Restructuring - Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Parenthetical) (Details) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2024	May 31, 2023	May 31, 2022
Restructuring Cost And Reserve [Line Items]
Restructuring Expense		$ 30,008	$ 15,465	$ 6,276
Impairment of indefinite-lived assets			2,500
MAP 2025
Restructuring Cost And Reserve [Line Items]
Restructuring Expense		30,008	11,660
MAP 2025 | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Restructuring Expense		4,555	2,537
MAP 2025 | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Restructuring Expense		7,438	3,685
MAP 2025 | Performance Coatings Segment | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Restructuring Expense	[1]	4,555	2,537
MAP 2025 | Performance Coatings Segment | Other Restructuring Costs | Trade Names
Restructuring Cost And Reserve [Line Items]
Impairment of indefinite-lived assets		$ 3,300	$ 2,500

[1] Of the $4.6 million of other restructuring costs incurred during the year ended May 31, 2024, $3.3 million is associated with the impairment of an indefinite-lived tradename. The $2.5 million of other restructuring costs incurred during the year ended May 31, 2023, is associated with the impairment of an indefinite-lived tradename. See Note C, "Goodwill and Other Intangible Assets," of the Consolidated Financial Statements below for further description.