Document and Entity Information
Apr. 20, 2020
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Apr. 20, 2020
Entity Registrant Name WORLD FUEL SERVICES CORPORATION
Entity Incorporation, State or Country Code FL
Entity File Number 001-09533
Entity Tax Identification Number 59-2459427
Entity Address, Address Line One 9800 N.W. 41st Street
Entity Address, City or Town Miami
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33178
City Area Code 305
Local Phone Number 428-8000
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 0000789460
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol INT
Security Exchange Name NYSE