IIDA GROUP HOLDINGS CO. LTD. revenue for the last year amounted to 10.00 B EUR, the most of which — 2.78 B EUR — came from its highest performing source at the moment, Ichi Construction, the year earlier bringing 2.90 B EUR. The greatest contribution to the revenue figure was made by Japan — last year it brought IIDA GROUP HOLDINGS CO. LTD. 10.00 B EUR, and the year before that — 10.30 B EUR.