| (a) | Operating segments |
An operating segment is a component of the Group that engages in business activities from which it may earn revenues and incur expenses, including revenues and expenses that relate to transactions with any of the Group’s other components. All operating segments’ operating results are reviewed regularly by the Group’s CEO to make decisions about resources to be allocated to the segment and assess its performance, and for which discrete financial information is available.
Segment results that are reported to the CEO include items directly attributable to a segment as well as those that can be allocated on a reasonable basis. The Group’s reportable segments consist of banking, credit card, securities, life insurance, and others.