Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v2.4.1.9
Stock-Based Compensation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2015
Dec. 31, 2014
Options      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 24us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions $ 24us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years 1 month    
Common Stock, Capital Shares Reserved for Future Issuance 3,900,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance 3,900,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance  
Class C common stock      
Stock Based Compensation      
Vesting period 2 years    
Weighted average grant date fair value (in dollars per share) $ 15.03us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
$ 15.03us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
Options      
Options granted (in shares) 3,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
   
2014 Plan | Awards | Class A common stock      
Options      
Outstanding beginning balance (in shares)   790,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Exercised (in shares) (16,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
   
Forfeited/Cancelled (in shares) (1,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
   
Outstanding ending balance (in shares) 790,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
790,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Number of awards exercisable (in shares) 674,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
674,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
WAEP Outstanding beginning balance (in dollars per share) $ 32.21us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 32.25us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
WAEP options exercised (in dollars per share) $ 30.58us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
   
WAEP options forfeited/cancelled (in dollars per share) $ 34.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
   
WAEP Outstanding ending balance (in dollars per share) $ 32.25us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 32.25us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
WAEP options exercisable (in dollars per share) $ 31.98us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 31.98us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Weighted average remaining contractual life outstanding   4 years  
Weighted average remaining contractual life exercisable   3 years 9 months  
Aggregate intrinsic value outstanding 19us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
19us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Aggregate intrinsic value exercisable 17us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
17us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
2014 Plan | Awards | Class C common stock      
Options      
Outstanding beginning balance (in shares) 3,137,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
3,070,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
Options granted (in shares) 3,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
   
Exercised (in shares) (69,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
   
Forfeited/Cancelled (in shares) (1,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
   
Outstanding ending balance (in shares) 3,070,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
3,070,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
Number of awards exercisable (in shares) 1,326,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
1,326,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
WAEP Outstanding beginning balance (in dollars per share) $ 39.85us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
$ 40.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
WAEP Options granted (in dollars per share) $ 53.86us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
   
WAEP options exercised (in dollars per share) $ 31.96us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
   
WAEP options forfeited/cancelled (in dollars per share) $ 34.22us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
   
WAEP Outstanding ending balance (in dollars per share) $ 40.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
$ 40.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
WAEP options exercisable (in dollars per share) $ 31.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
$ 31.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
Weighted average remaining contractual life outstanding   5 years 3 months  
Weighted average remaining contractual life exercisable   3 years 9 months  
Aggregate intrinsic value outstanding 51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
Aggregate intrinsic value exercisable $ 33us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
$ 33us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember
 
2014 Plan | Options | Class A common stock      
Options      
Outstanding beginning balance (in shares)     807,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Outstanding ending balance (in shares)     807,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember