Operating leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Cross-Currency Swap 1 Cross-Currency Swap 1 [Member] Cross-Currency Swap 1 [Member] Adjustments to reconcile net earnings (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Debt (excluding vendor financing) Repayment of debt Repayments of Long-Term Debt Stock repurchase, remaining authorized amount Share Repurchase Program, Remaining Authorized, Amount Total debt and finance lease obligations Long-Term Debt and Lease Obligation, Including Current Maturities Computed “expected” tax benefit (expense) Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Schedule of Other Share Based Compensation Activity Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] Cover [Abstract] Cover [Abstract] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Net increase (decrease) in cash and cash equivalents and restricted cash Net increase (decrease) Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Percentage of voting interests acquired Interest acquired Business Acquisition, Percentage of Voting Interests Acquired Trading Symbol Trading Symbol Ownership percentage Equity Method Investment, Ownership Percentage 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 2029 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five Comprehensive earnings (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest 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] Long-term debt and finance lease obligations (notes 8 and 9) Long-term debt and finance lease obligations Long-Term Debt and Lease Obligation Non-NEOs Non-NEOs [Member] Lease liabilities: Lease Liability [Abstract] Lease Liability [Abstract] Distribution systems Distribution Systems [Member] Distribution Systems [Member] Trade receivables, allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Dividend distributions by subsidiaries to non-controlling interest owners Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders 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] Sunrise Holding Senior Notes Sunrise Holding Senior Notes Debt [Member] Sunrise Holding Senior Notes Debt Sunrise Holding SPE Notes Sunrise Holding SPE Notes [Member] Sunrise Holding SPE Notes Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Net earnings (loss) Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Fair Value Measurements Fair Value Disclosures [Text Block] Number of subsidiaries Number Of Subsidiaries Number Of Subsidiaries Award Timing Disclosures [Line Items] Realized and unrealized gains on derivative instruments, net Derivative, Gain (Loss) on Derivative, Net Investment, Name [Domain] Investment, Name [Domain] Instruments accounted for under measurement alternative Instruments Accounted For Under Measurement Alternative [Member] Instruments Accounted For Under Measurement Alternative Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Plan Name [Domain] Plan Name [Domain] Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Other assets, net (notes 3 and 5) Other Assets, Noncurrent Leases [Abstract] Leases [Abstract] Gross carrying amount Finite-Lived Intangible Assets, Gross Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Telenet Revolving Credit Facility A Telenet Revolving Credit Facility A [Member] Telenet Revolving Credit Facility A Operating Segments Operating Segments [Member] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments due to changes in subsidiaries’ equity and other, net Stockholders' Equity, Other Award Timing Method Award Timing Method [Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Additional earned awards, percent Share-based Compensation Arrangement by Share-based Payment Award, Additional Earned Awards, Percent Share-based Compensation Arrangement by Share-based Payment Award, Additional Earned Awards, Percent Weighted average remaining lease term for finance leases Finance Lease, Weighted Average Remaining Lease Term Insider Trading Policies and Procedures [Line Items] Adjustment to Compensation, Amount Adjustment to Compensation Amount Compensation Amount Outstanding Recovery Compensation Amount 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] Entity Small Business Entity Small Business Company Selected Measure Amount Company Selected Measure Amount Tabular List, Table Tabular List [Table Text Block] Significant unobservable inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Aggregate number of shares excluded from computation of EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Less: present value discount Finance Lease, Liability, Undiscounted Excess Amount Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Class C Common Class C [Member] Credit Facility [Domain] Credit Facility [Domain] 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] Goodwill (note 7) Goodwill beginning balance Goodwill ending balance Goodwill Other comprehensive earnings (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Warrants, fair value Warrants, Fair Value Disclosure Warrants, Fair Value Disclosure Entity Information [Line Items] Entity Information [Line Items] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Foreign currency forward and option contracts Foreign currency forward and option contracts Foreign Exchange Forward [Member] 2025 Lessee, Operating Lease, Liability, to be Paid, Year One Other financing activities, net Proceeds from (Payments for) Other Financing Activities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Comprehensive earnings (loss) attributable to Liberty Global shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Accrued income taxes Accrued Income Taxes, Current Weighted average discount rate, for finance leases Finance Lease, Weighted Average Discount Rate, Percent Government bonds Municipal Bonds [Member] 2025 Finance Lease, Liability, to be Paid, Year One Award Type [Axis] Award Type [Axis] Plume Design, Inc. (Plume) Plume Plume Design, Inc. (Plume) [Member] Plume Design, Inc. (Plume) Corporate debt securities Corporate Debt Securities [Member] Foreign currency translation adjustments and other Goodwill, Foreign Currency Translation Gain (Loss) Residential Service Residential Service [Member] Residential Service [Member] Total liabilities Liabilities Noncontrolling interests Equity, Attributable to Noncontrolling Interest 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 Accrued capital expenditures Accrued Capital Expenditures, Current Accrued Capital Expenditures, Current Common stock, nominal value (in dollars per share) Common Stock, Par or Stated Value Per Share Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Expiration Date Trading Arrangement Expiration Date Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Current portion Operating Lease, Liability, Current Total Shareholder Return Amount Total Shareholder Return Amount Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Other, including intersegment eliminations Geography Eliminations [Member] Other, net Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Segment Reporting, Measurement