XML 42 R52.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Derivatives and Hedging - Additional Information (Detail) | Oct. 31, 2017 USD ($) CrossCurrencySwap | Nov. 30, 2019 USD ($) ForwardContract | May 31, 2019 USD ($) ForwardContract | Oct. 31, 2017 EUR (€) CrossCurrencySwap
--- | --- | --- | --- | ---
Derivatives Not Designated as Hedges |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Number of foreign currency forward contract held | ForwardContract |  | 1 | 1 |
Forward Contracts Held to Purchase Foreign Currencies | Derivatives Not Designated as Hedges |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Notional amount | $ |  | $ 61,000,000.0 | $ 38,700,000 |
Net Investment Hedge |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Number of cross currency swaps executed | CrossCurrencySwap | 2 |  |  | 2
Notional amount | $ 100,000,000 |  |  | € 85,250,000
Derivative instruments maturity date | 2022-11 |  |  |

X
- Definition Derivative instruments maturity date. + References No definition available. + Details
Name: | rpm_DerivativeInstrumentsMaturityDate
Namespace Prefix: | rpm_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Derivative number of foreign currency forward contract hold. + References No definition available. + Details
Name: | rpm_DerivativeNumberOfForeignCurrencyForwardContractHold
Namespace Prefix: | rpm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of cross currency swaps executed. + References No definition available. + Details
Name: | rpm_NumberOfCrossCurrencySwapsExecuted
Namespace Prefix: | rpm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=rpm_ForwardContractsHeldToPurchaseForeignCurrenciesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_NetInvestmentHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |