Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
Restructuring Cost And Reserve [Line Items]
Current Year Charges	$ 6,276	$ 18,106	$ 33,108
MAP to Growth
Restructuring Cost And Reserve [Line Items]
Current Year Charges	6,276	18,106	33,108
Cumulative Costs to Date	117,311
Total Expected Costs	119,772
MAP to Growth | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,923	9,396	19,747
Cumulative Costs to Date	73,542
Total Expected Costs	75,024
MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	4,350	7,956	8,548
Cumulative Costs to Date	35,230
Total Expected Costs	36,209
MAP to Growth | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	3	754	4,813
Cumulative Costs to Date	8,539
Total Expected Costs	8,539
MAP to Growth | Construction Products Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,651	5,335	8,726
Cumulative Costs to Date	31,497
Total Expected Costs	31,713
MAP to Growth | Construction Products Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	(163)	3,194	6,866
Cumulative Costs to Date	21,125
Total Expected Costs	21,125
MAP to Growth | Construction Products Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,810	2,103	1,508
Cumulative Costs to Date	8,390
Total Expected Costs	8,606
MAP to Growth | Construction Products Segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	4	38	352
Cumulative Costs to Date	1,982
Total Expected Costs	1,982
MAP to Growth | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,147	4,572	9,094
Cumulative Costs to Date	25,052
Total Expected Costs	26,166
MAP to Growth | Performance Coatings Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	324	2,974	6,973
Cumulative Costs to Date	16,683
Total Expected Costs	17,252
MAP to Growth | Performance Coatings Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	823	1,282	1,873
Cumulative Costs to Date	7,452
Total Expected Costs	7,997
MAP to Growth | Performance Coatings Segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	316	248
Cumulative Costs to Date	917
Total Expected Costs	917
MAP to Growth | Consumer Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,038	5,288	9,428
Cumulative Costs to Date	29,846
Total Expected Costs	29,846
MAP to Growth | Consumer Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	1,840	3,089
Cumulative Costs to Date	12,307
Total Expected Costs	12,307
MAP to Growth | Consumer Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,038	3,147	2,245
Cumulative Costs to Date	13,119
Total Expected Costs	13,119
MAP to Growth | Consumer Segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	301	4,094
Cumulative Costs to Date	4,420
Total Expected Costs	4,420
MAP to Growth | SPG Segments
Restructuring Cost And Reserve [Line Items]
Current Year Charges	927	2,720	4,633
Cumulative Costs to Date	15,865
Total Expected Costs	16,996
MAP to Growth | SPG Segments | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	249	1,197	1,592
Cumulative Costs to Date	8,376
Total Expected Costs	9,289
MAP to Growth | SPG Segments | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	679	1,424	2,922
Cumulative Costs to Date	6,269
Total Expected Costs	6,487
MAP to Growth | SPG Segments | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	(1)	99	119
Cumulative Costs to Date	1,220
Total Expected Costs	1,220
MAP to Growth | Corporate/Other Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,513	191	1,227
Cumulative Costs to Date	15,051
Total Expected Costs	15,051
MAP to Growth | Corporate/Other Segment | Severance and benefit costs (credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,513	$ 191	$ 1,227
Cumulative Costs to Date	15,051
Total Expected Costs	$ 15,051