Restructuring - Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Parenthetical) (Details) - USD ($) $ in Thousands		3 Months Ended
		Aug. 31, 2023	Aug. 31, 2022
Restructuring Cost and Reserve [Line Items]
Current Year Charges		$ 6,498	$ 1,354
MAP 2025
Restructuring Cost and Reserve [Line Items]
Current Year Charges		6,498
MAP 2025 | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges		4,555
MAP 2025 | Performance Coatings Segment
Restructuring Cost and Reserve [Line Items]
Current Year Charges		5,416
MAP 2025 | Performance Coatings Segment | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges	[1]	4,555
MAP 2025 | Performance Coatings Segment | Tradename | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Impairment of indefinite-lived assets		$ 3,300

[1] Of the $4.6 million of other restructuring costs, $3.3 million is associated with the impairment of an indefinite-lived tradename described above.