Recent Accounting Standards (Policies)	6 Months Ended
Recent Accounting Standards (Policies)	Oct. 31, 2021
Recent Accounting Standards [Abstract]
Recently Adopted and Issued Accounting Standards	Recently Adopted Accounting Standards Simplifying the Accounting for Income Taxes In December 2019, the FASB issued Accounting Standards Update (ASU) 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” This ASU is intended to simplify various aspects related to accounting for income taxes, eliminates certain exceptions within Topic 740, “Income Taxes” and clarifies certain aspects of the current guidance to promote consistent application. We adopted ASU 2019-12 on May 1, 2021. The adoption did not have a material impact on our consolidated financial statements at the time of adoption. The impact in the future would depend on any changes in tax laws and the applicable enactment dates. In accordance with ASU 2019-12, the enactment date is when any effects are recognized in the consolidated financial statements. Recently Issued Accounting Standards Accounting for Contract Assets and Contract Liabilities from Contracts with Customers In October 2021, the FASB issued ASU 2021-08, “Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers”. This ASU requires that an acquirer recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with ASC 606 “Revenue from Contracts with Customers” (Topic 606) as if it had originated the contracts. Generally, this would result in an acquirer recognizing and measuring the acquired contract assets and contract liabilities consistent with how they were recognized and measured in the acquiree’s financial statements if the acquiree prepared financial statements in accordance with US GAAP. This standard is effective for us on May 1, 2023, including interim periods within the fiscal year. Early adoption is permitted. The standard is applied prospectively to business combinations occurring on or after the effective date of the amendments. The impact will be based on future business combinations after we adopt the standard. Convertible Debt Instruments, Derivatives and EPS In August 2020, the FASB issued ASU 2020-06, “Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40)”. This ASU reduces the number of accounting models for convertible debt instruments and convertible preferred stock. As well as amend the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions. In addition, this ASU improves and amends the related earnings-per-share (EPS) guidance. This standard is effective for us on May 1, 2022, including interim periods within the fiscal year. Adoption is either a modified retrospective method or a fully retrospective method of transition. We are currently assessing the impact the new guidance will have on our consolidated financial statements. Reference Rate Reform In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” In January 2021, the FASB clarified the scope of that guidance with the issuance of ASU 2021-01, “Reference Rate Reform: Scope.” This ASU provides optional guidance for a limited period of time to ease the burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. This would apply to companies meeting certain criteria that have contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. This standard is effective for us immediately and may be applied prospectively to contract modifications made and hedging relationships entered into or evaluated on or before December 31, 2022. We are currently assessing the impact the new guidance will have on our consolidated financial statements