Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.6.0.2
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2016
Jan. 31, 2017
Jun. 30, 2016
Entity Registrant Name Liberty Broadband Corp    
Entity Central Index Key 0001611983    
Document Type 10-K    
Document Period End Date Dec. 31, 2016    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 10.2
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Series A common stock      
Entity Common Stock, Shares Outstanding   26,270,193  
Series B common stock      
Entity Common Stock, Shares Outstanding   2,467,509  
Series C      
Entity Common Stock, Shares Outstanding   153,059,617