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Previously Reported and Restated Balances of Affected Line Items in Financial Statements (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended |  |
--- | --- | --- | ---
Aug. 31, 2012 | Aug. 31, 2011 | May 31, 2012 | May 31, 2011
Consolidated Balance Sheet |  |  |  |  |  |  |
Deferred income taxes | $ 24,253 | [1] |  |  | $ 18,752 |  |
Other accrued liabilities | 195,743 | [1] |  |  | 144,911 |  |
Retained earnings | 685,201 | [1] |  |  | 686,818 |  |
Total RPM International Inc. stockholders' equity | 1,218,992 | [1] |  |  | 1,183,656 |  |
Total equity | 1,362,352 | [1] | 1,435,737 |  | 1,313,983 | [1] | 1,387,368
Consolidated Statements of Income |  |  |  |  |  |  |
Estimated Loss Contingency | 11,418 | [1] |  |  |  |  |
Income before income taxes | 60,644 | [1] | 118,704 |  |  |  |
Provision for Income Taxes | 30,025 | [1] | 35,364 |  |  |  |
Net income | 30,619 | [1] | 83,340 |  |  |  |
Net income attributable to RPM International Inc. Stockholders | 26,665 | [1] | 76,811 |  |  |  |
Earnings Per Share-Basic | $ 0.20 | [1] | $ 0.59 |  |  |  |
Earnings Per Share-Diluted | $ 0.20 | [1],[2] | $ 0.59 | [2] |  |  |
Consolidated Statements of Comprehensive Income |  |  |  |  |  |  |
Net income | 30,619 | [1] | 83,340 |  |  |  |
Total Comprehensive Income | 70,890 | [1] | 72,122 |  |  |  |
Comprehensive Income Attributable to RPM International Inc. Stockholders | 57,857 | [1] | 64,928 |  |  |  |
Consolidated Statement of Cash Flows |  |  |  |  |  |  |
Net income | 30,619 | [1] | 83,340 |  |  |  |
Estimated Loss Contingency | 11,418 | [1] |  |  |  |  |
Deferred income taxes | (2,296) | [1] | (1,374) |  |  |  |
Cash From Operating Activities | 17,734 | [1] | 7,476 |  |  |  |
As Reported |  |  |  |  |  |  |
Consolidated Balance Sheet |  |  |  |  |  |  |
Deferred income taxes | 20,083 |  |  |  |  |  |
Other accrued liabilities | 184,325 |  |  |  |  |  |
Retained earnings | 692,449 |  |  |  |  |  |
Total RPM International Inc. stockholders' equity | 1,226,240 |  |  |  |  |  |
Total equity | 1,369,600 |  |  |  |  |  |
Consolidated Statements of Income |  |  |  |  |  |  |
Income before income taxes | 72,062 |  |  |  |  |  |
Provision for Income Taxes | 34,195 |  |  |  |  |  |
Net income | 37,867 |  |  |  |  |  |
Net income attributable to RPM International Inc. Stockholders | 33,913 |  |  |  |  |  |
Earnings Per Share-Basic | $ 0.26 |  |  |  |  |  |
Earnings Per Share-Diluted | $ 0.26 |  |  |  |  |  |
Consolidated Statements of Comprehensive Income |  |  |  |  |  |  |
Net income | 37,867 |  |  |  |  |  |
Total Comprehensive Income | 78,138 |  |  |  |  |  |
Comprehensive Income Attributable to RPM International Inc. Stockholders | 65,105 |  |  |  |  |  |
Consolidated Statement of Cash Flows |  |  |  |  |  |  |
Net income | 37,867 |  |  |  |  |  |
Deferred income taxes | 1,874 |  |  |  |  |  |
Cash From Operating Activities | 17,734 |  |  |  |  |  |
Adjustments |  |  |  |  |  |  |
Consolidated Balance Sheet |  |  |  |  |  |  |
Deferred income taxes | 4,170 |  |  |  |  |  |
Other accrued liabilities | 11,418 |  |  |  |  |  |
Retained earnings | (7,248) |  |  |  |  |  |
Total RPM International Inc. stockholders' equity | (7,248) |  |  |  |  |  |
Total equity | (7,248) |  |  |  |  |  |
Consolidated Statements of Income |  |  |  |  |  |  |
Estimated Loss Contingency | 11,418 |  |  |  |  |  |
Income before income taxes | (11,418) |  |  |  |  |  |
Provision for Income Taxes | (4,170) |  |  |  |  |  |
Net income | (7,248) |  |  |  |  |  |
Net income attributable to RPM International Inc. Stockholders | (7,248) |  |  |  |  |  |
Earnings Per Share-Basic | $ (0.06) |  |  |  |  |  |
Earnings Per Share-Diluted | $ (0.06) |  |  |  |  |  |
Consolidated Statements of Comprehensive Income |  |  |  |  |  |  |
Net income | (7,248) |  |  |  |  |  |
Total Comprehensive Income | (7,248) |  |  |  |  |  |
Comprehensive Income Attributable to RPM International Inc. Stockholders | (7,248) |  |  |  |  |  |
Consolidated Statement of Cash Flows |  |  |  |  |  |  |
Net income | (7,248) |  |  |  |  |  |
Estimated Loss Contingency | 11,418 |  |  |  |  |  |
Deferred income taxes | $ (4,170) |  |  |  |  |  |
[1] | Restated
[2] | For the quarters ended August 31, 2012 and 2011, approximately 2,954,000 and 2,750,000 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted earnings per share, as the effect would have been anti-dilutive.

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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568447-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568740-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4590271-111686 + Details
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