Income Taxes and Other Taxes	9 Months Ended
Income Taxes and Other Taxes	Feb. 28, 2021
Income Tax And Non Income Tax Disclosure [Abstract]
Income Taxes and Other Taxes	INCOME TAXES AND OTHER TAXES Tax Legislation Updates In response to the COVID-19 pandemic, many governments have enacted or are contemplating additional measures to provide aid and economic stimulus. These measures may include deferring the due dates of tax payments or other changes to their income and non-income-based tax laws as well as providing direct government assistance through grants and forgivable loans. On March 27, 2020, the U.S. government enacted the Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”). The CARES Act, among other things, includes provisions relating to refundable payroll tax credits, deferment of employer-side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property. The Company expects to benefit from certain provisions in the CARES Act, including the provision to carry back net operating losses generated in the U.S. to previous periods which were taxed at the higher 35% federal corporate tax rate and provisions related to the Employee Retention Credit, which was created by the CARES Act to encourage entities to keep employees on their payroll despite experiencing economic hardship due to the COVID-19 pandemic. The Company is deferring employer-side social security payments which have resulted in a current liability of $2.8 and a non-current liability of $4.8 as of February 28, 2021. Internationally, the Company is applying for employee retention credits when applicable and appropriate. On December 22, 2017, the Tax Cuts and Jobs Act was signed into law. The Tax Cuts and Jobs Act, among other things, reduced the U.S. federal corporate tax rate from 35% to 21% and imposed a new minimum tax on Global Intangible Low-Taxed Income ("GILTI") earned by foreign subsidiaries. On July 20, 2020, final regulations were issued for GILTI which include a high-tax exception for income earned by foreign subsidiaries if the foreign tax rate is in excess of 90% of the U.S. tax rate of 21%. While the Company does not anticipate a material impact on the overall income tax provision, the final regulations, specifically the high-tax exception, will reduce taxable income. Income Taxes In calculating the provision for income taxes on an interim basis, the Company uses an estimate of the annual effective tax rate based upon currently known facts and circumstances and applies that rate to its year-to-date earnings or losses. The Company’s effective tax rate is based on expected income and statutory tax rates and takes into consideration permanent differences between financial statement and tax return income applicable to the Company in the various jurisdictions in which the Company operates. The effect of discrete items, such as changes in estimates, changes in enacted tax laws or rates or tax status, and unusual or infrequently occurring events, is recognized in the interim period in which the discrete item occurs. The accounting estimates used to compute the provision for income taxes may change as new events occur, additional information is obtained or as the result of new judicial interpretations or regulatory or tax law changes. The Company's interim effective tax rate, inclusive of discrete items, was 36.4% for the three month period ended February 28, 2021 and 29.0% for the nine month period ended February 28, 2021. The Company recorded a benefit in the third quarter of fiscal 2021 related to the finalization of the fiscal 2020 U.S. income tax return, which was partially offset by an estimated increase in GILTI for fiscal 2021, primarily associated with the Company's results in the UK. The Company, including its domestic subsidiaries, files a consolidated U.S. income tax return, and also files tax returns in various states and other local jurisdictions. Also, certain subsidiaries of the Company file income tax returns in foreign jurisdictions. The Company is routinely audited by various tax authorities and the fiscal 2015 through fiscal 2019 tax years remain open. The Company has been notified by the IRS that there will be an examination of the income tax return for fiscal 2015. Non-income Taxes The Company is subject to tax examinations for sales-based taxes. A number of these examinations are ongoing and, in certain cases, have resulted in assessments from taxing authorities. The Company assesses sales tax contingencies for each jurisdiction in which it operates, considering all relevant facts including statutes, regulations, case law and experience. Where a sales tax liability with respect to a jurisdiction is probable and can be reliably estimated for such jurisdiction, the Company has made accruals for these matters which are reflected in the Company’s Condensed Consolidated Financial Statements. These amounts are included in the Financial Statements in Selling, general and administrative expenses. Future developments relating to the foregoing could result in adjustments being made to these accruals.