Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		May 31, 2022	May 31, 2021	May 31, 2020
Income Statement [Abstract]
Net Sales	[1]	$ 6,707,728	$ 6,106,288	$ 5,506,994
Cost of Sales		4,274,675	3,701,129	3,414,139
Gross Profit		2,433,053	2,405,159	2,092,855
Selling, General and Administrative Expenses		1,788,284	1,664,026	1,548,653
Restructuring Expense		6,276	18,106	33,108
Interest Expense		87,928	85,400	101,003
Investment Expense (Income), Net		7,595	(44,450)	(9,739)
(Gain) on Sales of Assets, Net		(51,983)
Other (Income) Expense, Net		(11,846)	13,639	12,066
Income Before Income Taxes		606,799	668,438	407,764
Provision for Income Taxes		114,333	164,938	102,682
Net Income		492,466	503,500	305,082
Less: Net Income Attributable to Noncontrolling Interests		985	857	697
Net Income Attributable to RPM International Inc. Stockholders		$ 491,481	$ 502,643	$ 304,385
Average Number of Shares of Common Stock Outstanding:
Basic		127,948	128,334	128,468
Diluted	[2]	129,580	128,927	129,974
Earnings per Share of Common Stock Attributable to RPM International Inc. Stockholders:
Basic		$ 3.81	$ 3.89	$ 2.35
Diluted		$ 3.79	$ 3.87	$ 2.34

[1] It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.

[2] For the years ended May 31, 2022, 2021 and 2020, approximately 655,000, 362,016 and 340,000 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.