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Pension and Other Postretirement Benefits Assumptions (Details)
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9 Months Ended | |
|---|---|---|
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Apr. 30, 2013
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Apr. 30, 2012
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Pension Plan
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| Defined Benefit Plans and Other Postretirement Benefit Plans | ||
| Discount rate for net periodic benefit cost | 3.75% | 5.25% |
| Rate of increase in compensation levels | 3.50% | 4.00% |
| Long-term expected rate of return on assets | 7.50% | 7.50% |
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Postretirement Health Plan
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| Defined Benefit Plans and Other Postretirement Benefit Plans | ||
| Discount rate for net periodic benefit cost | 3.75% | 5.25% |
| Rate of increase in compensation levels | 0.00% | 0.00% |
| Long-term expected rate of return on assets | 0.00% | 0.00% |