Annual report pursuant to Section 13 and 15(d)

Cover Page

v3.19.3.a.u2
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2019
Jan. 31, 2020
Jun. 28, 2019
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-38385    
Entity Registrant Name GCI LIBERTY, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 92-0072737    
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 875-5900    
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    
Entity Shell Company false    
Entity Public Float     $ 6.2
Documents Incorporated by Reference
The Registrant's definitive proxy statement for its 2020 Annual Meeting of Stockholders is hereby incorporated by reference into Part III of this Annual Report on Form 10-K.
    
Amendment Flag false    
Entity Central Index Key 0000808461    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Series A Common Stock      
Entity Information [Line Items]      
Title of 12(b) Security Series A Common Stock, par value $0.01 per share    
Trading Symbol GLIBA    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   101,308,504  
Series A Cumulative Redeemable Preferred Stock      
Entity Information [Line Items]      
Title of 12(b) Security Series A Cumulative Redeemable preferred stock, par value $0.01 per share    
Trading Symbol GLIBP    
Security Exchange Name NASDAQ    
Series B Common Stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   4,437,400