Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Debt Securities Debt Securities, Available-for-Sale [Table Text Block] 2030 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional paid-in capital Additional Paid-in Capital [Member] Assets acquired under finance leases Lease Obligation Incurred Tabular List, Table Tabular List [Table Text Block] Principal payments on capital-related vendor financing Principal payments on capital-related vendor financing Repayments Of Long Term Debt On Capital Financing From Vendors Repayments Of Long Term Debt On Capital Financing From Vendors Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Lease liabilities: Lease Liability [Abstract] Lease Liability [Abstract] Distribution systems Distribution Systems [Member] Distribution Systems [Member] Position [Axis] Position [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Revenue Recognition and Related Costs Revenue from Contract with Customer [Text Block] Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Interest Rate Caps Interest Rate Cap [Member] Adjustment to Compensation, Amount Adjustment to Compensation Amount Deferred financing costs, discounts and premiums, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Nexfibre Networks Limited (nexfibre JV) Nexfibre Networks Limited (nexfibre JV) [Member] Nexfibre Networks Limited (nexfibre JV) Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Instruments accounted for under measurement alternative Instruments Accounted For Under Measurement Alternative [Member] Instruments Accounted For Under Measurement Alternative Employee Stock Option Share-Based Payment Arrangement, Option [Member] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Total Liberty Global shareholders Equity, Attributable to Parent Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Other comprehensive earnings (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Principal Transaction Revenue [Line Items] Principal Transaction Revenue [Line Items] Schedule of Property and Equipment Property, Plant and Equipment [Table Text Block] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Maximum Maximum [Member] Options exercisable, weighted average exercise price or base price (in dollars per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Net earnings attributable to noncontrolling interests Net earnings from continuing operations attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net carrying amount Finite-Lived Intangible Assets, Net Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Accumulated unrealized gains (losses) Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Earnings (loss) from continuing operations before income taxes Earnings (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Intangible assets subject to amortization, net (note 8) Other Intangible Assets, Net Comprehensive earnings attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Net earnings (loss) from continuing operations attributable to Liberty Global shareholders Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Schedule of Stock-Based Compensation Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Current portion Operating Lease, Liability, Current Interest expense Finance Lease, Interest Expense Document Fiscal Period Focus Document Fiscal Period Focus Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Sunrise Spinoff Sunrise Spinoff [Member] Sunrise Spinoff Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Basic Share Award Type [Axis] Award Type [Axis] Liberty Global Parent Company [Member] Schedule of Business Acquisition, Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Sunrise Entities Sunrise Entities [Member] Sunrise Entities Warrants, fair value Warrants, Fair Value Disclosure Warrants, Fair Value Disclosure Valuation allowances, percent Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Entity Address, City or Town Entity Address, City or Town Weighted average discount rate, for finance leases Finance Lease, Weighted Average Discount Rate, Percent Continuing operations Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount RSUs Restricted Stock Units (RSUs) [Member] Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Remainder of 2025 Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Plume Plume Design, Inc. (Plume) [Member] Plume Design, Inc. (Plume) Consideration transferred Business Combination, Consideration Transferred Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Residential Service Residential Service [Member] Residential Service [Member] Weighted average remaining lease term for finance leases Finance Lease, Weighted Average Remaining Lease Term Options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Repayments of lines of credit Repayments of Lines of Credit Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Revenue Revenue from Contract with Customer, Including Assessed Tax Restricted cash included in other current assets and other assets, net Restricted Cash and Cash Equivalent Less: present value discount Finance Lease, Liability, Undiscounted Excess Amount Accrued capital expenditures Accrued Capital Expenditures, Current Accrued Capital Expenditures, Current Class C Common Class C [Member] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Non-subscription revenue Non-subscription Revenue [Member] Non-subscription Revenue Accrued income taxes Accrued Income Taxes, Current Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Share-based compensation arrangement by share-based payment award, cap, percent Share-based Compensation Arrangement by Share-based Payment Award, Cap, Percent Share-based Compensation Arrangement by Share-based Payment Award, Cap, Percent Award recipients earning percent Share-based Compensation Arrangement by Share-based Payment Award, Award Recipients Earning, Percent Share-based Compensation Arrangement by Share-based Payment Award, Award Recipients Earning, Percent Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income tax benefit (expense) (note 11) Income tax expense (benefit) Income Tax Expense (Benefit) Broadband internet Broadband Internet [Member] Broadband Internet Discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Class B Common Class B [Member] Balance of net assets at January 1, 2025 Balance of net assets at March 31, 2024 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Finance lease expense: Finance Leases, Cost [Abstract] Finance Leases, Cost [Abstract] Maximum borrowing capacity, period increase (decrease) Line Of Credit Facility, Maximum Borrowing Capacity, Period Increase (Decrease) Line Of Credit Facility, Maximum Borrowing Capacity, Period Increase (Decrease) Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Acquisitions and Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Debt instrument, proportion of debt associated with return Debt Instrument, Proportion Of Debt Associated With Return Debt Instrument, Proportion Of Debt Associated With Return Other than options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Investments and related notes receivable (including $1,930.0 million and $2,907.7 million, respectively, measured at fair value on a recurring basis) (note 5) Long-term