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Income Taxes (Details) $ in Millions | 3 Months Ended
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Jul. 31, 2021 USD ($)
Income Taxes [Abstract] |
Decrease in unrecognized tax benefits | $ 101

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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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