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Income Taxes (Schedule Of Components Of Income From Continuing Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Apr. 30, 2018 | Jan. 31, 2018 | Oct. 31, 2017 | Jul. 31, 2017 | Apr. 30, 2017 | Jan. 31, 2017 | Oct. 31, 2016 | Jul. 31, 2016 | Apr. 30, 2018 | Apr. 30, 2017 | Apr. 30, 2016
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Document Fiscal Year Focus |  |  |  |  |  |  |  |  | 2018 |  |
Domestic |  |  |  |  |  |  |  |  | $ 547,101 | $ 535,378 | $ 513,746
Foreign |  |  |  |  |  |  |  |  | 121,631 | 93,909 | 55,733
Income from continuing operations before income taxes | $ 1,231,021 | $ (120,805) | $ (236,265) | $ (205,219) | $ 1,211,903 | $ (150,598) | $ (228,469) | $ (203,549) | $ 668,732 | $ 629,287 | $ 569,479

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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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