investments Long-Term Investments Proceeds from sale of debt securities Proceeds from Sale of Debt Securities, Available-for-Sale Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] VodafoneZiggo JV Receivable II VodafoneZiggo JV Receivable II [Member] VodafoneZiggo JV Receivable II 2029 Finance Lease, Liability, to be Paid, Year Four Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Trade Accounts Receivable Trade Accounts Receivable [Member] Telenet Senior Secured Notes Telenet Senior Secured Notes [Member] Telenet Senior Secured Notes [Member] Discontinued operations Interest Paid, Discontinued Operations Deferred financing costs, discounts and premiums, net Debt Instrument, Unamortized Discount (Premium), Net Entity Address, Country Entity Address, Country Principal payments on finance leases Financing cash outflows from finance leases (principal component) Finance Lease, Principal Payments Tax Year 2018 Tax Year 2018 [Member] Sunrise Holding Revolving Facility Sunrise Holding Revolving Facility [Member] Sunrise Holding Revolving Facility [Member] Unused borrowing capacity, amount Available to borrow, upon completion of the relevant compliance reporting requirements Debt Instrument, Unused Borrowing Capacity, Amount Total current liabilities Liabilities, Current Discontinued operations Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Discontinued Operation 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 Individual: Individual [Axis] Total property and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Telenet Facility AU Telenet Facility AU [Member] Telenet Facility AU ROU assets associated with finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Entities [Table] Entities [Table] Total residential fixed revenue Total Residential Fixed Revenue [Member] Total Residential Fixed Revenue Variable Charges Variable Charges [Member] Variable Charges Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Debt (excluding vendor financing) Repayment of debt Repayments of Long-Term Debt Entity Interactive Data Current Entity Interactive Data Current Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Interest Rate Collars Interest Rate Collar [Member] Interest Rate Collar Revenue Recognition and Related Costs Revenue from Contract with Customer [Policy Text Block] Current portion of debt and finance lease obligations Long-Term Debt and Lease Obligation, Current Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Percent of annual incentive compensation receivable in shares Shareholder Inventive Program, Percent of Annual Incentive Compensation Shareholder Inventive Program, Percent of Annual Incentive Compensation Ownership [Domain] Ownership [Domain] ITV plc (ITV) ITV ITV - Subject to Re-Use Rights [Member] ITV - Subject to Re-Use Rights [Member] 2027 Finance Lease, Liability, to be Paid, Year Two Non-subscription revenue Business to Business Non-Subscription [Member] Business to Business Non-Subscription [Member] Other assets, net (notes 3, 6 and 10) Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Maturities of Debt and Capital Lease Obligations Schedule of Maturities of Long-Term Debt [Table Text Block] 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] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash paid for investments Payments to Acquire Interest in Subsidiaries and Affiliates Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Deferred revenue (note 3) Contract with Customer, Liability, Current Schedule of Fair Values of Derivative Instrument Assets and Liabilities Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Lionsgate Lionsgate [Member] Lionsgate [Member] Long Long [Member] Number of borrowing groups Number of Borrowing Groups Number of Borrowing Groups Formula E Formula E Formula E [Member] Formula E [Member] Schedule of 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] Long-term portion Long-Term Debt, Excluding Current Maturities 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 Deferred liabilities Deferred License Fees Deferred License Fees Gross carrying amount Finite-Lived Intangible Assets, Gross Reclassification adjustment included in net earnings (loss) Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax 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] Counterparty Credit Risk Counterparty Credit Risk [Member] Counterparty Credit Risk [Member] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two CPE Customer Premises Equipment [Member] Customer Premises Equipment [Member] Accumulated other comprehensive earnings (loss), net of taxes AOCI Attributable to Parent [Member] Trade receivables, allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Other Other, net Other Unnamed Investment [Member] Other Unnamed Investment [Member] Non-subscription revenue Mobile Non-Subscription [Member] Mobile Non-Subscription [Member] Operating income Disposal Group, Including Discontinued Operation, Operating Income (Loss) Ownership [Axis] Ownership [Axis] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Impairment, restructuring and other operating items, net (note 10) Impairment, restructuring and other operating items, net Impairment, restructuring and other operating items, net Restructuring, Settlement and Impairment Provisions Fair Value as of Grant Date Award Grant Date Fair Value Percentage of amounts recovered Percentage of Amounts Recovered Percentage of Amounts Recovered Schedule of Vendor Financing Obligations Schedule of Long-Term Debt Instruments [Table Text Block] Incremental shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Title of Individual [Domain] Title and Position [Domain] Operating costs and expenses Operating expenses: Costs and Expenses Document Quarterly Report Document Quarterly Report Schedule of Other Share Based Compensation Activity Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] Estimated fair value Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Total investments Investments Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Share price appreciation percent Share-based Compensation Arrangement by Share-based Payment Award, Share Price Appreciation, Percent Share-based Compensation Arrangement by Share-based Payment Award, Share Price Appreciation, Percent 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] Continuing operations Income Taxes Paid, Continuing Operations Income Taxes Paid, Continuing Operations Non-PEO NEO Non-PEO NEO [Member] Position [Domain] Position [Domain] Other Other Intangible Assets [Member] 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 Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Noncontrolling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disposed of by sale Discontinued Operations, Disposed of by Sale [Member] Compensation Amount Outstanding Recovery Compensation Amount Thereafter Unrecorded Unconditional Purchase Obligation, to be Paid, after Year Five Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Schedule of Realized and Unrealized Losses on Derivative Instruments Schedule Of Realized And Unrealized Gains Losses On Derivative Instruments [Table Text Block] Schedule Of Realized And Unrealized Gains Losses On Derivative Instruments [Table Text