XML 52 R41.htm IDEA: XBRL DOCUMENT
v3.21.2

Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Parenthetical) (Detail) - MAP to Growth - Severance and Benefit Costs (Credits) - Position | 3 Months Ended
--- | ---
Aug. 31, 2021 | Aug. 31, 2020
Construction Products Segment |  |
Restructuring Cost And Reserve [Line Items] |  |
Number of positions eliminated | 5 | 9
Performance Coatings Segment |  |
Restructuring Cost And Reserve [Line Items] |  |
Number of positions eliminated | 2 | 39
Consumer Segment |  |
Restructuring Cost And Reserve [Line Items] |  |
Number of positions eliminated |  | 3
Specialty Products Group ("SPG") Segment |  |
Restructuring Cost And Reserve [Line Items] |  |
Number of positions eliminated | 16 | 28

X
- Definition The number of positions eliminated during the period as a result of restructuring activities. + References No definition available. + Details
Name: | us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rpm_ConstructionProductsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=rpm_MarginAccelerationPlanToGrowthPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rpm_PerformanceCoatingsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rpm_ConsumerProductsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rpm_SpecialtyProductsGroupSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |