Annual report pursuant to Section 13 and 15(d)

Tracking Stocks (Details)

v3.10.0.1
Tracking Stocks (Details)
$ / shares in Units, $ in Millions
1 Months Ended
Sep. 07, 2016
agreement
Sep. 07, 2016
item
May 16, 2016
shares
Jun. 30, 2016
USD ($)
Jun. 16, 2016
$ / shares
shares
May 11, 2016
Dec. 31, 2018
USD ($)
shares
Dec. 03, 2018
Mar. 06, 2018
Dec. 31, 2017
USD ($)
Jan. 23, 2017
Oct. 27, 2016
Apr. 15, 2016
shares
Tracking Stocks                          
Number of tracking stock groups                         3
Cash and cash equivalents             $ 358     $ 1,029      
Liberty Sirius XM Group                          
Tracking Stocks                          
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares                         1
Cash and cash equivalents             91     615      
Braves Group                          
Tracking Stocks                          
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares                         0.1
Cash and cash equivalents             107     132      
Braves Group | Common Class C                          
Tracking Stocks                          
Number of subscription rights received for each share of common stock held | shares     0.47                    
Share Price | $ / shares         $ 12.80                
Percentage discount on stock subscriptions           20              
Pre rights offering trading period           18 days              
Stock issued (in shares) | shares         15,833,634                
Formula One Group                          
Tracking Stocks                          
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares                         0.25
Cash and cash equivalents             160     $ 282      
SIRIUS XM | Liberty Sirius XM Group                          
Tracking Stocks                          
Cash and cash equivalents             $ 54            
Formula 1 | Braves Group                          
Tracking Stocks                          
Percentage ownership             15.10%           20.00%
Investment Owned, Balance, Shares | shares             9,084,940            
Formula 1 | Formula One Group                          
Tracking Stocks                          
Cash and cash equivalents             $ 30            
Braves Holdings | Braves Group                          
Tracking Stocks                          
Cash and cash equivalents             $ 40            
Intergroup Note | Braves Group                          
Tracking Stocks                          
Repayments of Lines of Credit       $ 150                  
2.125% Exchangeable Senior Debentures Due 2048                          
Tracking Stocks                          
Debt instrument interest rate                 2.125%        
2.125% Exchangeable Senior Debentures Due 2048 | SIRIUS XM                          
Tracking Stocks                          
Debt instrument interest rate             2.125%            
1.375% Cash Convertible Notes due 2023                          
Tracking Stocks                          
Debt instrument interest rate             1.375%            
1% Cash Convertible Notes Due 2023                          
Tracking Stocks                          
Debt instrument interest rate             1.00%       1.00%    
2.25% Exchangeable Senior Debentures due 2046                          
Tracking Stocks                          
Debt instrument interest rate             2.25%            
2.25% Exchangeable Senior Debentures due 2048                          
Tracking Stocks                          
Debt instrument interest rate             2.25% 2.25%          
Delta Topco                          
Tracking Stocks                          
Investment ownership percentage 20.00% 20.00%                      
Number of stock purchase agreements 2 2                      
Percentage of diluted investment                       19.10%  
Interest acquired (as a percent) 20.00% 20.00%                 100.00%    
Delta Topco | Maximum                          
Tracking Stocks                          
Interest acquired (as a percent) 20.00% 20.00%