Summary of Significant Accounting Policies Goodwill (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Goodwill [Roll Forward] | ||
| Goodwill, Acquired During Period | $ 904 | |
| Goodwill, Purchase Accounting Adjustments | $ 18 | |
| Beginning balance | 5,979 | 4,995 |
| Exchange rate fluctuations | (25) | 80 |
| Ending balance | 5,972 | 5,979 |
| QVC-U.S. | ||
| Goodwill [Roll Forward] | ||
| Beginning balance | 4,190 | 4,190 |
| Ending balance | 4,190 | 4,190 |
| QVC-International | ||
| Goodwill [Roll Forward] | ||
| Beginning balance | 885 | 805 |
| Exchange rate fluctuations | (25) | 80 |
| Ending balance | 860 | 885 |
| HSN, Inc. | ||
| Goodwill [Roll Forward] | ||
| Goodwill, Acquired During Period | 904 | |
| Goodwill, Purchase Accounting Adjustments | 18 | |
| Beginning balance | 904 | 0 |
| Exchange rate fluctuations | 0 | 0 |
| Ending balance | $ 922 | $ 904 |
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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/presentationRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the 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/presentationRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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