telenet Telenet Telenet [Member] Telenet [Member] Ownership percentage Equity Method Investment, Ownership Percentage Accounting Changes and Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Aggregate Variable and Fixed Rate Indebtedness Aggregate Variable And Fixed Rate Indebtedness [Member] Aggregate Variable And Fixed Rate Indebtedness [Member] ROU assets: Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Co-venturer ownership percentage Equity Method Investment, Co-Venturer Ownership Percentage Equity Method Investment, Co-Venturer Ownership Percentage Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Derivative Contract [Domain] Derivative Contract [Domain] SMAs SMAs [Member] SMAs Foreign currency translation adjustments and other, net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] VMO2 JV VMO2 JV (nonconsolidated) VMO2 JV [Member] VMO2 JV Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name 2030 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four 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] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Weighted average interest rate Debt, Weighted Average Interest Rate Cash and cash equivalents and restricted cash: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Number of borrowing groups Number Of Borrowing Groups Number Of Borrowing Groups Foreign currency translation adjustments and other Goodwill, Foreign Currency Translation, Gain (Loss) Fixed fee Fixed Charges [Member] Fixed Charges Notional amount due from counterparty Due From Counterparty [Member] Due From Counterparty [Member] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Schedule of Finite-Lived Intangible Assets by Major Class [Table] Intangible Asset, Finite-Lived [Table] Liability: Derivative Liability [Abstract] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Foreign currency transaction gains (losses), net Foreign currency transaction losses (gains), net Gain (Loss), Foreign Currency Transaction, before Tax Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Number of investments Number Of Investments Number Of Investments Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Earnings Per Share [Abstract] Earnings Per Share [Abstract] 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Non-operating income (expense) Nonoperating Income (Expense) Percentage of ownership interest Subsidiary, Ownership Percentage, Parent Other Other Debt [Member] Other Debt [Member] Percentage of stock price trigger Share-based Compensation Arrangement by Share-based Payment Award, Threshold Percentage of Stock Price Trigger Share-based Compensation Arrangement by Share-based Payment Award, Threshold Percentage of Stock Price Trigger Schedule of Investments by Accounting Method Schedule Of Investments By Accounting Method [Table Text Block] Schedule of Investments by Accounting Method [Table Text Block] Thereafter Finance Lease, Liability, to be Paid, after Year Five Award Timing Disclosures [Line Items] McNair Topco McNair Topco [Member] McNair Topco Debt drawn Debt Principal Balance Of Collateralized Note Debt Principal Balance Of Collateralized Note EdgeConneX, Inc. (EdgeConneX) EdgeConneX EdgeConneX Inc. [Member] EdgeConneX Inc. VM Ireland Credit Facility VM Ireland Credit Facility [Member] VM Ireland Credit Facility Other operating expense Other Operating Income (Expense) [Member] Adjusted EBITDA Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization JV Reportable Segments JV Reportable Segments [Member] JV Reportable Segments Net earnings (loss) attributable to Liberty Global shareholders Net Income (Loss) Attributable to Parent Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Other accrued and current liabilities (notes 4, 6 and 10) Other Accrued Liabilities, Current Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Vendor financing Vendor Financing [Member] Vendor Financing [Member] Repurchases of Liberty Global common shares Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Customer relationships Customer Relationships [Member] AE Group Sàrl (AtlasEdge JV) AE Group Sàrl (AtlasEdge JV) [Member] AE Group Sàrl (AtlasEdge JV) Operating income Operating Income (Loss) Accumulated earnings Retained Earnings (Accumulated Deficit) Cross-currency and interest rate derivative contracts Cross-currency and interest rate derivative contracts Cross Currency Interest Rate Contract [Member] 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] Programming commitments Programming Commitments [Member] Programming Commitments [Member] Principal Transaction Revenue [Table] Principal Transaction Revenue [Table] Term of transitional services Disposal Group, Term Of Transitional Services Disposal Group, Term Of Transitional Services Class of Stock [Axis] Class of Stock [Axis] Subsequent Event Type [Domain] Subsequent Event Type [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] Total liabilities Disposal Group, Including Discontinued Operation, Liabilities, Current Other income, net Other income, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Adjustments to reconcile earnings (loss) to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Deferred revenue Contract with Customer, Liability Long-term portion Finance Lease, Liability, Noncurrent Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Treasury shares, at cost Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Weighted average discount rate, for operating leases Operating Lease, Weighted Average Discount Rate, Percent Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Weighted average common shares outstanding (basic EPS computation) (in shares) Weighted Average Number of Shares Outstanding, Basic UTB that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Foreign currency and other Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Options exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Related Party Transaction [Domain] Related Party Transaction [Domain] Segment Reporting [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Non-operating income (expense): Nonoperating Income (Expense) [Abstract] Operating costs and expenses (exclusive of depreciation and amortization, shown separately below): Costs and Expenses [Abstract] 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 [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Aviatrix Systems, Inc. (Aviatrix) Aviatrix Systems, Inc. [Member] Aviatrix Systems, Inc. Common stock, nominal value (in dollars per share) Common Stock, Par or Stated Value Per Share Related party note receivable Receivable with Imputed Interest, Face Amount Operating cash outflows from finance leases (interest component) Finance Lease, Interest Payment on Liability Financing activities Payments for (Proceeds from) Derivative Instrument, Financing Activities Insider Trading Arrangements [Line Items] Related party note receivable rate Receivable with Imputed Interest, Effective Yield (Interest Rate) Subscription revenue Mobile Subscription [Member] Mobile Subscription [Member] VM Ireland Ireland [Member] Ireland Total liabilities Liabilities Percentage of net present value, cost savings Percentage Of Net Present Value, Cost Savings Percentage Of Net Present Value, Cost Savings 2031 Finance Lease, Liability, to be Paid, Year Five Number of reportable segments not disclosed flag Number Of Reportable Segments Not Disclosed Flag Number Of Reportable Segments Not Disclosed Flag Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Gain (loss) on change in credit risk valuation included in realized and unrealized gains (losses) on derivative instruments, net Gain (Loss) On Credit Risk Derivatives Net Recognized In Earnings Gain (Loss) On Credit Risk Derivatives Net Recognized In Earnings Consolidation Items [Axis] Consolidation Items [Axis] Counterparty Name [Axis] Counterparty Name [Axis] SMAs Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]