Disclosures [Abstract] Segment Reporting, Measurement Disclosures [Abstract] Unused borrowing capacity, amount Available to borrow, upon completion of the relevant compliance reporting requirements Debt Instrument, Unused Borrowing Capacity, Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Weighted average ordinary shares outstanding (diluted EPS computation) (in shares) Weighted Average Number of Shares Outstanding, Diluted MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Total Liberty Global shareholders Equity, Attributable to Parent Finance lease expense: Finance Leases, Cost [Abstract] Finance Leases, Cost [Abstract] 2028 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Litigation Case [Axis] Litigation Case [Axis] Schedule of Changes in Carrying Amount of Goodwill Schedule of Goodwill [Table Text Block] Derivative instruments (note 5) Current Derivative Asset, Current Proportion of debt associated with the return on the leveraged structured note Debt Instrument, Proportion Of Debt Associated With Return Debt Instrument, Proportion Of Debt Associated With Return Selling, general and administrative (SG&A) (notes 9 and 12) Selling, General and Administrative Expense Interest Rate Caps Interest Rate Cap [Member] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Document Fiscal Period Focus Document Fiscal Period Focus 2028 Long-Term Debt, Maturity, Year Four All Executive Categories All Executive Categories [Member] Incremental shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] ASSETS Assets [Abstract] Other comprehensive earnings (loss) Other comprehensive earnings (loss), net of taxes Other Comprehensive Income (Loss), Net of Tax Document Type Document Type Derivative Contract [Domain] Derivative Contract [Domain] VodafoneZiggo JV Receivable II VodafoneZiggo JV Receivable II [Member] VodafoneZiggo JV Receivable II Revenue and Operating Cash Flow by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Beginning of period End of period Total cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Amortized cost basis Debt Securities, Available-for-Sale, Amortized Cost Telenet Senior Secured Notes Telenet Senior Secured Notes [Member] Telenet Senior Secured Notes [Member] Noting interest percentage Equity Method Investment, Voting Interest Percentage Equity Method Investment, Voting Interest Percentage Liberty Global Parent Company [Member] Maximum Maximum [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Net carrying amount Finite-Lived Intangible Assets, Net Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Accounts payable Accounts Payable, Current Sunrise Holding Revolving Facility Sunrise Holding Revolving Facility [Member] Sunrise Holding Revolving Facility [Member] Total lease expense Lease, Cost Statistical Measurement [Axis] Statistical Measurement [Axis] Schedule of Cash Received Paid Related To Derivative Instruments Statement Of Cash Flows Location Schedule Of Cash Received Paid Related To Derivative Instruments Statement Of Cash Flows Location [Table Text Block] Schedule Of Cash Received Paid Related To Derivative Instruments Statement Of Cash Flows Location Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Dividend distributions by subsidiaries to noncontrolling interest owners Payments to Noncontrolling Interests Earnings (loss) before income taxes Earnings (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Name Outstanding Recovery, Individual Name Total residential fixed revenue Total Residential Fixed Revenue [Member] Total Residential Fixed Revenue Variable lease expense Variable Lease, Cost Title of Individual [Axis] Title and Position [Axis] Award Timing Predetermined Award Timing Predetermined [Flag] Investment, Name [Axis] Investment, Name [Axis] Customer relationships Customer Relationships [Member] Diluted earnings (loss) attributable to Liberty Global shareholders per share (in USD per share) Earnings Per Share, Diluted Interest Rate Collars Interest Rate Collar [Member] Interest Rate Collar Counterparty Name [Domain] Counterparty Name [Domain] Revenue Recognition and Related Costs Revenue from Contract with Customer [Policy Text Block] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Impairment, restructuring and other operating items, net (note 9) Impairment, restructuring and other operating items, net Impairment, restructuring and other operating items, net Restructuring, Settlement and Impairment Provisions Foreign currency transaction gains (losses), net Foreign currency transaction losses (gains), net Gain (Loss), Foreign Currency Transaction, before Tax Percent of annual incentive compensation receivable in shares Shareholder Inventive Program, Percent of Annual Incentive Compensation Shareholder Inventive Program, Percent of Annual Incentive Compensation Condensed Consolidated Balance Sheet Statement of Financial Position [Abstract] ITV plc (ITV) ITV ITV - Subject to Re-Use Rights [Member] ITV - Subject to Re-Use Rights [Member] Non-subscription revenue Business to Business Non-Subscription [Member] Business to Business Non-Subscription [Member] Realized and unrealized losses 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 Net earnings (loss) Net earnings (loss) Net (loss) earnings Net earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Income tax expense (note 10) Total income tax expense Income Tax Expense (Benefit) Non-operating income (expense): Nonoperating Income (Expense) [Abstract] Notional amount Notional amount due from counterparty Derivative, Notional Amount Short-term, separately-managed accounts (SMAs) Debt Securities, Available-for-Sale, Current Investments Investment Holdings [Text Block] Total Derivative assets Derivative instruments Derivative Asset Derivative instruments (note 5) Derivative Instruments and Hedges, Liabilities Revenue (notes 3, 4 and 15) Revenue Revenue from Contract with Customer, Excluding Assessed Tax Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Net cash provided (used) by investing activities Net Cash Provided by (Used in) Investing Activities Basis and other differences in the treatment of items associated with investments in subsidiaries and affiliates Effective Income Tax Rate Reconciliation, Decrease in Basis and Other Differences in the Treatment of Items Associated with Investments in Subsidiaries and Affiliates, Amount Effective Income Tax Rate Reconciliation, Decrease in Basis and Other Differences in the Treatment of Items Associated with Investments in Subsidiaries and Affiliates, Amount Lions Gate Entertainment Corp. (Lionsgate) Lionsgate Lionsgate [Member] Lionsgate [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Additional paid-in capital Additional Paid in Capital Number of borrowing groups Number of Borrowing Groups Number of Borrowing Groups Intangible assets subject to amortization, net (note 7) Other Intangible Assets, Net Formula E Holdings Ltd (Formula E) Formula E Formula E [Member] Formula E [Member] Property and Equipment Additions of our Reportable Segments Schedule of Reporting