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Leases [Abstract] Leases [Abstract] Other comprehensive earnings (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Instruments accounted for under measurement alternative Instruments Accounted For Under Measurement Alternative [Member] Instruments Accounted For Under Measurement Alternative Effective income tax rate reconciliation, foreign income tax rate differential, amount Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Consolidated Entities [Domain] Consolidated Entities [Domain] Common stock, nominal value (in dollars per share) Common Stock, Par or Stated Value Per Share Other than options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Investments and related notes receivable (including $1,054.6 million and $1,631.5 million, respectively, measured at fair value on a recurring basis) (note 5) Long-term investments Long-Term Investments Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Total current liabilities Liabilities, Current Customer relationships Customer Relationships [Member] Current Derivative Liability, Current Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Entity Address, City or Town Entity Address, City or Town Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Condensed Consolidated Balance Sheet Statement of Financial Position [Abstract] Programming costs Programming And Copyright Costs Programming And Copyright Costs Title of Individual [Domain] Title and Position [Domain] Net carrying amount Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Non-operating income (expense): Nonoperating Income (Expense) [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Other comprehensive earnings (loss) Other comprehensive earnings (loss), net of taxes Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Liberty Global Parent Company [Member] United States UNITED STATES Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Investment Income [Table] Investment Income [Table] Schedule of Performance Measures of our Reportable Segments Segment Reporting [Table Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Related Party [Axis] Related and Nonrelated Parties [Axis] Revenue Recognition and Related Costs Revenue from Contract with Customer [Policy Text Block] Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Document Period End Date Document Period End Date Held-for-sale liabilities Disposal Group, Including Discontinued Operation, Liabilities, Current Held for sale Discontinued Operations, Held-for-Sale [Member] Principal amount Debt Instrument, Face Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Maturity term Debt Instrument, Term Warrants, fair value Warrants, Fair Value Disclosure Warrants, Fair Value Disclosure Treasury shares, at cost Treasury Stock, Common, Value Total vendor financing maturities Vendor Financing Obligations [Member] Vendor Financing Obligations Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Basis Swaps Basis Swap [Member] Weighted average remaining lease term for finance leases (in years) Finance Lease, Weighted Average Remaining Lease Term 2028 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two Accumulated other comprehensive earnings, net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Class B Common Class B [Member] Consolidation Items [Domain] Consolidation Items [Domain] Current portion Operating Lease, Liability, Current Plume Design, Inc. (Plume) Plume Plume Design, Inc. (Plume) [Member] Plume Design, Inc. 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Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Interest acquired (in percent) Business Combination, Voting Equity Interest Acquired, Percentage Entity Emerging Growth Company Entity Emerging Growth Company Available to borrow Debt Instrument, Unused Borrowing Capacity Amount, Under Covenants Debt Instrument, Unused Borrowing Capacity Amount, Under Covenants Underlying Security Market Price Change Underlying Security Market Price Change, Percent Telenet Revolving Facility Telenet Revolving Facility [Member] Telenet Revolving Facility [Member] Total subscription revenue Total Subscription Revenue [Member] Total Subscription Revenue Property and equipment, net (notes 8 and 10) Total property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Video Video [Member] Video 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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 Total — fair value Investments, Fair Value Disclosure 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] 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 Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 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] 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 Business Combination [Line Items] Business Combination [Line Items] Vodafone Vodafone [Member] Vodafone Exercise Price Award Exercise Price Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Segment Reporting [Line Items] Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report 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] Proceeds received from the sale and maturities of debt securities Proceeds from Sale of Debt Securities, Available-for-Sale Debt (excluding vendor financing) Repayments of Long-Term Debt Deferred financing costs, discounts and premiums, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Liability: Derivative Liability [Abstract] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Equity Method Investments Equity Component [Domain] Equity Component [Domain] 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 Foreign currency forward and option contracts Foreign Exchange Contract [Member] Adoption Date Trading Arrangement Adoption Date Counterparty Name [Domain] Counterparty Name [Domain] Non-operating income (expense) Nonoperating Income (Expense) Wyre Revolving Facility Wyre Revolving Facility [Member] Wyre Revolving Facility Upon completion of the relevant compliance reporting requirements Debt Covenant, Scenario 1 [Member] Debt Covenant, Scenario 1 Other investments Equity Securities, FV-NI, Current Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Operating leases Present value of lease payments Operating Lease, Liability Weighted average remaining life Derivative, Average Remaining Maturity Schedule of Lease Balances Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Finance lease obligations Finance leases Present value of lease 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activities Payments for (Proceeds from) Derivative Instrument, Financing Activities Business Combination [Axis] Business Combination [Axis] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Other Other Share-Based Incentive Awards [Member] Other Share-Based Incentive Awards [Member] Condensed Consolidated Statement of Operations Income Statement [Abstract] Liberty Global shareholders: Equity, Attributable to Parent [Abstract] Fixed-line telephony Fixed-line Telephony [Member] Fixed-line Telephony Document Transition Report Document Transition Report Telenet Revolving Facility I Telenet Revolving Facility I [Member] Telenet Revolving Facility I Acquisitions and Dispositions [Abstract] Acquisitions and Dispositions [Abstract] Acquisitions and Dispositions [Abstract] Intersegment Intersegment Eliminations [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Number of subsidiaries with the most outstanding debt Number Of Subsidiaries With The Most Outstanding Debt Number Of Subsidiaries With The Most Outstanding Debt Schedule of Intangible Assets Subject to Amortization, Net Intangible Asset, Finite-Lived [Table Text Block] Total residential revenue Residential [Member] Residential [Member] Other Other [Member] Other Other Other Stock Plan [Member] Other Stock Plan Performance-based incentive awards Performance-Based Incentive Awards [Member] Performance-Based Incentive Awards [Member] City Area Code City Area Code Total property and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Wyre Capex Term Facility Wyre Capex Term Facility [Member] Wyre Capex Term Facility Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity [Domain] Entity [Domain] O2 slovakia O2 Slovakia [Member] O2 Slovakia Schedule of Other Share Based Compensation Activity Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] Number of associations of municipalities Number Of Associations Of Municipalities Number Of Associations Of Municipalities Available to loan or distribute Financing Receivable, Available To Distribute Financing Receivable, Available To Distribute Share-based compensation expense Share-based compensation expense Share-Based Payment Arrangement, Expense Percentage of legal and other third party, fees Percentage Of Legal And Other Third Party, Fees Percentage Of Legal And Other Third Party, Fees Total investments Investments AtlasEdge JV AtlasEdge JV [Member] AtlasEdge JV Class C Common Class C [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Gains included in net earnings Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] VMO2 JV And VodafoneZiggo JV VMO2 JV And VodafoneZiggo JV [Member] VMO2 JV And VodafoneZiggo JV Entity Current Reporting Status Entity Current Reporting Status Net cash used by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Changes in operating assets and liabilities, net of the effects of acquisitions and dispositions Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital Other Other Subsidiaries [Member] Relating to Other Subsidiaries not otherwise identified. Telenet Revolving Credit Facility B Telenet Revolving Credit Facility B [Member] Telenet Revolving Credit Facility B Adjustments to reconcile net earnings (loss) to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2029 Long-Term Debt, Maturity, Year Three Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] 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 Net Investment Income [Line Items] Net Investment Income [Line Items] Financial Instruments [Domain] Financial Instruments [Domain] Total Derivative assets Total derivative instruments Derivative Asset Debt Covenant [Axis] Debt Covenant [Axis] Debt Covenant Held by Liberty Global employees Employees [Member] Employees [Member] Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Underlying Securities Award Underlying Securities Amount Comprehensive earnings attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Revenue Recognition and Related Costs Revenue from Contract with Customer [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] 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) Operating-related vendor financing additions Proceeds From Operating Related Vendor Financing Additions Proceeds From Operating Related Vendor Financing Additions Other investing activities, net Payment for (Proceeds from) Other Investing Activity Weighted average discount rate, for operating leases Operating Lease, Weighted Average Discount Rate, Percent Segment Reporting [Table] Segment Reporting [Table] Total lease liabilities Lease, Liability Lease, Liability Schedule of Lease Expense and Cash Outflows from Operating and Finance Leases Lease, Cost [Table Text Block] Other current assets (notes 3, 4, 5 and 6) Other current assets Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Other Sunrise Holding [Member] Sunrise Holding Net cash proceeds Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Vodafone Group Inc. Vodafone Group Inc. [Member] Vodafone Group Inc. Operating lease payments Total Unrecorded Unconditional Purchase Obligation 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] Entity File Number Entity File Number B2B Services B2B Services [Member] B2B Services [Member] Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Measure: Measure [Axis] Equity Components [Axis] Equity Components [Axis] Other operating (notes 10 and 12) Other Cost and Expense, Operating Telenet Telenet Telenet [Member] Telenet [Member] Related party Related Party [Member] Aggregate Variable and Fixed Rate Indebtedness Aggregate Variable And Fixed Rate Indebtedness [Member] Aggregate Variable And Fixed Rate Indebtedness [Member] Net cash paid for taxes Income Tax Paid, after Refund Received ROU assets: Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Class A Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Current portion Finance Lease, Liability, Current Net earnings attributable to noncontrolling interests Net earnings attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Entity Small Business Entity Small Business Co-venturer ownership percentage Equity Method Investment, Co-Venturer Ownership Percentage Equity Method Investment, Co-Venturer Ownership Percentage Comprehensive earnings (loss) attributable to Liberty Global Shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Schedule of Reconciliation of the Beginning and Ending Balances of Assets and Liabilities Measured at Fair Value Using Significant Unobservable, or Level 3, Inputs Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets, net (notes 3, 6 and 10) Other Assets, Noncurrent 2029 Finance Lease, Liability, to be Paid, Year Three Document Type Document Type 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] 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] VMO2 JV VMO2 JV (nonconsolidated) VMO2 JV [Member] VMO2 