Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method - Sirius XM Canada (Details)

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Investments In Affiliates Accounted For Using The Equity Method - Sirius XM Canada (Details)
shares in Millions, CAD in Millions, $ in Millions
3 Months Ended 6 Months Ended
May 25, 2017
USD ($)
shares
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
May 25, 2017
CAD
May 25, 2017
USD ($)
Dec. 31, 2016
USD ($)
Schedule of Equity Method Investments [Line Items]                
Gain (Loss) On Dilution Of Investment In Affiliate       $ 2 $ (2)      
Deferred revenue   $ 2,292   2,292       $ 1,877
SIRIUS XM                
Schedule of Equity Method Investments [Line Items]                
Due to Related Parties, Current   3   3        
Due to Related Parties, Noncurrent   7   7        
Due from Related Parties, Current   12   12        
SIRIUS XM | Sirius XM Canada                
Schedule of Equity Method Investments [Line Items]                
Revenue from Related Parties   $ 28 $ 11 40 21      
Dividends     $ 4 $ 4 $ 8      
Percentage ownership           70.00% 70.00%  
Equity Method Investment Voting Interest 33.00%              
Payments to Acquire Equity Method Investments $ 130              
Equity method investment consideration transferred $ 309              
Issuance of common stock related to investment in Sirius XM Canada (in shares) | shares 35              
Equity method investment, consideration transferred, equity interests issued and issuable $ 179              
Equity Method Investment, Number of Preferred Shares Owned | shares 591              
SIRIUS XM | Sirius XM Canada | Services Agreement                
Schedule of Equity Method Investments [Line Items]                
Related Party Transaction, Period Of Agreement 30 years              
SIRIUS XM | Sirius XM Canada | Services Agreement, Years 1 through 5                
Schedule of Equity Method Investments [Line Items]                
Related Party Transaction, Payments Receivable, Percent of Gross Revenue 25.00%              
SIRIUS XM | Sirius XM Canada | Services Agreement, Years 6 through 30                
Schedule of Equity Method Investments [Line Items]                
Related Party Transaction, Payments Receivable, Percent of Gross Revenue 30.00%              
SIRIUS XM | Sirius XM Canada | Advisory Services Agreement                
Schedule of Equity Method Investments [Line Items]                
Related Party Transaction, Period Of Agreement 30 years              
Related Party Transaction, Payments Receivable, Percent of Gross Revenue 5.00%              
SIRIUS XM | Sirius XM Canada | Related Party 7.62% Loan                
Schedule of Equity Method Investments [Line Items]                
Notes Receivable, Related Parties, Noncurrent             $ 131  
Notes receivable, related parties, maturity period 15 years              
Related Party Transaction, Rate 7.62%              
Notes Receivable, Related Parties, Annual Principal Repayment Period 60 days              
Notes Receivable, Related Parties, Annual Prepayment Excess Cash Threshold | CAD           CAD 10