Quarterly report pursuant to Section 13 or 15(d)

Debt (Details 3)

v3.2.0.727
Debt (Details 3)
 1 Months Ended 6 Months Ended
Dec. 31, 2014
USD ($)
$ / shares
$ / item
shares
Oct. 17, 2013
USD ($)
$ / shares
$ / item
shares
Apr. 30, 2013
USD ($)
Oct. 31, 2014
USD ($)
Jun. 30, 2015
USD ($)
item
Jun. 30, 2014
USD ($)
Dec. 31, 2012
USD ($)
Debt Instrument [Line Items]              
Long-term Debt $ 5,852,000,000       $ 6,557,000,000    
Borrowings of debt         1,343,000,000 $ 1,948,000,000  
Repayments of Long-term Debt         $ 661,000,000 $ 1,573,000,000  
Sirius XM credit facility              
Debt Instrument [Line Items]              
Long-term Debt $ 380,000,000            
Debt instrument, unused borrowing capacity, fee, percent         0.30%    
Line of Credit Facility, Remaining Borrowing Capacity         $ 1,750,000,000    
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 | item         5    
Number of consecutive trading days in measurement period.         5 days    
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger         130.00%    
$1 billion margin loan due 2014              
Debt Instrument [Line Items]              
Interest rate at year end         2.03%    
$1 billion margin loan due 2014 | Term loan              
Debt Instrument [Line Items]              
Debt face amount       $ 250,000,000      
Borrowings of debt     $ 250,000,000        
Debt Instrument, Description of Variable Rate Basis           LIBOR  
Debt Instrument, Basis Spread on Variable Rate           2.00%  
$1 billion margin loan due 2014 | Revolving Credit Facility              
Debt Instrument [Line Items]              
Debt face amount       $ 750,000,000      
Borrowings of debt     $ 450,000,000        
Debt Instrument, Description of Variable Rate Basis       LIBOR      
Debt instrument, basis spread on variable rate, floor       1.75%      
Debt instrument, basis spread on variable rate, cap       2.50%      
Debt instrument, unused borrowing capacity, fee, percent       0.75%      
Line of Credit Facility, Remaining Borrowing Capacity         $ 750,000,000    
Incremental borrowing capacity           $ 1,000,000,000  
Sirius Xm 5.375 Senior Notes Due 2025              
Debt Instrument [Line Items]              
Debt face amount         1,000,000,000    
Debt discount         $ 11,000,000    
Debt Instrument, Interest Rate, Stated Percentage         5.375%    
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          
SIRIUS XM | Sirius XM credit facility | Sirius XM 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          
Payments for Derivative Instrument, Investing Activities   $ 299,000,000          
1.375% Convertible Notes Bond Hedge Transaction | Common Class A              
Debt Instrument [Line Items]              
Forward contract, number of underlying shares | shares   5,588,200