Block] Foreign currency forward and option contracts Foreign Exchange Contract [Member] Certificates of deposit Certificates of Deposit [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue recognized Contract with Customer, Liability, Revenue Recognized Schedule of Investments [Line Items] Schedule of Investments [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Effective income tax rate reconciliation, foreign income tax rate differential, percent Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Total reportable segment revenue Revenue From Contract With Customer, Excluding Assessed Tax, Including Nonconsolidated Items Revenue From Contract With Customer, Excluding Assessed Tax, Including Nonconsolidated Items Telenet Credit Facility Telenet Credit Facility [Member] Telenet Credit Facility [Member] 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 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) 2025 (remainder of year) Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Accumulated other comprehensive earnings (loss), net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax Long-term debt and finance lease obligations (notes 9 and 10) Long-term debt and finance lease obligations Long-Term Debt and Lease Obligation 2026 Long-Term Debt, Maturity, Year One Cash paid for interest: Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] Financial Instruments [Domain] Financial Instruments [Domain] Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases 2030 Long-Term Debt, Maturity, Year Five PSUs Performance Shares [Member] Share repurchase program, minimum repurchase requirement, percentage Share Repurchase Program, Minimum Repurchase Percentage Share Repurchase Program, Minimum Repurchase Percentage Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Net Investment Income [Line Items] Net Investment Income [Line Items] Structured notes Structured Notes [Member] Structured Notes Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Acquisitions and related adjustments Goodwill, Measurement Period Adjustment Company Selected Measure Name Company Selected Measure Name Central and Other Central and Other [Member] Central and Corporate [Member] Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Weighted average strike rate Derivative, Average Swaption Interest Rate Accounts payable Accounts Payable, Current Operating cash outflows from operating leases Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Collateral Held [Domain] Collateral Held [Domain] Tax Period [Axis] Tax Period [Axis] Realized and unrealized gains due to changes in fair values of certain investments, net Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments and Debt, Net Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments and Debt, Net Goodwill [Roll Forward] Goodwill [Roll Forward] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Revenue Disposal Group, Including Discontinued Operation, Revenue Weighted average common shares outstanding (diluted EPS computation) (in shares) Weighted Average Number of Shares Outstanding, Diluted Investing activities Payments for (Proceeds from) Derivative Instrument, Investing Activities Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] Entity Small Business Entity Small Business Interest acquired Business Combination, Voting Equity Interest Acquired, Percentage Income Tax Disclosure [Abstract] Income tax penalties and interest expense Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Other operating (notes 10 and 13) Other Cost and Expense, Operating Weighted average remaining life Derivative, Average Remaining Maturity Document Transition Report Document Transition Report Non-performance based incentive awards Non-Performance Based Share-Based Awards [Member] Non-Performance Based Share-Based Awards [Member] Long-term Debt Long-Term Debt [Member] Total payments Finance Lease, Liability, to be Paid Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Income Taxes Income Tax Disclosure [Text Block] Class A Common Class A [Member] UNITED KINGDOM UNITED KINGDOM Value added tax, vendor financing arrangement Value Added Tax, Vendor Financing Arrangement Value Added Tax, Vendor Financing Arrangement Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] 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). CANAL+ Polska S.A. [Member] CANAL+ Polska S.A. Schedule of Investments [Table] Schedule of Investments [Table] Short-term lease expense Short-Term Lease, Cost Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Average price paid per share (in dollars per share) Shares Acquired, Average Cost Per Share Document Type Document Type Significant unobservable inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Earnings (Loss) per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Network and connectivity commitments Network and Connectivity Commitments [Member] Network and Connectivity Commitments [Member] Percent of awards that may be banked Share-based Compensation Arrangement by Share-based Payment Award, Percent Of Awards That May Be Banked Share-based Compensation Arrangement by Share-based Payment Award, Percent Of Awards That May Be Banked Performance measures percentage of 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 Variable lease expense Variable Lease, Cost Total consolidated revenue Revenue Total Revenue from Contract with Customer, Excluding Assessed Tax Investment Income [Table] Investment Income [Table] Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Loss contingency accrual Loss Contingency Accrual Gain on sale of All3Media (note 5) Gain on sale of All3Media Equity Method Investment, Realized Gain (Loss) on Disposal Discontinued operations Income Taxes Paid, Discontinued Operations Income Taxes Paid, Discontinued Operations Licenses Licenses [Member] Licenses Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Disposal Group Name [Axis] Disposal Group Name [Axis] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Term Derivative, Term of Contract Entity Information [Line Items] Entity Information [Line Items] Capital-related vendor financing additions Proceeds From Capital Related Vendor Financing Additions Proceeds From Capital Related Vendor Financing Additions Loss before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Current liabilities: Liabilities, Current [Abstract] Quoted prices in active markets for identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Diluted earnings (loss) attributable to Liberty Global shareholders per share (in USD per share) Earnings Per Share, Diluted Trade receivables, net (note 3) Accounts Receivable, after Allowance for Credit Loss, Current Notional amount due to counterparty Due To Counterparty [Member] Due To Counterparty [Member] VodafoneZiggo JV Loan VodafoneZiggo JV Loan [Member] VodafoneZiggo JV Loan [Member] Long-term investments at fair value Equity Securities, FV-NI and without Readily Determinable Fair Value Herndon Topco Herndon Topco [Member] Herndon Topco Consolidation Items [Domain] Consolidation Items [Domain] Loss from discontinued operations, net of taxes (note 4) Loss from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Cross-Currency Swap 4 Cross-Currency Swap 4 [Member] Cross-Currency Swap 4 [Member] Short-term, separately-managed accounts (SMAs) Debt Securities, Available-for-Sale, Current Repurchases and cancellations of Liberty Global common shares (note 12) Stock Repurchased and Retired During Period, Value Total residential mobile revenue Mobile Residential [Member] Mobile Residential [Member] LUXEMBOURG LUXEMBOURG Adjustments due to changes in subsidiaries’ equity and other, net Stockholders' Equity, Other 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 Less: present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total Income Taxes Paid, Net Total debt before deferred financing costs, discounts and premiums Total debt maturities Balance at January 1 Balance at June 30 Long-Term Debt, Gross Options and SARs Options and Share Appreciation Rights (SARs) [Member] Options and Share Appreciation Rights (SARs) [Member] Total payments Lessee, Operating Lease, Liability, to be Paid Subsidiaries Subsidiaries [Member] 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 Deutsche Telekom Litigation Deutsche Telekom Litigation [Member] Deutsche Telekom Litigation [Member] 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] Realized and unrealized gains (losses) on derivative instruments, net (note 6) Realized and unrealized losses (gains) on derivative instruments, net Realized and unrealized gains (losses) on derivative instruments, net Gain (Loss) on Derivative Instruments, Net, Pretax Intersegment Intersegment Eliminations [Member] Expiration Date Trading Arrangement Expiration Date 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] Equity (note 12): Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Investments Investments [Member] 2026 Unrecorded Unconditional Purchase Obligation, to be Paid, Year One Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Collateral Held [Axis] Collateral Held [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] 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 Income tax (benefit) expense Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Total ROU assets Lease Asset Lease Asset Financial Instrument [Axis] Financial Instrument [Axis] Condensed Consolidated Balance Sheet Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Foreign currency forward and option contracts Foreign currency forward and option contracts Foreign Exchange Forward [Member] Net income from investments Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Amount Telefonica Telefónica [Member] Telefónica Current portion Finance Lease, Liability, Current Borrowings of debt Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Percentage of share based compensation expense Equity Method Investment, Percentage Of Share Based Compensation Expense Equity Method Investment, Percentage Of Share Based Compensation Expense Total Derivative instruments: Derivative Liability Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Schedule of Assets and Liabilities Measured at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Other investments Equity Securities, FV-NI, Current Unrecognized tax benefits Unrecognized Tax Benefits Excluded potentially dilutive employee share-based incentive awards (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Total Total Unrecorded Unconditional Purchase Obligation Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] VM Ireland Revolving Facility VM Ireland Revolving Facility [Member] VM Ireland Revolving Facility 2027 Long-Term Debt, Maturity, Year Two Leases Lessee, Operating Leases [Text Block] Net cash used by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] 2027 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two Long-term, SMAs Debt Securities, Available-for-Sale, Noncurrent Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Stock repurchase, remaining authorized amount Share Repurchase Program, Remaining Authorized, Amount Programming and other direct costs of services (note 10) Programming and other direct costs of services: Cost of Product and Service Sold 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] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Operating activities Payments for (Proceeds from) Derivative Instrument, Operating Activities Payments for (Proceeds from) Derivative Instrument, Operating Activities Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] VodafoneZiggo JV Receivable I VodafoneZiggo JV Receivable I [Member] VodafoneZiggo JV Receivable I Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount VodafoneZiggo JV VodafoneZiggo JV VodafoneZiggo JV [Member] VodafoneZiggo JV [Member] Entity Tax Identification Number Entity Tax Identification Number Cash received in connection with the sale of All3Media Proceeds from Sale of Equity Method Investments 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 Short Short [Member] Schedule of Weighted Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Common stock, issued (in shares) Common Stock, Shares, Issued Weighted average remaining lease term for operating leases Operating Lease, Weighted Average Remaining Lease Term 2029 Long-Term Debt, Maturity, Year Four Schedule of Changes in Carrying Amount of Goodwill Schedule of Goodwill [Table Text Block] Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Derivative instruments (note 6) Current Derivative Asset, Current Total Shareholder Return Amount Total Shareholder Return Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] All other category Central and Other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Effective income tax rate reconciliation, foreign currency translation, percent Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Percent Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Percent 2025 (remainder of year) Long-Term Debt, Maturity, Remainder of Fiscal Year Other Other Immaterial Investments [Member] Other Immaterial Investments Assets: Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract] Net increase in cash and cash equivalents and restricted cash: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation [Abstract] Stock repurchased (in shares) Stock Repurchased During Period, Shares Investments Investment Holdings [Text Block] 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 Discontinued operation after disposal, revenue Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Revenue Statement [Line Items] Statement [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Interkabel Acquisition Interkabel Acquisition [Member] Interkabel Acquisition [Member] Common shares Common Stock [Member] Finance leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Total Net increase Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Statistical Measurement [Domain] Statistical Measurement [Domain] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five 2025 (remainder of year) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Related Party Transaction [Axis] Related Party Transaction [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Interest Rate Swap Interest Rate Swap [Member] Share of results of affiliates, net (note 5) Share of results of affiliates, net Equity method investment Income (Loss) from Equity Method Investments Leases [Abstract] Leases [Abstract] VM Ireland VM Ireland [Member] VM Ireland Repayments and repurchases of debt and finance lease obligations: Repayments And Repurchases Of Debt And Finance Lease Obligations [Abstract] Repayments And Repurchases Of Debt And Finance Lease Obligations Basic earnings (loss) attributable to Liberty Global shareholders per share (note 14): Earnings Per Share, Basic [Abstract] Realized and unrealized gains (losses) due to changes in fair values of certain investments, net (notes 5 and 7) 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 Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments, Net Schedule of Classes of Assets and Liabilities Held for Sale Disposal Groups, Including Discontinued Operations [Table Text Block] Schedule of Unrecorded Purchase Obligation Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block] Purchase commitments Purchase Commitments [Member] Purchase Commitments [Member] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic earnings (loss) attributable to Liberty Global shareholders per share (in USD per share) Earnings Per Share, Basic Lacework Lacework Inc. [Member] Lacework Inc. Commercial paper Commercial Paper [Member] Total debt Long-term Debt Contractual Maturities Long-term Debt Contractual Maturities Net cash used by financing activities of continuing operations Cash Provided by (Used in) Financing Activity, Continuing Operation nexfibre JV nexfibre JV [Member] nexfibre JV Other comprehensive earnings (loss) Other comprehensive earnings (loss), net of taxes Other Comprehensive Income (Loss), Net of Tax Schedule of Performance Measures of our Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Interest accrued Increase (Decrease) in Accrued Interest Receivable, Net Affiliate Affiliated Entity [Member] 2028 Finance Lease, Liability, to be Paid, Year Three Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Counterparty to dispose (in shares) Counterparty To Dispose Shares Counterparty To Dispose Shares Net earnings from continuing operations attributable to Liberty Global shareholders (in millions) Business Combination, Pro Forma Information, Pro Forma Income (Loss) from Continuing Operations, after Tax Proceeds from sale of other investments Proceeds from Sale of Other Investments Share-based compensation expense Share-based compensation expense Share-Based Payment Arrangement, Expense Tax Period [Domain] Tax Period [Domain] Secured debt Secured Debt Debt issued, percent of par Debt Instrument, Issuance Percent Of Par Debt Instrument, Issuance Percent Of Par Current assets: Assets, Current [Abstract] Total liabilities and equity Liabilities and Equity Other revenue Other Category [Member] Other Category [Member] Beginning of period End of period Total cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Total consolidated property and equipment additions Segment, Expenditure, Addition to Long-Lived Assets Accounting Policies [Abstract] Televisa Univision, Inc. (Televisa Univision) Televisa Univision Televisa Univision Holdings Inc [Member] Televisa Univision Holdings Inc Fixed fees Debt Instrument, Fee Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Treasury shares, at cost Treasury Stock, Common [Member] Earnings (loss) from continuing operations Earnings (loss) from continuing operations Earnings (loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Pay vs Performance Disclosure [Line Items] Operating leases Present value of lease payments Operating Lease, Liability Depreciation and amortization Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Finance Lease, Right-of-Use Asset, Amortization Mobile Services Mobile Services [Member] Mobile Services [Member] Other long-term liabilities (notes 3 and 6) Other Liabilities, Noncurrent Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Changes in current liabilities related to capital expenditures Increase (Decrease) in Current Liabilities Related to Capital Expenditures Increase (Decrease) in Current Liabilities Related to Capital Expenditures Excess of carrying amount over proportional share in investees net assets Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Current portion Long-Term Debt, Current Maturities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Comprehensive earnings (loss) attributable to Liberty Global shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Telenet Overdraft Facility Telenet Overdraft Facility [Member] Telenet Overdraft Facility [Member] U.K. And Netherlands U.K. And Netherlands [Member] U.K. And Netherlands Secured Debt Secured Debt [Member] Class of Stock [Line Items] Class of Stock [Line Items] Net loss attributable to Liberty Global shareholders Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent U.K., Belgium and Netherlands U.K., Belgium and Netherlands [Member] U.K., Belgium and Netherlands Operating-related vendor financing additions Long Term Debt, Operating Related Additions Long Term Debt, Operating Related Additions Income Tax Contingency [Table] Income Tax Contingency [Table] Total carrying amount of debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Assets Income Tax Contingency Income Tax Contingency [Member] Income Tax Contingency Geographical [Domain] Geographical [Domain] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Debt Covenant [Domain] Debt Covenant [Domain] Debt Covenant [Domain] Reportable Segment Reportable Segment [Member] Reportable Segment Formula E Acquisition Formula E Acquisition [Member] Formula E Acquisition 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] 2026 Finance Lease, Liability, to be Paid, Year One Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Addition to ROU assets associated with operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Equity Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Operating leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Related Party Related Party [Member] Basic earnings from continuing operations attributable to Liberty Global shareholders per share (in dollars per share) Business Acquisition, Pro Forma Income (Loss) From Continuing Operations, Net Of Tax, Basic Business Acquisition, Pro Forma Income (Loss) From Continuing Operations, Net Of Tax, Basic Plan Name [Axis] Plan Name [Axis] PEO PEO [Member] Cash received from the sale of investments Proceeds from Sale, Maturity and Collection of Investments Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Other commitments Other Commitments [Member] Other Commitments [Member] Valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Accumulated earnings Retained Earnings [Member] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Condensed Consolidated Statement of Operations Income Statement [Abstract] Total Derivative assets Derivative instruments Derivative Asset Available to borrow Debt Instrument, Unused Borrowing Capacity Amount, Under Covenants Debt Instrument, Unused Borrowing Capacity Amount, Under Covenants Telenet Revolving Facility Telenet Revolving Facility [Member] Telenet Revolving Facility [Member] Total subscription revenue Total Subscription Revenue [Member] Total Subscription Revenue Long-term Derivative Liability, Noncurrent Total investments Investments, Fair