Under IAS 19 (2011), remeasurements of defined benefit obligations and plan assets — including actuarial gains and losses — are recognised immediately and in full in Other Comprehensive Income (OCI) and are never recycled to profit or loss.
IAS 19 Remeasurements in OCI represent the most significant departure from the pre-2011 standard, which permitted the so-called "corridor approach." Here is how the mechanics operate under the current standard: