Equity - Share Based Payment Award Performance Shares Valuation Assumptions (Parenthetical) (Details)	12 Months Ended
Apr. 30, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards granted, vesting period	4 years
PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards granted, vesting period	3 years
PSUs \| Volatility
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards granted, vesting period	3 years

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration