Restructuring - Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Restructuring Cost and Reserve [Line Items]
Current Year Charges		$ 1,239	$ 1,272	$ 7,737	$ 2,626
MAP 2025
Restructuring Cost and Reserve [Line Items]
Current Year Charges		1,239		7,737
Cumulative Costs to Date		19,397		19,397
Total Expected Costs		51,243		51,243
MAP 2025 | Severance and benefit costs (credits)
Restructuring Cost and Reserve [Line Items]
Current Year Charges		1,117		3,016
Cumulative Costs to Date		11,518		11,518
Total Expected Costs		22,261		22,261
MAP 2025 | Facility Closure and Other Related Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges		122		166
Cumulative Costs to Date		787		787
Total Expected Costs		21,890		21,890
MAP 2025 | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges		0		4,555
Cumulative Costs to Date		7,092		7,092
Total Expected Costs		7,092		7,092
MAP 2025 | Construction Products Segment
Restructuring Cost and Reserve [Line Items]
Current Year Charges		387		802
Cumulative Costs to Date		6,894		6,894
Total Expected Costs		32,414		32,414
MAP 2025 | Construction Products Segment | Severance and benefit costs (credits)
Restructuring Cost and Reserve [Line Items]
Current Year Charges		387		802
Cumulative Costs to Date		6,894		6,894
Total Expected Costs		17,110		17,110
MAP 2025 | Construction Products Segment | Facility Closure and Other Related Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges		0		0
Cumulative Costs to Date		0		0
Total Expected Costs		15,304		15,304
MAP 2025 | Performance Coatings Segment
Restructuring Cost and Reserve [Line Items]
Current Year Charges		306		5,722
Cumulative Costs to Date		9,407		9,407
Total Expected Costs		10,584		10,584
MAP 2025 | Performance Coatings Segment | Severance and benefit costs (credits)
Restructuring Cost and Reserve [Line Items]
Current Year Charges		213		1,044
Cumulative Costs to Date		2,192		2,192
Total Expected Costs		2,369		2,369
MAP 2025 | Performance Coatings Segment | Facility Closure and Other Related Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges		93		123
Cumulative Costs to Date		123		123
Total Expected Costs		1,123		1,123
MAP 2025 | Performance Coatings Segment | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges	[1]	0		4,555
Cumulative Costs to Date	[1]	7,092		7,092
Total Expected Costs	[1]	7,092		7,092
MAP 2025 | Consumer Segment
Restructuring Cost and Reserve [Line Items]
Current Year Charges		35		49
Cumulative Costs to Date		1,177		1,177
Total Expected Costs		1,177		1,177
MAP 2025 | Consumer Segment | Severance and benefit costs (credits)
Restructuring Cost and Reserve [Line Items]
Current Year Charges		35		35
Cumulative Costs to Date		542		542
Total Expected Costs		542		542
MAP 2025 | Consumer Segment | Facility Closure and Other Related Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges		0		14
Cumulative Costs to Date		635		635
Total Expected Costs		635		635
MAP 2025 | Specialty Products Group Segment
Restructuring Cost and Reserve [Line Items]
Current Year Charges		511		1,164
Cumulative Costs to Date		1,969		1,969
Total Expected Costs		7,118		7,118
MAP 2025 | Specialty Products Group Segment | Severance and benefit costs (credits)
Restructuring Cost and Reserve [Line Items]
Current Year Charges		482		1,135
Cumulative Costs to Date		1,940		1,940
Total Expected Costs		2,290		2,290
MAP 2025 | Specialty Products Group Segment | Facility Closure and Other Related Costs
Restructuring Cost and Reserve [Line Items]
Current Year Charges		29		29
Cumulative Costs to Date		29		29
Total Expected Costs		4,828		4,828
MAP 2025 | Corporate/Other Segment
Restructuring Cost and Reserve [Line Items]
Current Year Charges		0		0
Cumulative Costs to Date		(50)		(50)
Total Expected Costs		(50)		(50)
MAP 2025 | Corporate/Other Segment | Severance and benefit costs (credits)
Restructuring Cost and Reserve [Line Items]
Current Year Charges		0		0
Cumulative Costs to Date		(50)		(50)
Total Expected Costs		$ (50)		$ (50)

[1] Of the $4.6 million of other restructuring costs incurred for the six-month period ending November 30, 2023, $3.3 million is associated with the impairment of an indefinite-lived tradename described above.