Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Aug. 31, 2023	Aug. 31, 2022
Income Statement [Abstract]
Net Sales		$ 2,011,857	$ 1,932,320
Cost of Sales		1,183,240	1,187,849
Gross Profit		828,617	744,471
Selling, General and Administrative Expenses		531,032	485,205
Restructuring Expense		6,498	1,354
Interest Expense		31,818	26,711
Investment (Income) Expense, Net		(12,439)	3,664
Other Expense, Net		2,554	2,416
Income Before Income Taxes		269,154	225,121
Provision for Income Taxes		67,841	55,842
Net Income		201,313	169,279
Less: Net Income Attributable to Noncontrolling Interests		231	266
Net Income Attributable to RPM International Inc. Stockholders		$ 201,082	$ 169,013
Average Number of Shares of Common Stock Outstanding:
Basic		127,633	127,617
Diluted	[1]	128,771	128,161
Earnings per Share of Common Stock Attributable to RPM International Inc. Stockholders:
Basic		$ 1.57	$ 1.31
Diluted		$ 1.56	$ 1.31

[1] For the three months ended August 31, 2023 and 2022, approximately 1,037,000 and 715,000 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted EPS, as the effect would have been anti-dilutive.