Share-Based Compensation - Unrecognized Compensation Expense and Period for Recognition (Details) $ in Millions |
3 Months Ended |
|---|---|
|
May 04, 2019
USD ($)
| |
| Restricted Stock Units (RSUs) [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized share-based compensation expense | $ 19.5 |
| Period for recognition | 2 years |
| Stock Options [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized share-based compensation expense | $ 0.4 |
| Period for recognition | 1 year 3 months 10 days |