Quarterly report pursuant to Section 13 or 15(d)

Debt (Details 3)

v3.3.0.814
Debt (Details 3)
 1 Months Ended 9 Months Ended 13 Months Ended
Dec. 31, 2014
USD ($)
$ / shares
$ / item
shares
Oct. 17, 2013
USD ($)
$ / shares
$ / item
shares
Apr. 30, 2013
USD ($)
Oct. 31, 2015
USD ($)
shares
Sep. 30, 2015
USD ($)
item
Sep. 30, 2014
USD ($)
Oct. 31, 2015
USD ($)
Oct. 31, 2014
USD ($)
Dec. 31, 2012
USD ($)
Debt Instrument [Line Items]                  
Long-term Debt $ 5,852,000,000       $ 6,802,000,000        
Borrowings of debt         1,779,000,000 $ 2,218,000,000      
Repayments of Long-term Debt         818,000,000 $ 1,660,000,000      
Sirius XM credit facility                  
Debt Instrument [Line Items]                  
Long-term Debt $ 380,000,000       $ 290,000,000        
Debt instrument, unused borrowing capacity, fee, percent         0.30%        
Line of Credit Facility, Remaining Borrowing Capacity         $ 1,460,000,000        
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 | Term loan                  
Debt Instrument [Line Items]                  
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]                  
Borrowings of debt     $ 450,000,000            
Incremental borrowing capacity           $ 1,000,000,000      
$1 billion margin loan due 2015                  
Debt Instrument [Line Items]                  
Debt Instrument, Description of Variable Rate Basis             LIBOR    
Interest rate at year end         1.38%        
$1 billion margin loan due 2015 | Term loan                  
Debt Instrument [Line Items]                  
Debt face amount               $ 250,000,000  
$1 billion margin loan due 2015 | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Debt instrument, unused borrowing capacity, fee, percent             0.75%    
Line of Credit Facility, Remaining Borrowing Capacity         $ 750,000,000        
Line of Credit Facility, Maximum Borrowing Capacity               $ 750,000,000  
$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     $ 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    
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              
Minimum | $1 billion margin loan due 2015                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate             1.75%    
Minimum | $1.25 billion margin loan due 2016                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate       1.75%          
Maximum | $1 billion margin loan due 2015                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate             2.50%    
Maximum | $1.25 billion margin loan due 2016                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate       2.25%          
SIRIUS XM | $1.25 billion margin loan due 2016                  
Debt Instrument [Line Items]                  
Shares released as collateral | shares       4,600,000          
Live Nation | $1.25 billion margin loan due 2016                  
Debt Instrument [Line Items]                  
Shares released as collateral | shares       7,800,000          
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