XML 14 R48.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Fair Value Measurements - Additional Information (Detail) | 3 Months Ended |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2012 USD ($) | Aug. 31, 2012 EUR (€) | Aug. 31, 2012 INR | May 31, 2012 INR | Apr. 30, 2012 Conversion option, Kemrock 5.5% bonds | Aug. 31, 2012 Conversion option, Kemrock 5.5% bonds | May 31, 2012 Conversion option, Kemrock 5.5% bonds | Aug. 31, 2012 Unsecured Senior Notes | Aug. 31, 2012 Fair Value, Measurements, Recurring Cross-currency swap USD ($) | May 31, 2012 Fair Value, Measurements, Recurring Cross-currency swap USD ($) | Aug. 31, 2012 Fair Value, Measurements, Recurring Conversion option, Kemrock 5.5% bonds | May 31, 2012 Fair Value, Measurements, Recurring Conversion option, Kemrock 5.5% bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency contracts, fair value of liability |  |  |  |  |  |  |  |  | $ 4,503,000 | $ 2,159,000 |  |
Debt, interest rate |  |  |  |  |  |  |  | 6.70% |  |  |  |
Debt, due date |  |  |  |  |  |  |  | Nov. 01, 2015 |  |  |  |
Effective euro fixed-rate borrowing | 5.31% |  |  |  |  |  |  |  |  |  |  |
Notional principal amount of cross-currency swap | 150,000,000 | 125,000,000 |  |  |  |  |  |  |  |  |  |
Loss on Kemrock conversion option | $ (8,183,000) |  |  |  |  |  |  |  |  |  |  |
Investment in affiliate, interest rate |  |  |  |  | 5.50% | 5.50% | 5.50% |  |  |  | 5.50% | 5.50%
Kemrock common stock market value per share |  |  | 116.6 | 531.0 |  |  |  |  |  |  |  |

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Investment Interest Rate, Percentage + References No definition available. + Details
Name: | rpm_InvestmentInterestRatePercentage
Namespace Prefix: | rpm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price Of Common Stock + References No definition available. + Details
Name: | rpm_PriceOfCommonStock
Namespace Prefix: | rpm_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
Name: | us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant