Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jan. 28, 2016 |
Jan. 31, 2016 |
Jan. 31, 2016 |
May. 29, 2015 |
|
| Stockholders' Equity Note [Abstract] | ||||
| Number of shares authorized to be repurchased | 14,000,000.0 | |||
| Stock repurchased during the period (in shares) | 0 | 2,070,000 | ||
| Stock repurchased during the period, value | $ 68.0 | |||
| Average price per share (in usd per share) | $ 32.85 | |||
| Shares with remaining authorization for repurchase under stock repurchase plan (in shares) | 10,900,000.0 | 10,900,000.0 | ||
| Cash dividend declared per common share (in usd per share) | $ 0.170 |