Derivative financial instruments and hedging
Derivatives are initially recognised and subsequently re-measured at fair value. The method of recognising the re-measurement depends on whether the derivative is designated as a hedging instrument, and if so, the nature of the item being hedged.
Changes in the fair value of derivatives designated as cash flow hedges are recorded in other comprehensive income and the unrealised gains and losses reserve to the extent that the hedges are effective. When the hedged item is recognised, the cumulative gains and losses on the related hedging instrument are reclassified to the income statement.
Changes in the fair value of derivatives designated as net investment hedges are recorded in other comprehensive income and the currency translation reserve to the extent that the hedges are effective. The cumulative gains and losses remain in equity until a foreign operation is sold, at which point they are reclassified to the income statement.
Changes in the fair value of derivatives which have either not been designated as hedging instruments or relate to the ineffective portion of hedges are recognised immediately in the income statement.
Documentation outlining the measurement and effectiveness of any hedging arrangement is maintained throughout the life of the hedge relationship.
Interest arising from currency derivatives and interest rate swaps is recorded in either financial income or expenses over the term of the agreement, unless the accounting treatment for the hedging relationship requires the interest to be taken to reserves.