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Liberty Global 2014 Incentive Plan Liberty Global Incentive Plan [Member] Liberty Global Incentive Plan [Member] Operating costs and expenses: Operating Costs and Expenses [Abstract] Term of contract Lessee, Operating Lease, Term of Contract Counterparty Name [Axis] Counterparty Name [Axis] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] RUSs RUS [Member] RUS 2018 PSUs 2018 PSUs [Member] 2018 PSUs [Member] Deferred financing costs, discounts and premiums, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Discontinued operations (note 6): Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent [Abstract] Intangible assets subject to amortization, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Foreign currency translation Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation Cash Flow Statement Cash Flow Statement, Policy [Policy Text Block] Cash Flow Statement, Policy Assets acquired under finance leases Lease Obligation Incurred Cash paid for acquisition Cash Paid For Asset Acquisition Cash Paid For Asset Acquisition Operating cash outflows from operating leases Operating Lease, Payments Debt (excluding vendor financing) Repayments of Long-Term Debt Options Share-Based Payment Arrangement, Option [Member] Long-term Debt Long-Term Debt [Member] Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Aggregate allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Total Other Tax Expense (Benefit), Continuing Operations Other Tax Expense (Benefit), Continuing Operations Awards other than Performance-Based Awards Awards other than Performance-Based Awards [Member] Awards other than Performance-Based Awards [Member] Collar transaction, loan amount Asset Acquisition, Consideration Transferred, Liabilities Incurred Asset Acquisition, Consideration Transferred, Liabilities Incurred Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Accrued income taxes Accrued Income Taxes, Current Maximum Maximum [Member] SCHEDULE I (Parent Company Information) Condensed Financial Information of Parent Company Only Disclosure [Text Block] Weighted average remaining contractual term Weighted average remaining term [Abstract] Weighted average remaining term Value added tax, vendor financing arrangement Value Added Tax, Vendor Financing Arrangement Value Added Tax, Vendor Financing Arrangement Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] CANAL+ Polska S.A. (CANAL+ Polska) CANAL+ Polska S.A. [Member] CANAL+ Polska S.A. Repurchases and cancellations of Liberty Global ordinary shares (note 14) Stock Repurchased and Retired During Period, Value Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Non-cash borrowings and repayments of debt Non-Cash Borrowings and Repayments of Debt Non-Cash Borrowings and Repayments of Debt Balance at January 1, including amounts classified as held for sale Total vendor financing obligations Long Term Debt And Assets Held For Sale Long Term Debt And Assets Held For Sale Cross-Currency Swap 5 Cross-Currency Swap 5 [Member] Cross-Currency Swap 5 [Member] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Business Acquisition [Line Items] Business Acquisition [Line Items] Equity Stockholders' Equity Note Disclosure [Text Block] May 15, 2021 May 15, 2021 [Member] May 15, 2021 [Member] Earnings (loss) from continuing operations Earnings (loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Percentage of minority interest revenues and expenses included in net earnings attributable to noncontrolling interest Percentage Of Minority Interest Revenues And Expenses From Consolidated Statements Of Operations Included In Net Earnings Attributable To Noncontrolling Interest Percentage Of Minority Interest Revenues And Expenses From Consolidated Statements Of Operations Included In Net Earnings Attributable To Noncontrolling Interest Network and connectivity commitments Network and Connectivity Commitments [Member] Network and Connectivity Commitments [Member] 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 Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Accumulated unrealized losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax Income tax benefit related to share-based compensation of our continuing operations (in millions) Share-Based Payment Arrangement, Expense, Tax Benefit Earnings before income taxes Earnings (loss) from continuing operations before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Telenet Revolving Credit Facility I Telenet Revolving Credit Facility I [Member] Telenet Revolving Credit Facility I [Member] Equity-related derivative instruments Total equity-related derivative instruments Equity Contract [Member] Discontinued operations Income Taxes Paid, Discontinued Operations Income Taxes Paid, Discontinued Operations Title of 12(b) Security Title of 12(b) Security Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Other long-term liabilities Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] April 1, 2021 April 1, 2021 [Member] April 1, 2021 [Member] Short-term investments (measured at fair value on a recurring basis) (note 7) Short-term investments Short-Term Investments Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Foreign currency translation adjustments and other, net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Subsequent Event [Line Items] Subsequent Event [Line Items] Repayments of lines of credit Repayments of Lines of Credit Long-term Derivative Asset, Noncurrent Capital-related vendor financing additions Proceeds From Capital Related Vendor Financing