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Debt (Details) (USD $)
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0 Months Ended |
3 Months Ended |
0 Months Ended |
1 Months Ended |
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Oct. 31, 2014
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Mar. 31, 2015
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Apr. 07, 2015
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Mar. 31, 2015
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Oct. 30, 2014
item
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Nov. 30, 2014
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Dec. 31, 2014
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Mar. 27, 2015
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Dec. 25, 2013
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| Debt disclosures |
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| Debt outstanding |
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$ 372,000,000us-gaap_LongTermDebt
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$ 372,000,000us-gaap_LongTermDebt
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$ 372,000,000us-gaap_LongTermDebt
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| Distribution to parent |
300,000,000lbrda_DistributionToParent
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| Margin Loan Agreements | Charter |
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| Debt disclosures |
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| Number of common shares pledged as collateral |
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7,000,000lbrda_NumberOfCommonSharesOwnedAndPledgedAsCollateral
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
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| Value of pledged collateral |
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1,400,000,000us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
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1,400,000,000us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_CharterCommunicationsMember
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| Revolving Credit Facility |
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| Debt disclosures |
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| Maximum borrowing capacity |
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234,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
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| Basis spread on variable rate |
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0.64%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
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| Line of Credit Facility, Maximum Borrowing Capacity |
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234,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
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| Proceeds from Issuance of Debt |
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40,000,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
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0us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
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| Debt Instrument, Unused Borrowing Capacity Fee, Percent |
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0.12%lbrda_DebtInstrumentUnusedBorrowingCapacityFeePercent
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
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0.12%lbrda_DebtInstrumentUnusedBorrowingCapacityFeePercent
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
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| Revolving Credit Facility | Time Warner |
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| Debt disclosures |
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| Number of common shares pledged as collateral |
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1,700,000lbrda_NumberOfCommonSharesOwnedAndPledgedAsCollateral
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_TimeWarnerCableIncMember
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| Security Owned and Pledged as Collateral, Fair Value, Per Share |
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$ 149.88lbrda_SecurityOwnedAndPledgedAsCollateralFairValuePerShare
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_TimeWarnerCableIncMember
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$ 149.88lbrda_SecurityOwnedAndPledgedAsCollateralFairValuePerShare
/ us-gaap_DebtInstrumentAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= lbrda_TimeWarnerCableIncMember
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| Revolving Credit Facility | Three-month LIBOR |
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| Debt disclosures |
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| Interest rate basis |
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three-month LIBOR
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| BroadbandSPV | Margin Loan Agreements |
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| Debt disclosures |
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| Debt outstanding |
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372,000,000us-gaap_LongTermDebt
/ us-gaap_CounterpartyNameAxis
= lbrda_BroadbandSpvMember
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
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372,000,000us-gaap_LongTermDebt
/ us-gaap_CounterpartyNameAxis
= lbrda_BroadbandSpvMember
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
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| Remaining borrowing capacity |
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28,000,000us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount
/ us-gaap_CounterpartyNameAxis
= lbrda_BroadbandSpvMember
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
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28,000,000us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount
/ us-gaap_CounterpartyNameAxis
= lbrda_BroadbandSpvMember
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
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| BroadbandSPV | Margin Loan Agreements | Three-month LIBOR |
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| Debt disclosures |
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| Interest rate basis |
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three-month LIBOR
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| Basis spread on variable rate |
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1.55%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CounterpartyNameAxis
= lbrda_BroadbandSpvMember
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
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| BroadbandSPV | Margin Loan Agreements |
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| Debt disclosures |
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| Number of debt agreement |
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2lbrda_NumberOfDebtAgreements
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ dei_LegalEntityAxis
= lbrda_BroadbandSpvMember
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| Maximum borrowing capacity |
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400,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ dei_LegalEntityAxis
= lbrda_BroadbandSpvMember
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| Proceeds From Issuance Of Secured Debt |
320,000,000us-gaap_ProceedsFromIssuanceOfSecuredDebt
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ dei_LegalEntityAxis
= lbrda_BroadbandSpvMember
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52,000,000us-gaap_ProceedsFromIssuanceOfSecuredDebt
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ dei_LegalEntityAxis
= lbrda_BroadbandSpvMember
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| Line of Credit Facility, Maximum Borrowing Capacity |
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400,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= lbrda_MarginLoanAgreementsMember
/ dei_LegalEntityAxis
= lbrda_BroadbandSpvMember
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| TruePosition | Line of credit |
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| Debt disclosures |
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| Maximum borrowing capacity |
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4,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ dei_LegalEntityAxis
= lbrda_TruePositionMember
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| Line of Credit Facility, Maximum Borrowing Capacity |
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4,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ dei_LegalEntityAxis
= lbrda_TruePositionMember
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| TruePosition | Standby Letters of Credit |
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| Debt disclosures |
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| Long-term Line of Credit |
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$ 0us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= us-gaap_StandbyLettersOfCreditMember
/ dei_LegalEntityAxis
= lbrda_TruePositionMember
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$ 0us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= us-gaap_StandbyLettersOfCreditMember
/ dei_LegalEntityAxis
= lbrda_TruePositionMember
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$ 634,000us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= us-gaap_StandbyLettersOfCreditMember
/ dei_LegalEntityAxis
= lbrda_TruePositionMember
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| Interest rate (as a percent) |
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1.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_StandbyLettersOfCreditMember
/ dei_LegalEntityAxis
= lbrda_TruePositionMember
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