Document and Entity Information - USD ($) |
12 Months Ended | ||
|---|---|---|---|
May 31, 2025 |
Jul. 21, 2025 |
Nov. 30, 2024 |
|
| Cover [Abstract] | |||
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Period End Date | May 31, 2025 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Trading Symbol | RPM | ||
| Entity Registrant Name | RPM INTERNATIONAL INC. | ||
| Entity Central Index Key | 0000110621 | ||
| Current Fiscal Year End Date | --05-31 | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Small Business | false | ||
| ICFR Auditor Attestation Flag | true | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Emerging Growth Company | false | ||
| Entity Shell Company | false | ||
| Entity Common Stock, Shares Outstanding | 128,376,265 | ||
| Entity Public Float | $ 17,629,392,156 | ||
| Entity File Number | 1-14187 | ||
| Entity Tax Identification Number | 02-0642224 | ||
| Entity Address, Address Line One | 2628 Pearl Road | ||
| Entity Address, City or Town | Medina | ||
| Entity Address, State or Province | OH | ||
| Entity Address, Postal Zip Code | 44256 | ||
| City Area Code | 330 | ||
| Local Phone Number | 273-5090 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Security Exchange Name | NYSE | ||
| Title of 12(b) Security | Common Stock, par value $0.01 | ||
| Documents Incorporated by Reference | DOCUMENTS INCORPORATED BY REFERENCE Portions of the definitive Proxy Statement to be used in connection with the Registrant’s Annual Meeting of Stockholders to be held on October 2, 2025 (the “2025 Proxy Statement”) are incorporated by reference into Part III of this Annual Report on Form 10-K. Except as otherwise stated, the information contained in this Annual Report on Form 10-K is as of May 31, 2025. |
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| Auditor Name | Deloitte & Touche LLP | ||
| Auditor Location | Cleveland, Ohio | ||
| Auditor Firm ID | 34 | ||
| Auditor Opinion | We have audited the accompanying consolidated balance sheets of RPM International Inc. and subsidiaries (the "Company") as of May 31, 2025 and 2024, the related consolidated statements of income, comprehensive income, cash flows, and stockholders’ equity, for each of the three years in the period ended May 31, 2025, and the related notes and schedule listed in the Index at Item 15 (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of May 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended May 31, 2025, in conformity with accounting principles generally accepted in the United States of America. We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of May 31, 2025, based on criteria established in Internal Control— Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated July 24, 2025, expressed an unqualified opinion on the Company's internal control over financial reporting. |