Additions Proceeds From Capital Related Vendor Financing Additions Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Segment Reporting Segment Reporting Disclosure [Text Block] SG&A expenses Selling, General and Administrative Expenses [Member] Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Entity Address, Country Entity Address, Country Net deferred tax liability Deferred Tax Liabilities, Net Total Unrecorded Unconditional Purchase Obligation LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Options expired, cancelled or forfeited (in dollars per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Notional amount due to counterparty Due To Counterparty [Member] Due To Counterparty [Member] Accounts payable Accounts Payable, Current Term to distribute all unrestricted cash Equity Method Investment, Term to Distribute All Unrestricted Cash Equity Method Investment, Term to Distribute All Unrestricted Cash Income Tax Authority [Axis] Income Tax Authority [Axis] VodafoneZiggo JV Loan VodafoneZiggo JV Loan [Member] VodafoneZiggo JV Loan [Member] Assessed period Share-Based Compensation Arrangement By Share-Based Payment Award, Assessed Period Share-Based Compensation Arrangement By Share-Based Payment Award, Assessed Period 5.5% UPC Holdings Senior Notes 5.5% UPC Holdings Senior Notes [Member] 5.5% UPC Holdings Senior Notes Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Basic Share Liberty Global 2014 Nonemployee Director Incentive Plan Liberty Global Director Incentive Plan [Member] Liberty Global Director Incentive Plan [Member] Accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization TiBiT Communications, Inc. (TiBiT) TiBiT Communications, Inc. [Member] TiBiT Communications, Inc. [Member] Weighted average ordinary shares outstanding (basic EPS computation) (in shares) Weighted Average Number of Shares Outstanding, Basic Weighted average grant-date fair value per share Weighted average grant date fair value per share [Abstract] Weighted average grant-date fair value per share Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Cross-Currency Swap 4 Cross-Currency Swap 4 [Member] Cross-Currency Swap 4 [Member] Investing activities Payments for (Proceeds from) Derivative Instrument, Investing Activities Total residential mobile revenue Mobile Residential [Member] Mobile Residential [Member] Ownership percentage Equity Method Investment, Ownership Percentage Released from restrictions (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Released from Restrictions in Period The number of equity-based payment instruments, excluding stock (or unit) options, that were released from restrictions during the reporting period. Gain on Telenet Tower Sale (note 6) Gain on Telenet Tower Sale Gain (Loss) on Disposition of Assets Interest expense — related-party Interest Expense, Related Party Notional amount Foreign currency forward and option contracts Derivative, Notional Amount Restricted cash included in other current assets Restricted Cash, Current Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Schedule of Debt Schedule of Debt [Table Text Block] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Current portion of debt and finance lease obligations (notes 11 and 12) Debt, Current Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Leases Lessee, Leases [Policy Text Block] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Significant unobservable inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Long-term assets Assets, Noncurrent Payments of third party costs Payments Of Third Party Costs Payments Of Third Party Costs Long-term Debt Securities, Available-for-Sale, Noncurrent Depreciation expense Depreciation, Nonproduction Share-based Compensation Share-Based Payment Arrangement [Text Block] Current portion of notes payable — related-party Notes Payable, Related Parties, Current Eligible participants’ initial contribution percent Share-based Compensation Arrangement by Share-based Payment For Eligible Participants’ Initial Contribution Share-based Compensation Arrangement by Share-based Payment For Eligible Participants’ Initial Contribution Non-deductible or non-taxable interest and other expenses Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Current notes receivable — related-party Notes Receivable, Related Parties, Current UPC Facility AX UPC Facility AX [Member] UPC Facility AX Mandatory redemption price expressed as percentage of principal amount on senior notes in event that certain assets sold or specific control changed Mandatory Redemption Price Expressed as Percentage of Principal Amount on Senior Notes in Event that Certain Assets Sold or Specific Control Changed Mandatory redemption price expressed as percentage of principal amount on senior notes in event that certain assets sold or specific control changed Non-controlling interests Noncontrolling Interest [Member] Cash received in connection with the Atlas Edge JV Transactions Proceeds From Join Venture Proceeds From Join Venture Schedule of Current And Noncurrent Deferred Tax Assets And Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Goodwill [Roll Forward] Goodwill [Roll Forward] Related Party [Axis] Related Party [Axis] Extinguishment of debt Extinguishment of Debt, Amount Incremental shares attributable to the assumed exercise of outstanding options and SARs and the release of RSUs, RSAs and PSUs upon vesting (treasury stock method) (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Diluted earnings (loss) attributable to Liberty Global shareholders per share (note 3): Earnings Per Share, Diluted [Abstract] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Disposal Group Name [Domain] Disposal Group Name [Domain] Cash received (paid) in connection with acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Equity-related derivative instruments Equity-Related Derivative Instruments [Member] Equity-Related Derivative Instruments [Member] Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Realized and unrealized gains (losses) 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 Current Fiscal Year End Date Current Fiscal Year End Date Total ROU assets Lease Asset Lease Asset Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Goodwill Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent Options impact of dispositions ( in dollar per shares) Share-based Compensation Arrangements by Share-based Payment Award, Options, Impact of Dispositions in Period, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Impact of Dispositions in Period, Weighted Average Exercise Price U.K. JV Transaction U.K. JV Transaction [Member] U.K. JV Transaction Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Total assets Disposal Group, Including Discontinued Operation, Assets Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [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] Share-based compensation (note 15) APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Telefónica Telefónica [Member] Telefónica 2026 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Impact of dispositions (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Impact of Dispositions in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Impact of Dispositions in Period Derivative instruments Deferred Tax Liabilities, Derivatives Current liabilities Current liabilities Liabilities, Current Loss before income taxes and equity in earnings (loss) of consolidated subsidiaries, net Income Loss From Continuing Operations Before Income Taxes And Equity In Losses Of Consolidated Subsidiaries Net Sum of operating profit and nonoperating income (expense) before income taxes and equity in losses of consolidated subsidiaries, net. Percent of share based compensation expense Equity Method Investment, Percentage Of Share Based Compensation Expense Equity Method Investment, Percentage Of Share Based Compensation Expense Gain on U.K. JV Transaction Other Nonoperating Gains (Losses) Cross-Currency Swap 3 Cross-Currency Swap 3 [Member] Cross-Currency Swap 3 [Member] Eltrona Interdiffusion S.A. (Eltrona) Eltrona Interdiffusion S.A. [Member] Eltrona Interdiffusion S.A. [Member] Number of votes allowed per class of stock (in votes) Number of Votes Allowed Per Class of Stock Number of Votes Allowed Per Class of Stock Class A Liberty Global Group [Member] Liberty Global Group [Member] Dispositions Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Unrecognized tax benefits - favorable impact on effective income tax rate if ultimately recognized, net of valuation allowances Unrecognized Tax Benefits that Would Impact Effective Tax Rate Expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Non-operating income (expense): Nonoperating Income (Expense) [Abstract] Term of transitional services Disposal Group, Term of Transitional Services Disposal Group, Term of Transitional Services Enacted tax law and rate changes Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Lacework, Inc. (Lacework) Lacework Lacework Inc. (Lacework) [Member] Lacework Inc. (Lacework) Income Tax Authority [Domain] Income Tax Authority [Domain] Other financing activities, net Proceeds from (Payments for) Other Financing Activities Number of ordinary share rights for each performance share (in shares) Number of Ordinary Shares Rights for Each Performance Share Number of Ordinary Shares Rights for Each Performance Share Change in valuation allowances Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Weighted average remaining lease term for finance leases Finance Lease, Weighted Average Remaining Lease Term Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Related party note receivable rate Receivable with Imputed Interest, Effective Yield (Interest Rate) Telenet Tower Lease Agreement Telenet Tower Lease Agreement [Member] Telenet Tower Lease Agreement Credit Facility [Axis] Credit Facility [Axis] Other Other Contract [Member] Long-term debt and finance lease obligations (notes 11 and 12) Long-term debt and finance lease obligations Long-term debt and finance lease obligations Long-Term Debt and Lease Obligation Cash and cash equivalents and restricted cash: Cash and cash equivalents and restricted cash: Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract] Aggregate expense for matching contributions under various defined contribution plans Defined Contribution Plan, Employer Discretionary Contribution Amount Equity [Abstract] Equity [Abstract] Subsequent Event [Table] Subsequent Event [Table] Entity Tax Identification Number Entity Tax Identification Number Share authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Belgium Administration of the Treasury, Belgium [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Schedule of Investments [Table] Schedule of Investments [Table] Schedule of Long-Lived Assets by Geographic Segments Long-Lived Assets by Geographic Areas [Table Text Block] Cash received in connection with the Atlas Edge JV Transactions Proceeds From Joint Venture Proceeds From Joint Venture Debt and interest Deferred Tax Liabilities, Debt And Interest Deferred Tax Liabilities, Debt And Interest 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 VodafoneZiggo JV Receivable I VodafoneZiggo JV Receivable I [Member] VodafoneZiggo JV Receivable I VodafoneZiggo JV VodafoneZiggo JV [Member] VodafoneZiggo JV [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] Basis of Presentation [Line Items] Basis of Presentation [Line Items] [Line Items] for Basis of Presentation [Table] Schedule of Income Tax Benefit (Expense) Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Total Net increase (decrease) Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Intangible assets subject to amortization, net (note 10) Intangible assets subject to amortization, net Other Intangible Assets, Net Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Consideration transferred Business Combination, Consideration Transferred Measurement Input Type [Axis] Measurement Input Type [Axis] Entity [Domain] Entity [Domain] City Area Code City Area Code ASSETS Assets [Abstract] Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] UPC Facility AY UPC Facility AY [Member] UPC Facility AY [Member] Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Other comprehensive earnings attributable to noncontrolling interests, net Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Debt (excluding vendor financing) Repayments of Long-Term Loans from Vendors Earnings or Loss per Share Earnings Per Share, Policy [Policy Text Block] 2023 Long-Term Debt, Maturity, Year One Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Income Taxes [Line Items] Income Taxes [Line Items] [Line Items] for Income Taxes [Table] Weighted average grant-date fair value per share of awards granted, options (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Other long-term liabilities (notes 4, 8, 13 and 16) Other long-term liabilities Other long-term liabilities Other Liabilities, Noncurrent Share of results of affiliates, net (note 7) Share of results of affiliates, net Share of results of affiliates, net Foreign currency transactions losses (gains), net Share of results of affiliates, net Income (Loss) from Equity Method Investments Continuing Operations Total - continuing operations Continuing Operations [Member] U.K. U.K. [Member] U.K. Weighted Average Weighted Average [Member] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Interkabel Acquisition Interkabel Acquisition [Member] Interkabel Acquisition [Member] Projected benefit obligation Defined Benefit Plan, Benefit Obligation Thereafter Finance Lease, Liability, to be Paid, after Year Five Borrowings of related-party debt Proceeds from Related Party Debt Addition to ROU assets associated with operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability VMO2 JV VMED O2 JV [Member] VMED O2 JV Cash paid for investments Payments to Acquire Interest in Subsidiaries and Affiliates Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Term of leases Total payments Lessee, Operating Lease, Liability, to be Paid Net earnings (loss) Net earnings (loss) Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Entity Address, Postal Zip Code Entity Address, Postal Zip Code Long-term notes payable — related-party Notes Payable, Related Parties, Noncurrent Realized net gains (losses) Debt Securities, Realized Gain (Loss) Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] 2024 Long-Term Debt, Maturity, Year Two 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 Total investments Investments measured at fair value Investments, Fair Value Disclosure Revenue from transitional services Revenue From Transitional Services Revenue From Transitional Services Schedule of Other-than-Options Activity Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] Related-party fees and allocations Related Party Transaction, Expenses from Transactions with Related Party Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Current portion of debt and finance lease obligations Long-Term Debt and Lease Obligation, Current Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Realized and unrealized gains (losses) due to changes in fair values of certain investments, net (notes 7 and 9) Realized and unrealized losses (gains) due to changes in fair values of certain investments, net 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, Net Realized And Unrealized Gains (Losses) Due To Changes In Fair Values of Certain Investments, Net Total debt maturities Long-term Debt, Gross Contractual Maturities Long-term Debt, Gross Contractual Maturities Property and equipment, net Deferred Tax Liabilities, Property, Plant and Equipment Deductions or write-offs SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Changes in operating assets and liabilities: Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] Purchase commitments Purchase Commitments [Member] Purchase Commitments [Member] Skillz Inc. (Skillz) Skillz [Member] Skillz Total debt Long-term Debt Contractual Maturities Long-term Debt Contractual Maturities Number of shares purchased (in shares) Asset Acquisition, Number Of Shares Purchased Asset Acquisition, Number Of Shares Purchased Adjusted EBITDA Income (loss) from continuing operations before income taxes Sum of operating profit and nonoperating income (expense) before income taxes. Other investing activities, net Payments for (Proceeds from) Other Investing Activities Statistical Measurement [Domain] Statistical Measurement [Domain] Discontinued operations Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Lapse of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations JV Services JV Services [Member] JV Services [Member] Streamz