Share-Based Compensation - Unrecognized Compensation Expense and Period for Recognition (Details) $ in Millions |
6 Months Ended |
|---|---|
|
Aug. 03, 2019
USD ($)
| |
| Restricted Stock Units (RSUs) [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized compensation expense related to unvested RSUs | $ 20.0 |
| Period for recognition | 1 year 10 months 24 days |
| Stock Options [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized compensation expense related to stock options | $ 2.6 |
| Period for recognition | 2 years 1 month 6 days |