Income Taxes	3 Months Ended
Income Taxes	Jul. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our consolidated interim effective tax rate is based on our expected annual operating income, statutory tax rates, and income tax laws in the various jurisdictions where we operate. Significant or unusual items, including adjustments to accruals for tax uncertainties, are recognized in the fiscal quarter in which the related event or a change in judgment occurs. The effective tax rate of 11.6% for the three months ended July 31, 2020, was lower than the expected tax rate of 21.0% on ordinary income for the full fiscal year primarily due to a deferred tax benefit related to an intercompany transfer of assets and excess tax benefits related to stock-based compensation. The effective tax rate of 11.6% for the three months ended July 31, 2020, was lower than the effective tax rate of 18.2% for the three months ended July 31, 2019, primarily due to a deferred tax benefit related to an intercompany transfer of assets. Our expected tax rates include current fiscal year additions for existing tax contingency items. Historically, we have asserted that the undistributed earnings of our foreign subsidiaries are reinvested indefinitely outside the United States. Therefore, no income taxes have been provided for any outside basis differences inherent in these subsidiaries other than those subject to the one-time repatriation tax. During fiscal 2020, we changed our indefinite reinvestment assertion with respect to current year earnings and prior year undistributed earnings for select foreign subsidiaries (but not for their other outside basis differences). No further changes have been made to our indefinite reinvestment assertion.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.