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Deferred Compensation And Retirement Plans (Weighted-Average Assumptions Used In Calculating The Benefit Obligations) (Detail)
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Apr. 30, 2013
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Apr. 30, 2012
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Apr. 30, 2011
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Apr. 30, 2010
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Deferred Compensation Plan
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| Defined Benefit Plan Disclosure [Line Items] | ||||
| Discount rate, beginning of year | 3.12% | 3.79% | 4.94% | 5.61% |
| Discount rate, end of year | 3.12% | 3.79% | 4.94% | 5.61% |
| Rate of compensation increase | 0.00% | 0.00% | 0.00% | |
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Pension Plans, Defined Benefit
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| Defined Benefit Plan Disclosure [Line Items] | ||||
| Discount rate, beginning of year | 3.12% | 3.79% | 4.94% | 5.61% |
| Discount rate, end of year | 3.12% | 3.79% | 4.94% | 5.61% |
| Rate of compensation increase | 0.00% | 0.00% | 0.00% |
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- Definition
The interest rate used to adjust for the time value of money for the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expected rate of compensation increases (for pay-related plans). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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