Annual report pursuant to Section 13 and 15(d)

Investments in Affiliates Accounted for Using the Equity Method (Details)

v2.4.1.9
Investments in Affiliates Accounted for Using the Equity Method (Details) (USD $)
12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
May 31, 2014
May 31, 2013
Nov. 30, 2014
Investments in affiliates accounted for using the Equity Method          
Cash paid to acquire equity method investments $ 175,857,000us-gaap_PaymentsToAcquireEquityMethodInvestments $ 2,565,150,000us-gaap_PaymentsToAcquireEquityMethodInvestments      
Charter consolidated statement of operations          
Debt outstanding 372,000,000us-gaap_LongTermDebt        
Carrying value of equity method investment 2,498,804,000us-gaap_EquityMethodInvestments 2,402,024,000us-gaap_EquityMethodInvestments      
Share of equity investment income (losses) (127,573,000)us-gaap_IncomeLossFromEquityMethodInvestments (76,090,000)us-gaap_IncomeLossFromEquityMethodInvestments      
(Gain) loss on dilution of investment in affiliate (87,158,000)us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome (92,933,000)us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome      
Charter          
Investments in affiliates accounted for using the Equity Method          
Number of shares of common shares acquired     897,000lbrda_EquityMethodInvestmentNumberOfCommonSharesAcquired
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
   
Purchase price of equity method investments     124,500,000us-gaap_EquityMethodInvestmentAggregateCost
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
   
Noncash or Part Noncash Acquisition, Investments Acquired 130,600,000us-gaap_NoncashOrPartNoncashAcquisitionInvestmentsAcquired1
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Charter consolidated balance sheet          
Current assets 371,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
322,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Property and equipment, net 8,373,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationPropertyAndEquipmentNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
7,981,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationPropertyAndEquipmentNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Goodwill 1,168,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
1,177,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Intangible assets, net 7,111,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationIntangibleAssetsNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
7,398,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationIntangibleAssetsNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Other assets 7,527,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
417,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Total assets 24,550,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
17,295,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Current liabilities 1,635,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
1,467,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Deferred income taxes 1,674,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
1,431,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Long-term debt 21,023,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
14,181,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Other liabilities 72,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
65,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Equity 146,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
151,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Total liabilities and shareholders' equity 24,550,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
17,295,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Charter consolidated statement of operations          
Revenue 9,108,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
8,155,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Operating costs and expenses 5,973,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOperatingCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
5,345,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOperatingCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Depreciation and amortization 2,102,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
1,854,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Other operating expenses 62,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherOperatingExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
47,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherOperatingExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Total cost and expenses 8,137,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationTotalCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
7,246,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationTotalCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Operating income 971,000,000lbrda_Equitymethodinvestmentsummarizedfinancialinformationoperatingincome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
909,000,000lbrda_Equitymethodinvestmentsummarizedfinancialinformationoperatingincome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Interest expense, net (911,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationInterestExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(846,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationInterestExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Loss on extinguishment of debt   (123,000,000)lbrda_Equitymethodinvestmentsummarizedfinancialinformationlossonextinguishmentofdebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Other expense, net (7,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
11,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Income tax expense, net (236,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(120,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Net loss (183,000,000)us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(169,000,000)us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Carrying value of equity method investment 2,499,000,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Market value of equity method investment 4,805,000,000us-gaap_EquityMethodInvestmentQuotedMarketValue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Ownership percentage 26.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Share of equity investment income (losses) 127,600,000us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
76,100,000us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Amortization of debt and intangible assets 81,200,000us-gaap_AmortizationOfDeferredCharges
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
44,300,000us-gaap_AmortizationOfDeferredCharges
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
(Gain) loss on dilution of investment in affiliate 87,200,000us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
92,900,000us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Share of equity investment other comprehensive income (losses) 3,200,000lbrda_OtherComprehensiveIncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
3,700,000lbrda_OtherComprehensiveIncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Share of equity investment other comprehensive income (losses), pre-tax 5,200,000lbrda_OtherComprehensiveIncomeLossFromEquityMethodInvestmentsBeforeTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
6,000,000lbrda_OtherComprehensiveIncomeLossFromEquityMethodInvestmentsBeforeTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Excess basis allocation within memo accounts          
Property and equipment 433,900,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityPropertyAndEquipment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Goodwill 960,100,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Debt (221,500,000)lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Deferred income tax liability (862,900,000)lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Total 2,461,300,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Useful lives of property and equipment 7 years        
Charter | Franchise fees          
Excess basis allocation within memo accounts          
Intangible assets 1,451,400,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_FranchiseRightsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Charter | Trademarks          
Excess basis allocation within memo accounts          
Intangible assets 36,200,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TrademarksMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Charter | Customer relationships          
Excess basis allocation within memo accounts          
Intangible assets 664,100,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Useful lives of customer relationships 13 years        
Charter | Warrants          
Investments in affiliates accounted for using the Equity Method          
Other Significant Noncash Transaction, Value of Consideration Given 130,600,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationGiven1
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_WarrantMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
       
Liberty | Charter          
Investments in affiliates accounted for using the Equity Method          
Number of shares of common shares acquired       26,900,000lbrda_EquityMethodInvestmentNumberOfCommonSharesAcquired
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Number of warrants acquired       1,100,000lbrda_EquityMethodInvestmentNumberOfWarrantsAcquired
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Purchase price of equity method investments       2,600,000,000us-gaap_EquityMethodInvestmentAggregateCost
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Beneficial ownership percentage       27.00%lbrda_EquityMethodInvestmentBeneficialOwnershipPercentage
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Purchase price (in dollars per share)       $ 95.50lbrda_EquityMethodInvestmentCommonStockAcquiredCostPerShare
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Cash paid to acquire equity method investments       1,200,000,000us-gaap_PaymentsToAcquireEquityMethodInvestments
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Number of common shares pledged as collateral       20,300,000lbrda_NumberOfCommonSharesOwnedAndPledgedAsCollateral
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Excess basis allocation within memo accounts          
Total       2,532,300,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
 
Liberty | SIRIUS XM          
Investments in affiliates accounted for using the Equity Method          
Number of common shares pledged as collateral       720,000,000lbrda_NumberOfCommonSharesOwnedAndPledgedAsCollateral
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_SiriusXmMember
 
Liberty | Live Nation          
Investments in affiliates accounted for using the Equity Method          
Number of common shares pledged as collateral       8,100,000lbrda_NumberOfCommonSharesOwnedAndPledgedAsCollateral
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_LiveNationMember
 
Margin Loan Agreements          
Investments in affiliates accounted for using the Equity Method          
Additional borrowing         52,000,000us-gaap_ProceedsFromIssuanceOfSecuredDebt
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
Charter consolidated statement of operations          
Debt outstanding $ 372,000,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
       
Margin Loan Agreements | Charter          
Investments in affiliates accounted for using the Equity Method          
Number of common shares pledged as collateral 7,000,000lbrda_NumberOfCommonSharesOwnedAndPledgedAsCollateral
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember