Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
Net (Loss) Income	$ (78,952)us-gaap_ProfitLoss	$ 16,911us-gaap_ProfitLoss	$ 99,743us-gaap_ProfitLoss	$ 192,214us-gaap_ProfitLoss
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(79,275)	(12,146)	(191,763)	(1,355)
Pension and other postretirement benefit liability adjustments (net of tax of $2,497; $1,993; $6,225; $4,751, respectively)	6,511	3,826	14,425	8,961
Unrealized (loss) gain on securities (net of tax of $(1,560); $(998); $(2,715); $961, respectively)	(3,488)	(2,314)	(5,979)	2,648
Unrealized gain (loss) on derivatives (net of tax of $85; $(159); $119 and $(437), respectively)	420	(484)	637	(1,369)
Total other comprehensive (loss) income	(75,832)	(11,118)	(182,680)	8,885
Total Comprehensive (Loss) Income	(154,784)	5,793	(82,937)	201,099
Less: Comprehensive (Loss) Income Attributable to Noncontrolling Interests	(21,728)	7,241	(16,340)	24,375
Comprehensive (Loss) Income Attributable to RPM International Inc. Stockholders	$ (133,056)us-gaap_ComprehensiveIncomeNetOfTax	$ (1,448)us-gaap_ComprehensiveIncomeNetOfTax	$ (66,597)us-gaap_ComprehensiveIncomeNetOfTax	$ 176,724us-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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