Goodwill and Other Intangible Assets - Zulily Impairment (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2020 |
|
Indefinite-lived Intangible Assets [Line Items] | ||||
Impairments of goodwill | $ 440 | |||
Zulily | ||||
Indefinite-lived Intangible Assets [Line Items] | ||||
Impairments of goodwill | $ 440 | 440 | ||
Accumulated goodwill impairment losses | $ 440 | |||
Zulily | Trade Names | ||||
Indefinite-lived Intangible Assets [Line Items] | ||||
Impairment of intangible assets | $ 580 | |||
HSN, Inc. | ||||
Indefinite-lived Intangible Assets [Line Items] | ||||
Impairments of goodwill | $ 0 | |||
HSN, Inc. | Trade Names | ||||
Indefinite-lived Intangible Assets [Line Items] | ||||
Impairment of intangible assets | $ 147 | $ 30 |