Capital Expenditures of Reportable Segments [Table Text Block] Schedule of Reporting Capital Expenditures of Reportable Segments [Table Text Block] Reduction of annual lease fees Reduction of Annual Lease Fees Reduction of Annual Lease Fees Percent of interest income earned on loan included in investment Percent of Interest Income Earned on Loan Included in Income (Loss) from Equity Method Investments Percent of Interest Income Earned on Loan Included in Income (Loss) from Equity Method Investments Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Legal Entity [Axis] Legal Entity [Axis] Deferred liabilities Deferred License Fees Deferred License Fees Losses included in net earnings Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] Counterparty Credit Risk Counterparty Credit Risk [Member] Counterparty Credit Risk [Member] Customer premises equipment Customer Premises Equipment [Member] Customer Premises Equipment [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Other Other, net Other Unnamed Investment [Member] Other Unnamed Investment [Member] Non-subscription revenue Mobile Non-Subscription [Member] Mobile Non-Subscription [Member] Accumulated unrealized gains (losses) Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax Revenue, remaining performance obligation, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Financial Instruments [Domain] Financial Instruments [Domain] Percentage of amounts recovered Percentage of Amounts Recovered Percentage of Amounts Recovered LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Restatement Determination Date Restatement Determination Date Weighted average life Debt Securities, Available-for-Sale, Term Long-term, SMAs Debt Securities, Available-for-Sale, Noncurrent Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Options outstanding, weighted average exercise or base price (in dollars per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Operating lease right-of-use (ROU) assets (note 9) Operating leases Operating Lease, Right-of-Use Asset Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Total cash outflows from operating and finance leases Operating and Finance Lease, Payments Operating and Finance Lease, Payments Support equipment, buildings and land Support Equipment, Buildings and Land [Member] Support Equipment, Buildings and Land [Member] Property, Plant and Equipment [Abstract] Earnings (Loss) per Share Earnings Per Share [Text Block] Operating costs and expenses (exclusive of depreciation and amortization, shown separately below): Costs and Expenses [Abstract] Fair Value Recurring Basis Unobservable Input Reconciliation Net Derivative Asset Liability Gain Loss Statement Of Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List Not Disclosed Flag Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Segments [Domain] Segments [Domain] Other debt securities Other Debt Obligations [Member] Schedule of Maturities of Financing Lease Liabilities Finance Lease, Liability, to be Paid, Maturity [Table Text Block] PEO PEO [Member] Name Trading Arrangement, Individual Name Telenet Credit Facility Telenet Credit Facility [Member] Telenet Credit Facility [Member] Net cash paid related to derivative instruments Financing activities Payments for (Proceeds from) Derivative Instrument, Financing Activities Impact of derivative instruments on borrowing costs Impact of Derivative Instruments on Borrowing Costs, Percent Increase (Decrease) Impact of Derivative Instruments on Borrowing Costs, Percent Increase (Decrease) Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Share of results of affiliates, net (note 4) Share of results of affiliates, net Equity method investment Share of results of affiliates, net Income (Loss) from Equity Method Investments Treasury shares, at cost Treasury Stock, Common, Value Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Share repurchase program, minimum repurchase requirement, percentage Share Repurchase Program, Minimum Repurchase Percentage Share Repurchase Program, Minimum Repurchase Percentage 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] Structured note Structured Notes [Member] Structured Notes Reduction in UTB Decrease in Unrecognized Tax Benefits is Reasonably Possible Due in one to five years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Swisscom MVNO Matter Swisscom MVNO Matter [Member] Swisscom MVNO Matter Local Phone Number Local Phone Number Central and Other Central and Other [Member] Central and Corporate [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Cash paid for investments Payments to Acquire Interest in Subsidiaries and Affiliates Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Realized and unrealized losses (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 and Debt, Net Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments and Debt, Net PEO Total Compensation Amount PEO Total Compensation Amount Sunrise Holding Revolving Facility B Sunrise Holding Revolving Facility B [Member] Sunrise Holding Revolving Facility B Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Common shares Common Stock [Member] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Non-performance based incentive awards Non-Performance Based Share-Based Awards [Member] Non-Performance Based Share-Based Awards [Member] Entity Central Index Key Entity Central Index Key Damages sought Loss Contingency, Damages Sought, Value Interest expense Finance Lease, Interest Expense, Netting Finance Lease, Interest Expense, Netting Value added tax, vendor financing arrangement Value Added Tax, Vendor Financing Arrangement Value Added Tax, Vendor Financing Arrangement Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] CANAL+ Polska S.A. CANAL+ Polska S.A. [Member] CANAL+ Polska S.A. Equity Equity [Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Financial Instrument [Axis] Financial Instrument [Axis] Current portion Long-Term Debt, Current Maturities Cross-Currency Swap 5 Cross-Currency Swap 5 [Member] Cross-Currency Swap 5 [Member] Segment Reporting Segment Reporting Disclosure [Text Block] 2025 Unrecorded Unconditional Purchase Obligation, to be Paid, Year One Sunrise Holding Revolving Facility Auxillary Sunrise Holding Revolving Facility Auxillary [Member] Sunrise Holding Revolving Facility Auxillary Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Share-based compensation (note 12) APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Network and connectivity commitments Network and Connectivity Commitments [Member] Network and Connectivity Commitments [Member] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Performance measures, percentage of reportable segment revenue and operating cash flow presented Performance Measures Percentage Of Reportable Segment Revenue And Operating Cash Flow Presented Performance Measures Percentage Of Reportable Segment Revenue And Operating Cash Flow Presented Class B Common Class B [Member] Title Trading Arrangement, Individual Title Consolidated Entities [Axis] Consolidated