Stock Repurchase Program	6 Months Ended
Nov. 30, 2016
Equity [Abstract]
Stock Repurchase Program	NOTE 10 — STOCK REPURCHASE PROGRAM On January 8, 2008, we announced our authorization of a stock repurchase program under which we may repurchase shares of RPM International Inc. common stock at management’s discretion for general corporate purposes. Our current intent is to limit our repurchases only to amounts required to offset dilution created by stock issued in connection with our equity-based compensation plans, or approximately one to two million shares per year. As a result of this authorization, we may repurchase shares from time to time in the open market or in private transactions at various times and in amounts and for prices that our management deems appropriate, subject to insider trading rules and other securities law restrictions. The timing of our purchases will depend upon prevailing market conditions, alternative uses of capital and other factors. We may limit or terminate the repurchase program at any time. During the three and six months ended November 30, 2016, we did not repurchase any shares of our common stock under this program. During the three and six months ended November 30, 2015, we repurchased approximately 100,000 shares and 400,000 shares of our common stock under this program, respectively. These shares of common stock were repurchased during the prior year second quarter and six month period for approximately $4.4 million and $17.2 million, respectively.

NOTE 10 — STOCK REPURCHASE PROGRAM

On January 8, 2008, we announced our authorization of a stock repurchase program under which we may repurchase shares of RPM International Inc. common stock at management’s discretion for general corporate purposes. Our current intent is to limit our repurchases only to amounts required to offset dilution created by stock issued in connection with our equity-based compensation plans, or approximately one to two million shares per year. As a result of this authorization, we may repurchase shares from time to time in the open market or in private transactions at various times and in amounts and for prices that our management deems appropriate, subject to insider trading rules and other securities law restrictions. The timing of our purchases will depend upon prevailing market conditions, alternative uses of capital and other factors. We may limit or terminate the repurchase program at any time. During the three and six months ended November 30, 2016, we did not repurchase any shares of our common stock under this program. During the three and six months ended November 30, 2015, we repurchased approximately 100,000 shares and 400,000 shares of our common stock under this program, respectively. These shares of common stock were repurchased during the prior year second quarter and six month period for approximately $4.4 million and $17.2 million, respectively.