Restructuring - Additional Information (Detail) - USD ($)	3 Months Ended					9 Months Ended
	Feb. 29, 2024		Aug. 31, 2023	Feb. 28, 2023		Feb. 29, 2024		Feb. 28, 2023
Restructuring Cost And Reserve [Line Items]
Loss on sale of Bridgecare services division				$ 24,700,000
Additions charged to expense	$ 6,359,000			4,154,000		$ 14,096,000		$ 6,780,000
MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring costs	$ 0			$ 700,000		$ 0		$ 3,300,000
Restructuring, Incurred Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Additions charged to expense			Additions charged to expense		Additions charged to expense		Additions charged to expense
MAP 2025
Restructuring Cost And Reserve [Line Items]
Total expected costs increased, amount						$ 8,400,000
Additions charged to expense	$ 6,359,000			$ 3,447,000		14,096,000		$ 3,447,000
MAP 2025 | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	581,000			3,110,000		6,303,000		3,110,000
MAP 2025 | Severance and benefit charges
Restructuring Cost And Reserve [Line Items]
Total expected costs increased, amount						4,900,000
Additions charged to expense	6,069,000			910,000		9,085,000		910,000
MAP 2025 | Severance and benefit charges | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	579,000			573,000		1,623,000		573,000
MAP 2025 | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Total expected costs increased, amount						3,500,000
Additions charged to expense	290,000					456,000
MAP 2025 | Facility Closure and Other Related Costs | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	2,000					125,000
MAP 2025 | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	0			2,537,000		4,555,000		2,537,000
MAP 2025 | Other Restructuring Costs | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	$ 0	[1]		$ 2,537,000	[2]	4,555,000	[1]	$ 2,537,000	[2]
MAP 2025 | Other Restructuring Costs | Performance Coatings Segment | Trade name
Restructuring Cost And Reserve [Line Items]
Impairment of indefinite-lived assets						$ 3,300,000
USL Restructuring | Universal Sealants
Restructuring Cost And Reserve [Line Items]
Loss on sale of Bridgecare services division			$ 4,500,000

[1] Of the $4.6 million of other restructuring costs incurred for the nine-month period ending February 29, 2024, $3.3 million is associated with the impairment of an indefinite-lived tradename as described below in Note 4, "Goodwill and Other Intangible Assets," of the Consolidated Financial Statements.

[2] Other restructuring costs are associated with the impairment of an indefinite-lived tradename as described below in Note 4, "Goodwill and Other Intangible Assets," of the Consolidated Financial Statements.