|
Equity (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Oct. 27, 2012
|
Jul. 31, 2010
|
|
| Equity [Abstract] | ||
| Share repurchase program authorized amount | $ 100 | |
| Share repurchase program additional authorized amount | 100 | |
| Stock repurchase program remaining authorized repurchase amount | $ 89.9 |