Nature of Business and Basis of Presentation - Additional Information (Detail) - Irish Operations [Member] - USD ($) $ in Millions |
3 Months Ended | |
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Jul. 31, 2017 |
Jul. 31, 2016 |
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| Nature Of Business And Basis Of Presentation [Line Items] | ||
| Undistributed earnings of foreign subsidiaries | $ 58.6 | |
| Deferred tax liability related to the foreign income | $ 16.3 | |
| Charge to deferred tax liability related to the foreign income | $ 14.7 |
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- Definition Nature of business and basis of presentation. No definition available.
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- Definition Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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