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v2.4.0.8

Reconciliation of Statutory Federal Income Tax Rate to Effective Consolidated Tax Rate (Detail) | 12 Months Ended
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Apr. 30, 2014 | Apr. 30, 2013 | Apr. 30, 2012
Income Taxes [Line Items] |  |  |
U.S. federal statutory income tax rate | 35.00% | 35.00% | 35.00%
Foreign source income, net of credits generated | 2.00% | 0.60% | 3.00%
Foreign tax rates differential | (4.70%) | (3.70%) | (2.90%)
COLI increase, net | (2.90%) | (4.80%) | (2.70%)
Conclusion of U.S. federal tax audit | (2.70%) |  |
Adjustment to repatriation plan | (0.60%) | (3.20%) | (1.70%)
State income taxes, net of federal benefit | 1.50% | 5.70% | 4.00%
Adjustments for valuation allowance | (1.40%) | (0.40%) | (0.70%)
Non-deductible business acquisition transaction costs |  | 1.30% |
Expense disallowances | 0.60% | 1.10% | 0.80%
Change in uncertain tax positions | 1.10% | 1.90% |
Other | 0.90% | 1.30% | 0.30%
Effective income tax rate | 28.80% | 34.80% | 35.10%

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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