Entities [Axis] Unrecognized tax benefits Unrecognized Tax Benefits Comprehensive loss (earnings) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest City Area Code City Area Code Current liabilities: Liabilities, Current [Abstract] Investments Investments [Member] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Equity-related derivative instruments Equity Contract [Member] Capital-related vendor financing additions Proceeds From Capital Related Vendor Financing Additions Proceeds From Capital Related Vendor Financing Additions Repurchases of Liberty Global common shares Payments for Repurchase of Common Stock Long-term portion Long-Term Debt, Excluding Current Maturities Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Equity [Abstract] Equity [Abstract] Net loss (earnings) attributable to noncontrolling interests Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Accumulated earnings Retained Earnings (Accumulated Deficit) Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Notional amount due to counterparty Receives fixed rate Due To Counterparty [Member] Due To Counterparty [Member] Class of Stock [Domain] Class of Stock [Domain] Video Cable Video Subscription [Member] Cable Video Subscription [Member] VodafoneZiggo JV Loan VodafoneZiggo JV Loan [Member] VodafoneZiggo JV Loan [Member] Schedule of Debt Schedule of Debt [Table Text Block] 2026 Long-Term Debt, Maturity, Year Two Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Operating leases Present value of lease payments Operating Lease, Liability Underlying Securities Award Underlying Securities Amount PSUs Performance Shares [Member] Cross-Currency Swap 4 Cross-Currency Swap 4 [Member] Cross-Currency Swap 4 [Member] 2029 Finance Lease, Liability, to be Paid, Year Five Total residential mobile revenue Mobile Residential [Member] Mobile Residential [Member] Amendment Flag Amendment Flag Sunrise Sunrise Segment [Member] Sunrise Segment Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Depreciation and amortization Finance Lease, Right-of-Use Asset, Amortization Debt Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Long-term Derivative Liability, Noncurrent Entity Address, Postal Zip Code Entity Address, Postal Zip Code Options and SARs Options and Share Appreciation Rights (SARs) [Member] Options and Share Appreciation Rights (SARs) [Member] Interest Rate Swap Interest Rate Swap [Member] Deutsche Telekom Litigation Deutsche Telekom Litigation [Member] Deutsche Telekom Litigation [Member] Accrued interest Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Schedule of Investments [Table] Schedule of Investments [Table] Share-based compensation arrangement by share-based payment award, award expected performance Share-based Compensation Arrangement by Share-based Payment Award, Award Expected Performance Share-based Compensation Arrangement by Share-based Payment Award, Award Expected Performance Other investing activities, net Payments for (Proceeds from) Other Investing Activities Certificates of deposit Certificates of Deposit [Member] 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] Effect of exchange rate changes on cash and cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations 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] Cash received from the sale of investments Proceeds from Sale, Maturity and Collection of Investments Depreciation and amortization Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Sunrise Holding Revolving Facility A Sunrise Holding Revolving Facility A [Member] Sunrise Holding Revolving Facility A Vodafone Collar Equity-related derivative instruments Equity-Related Derivative Instruments [Member] Equity-Related Derivative Instruments [Member] Total Realized And Unrealized Gains (Losses) Due To Changes In Fair Values Of Certain Investments Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Total ROU assets Lease Asset Lease Asset Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Property and equipment, net (notes 7 and 9) Total property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Principal payments on finance leases Financing cash outflows from finance leases (principal component) Finance Lease, Principal Payments Assets Derivative Asset [Abstract] Telefonica Telefónica [Member] Telefónica Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Schedule of Stock by Class [Table] Stock, Class of Stock [Table] 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] Total assets Assets Programming and other direct costs of services (note 9) Cost of Goods and Services Sold Percentage of share based compensation expense Equity Method Investment, Percentage Of Share Based Compensation Expense Equity Method Investment, Percentage Of Share Based Compensation Expense Cross-Currency Swap 3 Cross-Currency Swap 3 [Member] Cross-Currency Swap 3 [Member] Other long-term liabilities (notes 3 and 5) Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Commitments and contingencies (notes 5, 8, 9, 10 and 14) Commitments and Contingencies Schedule of Income Tax Benefit (Expense) Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Termination Date Trading Arrangement Termination Date 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] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two 2025 Long-Term Debt, Maturity, Year One Schedule of Revenue Geographic Segments Revenue from External Customers by Geographic Areas [Table Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Net earnings (loss) attributable to Liberty Global shareholders Net Income (Loss) Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Revenue Revenue from Contract with Customer, Including Assessed Tax Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Entity File Number Entity File Number Cross-Currency Swap 2 Cross-Currency Swap 2 [Member] Cross-Currency Swap 2 [Member] Operating activities Payments for (Proceeds from) Derivative Instrument, Operating Activities Payments for (Proceeds from) Derivative Instrument, Operating Activities Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Consolidated Entities [Domain] Consolidated Entities [Domain] VodafoneZiggo JV Receivable I VodafoneZiggo JV Receivable I [Member] VodafoneZiggo JV Receivable I Non-controlling interests Noncontrolling Interest [Member] Condensed Consolidated Statement of Operations Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One VodafoneZiggo JV VodafoneZiggo JV [Member] VodafoneZiggo JV [Member] Entity Address, Address Line Two Entity Address, Address Line Two Name Forgone Recovery, Individual Name Weighted average remaining lease term for operating leases Operating Lease, Weighted Average Remaining Lease Term Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Adjustment to Compensation: Adjustment to Compensation [Axis] Net loss (earnings) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Liabilities Derivative Liability [Abstract] Document Quarterly Report Document Quarterly Report Litigation Case [Domain] Litigation Case [Domain] Accumulated other comprehensive earnings, net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Restricted cash included in other current assets and other assets, net Restricted Cash and Cash Equivalents Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Weighted average ordinary shares outstanding (basic EPS computation) (in shares) Weighted Average Number of Shares Outstanding, Basic Related Party [Axis] Related and Nonrelated Parties [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Liberty Global Belgium Holding B.V. Liberty Global Belgium Holding B.V. [Member] Liberty Global Belgium Holding B.V. Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Amortization of deferred financing costs and non-cash interest Amortization of Debt Issuance Costs and Discounts Weighted average remaining life Derivative, Average Remaining Maturity Name Awards Close in Time to MNPI Disclosures, Individual Name Interkabel Acquisition Interkabel Acquisition [Member] Interkabel Acquisition [Member] Entity Filer Category Entity Filer Category Loss Contingencies [Line Items] Loss Contingencies [Line Items] Long-term Derivative Asset, Noncurrent Investing activities Payments for (Proceeds from) Derivative Instrument, Investing Activities Statistical Measurement [Domain] Statistical Measurement [Domain] Total consolidated property and equipment additions (c) Segment, Expenditure, Addition to Long-Lived Assets Schedule of Lease Expense and Cash Outflows from Operating and Finance Leases Lease, Cost [Table Text Block] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Internally Developed Software Treatment Internally Developed Software Treatment [Member] Internally Developed Software Treatment UTB that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] 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 All Trading Arrangements All Trading Arrangements [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Realized and unrealized gains (losses) due to changes in fair values of certain investments, net (notes 4 and 6) 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 Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Long-term Debt Long-Term Debt [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Derivative [Line Items] Derivative [Line Items] Sunrise Holding Revolving Facility B, Auxillary Sunrise Holding Revolving Facility B, Auxillary [Member] Sunrise Holding Revolving Facility B, Auxillary Net cash paid for taxes Income Taxes Paid, Net Non-subscription revenue Cable Non-Subscription [Member] Cable Non-Subscription [Member] Purchase commitments Purchase Commitments [Member] Purchase Commitments [Member] Acquisitions and related adjustments Goodwill, Measurement Period Adjustment Class A Common Class A [Member] Equity Equity Method Investments Lacework, Inc. (Lacework) Lacework Lacework Inc. [Member] Lacework Inc. Pay vs Performance Disclosure [Line Items] Total debt Long-term Debt Contractual Maturities Long-term Debt Contractual Maturities Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount nexfibre JV nexfibre JV nexfibre JV [Member] nexfibre JV Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Derivative [Table] Derivative [Table] Income Tax Contingency [Table] Income Tax Contingency [Table] Schedule of Fair Values of Derivative Instrument Assets and Liabilities Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Leases Lessee, Operating Leases [Text Block] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Operating lease expense Operating Lease, Cost Long-term operating lease liabilities (note 9) Long-term portion Operating Lease, Liability, Noncurrent Interest expense Finance Lease, Interest Expense Deferred revenue (note 3) Contract with Customer, Liability, Current Entity Tax Identification Number Entity Tax Identification Number Schedule of Finite-Lived Intangible Assets by Major Class [Table] Intangible Asset, Finite-Lived [Table] Schedule of Vendor Financing Obligations Schedule of Long-Term Debt Instruments [Table Text Block] Other revenue Other Category [Member] Other Category [Member] SG&A expense Selling, General and Administrative Expenses [Member] Treasury shares, at cost Treasury Stock, Common [Member] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Intersegment eliminations Intersegment Eliminations [Member] Other operating (notes 9 and 12) Other Cost and Expense, Operating Plan Name [Axis] Plan Name [Axis] Thereafter Finance Lease, Liability, to be Paid, after Year Five Televisa Univision, Inc. (Televisa Univision) Televisa Univision Holdings Inc [Member] Televisa Univision Holdings Inc Equity Components [Axis] Equity Components [Axis] 2026 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two Total payments Finance Lease, Liability, to be Paid Other current assets (notes 3 and 4) Other assets, current Other Assets, Current Fair value Fair value SMAs Debt Securities, Available-for-Sale Balance of net assets at January 1, 2024 Balance of net assets at March 31, 2024 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Related party note receivable rate Receivable with Imputed Interest, Effective Yield (Interest Rate) Operating costs and expenses Costs and Expenses Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 2027 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three Mobile Services Mobile Services [Member] Mobile Services [Member] Geographical [Axis] Geographical [Axis] 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 2029 Lessee, Operating Lease, Liability, to be Paid, Year Five Weighted Average Weighted Average [Member] 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] Loss contingency accrual Loss Contingency Accrual Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Telenet Overdraft Facility Telenet Overdraft Facility [Member] Telenet Overdraft Facility [Member] Weighted average interest rate Debt, Weighted Average Interest Rate Other investments Equity Securities, FV-NI, Current Operating-related vendor financing additions Long Term Debt, Operating Related Additions Long Term Debt, Operating Related Additions Current assets: Assets, Current [Abstract] Consolidation Items [Axis] Consolidation Items [Axis] Broadband internet Cable Broadband Internet Subscription [Member] Cable Broadband Internet Subscription [Member] Net earnings (loss) attributable to Liberty Global shareholders Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Income Tax Contingency Income Tax Contingency [Member] Income Tax Contingency Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Product and Service [Domain] Product and Service [Domain] Short-term lease expense Short-Term Lease, Cost Goodwill [Roll Forward] Goodwill [Roll Forward] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Debt Covenant [Domain] Debt Covenant [Domain] Debt Covenant [Domain] Stock Options SARs And RSUs Stock Options SARs And RSUs [Member] Stock Options SARs And RSUs Security Exchange Name Security Exchange Name Related Party Transaction [Domain] Related Party Transaction [Domain] Interest accrued Increase (Decrease) in Accrued Interest Receivable, Net Excess of carrying amount over proportional share in investees net assets Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Schedule of Debt Securities Debt Securities, Available-for-Sale [Table Text Block] ROU assets associated with finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Common stock, issued (in shares) Common Stock, Shares, Issued Entity [Domain] Entity [Domain] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Other commitments Other Commitments [Member] Other Commitments [Member] Schedule of Unrecorded Purchase Obligation Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block] Total Derivative instruments: Derivative Liability Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] 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 Cash paid in connection with acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] 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] Related Party Related Party [Member] Interest expense Interest Expense, Nonoperating Deferred income tax expense Deferred Income Tax Expense (Benefit) Total finance lease expense Finance Lease, Cost Finance Lease, Cost Entity Address, Country Entity Address, Country Current portion of debt and finance lease obligations (notes 8 and 9) Debt, Current Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Trade receivables, net (note 3) Accounts Receivable, after Allowance for Credit Loss, Current Maximum payout, percent Share-based Compensation Arrangement by Share-based Payment Award, Maximum Payout Share-based Compensation Arrangement by Share-based Payment Award, Maximum Payout Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Total carrying amount of debt Long-Term Debt Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Long-lived Assets Long Lived Assets Disclosure [Text Block] The entire disclosure for long-lived assets. Thereafter Long-Term Debt, Maturity, after Year Five Subscription revenue Business to Business Subscription [Member] Business to Business Subscription [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Commercial paper Commercial Paper [Member] Investment Income [Table] Investment Income [Table] Realized and unrealized gains on derivative instruments, net (note 5) Realized and unrealized gains on derivative instruments, net Realized and unrealized gains on derivative instruments, net Gain (Loss) on Derivative Instruments, Net, Pretax Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Held by former Liberty Global employees Former Employees [Member] Former Employees [Member] Average price paid per share (in dollars per share) Shares Acquired, Average Cost Per Share Schedule of Investments by Accounting Method Schedule of Investments by Accounting Method [Table Text Block] Schedule of Investments by Accounting Method [Table Text Block] 2027 Finance Lease, Liability, to be Paid, Year Three Gain on sale of All3Media (note 4) Gain on sale of All3Media Gain on sale of All3Media Equity Method Investment, Realized Gain (Loss) on Disposal Vodafone Collar Loan Vodafone Collar Loan [Member] Vodafone Collar Loan Non-deductible or non-taxable foreign currency exchange results Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Amount Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Amount Total Liberty Global shareholders Parent [Member] Deferred revenue Contract with Customer, Liability 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 Current Fiscal Year End Date Current Fiscal Year End Date Less: present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Due in one year or less Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Short-term investments (measured at fair value on a recurring basis) (note 4) Short-term investments Short-Term Investments PEO Name PEO Name Vodafone - subject to re-use rights Vodafone Vodafone [Member] Vodafone Award Type [Domain] Award Type [Domain] Country Region Country Region Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Non-PEO NEO Non-PEO NEO [Member] Total investments Investments, Fair Value Disclosure Additional paid-in capital Additional Paid-in Capital [Member] Long-term portion Finance Lease, Liability, Noncurrent Class of Stock [Line Items] Class of Stock [Line Items] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Title of Individual [Domain] Title and Position [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] 2028 Finance Lease, Liability, to be Paid, Year Four Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Weighted Average Number of Shares Schedule of Weighted Average Number of Shares [Table Text Block] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Proceeds from sale of debt securities Proceeds from Sale of Debt Securities, Available-for-Sale Thereafter Unrecorded Unconditional Purchase Obligation, to be Paid, after Year Five Remainder of 2024 Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Summary of Assets and Liabilities Measured at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Switzerland SWITZERLAND Debt Covenant, Scenario 1 Debt Covenant, Scenario 1 [Member] Debt Covenant, Scenario 1 Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Long-term investments at fair value Equity Securities, FV-NI and without Readily Determinable Fair Value Schedule of Lease Balances Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Realized net gains (losses) Debt Securities, Realized Gain (Loss) Realized and unrealized losses on derivative instruments, net Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Pax8, Inc. Pax8 [Member] Pax8 Central and Other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Schedule of Investments [Line Items] Schedule of Investments [Line Items] Contractual maturity: Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling Maturity, Fair Value [Abstract] Belgium BELGIUM Vendor Financing Obligation [Roll Forward] Vendor Financing Obligation [Roll Forward] Vendor Financing Obligation Income tax examination, liability (refund) adjustment from settlement with taxing authority Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority Non-operating income (expense) Nonoperating Income (Expense) Total capital expenditures, net Payments for Capital Improvements Operating income (loss) Operating Income (Loss) Tax Year 2018 Tax Year 2018 [Member] Change in valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Other Other Share-Based Incentive Awards [Member] Other Share-Based Incentive Awards [Member] 2024 (remainder of year) Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Total liabilities and equity Liabilities and Equity Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Due in five to ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value Current Derivative Liability, Current Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] 2026 Finance Lease, Liability, to be Paid, Year Two Current portion of debt and finance lease obligations Long-Term Debt and Lease Obligation, Current Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Number of subsidiaries with the most outstanding debt Number Of Subsidiaries With