Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensations (Grants) (Details)

v3.10.0.1
Stock-Based Compensations (Grants) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Volatility Rate, Minimum 29.70% 26.90% 27.40%
Volatility Rate, Maximum 30.50% 32.70% 27.40%
Common Class A      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding options 32,361    
Options granted 4,768    
Options exercised (4,269)    
Options forfeited/cancelled (4,422)    
Outstanding options 28,438 32,361  
Exercisable options 17,371    
Outstanding WAEP, Beginning Balance $ 23.48    
WAEP granted 26.78    
WAEP exercised 16.47    
WAEP forfeited/cancelled 27.43    
Outstanding WAEP, Ending balance 24.47 $ 23.48  
Exercisable WAEP $ 23.80    
Weighted average remaining life - options outstanding 3 years 7 months 6 days    
Weighted average remaining life - options exercisable 2 years 7 months 6 days    
Aggregate intrinsic value of options outstanding $ 23    
Aggregate intrinsic value of options exercisable $ 20    
Common Class B      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding options 1,643    
Options granted 175    
Outstanding options 1,818 1,643  
Exercisable options 1,495    
Outstanding WAEP, Beginning Balance $ 27.16    
WAEP granted 27.77    
Outstanding WAEP, Ending balance 27.22 $ 27.16  
Exercisable WAEP $ 26.65    
Weighted average remaining life - options outstanding 4 years    
Weighted average remaining life - options exercisable 4 years 2 months 12 days    
Liberty Ventures common stock      
Volatility Rate, Minimum 27.90% 25.90% 30.60%
Volatility Rate, Maximum 27.90% 28.90% 30.60%
Liberty Ventures common stock | Common Class A      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding options 1,670    
Options exercised (2)    
GCI Split-Off (1,668)    
Outstanding options   1,670  
Outstanding WAEP, Beginning Balance $ 47.12    
WAEP exercised 18.41    
WAEP GCI Liberty Split-Off $ 47.15    
Outstanding WAEP, Ending balance   $ 47.12  
Liberty Ventures common stock | Common Class B      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding options 1,080    
Options granted 143    
GCI Split-Off (1,223)    
Outstanding options   1,080  
Outstanding WAEP, Beginning Balance $ 56.38    
WAEP granted 54.01    
WAEP GCI Liberty Split-Off $ 56.10    
Outstanding WAEP, Ending balance   $ 56.38