IDEMITSU KOSAN CO.LTD revenue for the last year amounted to 9.46 T JPY, the most of which — 7.40 T JPY — came from its highest performing source at the moment, Fuel Oil, the year earlier bringing 5.22 T JPY. The greatest contribution to the revenue figure was made by Japan — last year it brought IDEMITSU KOSAN CO.LTD 6.70 T JPY, and the year before that — 4.92 T JPY.