Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2023	May 31, 2022	May 31, 2021
Restructuring Cost And Reserve [Line Items]
Current Year Charges		$ 15,465	$ 6,276	$ 18,106
MAP 2025
Restructuring Cost And Reserve [Line Items]
Current Year Charges		11,660
Cumulative Costs to Date		11,660
Total Expected Costs		22,695
MAP 2025 | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges		8,502
Cumulative Costs to Date		8,502
Total Expected Costs		13,857
MAP 2025 | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges		621
Cumulative Costs to Date		621
Total Expected Costs		6,301
MAP 2025 | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges		2,537
Cumulative Costs to Date		2,537
Total Expected Costs		2,537
MAP 2025 | Construction Products Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges		6,092
Cumulative Costs to Date		6,092
Total Expected Costs		8,815
MAP 2025 | Construction Products Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges		6,092
Cumulative Costs to Date		6,092
Total Expected Costs		8,494
MAP 2025 | Construction Products Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges		0
Cumulative Costs to Date		0
Total Expected Costs		321
MAP 2025 | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges		3,685
Cumulative Costs to Date		3,685
Total Expected Costs		6,692
MAP 2025 | Performance Coatings Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges		1,148
Cumulative Costs to Date		1,148
Total Expected Costs		3,155
MAP 2025 | Performance Coatings Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges		0
Cumulative Costs to Date		0
Total Expected Costs		1,000
MAP 2025 | Performance Coatings Segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	[1]	2,537
Cumulative Costs to Date	[1]	2,537
Total Expected Costs	[1]	2,537
MAP 2025 | Consumer Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges		1,128
Cumulative Costs to Date		1,128
Total Expected Costs		1,128
MAP 2025 | Consumer Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges		507
Cumulative Costs to Date		507
Total Expected Costs		507
MAP 2025 | Consumer Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges		621
Cumulative Costs to Date		621
Total Expected Costs		621
MAP 2025 | SPG Segments
Restructuring Cost And Reserve [Line Items]
Current Year Charges		805
Cumulative Costs to Date		805
Total Expected Costs		6,110
MAP 2025 | SPG Segments | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges		805
Cumulative Costs to Date		805
Total Expected Costs		1,751
MAP 2025 | SPG Segments | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges		0
Cumulative Costs to Date		0
Total Expected Costs		4,359
MAP 2025 | Corporate/Other Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges		(50)
Cumulative Costs to Date		(50)
Total Expected Costs		(50)
MAP 2025 | Corporate/Other Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges		(50)
Cumulative Costs to Date		(50)
Total Expected Costs		$ (50)

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