Annual report pursuant to Section 13 and 15(d)

Basis Of Presentation (Narrative) (Details)

v2.4.0.8
Basis Of Presentation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Jan. 18, 2013
SIRIUS XM [Member]
Dec. 31, 2013
Lease Agreements [Member]
Related Party Costs $ 16 $ 10    
Purchase of shares in equity method investee     50,000,000  
Preferred Stock, Par or Stated Value Per Share $ 0.01 $ 0.01 $ 0.001  
Convertible Preferred Stock, Shares Issued upon Conversion     1,293,509,076  
Related Party Transaction, Amounts of Transaction       $ 3