Value Disclosure Video Video [Member] Video Product and Service [Domain] Product and Service [Domain] Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Diluted Share Total Liberty Global shareholders Parent [Member] Net earnings (loss) Net earnings (loss) Net earnings (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Notional amount Notional amount due from counterparty Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Investments and receivables at fair value Investments And Related Notes Receivable, Fair Value Disclosure Investments And Related Notes Receivable, Fair Value Disclosure Total B2B revenue Business to Business [Member] Business to Business [Member] Pension-related adjustments and other Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Warner Bros. Discovery, Inc. Warner Bros. Discovery, Inc. [Member] Warner Bros. Discovery, Inc. City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Total finance lease expense Finance Lease, Cost Finance Lease, Cost Basis Swaps Basis Swap [Member] Net cash used by investing activities of discontinued operations Cash Provided by (Used in) Investing Activity, Discontinued Operation Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Long-lived Assets Long Lived Assets Disclosure [Text Block] The entire disclosure for long-lived assets. Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Realized net gains (losses) Debt Securities, Realized Gain (Loss) Subscription revenue Business to Business Subscription [Member] Business to Business Subscription [Member] SG&A expense Selling, General and Administrative Expenses [Member] Total lease expense Lease, Cost Goodwill (note 8) Goodwill beginning balance Goodwill ending balance Goodwill Equity-related derivative instruments Equity-related derivative instruments Equity Contract [Member] Schedule of Lease Expense and Cash Outflows from Operating and Finance Leases Lease, Cost [Table Text Block] Held by former Liberty Global employees Former Employees [Member] Former Employees [Member] Schedule of Investments by Accounting Method Schedule of Investments by Accounting Method [Table Text Block] Schedule of Investments by Accounting Method [Table Text Block] Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Net cash used by financing activities of discontinued operations Cash Provided by (Used in) Financing Activity, Discontinued Operation Vodafone Collar Loan Vodafone Collar Loan [Member] Vodafone Collar Loan Foreign exchange (loss) gains Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Amount Effective Income Tax Rate Reconciliation, Foreign Currency Translation, Amount Capital-related vendor financing additions, before VAT Proceeds From Capital Related Vendor Financing Additions, Before Value Added Tax Proceeds From Capital Related Vendor Financing Additions, Before Value Added Tax Amortized cost basis Debt Securities, Available-for-Sale, Amortized Cost Other Performance Measure, Amount Other Performance Measure, Amount Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Current portion of debt and finance lease obligations (notes 9 and 10) Debt, Current Income tax examination, liability (refund) adjustment from settlement with taxing authority Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority Related Party [Domain] Related and Nonrelated Parties [Domain] VMO2 JV VMEO2 JV [Member] VMEO2 JV Assets acquired under capital-related vendor financing arrangements Assets Acquired Under Capital-Related Vendor Financing Arrangements Assets Acquired Under Capital-Related Vendor Financing Arrangements Total Proceeds (Repayments) From Derivatives, Continuing Operations Proceeds (Repayments) From Derivatives, Continuing Operations Derivative Instrument [Axis] Derivative Instrument [Axis] Vodafone - subject to re-use rights Vodafone Vodafone [Member] Vodafone Leases Lessee, Finance Leases [Text Block] Other current assets (notes 3 and 5) Other current assets Other Assets, Current Investments [Abstract] Investments [Abstract] Entity [Domain] Entity [Domain] Net cash provided (used) by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Revenue, remaining performance obligation, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Non-deductible net losses from investments, percent Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Percent Long-term Derivative Asset, Noncurrent Total Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Operating leases Operating Lease, Right-of-Use Asset Effective tax rate Effective Income Tax Rate Reconciliation, Percent Operating lease expense Operating Lease, Cost Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Plan Name [Domain] Plan Name [Domain] Conversion ratio Disposal Group, Including Discontinued Operations, Conversion Ratio Disposal Group, Including Discontinued Operations, Conversion Ratio Cash and cash equivalents and restricted cash included in current and long-term assets of discontinued operations Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations Equity [Abstract] Equity [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Schedule of Goodwill [Table] Goodwill [Table] 2028 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Debt Covenant, Scenario 1 Debt Covenant, Scenario 1 [Member] Debt Covenant, Scenario 1 Other debt securities Other Debt Obligations [Member] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Weighted Average Weighted Average [Member] Leases Lessee, Leases [Policy Text Block] Selling, general and administrative (SG&A) (notes 10 and 13) Selling, General and Administrative Expense Schedule of Lease Balances Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Capital expenditures, net Payments to Acquire Productive Assets Total capital expenditures, net Payments for Capital Improvements Vendor Financing Obligation [Roll Forward] Vendor Financing Obligation [Roll Forward] Vendor Financing Obligation Effective income tax rate reconciliation, foreign income tax rate differential, amount Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Finance lease obligations Finance leases Present value of lease payments Finance Lease, Liability Arrangement Duration Trading Arrangement Duration Segments [Axis] Segments [Axis] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other Other Share-Based Incentive Awards [Member] Other Share-Based Incentive Awards [Member] Other investing activities, net Payment for (Proceeds from) Other Investing Activity Thereafter Long-Term Debt, Maturity, after Year Five Share-based Compensation Share-Based Payment Arrangement [Text Block] Fixed-line telephony Fixed-line Telephony [Member] Fixed-line Telephony ASSETS Assets [Abstract] Telenet Revolving Facility I Telenet Revolving Facility I [Member] Telenet Revolving Facility I Credit Facility [Axis] Credit Facility [Axis] Other Other Contract [Member] Acquisitions and Dispositions [Abstract] Acquisitions and Dispositions [Abstract] Acquisitions and Dispositions [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Number of subsidiaries with the most outstanding debt Number Of Subsidiaries With The Most Outstanding Debt Number Of Subsidiaries With The Most Outstanding Debt Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Measurements Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] Losses