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Cover Page
Aug. 07, 2019
Cover page.  
Document Type 8-K
Document Period End Date Aug. 07, 2019
Entity File Number 1-13948
Entity Registrant Name SCHWEITZER-MAUDUIT INTERNATIONAL, INC.
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 62-1612879
Entity Address, Address Line One 100 North Point Center East,
Entity Address, Address Line Two Suite 600
Entity Address, City or Town Alpharetta,
Entity Address, State or Province GA
Entity Address, Postal Zip Code 30022
City Area Code 800
Local Phone Number 514-0186
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001000623
Amendment Flag false