JV Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Borrowings of debt Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Earnings (loss) before income taxes Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Number of borrowing groups Number Of Borrowing Groups Number Of Borrowing Groups Commitments and contingencies (notes 6, 9, 10, 11 and 14) Commitments and Contingencies Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Fixed fee Fixed Charges [Member] Fixed Charges Income Tax Contingency [Table] Income Tax Contingency [Table] Notional amount due from counterparty Due From Counterparty [Member] Due From Counterparty [Member] Executive Category: Executive Category [Axis] Counterparty Name [Axis] Counterparty Name [Axis] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] PEO Name PEO Name Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Other accrued and current liabilities (notes 4, 6 and 10) Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Other Other Debt [Member] Other Debt [Member] Equity-related derivative instruments Equity Contract [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] 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] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Comprehensive earnings (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Total lease expense Lease, Cost Tax Period [Axis] Tax Period [Axis] 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 Disposal Group Name [Axis] Disposal Group Name [Axis] Schedule of Investments by Accounting Method Schedule Of Investments By Accounting Method [Table Text Block] Schedule of Investments by Accounting Method [Table Text Block] Schedule of Fair Values of Derivative Instrument Assets and Liabilities Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic loss attributable to Liberty Global shareholders per share (note 13) (in dollars per share) Earnings Per Share, Basic Total current assets Assets, Current Insider Trading Arrangements [Line Items] Long-term portion Long-Term Debt, Excluding Current Maturities Valuation allowances, percent Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Short-term lease expense Short-Term Lease, Cost EdgeConneX EdgeConneX, Inc. (EdgeConneX) EdgeConneX Inc. [Member] EdgeConneX Inc. Trade receivables, net (note 3) Accounts Receivable, after Allowance for Credit Loss, Current VM Ireland Credit Facility VM Ireland Credit Facility [Member] VM Ireland Credit Facility 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 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] Unused borrowing capacity, amount Debt Instrument, Unused Borrowing Capacity, Amount Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Reclassification Reclassification, Comparability Adjustment [Policy Text Block] Vendor financing Vendor Financing [Member] Vendor Financing [Member] U.K. UNITED KINGDOM Equity Awards Adjustments Equity Awards Adjustments [Member] AE Group Sàrl (AtlasEdge JV) AE Group Sàrl (AtlasEdge JV) [Member] AE Group Sàrl (AtlasEdge JV) Schedule of Unrecorded Purchase Obligation Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block] Long-term Derivative Liability, Noncurrent Current portion of debt and finance lease obligations (notes 9 and 10) Debt, Current Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Programming commitments Programming Commitments [Member] Programming Commitments [Member] Plan Name [Axis] Plan Name [Axis] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Term of transitional services Disposal Group, Term Of Transitional Services Disposal Group, Term Of Transitional Services Other income, net Other income, net Other Nonoperating Income (Expense) Total Liberty Global shareholders Parent [Member] Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Entity Address, Country Entity Address, Country Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Accumulated foreign currency translation losses Disposal Group, Including Discontinued Operation, Foreign Currency Translation Gains (Losses) Class of Stock [Domain] Class of Stock [Domain] Operating cash outflows from finance leases (interest component) Finance Lease, Interest Payment on Liability Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Foreign currency forward and option contracts Foreign currency forward and option contracts Foreign Exchange Forward [Member] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Foreign currency and other Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Consideration transferred Business Combination, Consideration Transferred Entity Filer Category Entity Filer Category Short-term investments Short-Term Investments Finance leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Realized and unrealized gains (losses) on derivative instruments, net (note 6) Realized and unrealized losses (gains) on derivative instruments, net Total Realized and unrealized gains (losses) on derivative instruments, net Gain (Loss) on Derivative Instruments, Net, Pretax 2030 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Entity Address, Address Line Two Entity Address, Address Line Two Net earnings (loss) Net earnings (loss) Net (loss) earnings Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Interest rate caps Interest Rate Cap [Member] Total Derivative instruments Derivative Liability Entity Address, Address Line One Entity Address, Address Line One Addition to ROU assets associated with operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Income tax benefit (expense) (note 11) Income tax expense (benefit) Income Tax Expense (Benefit) Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Subscription revenue Mobile Subscription [Member] Mobile Subscription [Member] VM Ireland Ireland [Member] Ireland Intangible assets subject to amortization, net (note 8) Other Intangible Assets, Net Percentage of net present value, cost savings Percentage Of Net Present Value, Cost Savings Percentage Of Net Present Value, Cost Savings Accounting Changes and Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Number of reportable segments not disclosed flag Number Of Reportable Segments Not Disclosed Flag Number Of Reportable Segments Not Disclosed Flag Statement [Table] Statement [Table] Elimination of intercompany Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] 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 Liberty Global Europe Holdings BV Liberty Global Europe Holdings BV [Member] Liberty Global Europe Holdings BV Received cash proceeds Proceeds from Short-Term Debt Remainder of 2026 Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Damages sought Loss Contingency, Damages Sought, Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] BERMUDA