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OTHER EXPENSE (INCOME), NET (Tables) | 6 Months Ended
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Nov. 30, 2012
Other Expense (Income), Net | Other expense (income), net, consists of the following components:
|  | Three Months Ended November 30, |  |  | Six Months Ended November 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
(In thousands) |  |  |  |  |  |  |  |  |  |  |  |
Royalty (income), net |  | $ | (433 | ) |  | $ | (424 | ) |  | $ | (727 | ) |  | $ | (748 | )
Loss on Kemrock conversion option |  |  | 847 |  |  |  | — |  |  |  | 9,030 |  |  |  | — |
Loss (income) related to unconsolidated equity affiliates |  |  | 9,280 |  |  |  | (5,743 | ) |  |  | 40,813 |  |  |  | (6,222 | )
Other expense (income), net |  | $ | 9,694 |  |  | $ | (6,167 | ) |  | $ | 49,116 |  |  | $ | (6,970 | )

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- Definition Tabular disclosure of other income and expense, including royalty income, net, equity in income from unconsolidated affiliates and net gain or loss on derivatives. + References No definition available. + Details
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Namespace Prefix: | rpm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration