Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Net Income	$ 73,856us-gaap_ProfitLoss	$ 68,414us-gaap_ProfitLoss	$ 178,695us-gaap_ProfitLoss	$ 175,303us-gaap_ProfitLoss
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(91,222)	24,205	(112,488)	10,791
Pension and other postretirement benefit liability adjustments (net of tax of $2,573; $1,379; $4,165; $2,811, respectively)	4,985	2,211	7,914	5,135
Unrealized gain (loss) on securities (net of tax of $(1,276); $2,882; $(1,155); $2,062, respectively)	(2,567)	6,401	(2,491)	4,962
Unrealized gain (loss) on derivatives (net of tax of $75; $(324); $33 and $(278), respectively)	283	(994)	217	(885)
Total other comprehensive (loss) income	(88,521)	31,823	(106,848)	20,003
Total Comprehensive (Loss) Income	(14,665)	100,237	71,847	195,306
Less: Comprehensive Income Attributable to Noncontrolling Interests	3,008	9,507	5,388	17,134
Comprehensive (Loss) Income Attributable to RPM International Inc. Stockholders	$ (17,673)us-gaap_ComprehensiveIncomeNetOfTax	$ 90,730us-gaap_ComprehensiveIncomeNetOfTax	$ 66,459us-gaap_ComprehensiveIncomeNetOfTax	$ 178,172us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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