Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets Intangible Assets (Narrative) (Details)

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Intangible Assets Intangible Assets (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Goodwill [Line Items]        
Amortization of Intangible Assets $ 41 $ 29 $ 77 $ 55
SIRIUS XM
       
Goodwill [Line Items]        
Indefinite-Lived Trade Names 930   930  
ANLBC
       
Goodwill [Line Items]        
Indefinite-Lived Franchise Rights $ 143   $ 143