3 This Interpretation addresses how the effect of the following events that change the measurement of an existing decommissioning, restoration or similar liability should be accounted for:

(a) a change in the estimated outflow of resources embodying economic benefits (eg cash flows) required to settle the obligation;

(b) a change in the current market-based discount rate as defined in paragraph 47 of IAS 37 (this includes changes in the time value of money and the risks specific to the liability); and

(c) an increase that reflects the passage of time (also referred to as the unwinding of the discount).