v2.4.0.8
Document and Entity Information
6 Months Ended
Nov. 30, 2015
Dec. 31, 2015
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Nov. 30, 2015  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q2  
Trading Symbol RPM  
Entity Registrant Name RPM INTERNATIONAL INC/DE/  
Entity Central Index Key 0000110621  
Current Fiscal Year End Date --05-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   132,832,418