B.V. (Streamz) Streamz B.V. [Member] Streamz B.V. [Member] Long-lived assets Long-lived assets Long-Lived Assets Net periodic pension cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Domestic tax authority Domestic Tax Authority [Member] Total 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 Property and equipment, net Total property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization October 1, 2021 October 1, 2021 [Member] October 1, 2021 [Member] Total cost for stock purchased pursuant to repurchase programs Treasury Stock, Value, Acquired, Cost Method Net earnings (loss) attributable to Liberty Global shareholders Net earnings (loss) Net Income (Loss) Attributable to Parent Leases Lessee, Finance Leases [Text Block] Other Other Intangible Assets [Member] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Schedule of Maturities of Debt and Capital Lease Obligations Schedule of Maturities of Long-Term Debt [Table Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Long-term debt and finance lease obligations Disposal Group, Including Discontinued Operation, Debt and Capital Lease Obligations, Noncurrent Disposal Group, Including Discontinued Operation, Debt and Capital Lease Obligations, Noncurrent May 15, 2020 May 15, 2020 [Member] May 15, 2020 [Member] Tax Period [Domain] Tax Period [Domain] Other comprehensive earnings attributable to noncontrolling interests, Tax benefit (expense) Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest Receivables and other operating assets Increase (Decrease) in Accounts Receivable and Other Operating Assets Redemption price Debt Instrument, Redemption Price, Percentage Change in valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Total assets Assets, Fair Value Disclosure Other revenue Other Category [Member] Other Category [Member] Other operating expenses Other Operating Income (Expense) [Member] Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Leases Lessee, Operating Leases [Text Block] Treasury shares, at cost Treasury Stock, Common, Value Incremental share based compensation expense Share-Based Payment Arrangement, Plan Modification, Incremental Cost Plan Name [Axis] Plan Name [Axis] Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Televisa Univision Televisa Univision Holdings Inc [Member] Televisa Univision Holdings Inc Total debt and finance lease obligations Long-Term Debt and Lease Obligation, Including Current Maturities Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Diluted Share Derivative Instrument [Axis] Derivative Instrument [Axis] Long term incentive plan, percentage of payout liability owed by each joint venture Long-Term Incentive Plan, Percentage Of Payout Liability Owed By Each Joint Venture Long-Term Incentive Plan, Percentage Of Payout Liability Owed By Each Joint Venture Goodwill [Line Items] Goodwill [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Quoted prices in active markets for identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Schedule of Weighted Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Mobile Services Mobile Services [Member] Mobile Services [Member] 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 New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Total Derivative instruments: Derivative Asset Schedule of Revenue and Operating Cash Flow by Segment Schedule Of Revenue and Operating Cash Flow Segment Reporting Information By Segment [Table Text Block] Segment Revenue, & OCF year over year comparison. Revenue Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Schedule of Debt Securities Debt Securities, Available-for-Sale [Table Text Block] Related Party Transaction [Domain] Related Party Transaction [Domain] UPC Facility AQ UPC Facility AQ [Member] UPC Facility AQ Telenet Overdraft Facility Telenet Overdraft Facility [Member] Telenet Overdraft Facility [Member] Liberty Global Liberty Global [Member] Liberty Global 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 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] Options And SARs Options And SARs [Member] Options And SARs Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] UPC Poland 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Derivative [Table] Derivative [Table] Shares reserved for future issuance (in shares) Options outstanding at beginning of period (in shares) Options outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Pension-related adjustments and other Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax B2B Services B2B Services [Member] B2B Services [Member] Adjustments due to changes in subsidiaries’ equity and other, net Stockholders' Equity, Other 2024 Finance Lease, Liability, to be Paid, Year Two Liabilities: Liabilities [Abstract] Continuing operations Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Entities [Table] Entities [Table] Schedule of Amortization Expense Related to Intangible Assets with Finite Lives Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Principal Transaction Revenue [Line Items] Principal Transaction Revenue [Line Items] 2023 Unrecorded Unconditional Purchase Obligation, to be Paid, Year One Title of Individual [Domain] Title of Individual [Domain] Dividends Dividends Ownership interest acquired Asset Acquisition, Ownership Interest Acquired Asset Acquisition, Ownership Interest Acquired Telenet Telenet [Member] Telenet [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Aggregate Variable and Fixed Rate Indebtedness Aggregate Variable and Fixed Rate Indebtedness [Member] Aggregate Variable And Fixed Rate Indebtedness [Member] Total carrying amount of debt Long-Term Debt Other income, net Other income, net Other Nonoperating Income (Expense) ROU assets: Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] 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 Schedule of Revenue by Major Category Revenue from External Customers by Products and Services [Table Text Block] Accumulated other comprehensive earnings, net of taxes Accumulated other comprehensive earnings, net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax Co-venturer ownership percentage Equity Method Investment, Co-Venturer Ownership Percentage Equity Method Investment, Co-Venturer Ownership Percentage Class A Common Class A [Member] The Netherlands Tax and Customs Administration, Netherlands [Member] Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Total current assets Current assets Assets, Current Total Income Taxes Paid, Net Revenue recognized Contract with Customer, Liability, Revenue Recognized Entity Small Business Entity Small Business Share repurchase program, minimum repurchase requirement, percentage Share Repurchase Program, Minimum Repurchase Requirement, Percentage Share Repurchase Program, Minimum Repurchase Requirement, Percentage Total Finite-Lived Intangible Assets, Net Thereafter Unrecorded Unconditional Purchase Obligation, to be Paid, after Year Five Weighted average life Debt Securities, Available-for-Sale, Term SMAs SMAs [Member] SMAs Dividend distributions by subsidiaries to noncontrolling interest owners (note 14) Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Other accrued and current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other Revenue, remaining performance obligation, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Total compensation expense not yet recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Investments Deferred Tax Assets, Investments VMO2 JV VMO2 JV [Member] VMO2 JV SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Number of awards Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Programming and copyright costs Programming and Copyright Costs Programming and Copyright Costs Current operating lease liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Operating Lease Liability Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Operating Lease Liability Options outstanding at end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Distributions and repayments from (investments in and advances to) consolidated subsidiaries, net Distributions And Repayments From Investments In And Advances To Subsidiaries And Affiliates Net Distributions and repayments from (investments in and advances to) subsidiaries and affiliates net. RSAs RSAs [Member] RSAs [Member] Cash received from sale of investments Proceeds from Sale, Maturity and Collection of Investments Consolidated Entities [Axis] Consolidated Entities [Axis] Total Federal Income Tax Expense (Benefit), Continuing Operations Notional amount due from counterparty Due From Counterparty [Member] Due From Counterparty [Member] Dividends received Proceeds from Equity Method Investment, Distribution Operating costs and expenses Costs and Expenses Net cash used by financing activities of discontinued operations Cash Provided by (Used in) Financing Activities, Discontinued Operations Options granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Class of Stock [Line Items] Class of Stock [Line Items] Operating lease Operating leases Present value of lease payments Operating Lease, Liability Balance at beginning of period Balance at end of period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Share-based Compensation Share-Based Payment Arrangement [Policy Text Block] Total payments Finance Lease, Liability, to be Paid Related party note receivable Receivable with Imputed Interest, Face Amount Investments, Debt and Equity Securities [Abstract] Schedule of Maturities of Finance Lease Liabilities Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] Interest income — related-party Interest Income, Related Party 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Realized and unrealized gains (losses) on derivative instruments, net (note 8) Realized and unrealized losses (gains) on derivative instruments, net Realized and unrealized losses (gains) on derivative instruments, net Derivative, Gain (Loss) on Derivative, Net Foreign currency translation adjustments Valuation Allowances And Reserves Foreign Currency Translation Adjustments Valuation Allowances And Reserves Foreign Currency Translation Adjustments Options granted (in dollars per shares) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Amortized cost basis Debt Securities, Available-for-Sale, Amortized Cost Other comprehensive earnings (loss) from discontinued operations (note 6) Other Comprehensive Income (Loss), Net of Tax, Discontinued Operations Other Comprehensive Income (Loss), Net of Tax, Discontinued Operations Cumulative temporary differences Cumulative Temporary Differences Not Assigned Deferred Tax Liabilities Cumulative Temporary Differences Not Assigned Deferred Tax Liabilities Deferred tax assets: Deferred Tax Assets, Net [Abstract] 2026 Long-Term Debt, Maturity, Year Four Auditor Location Auditor Location Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Write off deferred financing costs Write off of Deferred Debt Issuance Cost Entity Filer Category Entity Filer Category Equity (note 14): Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Noncontrolling interests AOCI Attributable to Noncontrolling Interest [Member] Tax Year 2018 Tax Year 