The Most Outstanding Debt Number Of Subsidiaries With The Most Outstanding Debt Sunrise Holding Revolving Facility One Sunrise Holding Revolving Facility One [Member] Sunrise Holding Revolving Facility One Total residential revenue Residential [Member] Residential [Member] Other Other Stock Plan [Member] Other Stock Plan Schedule of Maturities of Debt and Capital Lease Obligations Schedule of Maturities of Long-Term Debt [Table Text Block] Addition to ROU assets associated with operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Performance-based incentive awards (b) Performance-Based Incentive Awards [Member] Performance-Based Incentive Awards [Member] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Individual: Individual [Axis] Accumulated other comprehensive earnings, net of taxes AOCI Attributable to Parent [Member] Product and Service [Axis] Product and Service [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Statement [Line Items] Statement [Line Items] Schedule of Property and Equipment Property, Plant and Equipment [Table Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Consideration transferred Business Combination, Consideration Transferred Change in Accounting Principle, Type [Axis] Change in Accounting Principle, Type [Axis] Deferred financing costs, discounts and premiums, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Number of associations of municipalities Number Of Associations Of Municipalities Number Of Associations Of Municipalities Minimum Minimum [Member] Schedule of Realized And Unrealized Gains On Derivative Instruments Schedule Of Realized And Unrealized Gains On Derivative Instruments [Table Text Block] Schedule Of Realized And Unrealized Gains On Derivative Instruments Adoption Date Trading Arrangement Adoption Date 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 Other operating expense Other Operating Income (Expense) [Member] Segments [Axis] Segments [Axis] 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] Tax Period [Axis] Tax Period [Axis] AtlasEdge JV AtlasEdge JV AtlasEdge JV [Member] AtlasEdge JV Derivative Instrument [Axis] Derivative Instrument [Axis] Total debt before deferred financing costs, discounts and premiums Total debt maturities Balance at January 1 Balance at June 30 Long-Term Debt, Gross Dividend distributions received from the VMO2 JV Proceeds from Equity Method Investment, Distribution, Return of Capital Exercise Price Award Exercise Price Arrangement Duration Trading Arrangement Duration Principal Transaction Revenue [Table] Principal Transaction Revenue [Table] Leases Lessee, Finance Leases [Text Block] Liberty Global shareholders: Equity, Attributable to Parent [Abstract] Subsidiaries Subsidiaries [Member] Sunrise Holding Bank Facility Sunrise Holding Bank Facility [Member] Sunrise Holding Bank Facility Total investments Investments Investments and related notes receivable (including $3,465.0 million and $3,408.5 million, respectively, measured at fair value on a recurring basis) (note 4) Long-term investments Long-Term Investments 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 Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Finance lease obligations Finance leases Present value of lease payments Finance Lease, Liability All Individuals All Individuals [Member] Income Tax Disclosure [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 Entities [Table] Entities [Table] Other income, net Other Nonoperating Income (Expense) Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Assets acquired under finance leases Lease Obligation Incurred International rate differences Effective Income Tax Rate Reconciliation, Decrease in Foreign Income Tax Rate Differential, Amount Effective Income Tax Rate Reconciliation, Decrease in Foreign Income Tax Rate Differential, Amount Debt Covenant [Axis] Debt Covenant [Axis] Debt Covenant Held by Liberty Global employees: Employees [Member] Employees [Member] Ownership interest acquired Business Acquisition, Percent Of Interests Acquired Business Acquisition, Percent Of Interests Acquired Details of end of period cash and cash equivalents and restricted cash: Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract] 2024 (remainder of year) Long-Term Debt, Maturity, Remainder of Fiscal Year Operating-related vendor financing additions Proceeds From Operating Related Vendor Financing Additions Proceeds From Operating Related Vendor Financing Additions Related Party [Domain] Related and Nonrelated Parties [Domain] Total lease liabilities Lease, Liability Lease, Liability All3Media All3Media Group [Member] All3Media [Member] Sunrise Holding Sunrise Holding Sunrise Holding [Member] Sunrise Holding Vodafone Group Inc. Vodafone Group Inc. [Member] Vodafone Group Inc. Stock repurchased (in shares) Stock Repurchased During Period, Shares B2B Services B2B Services [Member] B2B Services [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Measure: Measure [Axis] Investments [Abstract] Investments [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Telenet Telenet Telenet [Member] Telenet [Member] 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] Total liabilities Liabilities, Fair Value Disclosure 2029 Long-Term Debt, Maturity, Year Five Co-venturer ownership percentage Equity Method Investment, Co-Venturer Ownership Percentage Equity Method Investment, Co-Venturer Ownership Percentage Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Reclassification adjustments included in net earnings (loss) Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Finance leases Finance Lease, Right-of-Use Asset, after Accumulated Amortization Equity Component [Domain] Equity Component [Domain] Cash and cash equivalents and restricted cash: Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Foreign currency translation adjustments and other, net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Entity Shell Company Entity Shell Company SMAs SMAs [Member] SMAs Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate assets associated with incremental costs to obtain a contract and contract fulfillment costs Capitalized Contract Cost, Net VMO2 JV VMO2 JV [Member] VMO2 JV Statement [Table] Statement [Table] Programming costs Programming and Copyright Costs Programming and Copyright Costs Ireland IRELAND Counterparty Name [Axis] Counterparty Name [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Total property and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Notional amount due from counterparty Pays fixed rate Due From Counterparty [Member] Due From Counterparty [Member] Capital expenditures, net Payments to Acquire Productive Assets Quoted prices in active markets for identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Total current assets Assets, Current Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Tax Period [Domain] Tax Period [Domain] Options exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number 2027 Long-Term Debt, Maturity, Year Three Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Changes