on debt extinguishment, net Losses on debt extinguishment, net Gain (Loss) on Extinguishment of Debt Total residential revenue Residential [Member] Residential [Member] Credit Facility [Domain] Credit Facility [Domain] Liberty Global shareholders: Equity, Attributable to Parent [Abstract] Other Other Stock Plan [Member] Other Stock Plan Current Derivative Liability, Current Performance-based incentive awards Performance-Based Incentive Awards [Member] Performance-Based Incentive Awards [Member] Aggregate purchase price Treasury Stock, Value, Acquired, Cost Method Stated interest percentage Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Schedule of Revenue by Major Category Revenue from External Customers by Products and Services [Table Text Block] Long-term operating lease liabilities (note 10) Long-term portion Operating Lease, Liability, Noncurrent Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Government bonds Municipal Bonds [Member] Number of associations of municipalities Number Of Associations Of Municipalities Number Of Associations Of Municipalities Total assets Assets, Fair Value Disclosure Available to loan or distribute Financing Receivable, Available To Distribute Financing Receivable, Available To Distribute Percentage of legal and other third party, fees Percentage of Legal and Other Third Party, Fees Percentage of Legal and Other Third Party, Fees Schedule of Debt Schedule of Debt [Table Text Block] Non-deductible net losses from investments Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount Segments Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Related Party [Axis] Related and Nonrelated Parties [Axis] Net cash provided by operating activities of continuing operations Cash Provided by (Used in) Operating Activity, Continuing Operation Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] AtlasEdge JV AtlasEdge JV [Member] AtlasEdge JV Schedule of Intangible Assets Subject to Amortization, Net Schedule of Finite-Lived Intangible Assets [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Number of strategic platforms Number Of Strategic Platforms Number Of Strategic Platforms Net cash provided (used) by investing activities of continuing operations Cash Provided by (Used in) Investing Activity, Continuing Operation Other financing activities, net Proceeds from (Payment for) Other Financing Activity VMO2 JV And VodafoneZiggo JV VMO2 JV And VodafoneZiggo JV [Member] VMO2 JV And VodafoneZiggo JV Name Trading Arrangement, Individual Name Losses included in net earnings Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] Other Other Subsidiaries [Member] Relating to Other Subsidiaries not otherwise identified. Debt instrument, face amount Debt Instrument, Face Amount Telenet Revolving Credit Facility B Telenet Revolving Credit Facility B [Member] Telenet Revolving Credit Facility B Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Income tax expense Discontinued Operation, Tax Effect of Discontinued Operation Name Awards Close in Time to MNPI Disclosures, Individual Name Principal payments on operating-related vendor financing Principal payments on operating-related vendor financing Repayments Of Long Term Debt On Operating Financing From Vendors Repayments Of Long Term Debt On Operating Financing From Vendors Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Debt Covenant [Axis] Debt Covenant [Axis] Debt Covenant Held by Liberty Global employees: Employees [Member] Employees [Member] Share-based compensation (note 13) APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Schedule of Maturities of Financing Lease Liabilities Finance Lease, Liability, to be Paid, Maturity [Table Text Block] Country Region Country Region 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, Including Discontinued Operation [Abstract] Litigation Case [Axis] Litigation Case [Axis] Operating-related vendor financing additions Proceeds From Operating Related Vendor Financing Additions Proceeds From Operating Related Vendor Financing Additions Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Damages sought Loss Contingency, Damages Sought, Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Amortization of deferred financing costs and non-cash interest Amortization of Debt Issuance Costs and Discounts Total lease liabilities Lease, Liability Lease, Liability Total debt and finance lease obligations Long-Term Debt and Lease Obligation, Including Current Maturities All3Media Ltd. (All3Media) All3Media Group [Member] All3Media [Member] Other Sunrise Holding [Member] Sunrise Holding Vodafone Group Inc. Vodafone Group Inc. [Member] Vodafone Group Inc. All Executive Categories All Executive Categories [Member] Common stock Common Stock, Value, Issued Finance leases Finance Lease, Right-of-Use Asset, after Accumulated Amortization Short-term investments (measured at fair value on a recurring basis) (note 5) Short-term investments Short-Term Investments Fair Value, Assets and Liabilities (Net) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Title of Individual [Axis] Title and Position [Axis] Commitments and contingencies (notes 6, 9, 10, 11 and 15) Commitments and Contingencies B2B Services B2B Services [Member] B2B Services [Member] Business Combination [Axis] Business Combination [Axis] Comprehensive earnings (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Non-controlling interests Noncontrolling Interest [Member] Telenet Telenet Telenet [Member] Telenet [Member] Ownership percentage Equity Method Investment, Ownership Percentage Accounting Changes and Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Aggregate Variable and Fixed Rate Indebtedness Aggregate Variable and Fixed Rate Indebtedness [Member] Aggregate Variable And Fixed Rate Indebtedness [Member] ROU assets: Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Co-venturer ownership percentage Equity Method Investment, Co-Venturer Ownership Percentage Equity Method Investment, Co-Venturer Ownership Percentage Diluted earnings (loss) attributable to Liberty Global shareholders per share (note 14): Earnings Per Share, Diluted [Abstract] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Derivative Contract [Domain] Derivative Contract [Domain] SMAs SMAs [Member] SMAs Foreign currency translation adjustments and other, net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] VMO2 JV VMO2 JV VMO2 JV [Member] VMO2 JV Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Programming costs Programming and Copyright Costs Programming and Copyright Costs Continuing operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect, Continuing Operation 2029 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Net cash provided by operating activities of discontinued operations Cash Provided by (Used in) Operating Activity, Discontinued Operation Disposal Group Classification [Axis] Disposal Group Classification [Axis] Weighted average interest rate Debt, Weighted Average Interest Rate Cash and cash equivalents and restricted cash: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Net income from investments, percent Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Percent Foreign