XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.21.4

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 | 6 Months Ended
--- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2021 | Nov. 30, 2020
Construction Products Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Number of positions eliminated | 11 | 12 | 16 | 21
Performance Coatings Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Number of positions eliminated |  | 11 | 3 | 50
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 |  | 1 | 16 | 24
Number of positions not eliminated |  | 5 |  |
Corporate/Other Segment |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Number of positions eliminated | 1 |  |  |

X
- Definition Restructuring and related cost number of positions not eliminated due to reversal of severance accruals. + References No definition available. + Details
Name: | rpm_RestructuringAndRelatedCostNumberOfPositionsNotEliminatedDueToReversalOfSeveranceAccruals
Namespace Prefix: | rpm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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: |

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