Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 228,554	$ 201,313
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net of tax	(3,772)	8,853
Pension and other postretirement benefit liability adjustments, net of tax	(142)	3,164
Unrealized gain (loss) on securities, net of tax	633	(257)
Total other comprehensive (loss) income	(3,281)	11,760
Total Comprehensive Income	225,273	213,073
Less: Comprehensive Income Attributable to Noncontrolling Interests	881	245
Comprehensive Income Attributable to RPM International Inc. Stockholders	$ 224,392	$ 212,828