currency translation adjustments and other Goodwill, Foreign Currency Translation, Gain (Loss) Fixed Charges Fixed Charges [Member] Fixed Charges Notional amount due from counterparty Due From Counterparty [Member] Due From Counterparty [Member] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Schedule of Finite-Lived Intangible Assets by Major Class [Table] Intangible Asset, Finite-Lived [Table] Geographical [Axis] Geographical [Axis] Liability: Derivative Liability [Abstract] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Revenue (in millions) Business Combination, Pro Forma Information, Pro Forma Revenue Foreign currency transaction gains (losses), net Foreign currency transaction losses (gains), net Gain (Loss), Foreign Currency Transaction, before Tax Other comprehensive earnings from discontinued operations (note 4) Other Comprehensive Income (Loss), Net of Tax, Discontinued Operations Other Comprehensive Income (Loss), Net of Tax, Discontinued Operations Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Net cash paid for taxes: Income Taxes Paid, Net [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Abstract] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five Non-operating income (expense) Nonoperating Income (Expense) Percentage of ownership interest Subsidiary, Ownership Percentage, Parent Other Other Debt [Member] Other Debt [Member] 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 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 Thereafter Finance Lease, Liability, to be Paid, after Year Five Award Timing Disclosures [Line Items] McNair Topco McNair Topco [Member] McNair Topco EdgeConneX, Inc. (EdgeConneX) EdgeConneX EdgeConneX Inc. [Member] EdgeConneX Inc. Equity Equity [Text Block] VM Ireland Credit Facility VM Ireland Credit Facility [Member] VM Ireland Credit Facility Other operating expense Other Operating Income (Expense) [Member] Adjusted EBITDA Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization JV Reportable Segments JV Reportable Segments [Member] JV Reportable Segments Net earnings (loss) attributable to Liberty Global shareholders Net Income (Loss) Net Income (Loss) Attributable to Parent Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Other accrued and current liabilities (notes 6 and 10) Other Accrued Liabilities, Current Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Vendor financing Vendor Financing [Member] Vendor Financing [Member] Repurchases of Liberty Global common shares Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Customer relationships Customer Relationships [Member] AE Group Sàrl (AtlasEdge JV) AE Group Sàrl (AtlasEdge JV) [Member] AE Group Sàrl (AtlasEdge JV) Operating income (loss) Operating Income (Loss) Line of Credit Line of Credit [Member] Accumulated earnings Retained Earnings (Accumulated Deficit) Cross-currency and interest rate derivative contracts Cross-currency and interest rate derivative contracts Cross Currency Interest Rate Contract [Member] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Programming commitments Programming Commitments [Member] Programming Commitments [Member] Principal Transaction Revenue [Table] Principal Transaction Revenue [Table] Class of Stock [Axis] Class of Stock [Axis] Continuing operations Interest Paid, Continuing Operations Interest Paid, Continuing Operations 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] Other income, net Other income, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Total Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Adjustments to reconcile earnings (loss) from continuing operations to net cash provided by operating activities of continuing operations: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Other comprehensive earnings (loss) from continuing operations Other Comprehensive Income (Loss), Net of Tax, Continuing Operations Other Comprehensive Income (Loss), Net of Tax, Continuing Operations Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Deferred revenue Contract with Customer, Liability Long-term portion Finance Lease, Liability, Noncurrent Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Accrued interest Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Treasury shares, at cost Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Weighted average discount rate, for operating leases Operating Lease, Weighted Average Discount Rate, Percent Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Weighted average common shares outstanding (basic EPS computation) (in shares) Weighted Average Number of Shares Outstanding, Basic UTB that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Foreign currency and other Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Options exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Related Party Transaction [Domain] Related Party Transaction [Domain] Segment Reporting [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Non-operating income (expense): Nonoperating Income (Expense) [Abstract] Operating costs and expenses (exclusive of depreciation and amortization, shown separately below): Costs and Expenses [Abstract] Diluted earnings from continuing operations attributable to Liberty Global shareholders per share (in dollars per share) Business Acquisition, Pro Forma Income (Loss) From Continuing Operations, Net Of Tax, Diluted Business Acquisition, Pro Forma Income (Loss) From Continuing Operations, Net Of Tax, Diluted Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Aviatrix Systems, Inc. (Aviatrix) Aviatrix Aviatrix Systems, Inc. [Member] Aviatrix Systems, Inc. Common stock, nominal value (in dollars per share) Common Stock, Par or Stated Value Per Share Related party note receivable Receivable with Imputed Interest, Face Amount Operating cash outflows from finance leases (interest component) Finance Lease, Interest Payment on Liability Net cash received (paid) related to derivative instruments Financing activities Payments for (Proceeds from) Derivative Instrument, Financing Activities Insider Trading Arrangements [Line Items] Related party note receivable rate Receivable with Imputed Interest, Effective Yield (Interest Rate) Subscription revenue Mobile Subscription [Member] Mobile Subscription [Member] VM Ireland Ireland [Member] Ireland Total liabilities Liabilities Percentage of net present value, cost savings Percentage of Net Present Value, Cost Savings Percentage of Net Present Value, Cost Savings 2030 Finance Lease, Liability, to be Paid, Year Five Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Gain (loss) on change in credit risk valuation included in realized and unrealized gains (losses) on derivative instruments, net Gain Loss On Credit Risk Derivatives Net Recognized In Earnings Gain Loss On Credit Risk Derivatives Net Recognized In Earnings Business combination, acquired Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent Consolidation Items [Axis] Consolidation Items [Axis] Counterparty Name [Axis] Counterparty Name [Axis] Discontinued operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect, Discontinued Operation Fair value SMAs Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate debt securities Corporate Debt Securities [Member]