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Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2019 | Nov. 30, 2018
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | $ 4,801 | $ 7,724 | $ 11,423 | $ 27,800
2020 MAP to Growth |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 4,801 | 7,724 | 11,423 | 27,800
Cumulative Costs to Date | 71,247 |  | 71,247 |
Total Expected Costs | 103,433 |  | 103,433 |
2020 MAP to Growth | Severance and Benefit Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 2,729 | 6,533 | 6,515 | 25,595
Cumulative Costs to Date | 48,991 |  | 48,991 |
Total Expected Costs | 72,111 |  | 72,111 |
2020 MAP to Growth | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 1,821 | 1,037 | 4,593 | 1,473
Cumulative Costs to Date | 18,972 |  | 18,972 |
Total Expected Costs | 27,284 |  | 27,284 |
2020 MAP to Growth | Other Asset Write-offs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 251 | 154 | 315 | 732
Cumulative Costs to Date | 3,284 |  | 3,284 |
Total Expected Costs | 4,038 |  | 4,038 |
2020 MAP to Growth | Construction Products Group ("CPG") Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 1,596 | 3,961 | 2,444 | 6,758
Cumulative Costs to Date | 18,232 |  | 18,232 |
Total Expected Costs | 28,894 |  | 28,894 |
2020 MAP to Growth | Construction Products Group ("CPG") Segment | Severance and Benefit Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 1,447 | 3,574 | 1,607 | 5,993
Cumulative Costs to Date | 12,836 |  | 12,836 |
Total Expected Costs | 22,146 |  | 22,146 |
2020 MAP to Growth | Construction Products Group ("CPG") Segment | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 110 | 384 | 798 | 397
Cumulative Costs to Date | 3,767 |  | 3,767 |
Total Expected Costs | 4,597 |  | 4,597 |
2020 MAP to Growth | Construction Products Group ("CPG") Segment | Other Asset Write-offs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 39 | 3 | 39 | 368
Cumulative Costs to Date | 1,629 |  | 1,629 |
Total Expected Costs | 2,151 |  | 2,151 |
2020 MAP to Growth | Performance Coatings Group ("PCG") Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 1,239 | 993 | 3,848 | 6,034
Cumulative Costs to Date | 14,086 |  | 14,086 |
Total Expected Costs | 21,931 |  | 21,931 |
2020 MAP to Growth | Performance Coatings Group ("PCG") Segment | Severance and Benefit Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 431 | 364 | 2,931 | 4,769
Cumulative Costs to Date | 9,344 |  | 9,344 |
Total Expected Costs | 14,765 |  | 14,765 |
2020 MAP to Growth | Performance Coatings Group ("PCG") Segment | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 636 | 483 | 745 | 906
Cumulative Costs to Date | 4,219 |  | 4,219 |
Total Expected Costs | 6,638 |  | 6,638 |
2020 MAP to Growth | Performance Coatings Group ("PCG") Segment | Other Asset Write-offs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 172 | 146 | 172 | 359
Cumulative Costs to Date | 523 |  | 523 |
Total Expected Costs | 528 |  | 528 |
2020 MAP to Growth | Consumer Group ("Consumer") Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 1,124 | 181 | 2,407 | 1,200
Cumulative Costs to Date | 16,502 |  | 16,502 |
Total Expected Costs | 21,801 |  | 21,801 |
2020 MAP to Growth | Consumer Group ("Consumer") Segment | Severance and Benefit Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 780 | 76 | 1,547 | 1,095
Cumulative Costs to Date | 8,925 |  | 8,925 |
Total Expected Costs | 12,424 |  | 12,424 |
2020 MAP to Growth | Consumer Group ("Consumer") Segment | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 344 | 105 | 860 | 105
Cumulative Costs to Date | 7,552 |  | 7,552 |
Total Expected Costs | 9,352 |  | 9,352 |
2020 MAP to Growth | Consumer Group ("Consumer") Segment | Other Asset Write-offs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Cumulative Costs to Date | 25 |  | 25 |
Total Expected Costs | 25 |  | 25 |
2020 MAP to Growth | Specialty Products Group ("Specialty") Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 819 | 1,528 | 2,708 | 3,748
Cumulative Costs to Date | 10,291 |  | 10,291 |
Total Expected Costs | 18,671 |  | 18,671 |
2020 MAP to Growth | Specialty Products Group ("Specialty") Segment | Severance and Benefit Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 48 | 1,458 | 414 | 3,678
Cumulative Costs to Date | 5,750 |  | 5,750 |
Total Expected Costs | 10,640 |  | 10,640 |
2020 MAP to Growth | Specialty Products Group ("Specialty") Segment | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 731 | 65 | 2,190 | 65
Cumulative Costs to Date | 3,434 |  | 3,434 |
Total Expected Costs | 6,697 |  | 6,697 |
2020 MAP to Growth | Specialty Products Group ("Specialty") Segment | Other Asset Write-offs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 40 | 5 | 104 | 5
Cumulative Costs to Date | 1,107 |  | 1,107 |
Total Expected Costs | 1,334 |  | 1,334 |
2020 MAP to Growth | Corporate/Other Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 23 | 1,061 | 16 | 10,060
Cumulative Costs to Date | 12,136 |  | 12,136 |
Total Expected Costs | 12,136 |  | 12,136 |
2020 MAP to Growth | Corporate/Other Segment | Severance and Benefit Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Current Year Charges | 23 | $ 1,061 | 16 | $ 10,060
Cumulative Costs to Date | 12,136 |  | 12,136 |
Total Expected Costs | $ 12,136 |  | $ 12,136 |

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