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Share-Based Compensation - Unrecognized Compensation Expense and Period for Recognition (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended |
|---|---|
|
May 02, 2015
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|
| Stock Options [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized share-based compensation expense | $ 5.5 |
| Period for recognition | 1 year 7 months 1 day |
| Restricted Stock and Restricted Stock Units [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized share-based compensation expense | $ 27.0 |
| Period for recognition | 2 years 1 month 25 days |