v3.26.1
Document and Entity Information
Aug. 19, 2026
Entity Listings [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 19, 2026
Current Fiscal Year End Date --12-31
Entity File Number 001-36713
Entity Registrant Name LIBERTY BROADBAND CORPORATION
Entity Central Index Key 0001611983
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 47-1211994
Entity Address, Address Line One 400 Washington Blvd.
Entity Address, City or Town Stamford
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06902
City Area Code 203
Local Phone Number 905-7801
Entity Emerging Growth Company false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Common Class A [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Series A common stock
Trading Symbol LBRDA
Security Exchange Name NASDAQ
Common Class C [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Series C common stock
Trading Symbol LBRDK
Security Exchange Name NASDAQ
Series A Cumulative Redeemable preferred stock [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Series A Cumulative Redeemable preferred stock
Trading Symbol LBRDP
Security Exchange Name NASDAQ