XML 21 R6.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2019 | Nov. 30, 2018
Statement Of Income And Comprehensive Income [Abstract] |  |  |  |
Pension and other postretirement benefit liability adjustments, Tax | $ 1,015 | $ 1,108 | $ 2,119 | $ 2,090
Unrealized gain on securities and other, Tax | 0 | 124 | 1 | 543
Unrealized gain on derivatives, Tax | $ 305 | $ 234 | $ 274 | $ 249

X
- Definition Other comprehensive income loss available for sale securities and other tax. + References No definition available. + Details
Name: | rpm_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAndOtherTax
Namespace Prefix: | rpm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other comprehensive income (loss), unrealized gain on derivatives, tax. + References No definition available. + Details
Name: | rpm_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesTax
Namespace Prefix: | rpm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration