Liberty Broadband Corporation Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Business and Summary of Significant Accounting Principles (Policies)
Notes Tables
Notes Details

Commitments and Contingencies (Narrative) (Details)

v2.4.1.9

Commitments and Contingencies (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended			0 Months Ended
	Jan. 01, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 22, 2013	Feb. 28, 2014	Dec. 31, 2015
Operating Leases as Lessee
Rental costs		$ 43,800,000us-gaap_OperatingLeasesRentExpenseNet	$ 46,500,000us-gaap_OperatingLeasesRentExpenseNet	$ 37,400,000us-gaap_OperatingLeasesRentExpenseNet
Capital Leases as Lessee
Capital lease term		14 years
Capital lease obligations		98,600,000us-gaap_CapitalLeaseObligations
Capital lease obligation incurred	9,400,000us-gaap_CapitalLeaseObligationsIncurred	9,386,000us-gaap_CapitalLeaseObligationsIncurred	0us-gaap_CapitalLeaseObligationsIncurred	0us-gaap_CapitalLeaseObligationsIncurred
Self-Insurance
Coverage limit per incident		500,000
Self insurance reserve		4,000,000gncma_SelfInsuranceReserveHealthCare	3,100,000gncma_SelfInsuranceReserveHealthCare
Workers compensation self insurance coverage limit per incident		500,000
Workers compensation self insurance reserve		3,800,000us-gaap_SelfInsuranceReserve	3,700,000us-gaap_SelfInsuranceReserve
Cable Service Rate Reregulation
Percent of subscribers request for petition		25.00%
ACS
AWN Member Distribution Adjustment
Preferential adjustment maximum					21,800,000
Favorable Regulatory Action [Member]
AWN Member Distribution Adjustment
Grant proceeds						41,400,000
Customer Concentration Risk
Cable Service Rate Reregulation
Concentration Risk, Percentage		6.00%
Forecast [Member] \| Minimum \| Favorable Regulatory Action [Member]
AWN Member Distribution Adjustment
Grant proceeds							6,000,000
Forecast [Member] \| Maximum \| Favorable Regulatory Action [Member]
AWN Member Distribution Adjustment
Grant proceeds							$ 16,000,000

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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