Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.22.4
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2022
Jan. 31, 2023
Jun. 30, 2022
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2022    
Document Transition Report false    
Entity File Number 001-36713    
Entity Registrant Name LIBERTY BROADBAND CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 47-1211994    
Entity Address, Address Line One 12300 Liberty Boulevard    
Entity Address, City or Town Englewood    
Entity Address, State or Province CO    
Entity Address, Postal Zip Code 80112    
City Area Code 720    
Local Phone Number 875-5700    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 16.5
Auditor Name KPMG LLP    
Auditor Firm ID 185    
Auditor Location Denver, CO    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001611983    
Amendment Flag false    
Series A common stock      
Document Information [Line Items]      
Title of 12(b) Security Series A common stock    
Trading Symbol LBRDA    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   18,246,519  
Series B common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   2,050,889  
Series C common stock      
Document Information [Line Items]      
Title of 12(b) Security Series C common stock    
Trading Symbol LBRDK    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   126,002,167  
Series A Cumulative Redeemable Preferred Stock.      
Document Information [Line Items]      
Title of 12(b) Security Series A Cumulative Redeemable preferred stock    
Trading Symbol LBRDP    
Security Exchange Name NASDAQ