Stock-Based Compensation (Unvested Restricted Stock Activity) (Details) - Restricted Stock [Member] shares in Thousands |
3 Months Ended |
|---|---|
|
Apr. 29, 2017
$ / shares
shares
| |
| Number of shares | |
| Unvested at January 28, 2017 (in shares) | shares | 5,563 |
| Awarded (in shares) | shares | 1,103 |
| Released (in shares) | shares | (1,327) |
| Forfeited (in shares) | shares | (20) |
| Unvested at April 29, 2017 (in shares) | shares | 5,319 |
| Weighted average grant date fair value | |
| Unvested at January 28, 2017 (in dollars per share) | $ / shares | $ 43.19 |
| Awarded (in dollars per share) | $ / shares | 65.75 |
| Released (in dollars per share) | $ / shares | 38.23 |
| Forfeited (in dollars per share) | $ / shares | 51.64 |
| Unvested at April 29, 2017 (in dollars per share) | $ / shares | $ 49.82 |