Annual report pursuant to Section 13 and 15(d)

Debt (Debt Securities That Are Not Reported At Fair Value) (Details)

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Debt (Debt Securities That Are Not Reported At Fair Value) (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
2019 $ 433  
2020 32  
2021 32  
2022 530  
2023 2,101  
Senior Debentures    
Debt Instrument [Line Items]    
Fair Value of Debt Securities That Are Not Reported at Fair Value 786 $ 866
QVC Senior Secured Notes    
Debt Instrument [Line Items]    
Fair Value of Debt Securities That Are Not Reported at Fair Value $ 3,573 $ 3,636