XML 49 R1.htm IDEA: XBRL DOCUMENT v2.4.1.9
Document and Entity Information Document (USD $)
In Billions, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
May 06, 2015
Dec. 31, 2014
DEI [Abstract]      
Entity Registrant Name SCHWEITZER MAUDUIT INTERNATIONAL INC    
Entity Central Index Key 0001000623    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-Q    
Document Period End Date Mar. 31, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus Q1    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   30,474,314dei_EntityCommonStockSharesOutstanding  
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 1.3dei_EntityPublicFloat