Quarterly report pursuant to Section 13 or 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 $)
3 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Nov. 30, 2014
Apr. 24, 2015
Mar. 31, 2015
May 31, 2014
May 31, 2013
Dec. 31, 2014
Charter consolidated statement of operations                
Debt outstanding $ 372,000,000us-gaap_LongTermDebt       $ 372,000,000us-gaap_LongTermDebt     $ 372,000,000us-gaap_LongTermDebt
Carrying value of equity method investment 2,455,859,000us-gaap_EquityMethodInvestments       2,455,859,000us-gaap_EquityMethodInvestments     2,498,804,000us-gaap_EquityMethodInvestments
Share of equity investment income (losses) (43,050,000)us-gaap_IncomeLossFromEquityMethodInvestments (29,650,000)us-gaap_IncomeLossFromEquityMethodInvestments            
(Gain) loss on dilution of investment in affiliate (410,000)us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome (45,838,000)us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome            
Charter                
Investments in affiliates accounted for using the Equity Method                
Cash paid to exercise warrants     52,000,000lbrda_CashPaidToExerciseWarrants
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
         
Charter consolidated balance sheet                
Current assets 7,502,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      7,502,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    371,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Property and equipment, net 8,275,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationPropertyAndEquipmentNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      8,275,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationPropertyAndEquipmentNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    8,373,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationPropertyAndEquipmentNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Goodwill 1,168,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      1,168,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    1,168,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Intangible assets, net 7,048,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationIntangibleAssetsNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      7,048,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationIntangibleAssetsNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    7,111,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationIntangibleAssetsNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Other assets 417,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      417,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    7,527,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Total assets 24,410,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      24,410,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    24,550,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Current liabilities 8,569,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      8,569,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    1,635,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Deferred income taxes 1,706,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      1,706,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    1,674,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Long-term debt 13,981,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      13,981,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    21,023,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Other liabilities 77,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      77,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    72,000,000lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Equity 77,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      77,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    146,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Total liabilities and shareholders' equity 24,410,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      24,410,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
    24,550,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
Charter consolidated statement of operations                
Revenue 2,362,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
2,202,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Operating costs and expenses (1,581,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationOperatingCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(1,447,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationOperatingCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Depreciation and amortization (514,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(505,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Other operating expenses (18,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherOperatingExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(10,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherOperatingExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Total operating costs and expenses (2,113,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationTotalCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(1,962,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationTotalCostsAndExpenses
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Operating income 249,000,000lbrda_Equitymethodinvestmentsummarizedfinancialinformationoperatingincome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
240,000,000lbrda_Equitymethodinvestmentsummarizedfinancialinformationoperatingincome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Interest expense, net (289,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationInterestExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(211,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationInterestExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Other income (expense), net (6,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(2,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationOtherExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Income tax expense (benefit), net (35,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(64,000,000)lbrda_EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpenseNet
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Net loss (81,000,000)us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
(37,000,000)us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Carrying value of equity method investment 2,456,000,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      2,456,000,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Ownership percentage 26.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      26.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Amortization of debt and intangible assets 22,500,000us-gaap_AmortizationOfDeferredCharges
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
20,200,000us-gaap_AmortizationOfDeferredCharges
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
(Gain) loss on dilution of investment in affiliate 410,000us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
45,800,000us-gaap_GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
           
Excess basis allocation within memo accounts                
Property and equipment 414,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityPropertyAndEquipment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      414,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityPropertyAndEquipment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Goodwill 958,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      958,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityGoodwill
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Debt (213,000,000)lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      (213,000,000)lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Deferred income tax liability (850,000,000)lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      (850,000,000)lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityDeferredIncomeTaxLiability
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Total 2,436,000,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      2,436,000,000us-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 1,451,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_FranchiseRightsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      1,451,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_FranchiseRightsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Charter | Trademarks                
Excess basis allocation within memo accounts                
Intangible assets 36,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TrademarksMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      36,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TrademarksMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Charter | Customer relationships                
Excess basis allocation within memo accounts                
Intangible assets 640,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      640,000,000lbrda_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquityIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
     
Useful lives of customer relationships 13 years              
Bright House                
Excess basis allocation within memo accounts                
Negotiation period       30 days        
Bright House | Forecast                
Excess basis allocation within memo accounts                
Payments to Acquire Businesses, Gross         10,400,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_BrightHouseMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
     
Liberty | Charter                
Investments in affiliates accounted for using the Equity Method                
Number of shares of common shares acquired           897,000lbrda_EquityMethodInvestmentNumberOfCommonSharesAcquired
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
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           124,500,000us-gaap_EquityMethodInvestmentAggregateCost
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
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
 
Charter consolidated statement of operations                
Market value of equity method investment 5,569,000,000us-gaap_EquityMethodInvestmentQuotedMarketValue
/ dei_LegalEntityAxis
= lbrda_LibertyMediaCorporationAndItsSubsidiariesMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
      5,569,000,000us-gaap_EquityMethodInvestmentQuotedMarketValue
/ 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
 
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