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v2.4.1.9

Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share, Calculated using Treasury Method and Two-Class Method (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 28, 2015 | Feb. 28, 2014 | Feb. 28, 2015 | Feb. 28, 2014
Numerator for earnings per share: |  |  |  |  |  |  |  |
Net income attributable to RPM International Inc. stockholders | $ (57,348)us-gaap_NetIncomeLoss |  | $ 16,221 us-gaap_NetIncomeLoss |  | $ 111,497 us-gaap_NetIncomeLoss |  | $ 182,881 us-gaap_NetIncomeLoss |
Less: Allocation of earnings and dividends to participating securities |  |  | (299)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic |  | (2,347)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic |  | (3,897)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic |
Net income available to common shareholders - basic | (57,348)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 15,922 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 109,150 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 178,984 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
Add: Undistributed earnings reallocated to unvested shareholders |  |  |  |  | 2 us-gaap_UndistributedEarnings |  | 15 us-gaap_UndistributedEarnings |
Add: Income effect of contingently issuable shares |  |  |  |  | 4,026 us-gaap_DilutiveSecuritiesEffectOnBasicEarningsPerShareOther |  | 1,202 us-gaap_DilutiveSecuritiesEffectOnBasicEarningsPerShareOther |
Net income available to common shareholders - diluted | $ (57,348)us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |  | $ 15,922 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |  | $ 113,178 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |  | $ 180,201 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |
Denominator for basic and diluted earnings per share: |  |  |  |  |  |  |  |
Basic weighted average common shares | 129,795 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 129,453 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 130,039 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 129,407 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |
Average diluted options |  |  |  |  | 1,080 us-gaap_IncrementalCommonSharesAttributableToWrittenPutOptions |  | 999 us-gaap_IncrementalCommonSharesAttributableToWrittenPutOptions |
Additional shares issuable assuming conversion of convertible securities |  |  |  |  | 3,876 us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities |  | 1,163 us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities |
Total shares for diluted earnings per share | 129,795 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | [1],[2] | 129,453 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | [1],[2] | 134,995 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | [1],[2] | 131,569 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | [1],[2]
Earnings Per Share of Common Stock Attributable to RPM International Inc. Stockholders: |  |  |  |  |  |  |  |
Basic Earnings Per Share of Common Stock | $ (0.44)us-gaap_EarningsPerShareBasic |  | $ 0.12 us-gaap_EarningsPerShareBasic |  | $ 0.84 us-gaap_EarningsPerShareBasic |  | $ 1.38 us-gaap_EarningsPerShareBasic |
Diluted Earnings Per Share of Common Stock | $ (0.44)us-gaap_EarningsPerShareDiluted |  | $ 0.12 us-gaap_EarningsPerShareDiluted |  | $ 0.84 us-gaap_EarningsPerShareDiluted |  | $ 1.37 us-gaap_EarningsPerShareDiluted |
[1] | For the three month period ended February 28, 2015, basic weighted-average shares outstanding and basic net income available to common shareholders under the treasury method are used in calculating basic and diluted earnings per share as a result of the reported loss for the period. For the three month period ended February 28, 2014, basic weighted-average shares outstanding and basic net income available to common shareholders are used in calculating diluted earnings per share under the two-class method, as that method resulted in the most dilutive earnings per share.
[2] | For the nine month periods ended February 28, 2015 and 2014, approximately 2,995,000 and 3,019,000 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted EPS for those periods, as the effect would have been anti-dilutive.

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