IDEMITSU KOSAN CO. LTD revenue for the last year amounted to 53.39 B EUR, the most of which — 43.36 B EUR — came from its highest performing source at the moment, Fuel Oil, the year earlier bringing 51.42 B EUR. The greatest contribution to the revenue figure was made by Japan — last year it brought IDEMITSU KOSAN CO. LTD 38.78 B EUR, and the year before that — 46.51 B EUR.