Annual report pursuant to Section 13 and 15(d)

Long-Term Debt (Debt) (Details)

v3.6.0.2
Long-Term Debt (Debt) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Build to suit lease obligation $ 105 $ 0
Less debt issuance costs, net (28) (32)
Total debt and capital lease obligations 5,289 5,402
Less current portion (14) (9)
Long-term portion of debt and capital lease obligations 5,275 5,393
3.125% Senior Secured Notes due 2019, net of original issue discount    
Debt Instrument [Line Items]    
Debt and capital lease obligations 399 399
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 600 600
4.45% Senior Secured Notes due 2025, net of original issue discount    
Debt Instrument [Line Items]    
Debt and capital lease obligations 599 599
5.45% Senior Secured Notes due 2034, net of original issue discount    
Debt Instrument [Line Items]    
Debt and capital lease obligations 399 399
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 1,596 1,815
Capital lease obligations    
Debt Instrument [Line Items]    
Debt and capital lease obligations $ 69 $ 72