Revenue Valuation Allowances and Reserves (Details) - USD ($) $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Jan. 01, 2018 |
Dec. 31, 2015 |
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| Valuation and Qualifying Accounts Disclosure [Line Items] | |||||
| Customer returns | $ 2,213 | $ 1,811 | $ 1,815 | ||
| Allowance for Sales Returns [Member] | |||||
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||||
| Valuation Allowances and Reserves, Balance | 242 | 119 | 93 | $ 243 | $ 103 |
| Additions- charged to earnings | 2,213 | 982 | 1,010 | ||
| Deductions | $ (2,214) | (979) | $ (1,020) | ||
| HSN, Inc. | Allowance for Sales Returns [Member] | |||||
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||||
| Valuation Allowances and Reserves, Reserves of Businesses Acquired | $ 23 | ||||
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- Definition The impact to the Statement of Operations due to customer returns. No definition available.
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, acquired in a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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