Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Restructuring Cost And Reserve [Line Items]
Current Year Charges	$ 1,140	$ 3,129	$ 5,128	$ 12,280
MAP to Growth
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,140	3,129	5,128	12,280
Cumulative Costs to Date	116,163		116,163
Total Expected Costs	118,827		118,827
MAP to Growth | Severance and Benefit Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	105	574	1,633	5,187
Cumulative Costs to Date	73,252		73,252
Total Expected Costs	74,411		74,411
MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,035	2,615	3,492	6,424
Cumulative Costs to Date	34,372		34,372
Total Expected Costs	35,847		35,847
MAP to Growth | Other Restructuring Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	(60)	3	669
Cumulative Costs to Date	8,539		8,539
Total Expected Costs	8,569		8,569
MAP to Growth | Construction Products Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	318	860	1,050	3,340
Cumulative Costs to Date	30,896		30,896
Total Expected Costs	31,239		31,239
MAP to Growth | Construction Products Segment | Severance and Benefit Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	(7)	255	(322)	1,829
Cumulative Costs to Date	20,966		20,966
Total Expected Costs	21,066		21,066
MAP to Growth | Construction Products Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	325	665	1,368	1,473
Cumulative Costs to Date	7,948		7,948
Total Expected Costs	8,191		8,191
MAP to Growth | Construction Products Segment | Other Restructuring Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	60	4	38
Cumulative Costs to Date	1,982		1,982
Total Expected Costs	1,982		1,982
MAP to Growth | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	186	383	972	3,281
Cumulative Costs to Date	24,877		24,877
Total Expected Costs	26,396		26,396
MAP to Growth | Performance Coatings Segment | Severance and Benefit Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	65	118	193	1,959
Cumulative Costs to Date	16,552		16,552
Total Expected Costs	17,261		17,261
MAP to Growth | Performance Coatings Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	121	265	779	1,109
Cumulative Costs to Date	7,408		7,408
Total Expected Costs	8,188		8,188
MAP to Growth | Performance Coatings Segment | Other Restructuring Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	0	0	213
Cumulative Costs to Date	917		917
Total Expected Costs	947		947
MAP to Growth | Consumer Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	277	1,311	788	3,781
Cumulative Costs to Date	29,596		29,596
Total Expected Costs	29,815		29,815
MAP to Growth | Consumer Segment | Severance and Benefit Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	(11)	0	797
Cumulative Costs to Date	12,307		12,307
Total Expected Costs	12,307		12,307
MAP to Growth | Consumer Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	277	1,300	788	2,682
Cumulative Costs to Date	12,869		12,869
Total Expected Costs	13,088		13,088
MAP to Growth | Consumer Segment | Other Restructuring Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	0	0	302
Cumulative Costs to Date	4,420		4,420
Total Expected Costs	4,420		4,420
MAP to Growth | Specialty Products Group ("SPG") Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	359	434	805	1,737
Cumulative Costs to Date	15,743		15,743
Total Expected Costs	16,326		16,326
MAP to Growth | Specialty Products Group ("SPG") Segment | Severance and Benefit Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	47	(49)	249	461
Cumulative Costs to Date	8,376		8,376
Total Expected Costs	8,726		8,726
MAP to Growth | Specialty Products Group ("SPG") Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	312	385	557	1,160
Cumulative Costs to Date	6,147		6,147
Total Expected Costs	6,380		6,380
MAP to Growth | Specialty Products Group ("SPG") Segment | Other Restructuring Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	0	(1)	116
Cumulative Costs to Date	1,220		1,220
Total Expected Costs	1,220		1,220
MAP to Growth | Corporate/Other Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	141	1,513	141
Cumulative Costs to Date	15,051		15,051
Total Expected Costs	15,051		15,051
MAP to Growth | Corporate/Other Segment | Severance and Benefit Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Current Year Charges	0	$ 141	1,513	$ 141
Cumulative Costs to Date	15,051		15,051
Total Expected Costs	$ 15,051		$ 15,051