Hydra SA transfers to an insurer all the obligations of a defined benefit plan, which it thereby settles definitively (case facts). At the settlement date, the present value of the obligation being settled, determined at that date, is 1,000,000; the settlement price comprises plan assets transferred of 850,000 and a direct payment by Hydra of 100,000 (case data). What is the gain or loss on settlement, and when is it recognised?