in operating assets and liabilities, net of the effects of acquisitions and dispositions Increase (Decrease) in Operating Capital Total Unrecorded Unconditional Purchase Obligation Other Other Intangible Assets [Member] Income Taxes Income Tax Disclosure [Text Block] Repurchases and cancellations of Liberty Global common shares (note 11) Stock Repurchased and Retired During Period, Value 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Non-deductible or non-taxable interest and other expenses Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Schedule of Revenue by Major Category Revenue from External Customers by Products and Services [Table Text Block] Net Investment Income [Line Items] Net Investment Income [Line Items] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Weighted average discount rate, for operating leases Operating Lease, Weighted Average Discount Rate, Percent Net cash provided (used) by financing activities Net Cash Provided by (Used in) Financing Activities Cash received in connection with the sale of All3Media Proceeds from Sale of Equity Method Investments Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Credit Facility [Axis] Credit Facility [Axis] Other Other Debt [Member] Other Debt [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Estimated fair value Long-Term Debt, Fair Value Entity Registrant Name Entity Registrant Name Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Percent of remaining results of operations included in investment Percent of Remaining Results of Operations Included in Income (Loss) from Equity Method Investments Percent of Remaining Results of Operations Included in Income (Loss) from Equity Method Investments Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Fair Value as of Grant Date Award Grant Date Fair Value Affiliate Affiliated Entity [Member] Related party note receivable Receivable with Imputed Interest, Face Amount Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Equity (note 11): Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Geographical [Domain] Geographical [Domain] Amortization related to contract costs Capitalized Contract Cost, Amortization Summary of Stock-Based Compensation Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] EdgeConneX, Inc. (EdgeConneX) EdgeConneX EdgeConneX Inc. [Member] EdgeConneX Inc. Title of 12(b) Security Title of 12(b) Security Common stock Common Stock, Value, Issued VM Ireland Credit Facility VM Ireland Credit Facility [Member] VM Ireland Credit Facility Operating cash outflows from finance leases (interest component) Finance Lease, Interest Payment on Liability Other Other Equity Related Derivative Instrument [Member] Other Equity Related Derivative Instrument [Member] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Adjusted EBITDA Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Vendor financing Vendor Financing [Member] Vendor Financing [Member] Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Basic earnings (loss) attributable to Liberty Global shareholders per share (in USD per share) Earnings Per Share, Basic Operating cash outflows from operating leases Operating Lease, Payments Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Programming commitments Programming Commitments [Member] Programming Commitments [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Schedule of Goodwill [Table] Goodwill [Table] Total current liabilities Liabilities, Current Dividends received Proceeds from Equity Method Investment, Distribution Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Pension-related adjustments and other Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Property and equipment additions: Equity Method Investment, Summarized Financial Information, Payment to Acquire Property, Plant and Equipment Equity Method Investment, Summarized Financial Information, Payment to Acquire Property, Plant and Equipment Share-based Compensation Share-Based Payment Arrangement [Text Block] Slovakia SLOVAKIA Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Entity Address, City or Town Entity Address, City or Town Borrowings of debt Proceeds from Issuance of Long-Term Debt Leases Lessee, Leases [Policy Text Block] Basis Swaps Basis Swap [Member] Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Change in Accounting Principle, Type [Domain] Change in Accounting Principle, Type [Domain] Share-based compensation expense Share-based compensation expense Share-Based Payment Arrangement, Expense Income tax penalties and interest expense Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Loss Contingencies [Table] Loss Contingencies [Table] Business Acquisition [Axis] Business Acquisition [Axis] Schedule of Intangible Assets Subject to Amortization, Net Schedule of Finite-Lived Intangible Assets [Table Text Block] Foreign currency and other Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net 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] Finance leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Revenue Recognition and Related Costs Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Fixed-line telephony Cable Fixed-line Telephony Subscription [Member] Cable Fixed-line Telephony Subscription [Member] Aggregate purchase price Treasury Stock, Value, Acquired, Cost Method Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Total assets Assets, Fair Value Disclosure Other accrued and current liabilities (note 9) Other Accrued Liabilities, Current 2024 (remainder of year) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Deferred financing costs, discounts and premiums, net Debt Instrument, Unamortized Discount (Premium), Net Document Period End Date Document Period End Date Current portion Finance Lease, Liability, Current Aviatrix Systems, Inc. (Aviatrix) Aviatrix Aviatrix Systems, Inc. [Member] Aviatrix Systems, Inc. Total payments Lessee, Operating Lease, Liability, to be Paid Cross-currency and interest rate derivative contracts Cross-currency and interest rate derivative contracts Cross Currency Interest Rate Contract [Member] Other than options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three Telenet Wyre Transaction Telenet Wyre Transaction [Member] Telenet Wyre Transaction Other Other Contract [Member] Revenue recognized Contract with Customer, Liability, Revenue Recognized Foreign currency forward and option contracts Foreign Exchange Contract [Member] Document Transition Report Document Transition Report Subscription revenue Mobile Subscription [Member] Mobile Subscription [Member] Percentage of net present value, cost savings Percentage of Net Present Value, Cost Savings Percentage of Net Present Value, Cost Savings Entity Current Reporting Status Entity Current Reporting Status Accumulated earnings Retained Earnings [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 RSUs Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Payment to acquire investment Payments to Acquire Debt Securities, Available-for-Sale Company Selected Measure Name Company Selected Measure Name