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

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Cover Page
Financial Statements
Notes to Financial Statements
Notes Tables
Notes Details

Assets and Liabilities Measured at Fair Value - (Narrative) (Details)

v3.20.2

Assets and Liabilities Measured at Fair Value - (Narrative) (Details) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
	Apr. 29, 2019 $ / shares $ / item shares	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 18, 2018
Exchangeable senior debentures \| 1.75% Exchangeable Debentures
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate						1.75%
Exchangeable senior debentures \| 1.75% Exchangeable Debentures \| Indemnification obligation \| LI LLC
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate		1.75%		1.75%
Senior Debt Obligations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Change in fair value \| $		$ (9.0)	$ (7.5)	$ 16.8	$ (0.9)
Senior Debt Obligations \| Accumulated Gain (Loss), Financial Liability, Fair Value Option, Including Portion Attributable to Noncontrolling Interest
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Cumulative gain \| $		$ 11.2		$ 11.2
LendingTree \| Derivative instrument liability
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Variable forward contract, term	3 years
Variable forward contract (in shares) \| shares	642,850
Variable forward contract, closing price (in dollars per share) \| $ / shares	$ 376.35
Variable forward contract, floor price (in dollars per share) \| $ / item	0
Variable forward contract, cap price (in dollars per share) \| $ / item	254.00

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Amount, before tax and reclassification adjustment, of unrealized gain (loss) from increase (decrease) in instrument-specific credit risk of financial liability measured under fair value option.

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