Liberty Broadband Corporation Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 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

Stockholders' Equity (Narratives) (Details)

v3.4.0.3

Stockholders' Equity (Narratives) (Details) - USD ($)	3 Months Ended
Stockholders' Equity (Narratives) (Details) - USD ($)	Mar. 31, 2016	Mar. 31, 2015
Common Stock [Abstract]
Stock Repurchased and Retired During Period, Value	$ 11,551,000	$ 16,993,000
Restricted Stock [Member]
Share-based Compensation [Abstract]
Unrecognized share-based compensation expense	$ 16,300,000
Weighted average period for recognition of unvested shares	1 year 9 months 18 days
Common Stock - Class A [Member]
Common Stock [Abstract]
Stock Repurchased and Retired During Period, Value	$ 1,557,000	$ 16,878,000
Share-based Compensation [Abstract]
Number of shares authorized	15,700,000.0
Maximum [Member] \| Restricted Stock [Member]
Share-based Compensation [Abstract]
Vesting period	3 years
Stock Option Plan Member [Member] \| Restricted Stock [Member]
Share-based Compensation [Abstract]
Granted (USD per share)	$ 18.16	$ 14.56
Fair value of awards vesting during period	$ 1,500,000	$ 3,000,000
Stock Option Plan Member [Member] \| Common Stock - Class A [Member]
Share-based Compensation [Abstract]
Number of shares available for grant	1,600,000
Stock Buyback Program [Member]
Common Stock [Abstract]
Amount authorized per quarter by Board for share repurchases	$ 5,000,000
Stock Repurchased and Retired During Period, Shares	600,000	1,100,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 89,200,000.0
Stock Buyback Program [Member] \| Common Stock - Class A [Member]
Common Stock [Abstract]
Stock Repurchased and Retired During Period, Value	11,100,000	$ 16,100,000
Other Nonoperating Income (Expense) [Member]
Share-based Compensation [Abstract]
Share-based compensation expense	$ 2,300,000	$ 2,800,000

- Definition

Amount Authorized Per Quarter By Board For Share Repurchases

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Common Stock [Abstract]

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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