Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Jan. 28, 2017 |
Jan. 30, 2016 |
|
| Accounting Policies [Abstract] | ||
| Number of Days of Payments Due From Bank Included in Balance (in days) | 5 days | |
| Credit Card Receivables | $ 10.2 | $ 13.4 |
| Bank Overdrafts | $ 49.8 | $ 17.0 |