Stock Options and Other Share-Based Awards Stock Options and Other Share-Based Awards (Stock Options Valuations Assumptions) (Details) - Liberty Incentive Plan - QRTEA - Stock options |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Black- Scholes option pricing model valuation assumptions | |||
| Expected volatility | 46.80% | 30.10% | 29.70% |
| Expected term (years) | 5 years 8 months 12 days | 5 years 8 months 12 days | 5 years 2 months 12 days |
| Risk free interest rate | 0.70% | 2.20% | 2.70% |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|