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Consolidation, Noncontrolling Interests and Basis of Presentation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Feb. 28, 2013
Noncurrent Liabilities |
Organization And Summary Of Significant Accounting Policies [Line Items] |
Change in accrued loss reserves | $ 25.8
Current Liabilities |
Organization And Summary Of Significant Accounting Policies [Line Items] |
Change in accrued loss reserves | $ (25.8)

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- Details
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Balance Type: | na
Period Type: | duration

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- Definition Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting product liability contingencies (including adjustments for changes in estimates). + References No definition available. + Details
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Namespace Prefix: | rpm_
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Balance Type: | credit
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