Income Taxes	6 Months Ended
Oct. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our consolidated interim effective tax rate is based upon our expected annual operating income, statutory tax rates, and income tax laws in the various jurisdictions in which we operate. Significant or unusual items, including adjustments to accruals for tax uncertainties, are recognized in the quarter in which the related event or a change in judgment occurs. The effective tax rate of 25.5% for the six months ended October 31, 2017, is lower than the expected tax rate of 28.4% on ordinary income for the full fiscal year, primarily due to (a) a reduction in U.S. tax recorded in the first quarter of fiscal 2018 for certain prior years on foreign exchange gains in non-U.S. entities due to a change in method of accounting for U.S. tax purposes, and (b) the excess tax benefits related to stock-based compensation. Our expected tax rate includes current fiscal year additions for existing tax contingency items.

Income Taxes

6 Months Ended

Oct. 31, 2017

Our consolidated interim effective tax rate is based upon our expected annual operating income, statutory tax rates, and income tax laws in the various jurisdictions in which we operate. Significant or unusual items, including adjustments to accruals for tax uncertainties, are recognized in the quarter in which the related event or a change in judgment occurs. The effective tax rate of 25.5% for the six months ended October 31, 2017, is lower than the expected tax rate of 28.4% on ordinary income for the full fiscal year, primarily due to (a) a reduction in U.S. tax recorded in the first quarter of fiscal 2018 for certain prior years on foreign exchange gains in non-U.S. entities due to a change in method of accounting for U.S. tax purposes, and (b) the excess tax benefits related to stock-based compensation. Our expected tax rate includes current fiscal year additions for existing tax contingency items.