CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended
	Aug. 31, 2011		Aug. 31, 2010
Net Sales	$ 985,918		$ 894,810
Cost of Sales	576,292		519,384
Gross Profit	409,626		375,426
Selling, General and Administrative Expenses	273,140		253,421
Interest Expense	17,806		16,042
Investment Expense (Income), Net	(24)		(1,977)
Income Before Income Taxes	118,704		107,940
Provision for Income Taxes	35,364		32,946
Net Income	83,340		74,994
Less: Net Income Attributable to Noncontrolling Interests	6,529		5,998
Net Income Attributable to RPM International Inc. Stockholders	$ 76,811		$ 68,996
Average Number of Shares of Common Stock Outstanding:
Basic	128,094		127,787
Diluted	128,628		128,254
Earnings per Share of Common Stock Attributable to RPM International Inc. Stockholders:
Basic	$ 0.59		$ 0.53
Diluted	$ 0.59	[1]	$ 0.53	[1]
Cash Dividends Declared per Share of Common Stock	$ 0.210		$ 0.205

[1] For the quarters ended August 31, 2011 and 2010, approximately 2,750,000 and 1,919,000 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.