Goodwill (Details) $ in Millions  | 
6 Months Ended | 
|---|---|
| 
 Jun. 30, 2020  
USD ($) 
 | |
| Goodwill [Line Items] | |
| Balance as of December 31, 2019 | $ 5,971 | 
| Exchange rate fluctuations | (2) | 
| Balance as of June 30, 2020 | 5,969 | 
| QxH [Member] | |
| Goodwill [Line Items] | |
| Balance as of December 31, 2019 | 5,112 | 
| Exchange rate fluctuations | 0 | 
| Balance as of June 30, 2020 | 5,112 | 
| QVC-International | |
| Goodwill [Line Items] | |
| Balance as of December 31, 2019 | 859 | 
| Exchange rate fluctuations | (2) | 
| Balance as of June 30, 2020 | $ 857 | 
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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