Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Parenthetical) (Detail) - MAP to Growth - Severance and Benefit Costs (Credits) - Position	3 Months Ended		9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Construction Products Segment
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated		3	16	24
Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated	1	5	4	55
Consumer Segment
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated		0		3
Specialty Products Group ("SPG") Segment
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated	2	3	18	27
Corporate/Other Segment
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated			1