2018 [Member] Current Current Federal Tax Expense (Benefit) Net earnings Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Other Other Debt [Member] Other Debt [Member] Aggregate purchase price Asset Acquisition, Consideration Transferred Expected percentage of dividends retained Expected Percentage Of Dividends Retained Expected Percentage Of Dividends Retained Allocated share-based compensation expense Share-Based Payment Arrangement, Expense Lease liabilities Deferred Tax Assets, Lease Liabilities Deferred Tax Assets, Lease Liabilities Basis of Presentation [Table] Basis of Presentation [Table] Basis of Presentation [Table] Commitments and contingencies (notes 8, 11, 12, 13, 16 and 18) Commitments and contingencies Commitments and Contingencies Security Exchange Name Security Exchange Name Awards outstanding (in EUR/USD per share) Options outstanding at beginning of period (in dollars per shares) Options outstanding at end of period (in dollars per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Allowance for doubtful accounts — Loans to affiliates SEC Schedule, 12-09, Allowance, Loss on Finance Receivable [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Contractual maturity: Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling Maturity, Fair Value [Abstract] Net assets Total fair value of the net assets of the VMO2 JV Net Assets Debt Instrument [Roll Forward] Debt Instrument [Roll Forward] Debt Instrument Current assets of discontinued operations (note 6) Disposal Group, Including Discontinued Operation, Assets, Current Long-term operating lease liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Operating Lease Liability Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Operating Lease Liability Other long-term liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Revenue Revenue from Contract with Customer, Excluding Assessed Tax Operating income Disposal Group, Including Discontinued Operation, Operating Income (Loss) Stock Options, SARs, RSAs and RSUs Stock Options, SARs, RSAs and RSUs [Member] Stock Options, SARs, RSAs and RSUs [Member] Service cost Defined Benefit Plan, Service Cost SARs Stock Appreciation Rights (SARs) [Member] Common reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Cover [Abstract] Cover [Abstract] EdgeConneX EdgeConneX Inc. [Member] EdgeConneX Inc. Entity Voluntary Filers Entity Voluntary Filers Goodwill, impairment loss Goodwill, Impairment Loss Depreciation and amortization (note 10) Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction VM Ireland Credit Facility VM Ireland Credit Facility [Member] VM Ireland Credit Facility 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] Other assets, net Other Assets Other Other Equity Related Derivative Instrument [Member] Other Equity Related Derivative Instrument [Member] Adjusted EBITDA Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Weighted average discount rate for finance leases Finance Lease, Weighted Average Discount Rate, Percent Revenue Recognition and Related Costs Revenue from Contract with Customer [Text Block] Derivative instruments (note 8) Current Derivative Asset, Current Continuing operations Cash, Cash Equivalents, Restricted Cash, And Restricted Cash Equivalents, Period Increase (Decrease) Including Exchange Rate Effect, Continuing Operations Cash, Cash Equivalents, Restricted Cash, And Restricted Cash Equivalents, Period Increase (Decrease) Including Exchange Rate Effect, Continuing Operations Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Total liabilities and equity Total liabilities and equity Liabilities and Equity PSUs and PSARs PSU And PSARS [Member] PSU And PSARS [Member] Vendor financing Vendor Financing [Member] Vendor Financing [Member] Slovakia SLOVAKIA Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Stock repurchase, remaining authorized amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Deferred tax assets Deferred Tax Assets, Gross Schedule of Domestic and Foreign Components of Loss from Continuing Operations before Income Taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] PSARs and PSU PSARs and PSU [Member] PSARs and PSU 2022 VMO2 Long-term Incentive Plan 2022 VMO2 Long-term Incentive Plan [Member] 2022 VMO2 Long-term Incentive Plan Other, including intersegment eliminations Other Countries [Member] Other Countries Accrued interest and penalties on tax related items Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Less: present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Vesting [Axis] Vesting [Axis] Diluted earnings (loss) attributable to Liberty Global shareholders per share (in USD per share) Earnings Per Share, Diluted Programming commitments Programming Commitments [Member] Programming Commitments [Member] Aviatrix Systems, Inc. (Aviatrix) Aviatrix Systems, Inc. (Aviatrix) [Member] Aviatrix Systems, Inc. (Aviatrix) Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Percentage of ownership interest Noncontrolling Interest, Ownership Percentage by Parent Consolidation Items [Axis] Consolidation Items [Axis] Continuing operations Interest Paid, Continuing Operations Interest Paid, Continuing Operations Acquisitions SEC Schedule, 12-09, Valuation Allowances and Reserves, Business Acquired, Net Of Covid Adjustments SEC Schedule, 12-09, Valuation Allowances and Reserves, Business Acquired, Net Of Covid Adjustments 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Other current assets (notes 4 and 7) Other current assets Other Assets, Current Foreign currency translation Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation Balance at January 1 Balance at December 31 Unrecognized Tax Benefits Deferred tax assets, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Long-term investments at fair value Equity Securities, FV-NI and without Readily Determinable Fair Value Intangible assets Deferred Tax Liabilities, Intangible Assets 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 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 Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Corporate debt securities Corporate Debt Securities [Member] Due from related parties Due from Related Parties Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Discontinued operations Earnings from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, Address Line One Entity Address, Address Line One Other comprehensive income (loss), tax benefit (expense) Other Comprehensive Income (Loss), Tax Deferred revenue Contract with Customer, Liability Product and Service [Axis] Product and Service [Axis] Deferred tax liabilities: Deferred Tax Liabilities, Net [Abstract] Discontinued operations Interest Paid, Discontinued Operations Class of Stock [Domain] Class of Stock [Domain] Other assets, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Interest expense Interest expense Interest Expense 2022 Ventures Incentive Plan 2022 Ventures Incentive Plan [Member] 2022 Ventures Incentive Plan Senior and Senior Secured Notes Senior and Senior Secured Notes [Member] Senior and Senior Secured Notes [Member] Retirement Plan Type [Axis] Retirement Plan Type [Axis] UPC Austria UPC Austria [Member] UPC Austria [Member] Schedule of Vendor Financing Obligations Schedule of Long-Term Debt Instruments [Table Text Block] ROU assets Deferred Tax Liabilities, Leasing Arrangements 2025 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three Options impact of the sale of UPC Poland (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Impact Of Dispositions In Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Impact Of Dispositions In Period Foreign currency, acquisitions and other Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Debt Instrument, Increase (Decrease), Foreign currency, acquisitions and other, Net Net asset (liability) Defined Benefit Plan, Funded (Unfunded) Status of Plan Other than temporary impairment losses, investments Equity Method Investment, Other than Temporary Impairment Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Deferred tax liabilities Deferred Tax Liabilities, Gross Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Diluted earnings (loss) (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 Discontinued operations Cash, Cash Equivalents, Restricted Cash, And Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Disposal Group Including Discontinued Operations Cash, Cash Equivalents, Restricted Cash, And Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Disposal Group Including Discontinued Operations Other current liabilities — related-party Due to Other Related Parties, Current Interest accrued Increase (Decrease) in Accrued Interest Receivable, Net Property and equipment gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Operating cash outflows from finance leases (interest component) Finance Lease, Interest Payment on Liability Sunrise Acquisition Sunrise Acquisition [Member] Sunrise Acquisition SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Commercial paper Commercial Paper [Member] 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Five Allowance for doubtful accounts — Trade receivables SEC Schedule, 12-09, Allowance, Credit Loss [Member] UPC SPE Notes UPCB SPE Notes [Member] UPCB SPE Notes [Member] Other assets, net Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Tax Period [Axis] Tax Period [Axis] Other accrued and current liabilities (note 12) Other accrued and current liabilities Other Accrued Liabilities, Current Additional repurchase of shares (in shares) Stock Repurchase Program, Number of Shares Authorized to be Repurchased Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Other debt securities Other Debt Obligations [Member] Subscription revenue Mobile Subscription [Member] Mobile Subscription [Member] Ireland Ireland [Member] Ireland Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Percentage of amounts recovered Percentage of Net Present Value, Cost Savings Percentage of Net Present Value, Cost Savings Balance of net assets (liabilities) at January 1, 2022 Balance of net assets at December 31, 2022 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Computed “expected” tax benefit (expense) Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Details of end of year cash and cash equivalents and restricted cash: Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract] Less: present value discount Finance Lease, Liability, Undiscounted Excess Amount 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 Reduction related to the held for sale group Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions Disposal Group Classification [Domain] Disposal Group Classification [Domain] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Cash received in connection with the sale of UPC Poland Proceeds from Divestiture of Businesses, Net of Cash Divested Net earnings from continuing operations attributable to noncontrolling interests Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Long-term Derivative Liability, Noncurrent Accounting standards update Accounting Standards Update [Extensible Enumeration] Accounting Standards Update 2016-13 [Member]