Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Stock-Based Compensation Allocated To Selling, General And Administrative Expenses) (Details)

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Stock-Based Compensation (Stock-Based Compensation Allocated To Selling, General And Administrative Expenses) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation $ 52 $ 7 $ 141 $ 18
Programming and content expense [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation allocated to selling, general, and administrative 4 0 11 0
Customer service and billing [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation allocated to selling, general, and administrative 1 0 3 0
Other cost of subscriber services [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation allocated to selling, general, and administrative 2 0 5 0
Other Operating Expense [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation allocated to selling, general, and administrative 4 0 10 0
Selling, General and Administrative Expenses [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation allocated to selling, general, and administrative $ 41 $ 7 $ 112 $ 18