Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.4.0.3
Debt (Details)
 1 Months Ended 3 Months Ended
Dec. 31, 2014
$ / shares
$ / item
shares
Oct. 17, 2013
USD ($)
$ / shares
$ / item
shares
Oct. 31, 2015
USD ($)
Dec. 31, 2012
USD ($)
Mar. 31, 2016
USD ($)
item
Mar. 31, 2015
USD ($)
Apr. 15, 2016
shares
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]                
Long-term Debt         $ 7,118,000,000     $ 6,881,000,000
Borrowings of debt         335,000,000 $ 1,275,000,000    
Repayments of Long-term Debt         $ 111,000,000 658,000,000    
Sirius XM Senior Secured Revolving Credit Facility                
Debt Instrument [Line Items]                
Debt instrument, unused borrowing capacity, fee, percent         0.30%      
Line of Credit Facility, Remaining Borrowing Capacity         $ 1,150,000,000      
Debt Instrument, Term       5 years        
Line of Credit Facility, Maximum Borrowing Capacity       $ 1,250,000,000        
1.375% Cash Convertible Senior Notes due 2023                
Debt Instrument [Line Items]                
Debt face amount   $ 1,000,000,000            
Debt Instrument, Interest Rate, Stated Percentage   1.375%            
Debt instrument, face amount per debenture   $ 1,000            
Debt Instrument, Convertible, Threshold Trading Days | item         20      
Debt Instrument, Convertible, Threshold Consecutive Trading Days         30 days      
Debt instrument, convertible, threshold percentage of conversion price to stock price trigger         98.00%      
Number of business days in measurement period         5 years      
Number of consecutive trading days in measurement period.         5 days      
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger         130.00%      
$1.25 billion margin loan due 2016                
Debt Instrument [Line Items]                
Debt Instrument, Description of Variable Rate Basis     LIBOR          
$1.25 billion margin loan due 2016 | Term loan                
Debt Instrument [Line Items]                
Debt face amount     $ 250,000,000          
$1.25 billion margin loan due 2016 | Revolving Credit Facility                
Debt Instrument [Line Items]                
Debt instrument, unused borrowing capacity, fee, percent     0.75%          
Line of Credit Facility, Remaining Borrowing Capacity     $ 1,000,000,000   $ 1,000,000,000      
Common Class A | 1.375% Cash Convertible Senior Notes due 2023                
Debt Instrument [Line Items]                
Debt Instrument, Convertible, Conversion Ratio 21.0859 5.5882            
conversion price for exchangeable debt | $ / shares $ 47.43 $ 178.95            
Minimum | $1.25 billion margin loan due 2016                
Debt Instrument [Line Items]                
Debt Instrument, Basis Spread on Variable Rate     1.75%          
Maximum | $1.25 billion margin loan due 2016                
Debt Instrument [Line Items]                
Debt Instrument, Basis Spread on Variable Rate     2.25%          
SIRIUS XM | Sirius XM Senior Secured Revolving Credit Facility | Sirius XM Senior Secured Revolving Credit Facility                
Debt Instrument [Line Items]                
Line of Credit Facility, Maximum Borrowing Capacity         1,750,000,000      
1.375% Convertible Notes Bond Hedge Transaction                
Debt Instrument [Line Items]                
Forward contract, number of underlying shares | shares 21,085,900              
Derivative, Cap Price | $ / item 47.43 178.95            
1.375% Convertible Notes Bond Hedge Transaction | Common Class A                
Debt Instrument [Line Items]                
Forward contract, number of underlying shares | shares   5,588,200            
Liberty Sirius XM Group                
Debt Instrument [Line Items]                
Long-term Debt         5,975,000,000     5,709,000,000
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares             1  
Borrowings of debt         330,000,000 1,265,000,000    
Repayments of Long-term Debt         72,000,000 658,000,000    
Liberty Sirius XM Group | Sirius XM Senior Secured Revolving Credit Facility                
Debt Instrument [Line Items]                
Long-term Debt         600,000,000     340,000,000
Liberty Sirius XM Group | Common Class A                
Debt Instrument [Line Items]                
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares             1.0  
Liberty Braves Group                
Debt Instrument [Line Items]                
Long-term Debt         108,000,000     139,000,000
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares             0.1  
Borrowings of debt         5,000,000 $ 10,000,000    
Repayments of Long-term Debt         38,000,000      
Liberty Braves Group | Common Class A                
Debt Instrument [Line Items]                
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares             0.10  
Liberty Media Group                
Debt Instrument [Line Items]                
Long-term Debt         1,035,000,000     $ 1,033,000,000
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares             0.25  
Repayments of Long-term Debt         $ 1,000,000      
Liberty Media Group | 1.375% Cash Convertible Senior Notes due 2023                
Debt Instrument [Line Items]                
Debt Instrument, Interest Rate, Stated Percentage             1.375%  
Liberty Media Group | Common Class A                
Debt Instrument [Line Items]                
Number of tracking stock shares received in the Recapitalization for one share of Liberty Media common stock | shares             0.25