Stock-Based Compensation - Additional Information (Details) $ / shares in Units, shares in Millions, $ in Millions |
9 Months Ended |
|---|---|
|
Sep. 30, 2021
USD ($)
$ / shares
shares
| |
| Stock-based compensation | |
| Total unrecognized compensation cost related to unvested Awards | $ | $ 121 |
| Weighted average period of recognition related to unvested equity awards (in years) | 2 years 7 months 6 days |
| Common Class A | |
| Stock-based compensation | |
| Shares reserved for future issuance upon exercise of stock options | 37.3 |
| Common Class B | |
| Stock-based compensation | |
| Shares reserved for future issuance upon exercise of stock options | 1.9 |
| Restricted Stock Units (RSUs) | Common Class A | |
| Stock-based compensation | |
| RSUs Outstanding | 12.9 |
| RSUs/RSAs GDFV | $ / shares | $ 9.76 |
| Restricted Stock | Common Class B | |
| Stock-based compensation | |
| RSUs Outstanding | 1.1 |
| RSUs/RSAs GDFV | $ / shares | $ 13.65 |
| Qurate Retail Employees and Directors | Restricted Stock Units (RSUs) | Common Class A | |
| Stock-based compensation | |
| RSUs/RSAs GDFV | $ / shares | $ 12.87 |