|
Employee Benefit Plans (Components Of Net Periodic Pension Costs) (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Jul. 31, 2012
|
Jul. 31, 2011
|
Jul. 31, 2010
|
|
| Employee Benefit Plans [Abstract] | |||
| Service cost | $ 15,464 | $ 16,148 | $ 13,184 |
| Interest cost | 19,436 | 19,440 | 19,445 |
| Expected return on assets | (28,114) | (27,538) | (28,390) |
| Transition amount amortization | 216 | 225 | 226 |
| Prior service cost amortization | 509 | 449 | 293 |
| Actuarial loss amortization | 5,696 | 3,962 | 2,864 |
| Net periodic benefit cost | $ 13,207 | $ 12,686 | $ 7,622 |