Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Debt) (Details)

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Long-Term Debt (Debt) (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Debt and capital lease obligations $ 3,948 $ 3,813
Current portion of debt and capital lease obligations (11) (13)
Long-term portion of debt and capital lease obligations 3,937 3,800
3.125% Senior Secured Notes due 2019, net of original issue discount
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 399 0
7.5% Senior Secured Notes due 2019, net of original issue discount
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 761 761
7.375% Senior Secured Notes due 2020
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 500 500
5.125% Senior Secured Notes due 2022
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 500 500
4.375% Senior Secured Notes due 2023, net of original issue discount
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 750 750
4.85% Senior Secured Notes due 2024, net of original issue discount
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 600 0
5.95% Senior Secured Notes due 2043, net of original issue discount
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 300 300
Senior secured credit facility
   
Debt Instrument [Line Items]    
Debt and capital lease obligations 65 922
Capital lease obligations
   
Debt Instrument [Line Items]    
Debt and capital lease obligations $ 73 $ 80