Fair Value Measurements (Details) - USD ($) $ in Millions |
Apr. 29, 2017 |
Jan. 28, 2017 |
|---|---|---|
| Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Trading Securities, Fair Value Disclosure | $ 28.0 | $ 24.1 |