Risk Management and Derivatives (Narrative) (Details) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Apr. 29, 2017 |
Apr. 30, 2016 |
Jan. 30, 2016 |
|
| Derivative [Line Items] | |||
| Derivative, Maturity Date | May 04, 2018 | ||
| Forward Contracts [Member] | |||
| Derivative [Line Items] | |||
| Derivative, Maturity Date | May 04, 2018 | Apr. 28, 2017 | Feb. 28, 2018 |