Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Sales returns | $ 2,434 | $ 1,861 | $ 1,865 | ||||||||
| Sales returns, beginning balance | $ 137 | $ 98 | 137 | 98 | 106 | ||||||
| Additions, charged to earnings | 1,027 | 1,051 | |||||||||
| Deductions | (1,023) | (1,060) | |||||||||
| Acquisition of HSN | 35 | ||||||||||
| Sales returns, ending balance | $ 137 | 137 | 98 | ||||||||
| Stock-based compensation | 88 | 123 | 97 | ||||||||
| Net income | $ 273 | $ 72 | $ 187 | 142 | 887 | $ 119 | $ 111 | 91 | $ 916 | $ 2,441 | $ 1,235 |
| Antidilutive securities | 25,000,000 | 20,000,000 | 13,000,000 | ||||||||
| Basic EPS (WA shares outstanding) | 462,000,000 | 445,000,000 | 476,000,000 | ||||||||
| Potentially dilutive shares | 3,000,000 | 3,000,000 | 5,000,000 | ||||||||
| Diluted EPS (WA shares outstanding) | 465,000,000 | 448,000,000 | 481,000,000 | ||||||||
| Retained Earnings | |||||||||||
| Reclassification | $ (4,239) | $ (405) | |||||||||
| Continuing Operations | |||||||||||
| Net income | 674 | 1,208 | $ 473 | ||||||||
| Liberty Ventures common stock | |||||||||||
| Net income | 242 | 576 | $ 177 | $ 64 | $ 416 | $ 242 | $ 1,233 | $ 762 | |||
| Basic EPS (WA shares outstanding) | 86,000,000 | 86,000,000 | 134,000,000 | ||||||||
| Potentially dilutive shares | 1,000,000 | 1,000,000 | 1,000,000 | ||||||||
| Diluted EPS (WA shares outstanding) | 87,000,000 | 87,000,000 | 135,000,000 | ||||||||
| Liberty Ventures common stock | Maximum | |||||||||||
| Antidilutive securities | 1,000,000 | 1,000,000 | 1,000,000 | ||||||||
| Liberty Ventures common stock | Continuing Operations | |||||||||||
| Net income | $ 101 | $ 781 | $ 263 | ||||||||
| Liberty Ventures common stock | Discontinued Operations | |||||||||||
| Net income | 141 | 452 | $ 499 | ||||||||
| ASU 2014-09 | Adjustment | |||||||||||
| Sales returns, beginning balance | $ 267 | 267 | |||||||||
| Additions, charged to earnings | 2,281 | ||||||||||
| Deductions | (2,282) | ||||||||||
| Sales returns, ending balance | $ 266 | $ 267 | 266 | $ 267 | |||||||
| Net income | $ (11) | ||||||||||
| X | ||||||||||
- Definition Acquisition of HSN No definition available.
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- Definition Additions, charged to earnings No definition available.
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- Definition Apic Defecit Reclassified to Retained Earnings No definition available.
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- Definition Deductions to allowance for sales returns. No definition available.
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- Definition Total deduction from sales during the period arising from goods returned by customers price reductions given by the entity. No definition available.
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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