Annual report pursuant to Section 13 and 15(d)

Basis of Presentation (Details)

v3.8.0.1
Basis of Presentation (Details) - USD ($)
$ in Millions
 12 Months Ended 60 Months Ended
Jul. 23, 2014
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2017
Jan. 23, 2017
Sep. 07, 2016
Nov. 04, 2014
Entity Information [Line Items]                
Number of shares received in spin-off               0.25
Additional paid in capital deficit reclassification       $ 499        
Related Party Transaction, Amounts of Transaction   $ 24 $ 21 $ 23        
Stock Repurchased and Retired During Period, Shares   0 0 9,200,000        
Payments for Repurchase of Common Stock       $ 350        
Starz, LLC                
Entity Information [Line Items]                
Related Party Transaction, Amounts of Transaction   $ 4            
SIRIUS XM                
Entity Information [Line Items]                
Stock Repurchased and Retired During Period, Shares         2,500,000,000      
Payments for Repurchase of Common Stock         $ 9,400      
Ownership Interest In Investee   70.00%     70.00%      
Liberty Media Corporation | Common Class C                
Entity Information [Line Items]                
Number of Shares Issued During The Period For Each Share of Series A and Series B Stock Held By Shareholders Prior To The Distribution 2              
Delta Topco                
Entity Information [Line Items]                
Business Acquisition, Percentage of Voting Interests Acquired           100.00% 20.00%  
Maximum | Delta Topco                
Entity Information [Line Items]                
Business Acquisition, Percentage of Voting Interests Acquired             20.00%