0000789460 2021-05-21 2021-05-21 0000789460 false 8-K 2021-05-21 WORLD FUEL SERVICES CORPORATION FL 1-9533 59-2459427 9800 N.W. 41st Street, Miami, FL 33178 305 428-8000 false false false false Common Stock, par value $0.01 per share INT NYSE false