International Financial Reporting Standards in Depth, Volume 1: Theory and Practice

This standard should be applied in the preparation and presentation of consolidated financial statements for a group of enterprises under the control of a parent.
IAS 27 should also be applied to accounting for investments in subsidiaries in a parent's separate financial statements.
The standard does not deal with:
methods of business combinations (see IFRS 3);
accounting for investments in associates (see IAS 28);
accounting for investments in joint ventures (see IAS 31).
Control: power to govern the accounting and financial policies of another entity so as to obtain benefits from its activities.
Subsidiary: an entity that is controlled by another (the parent).
Parent: an entity that has one or more subsidiaries.
Consolidated financial statements: financial statements of a group presented as those of a single economic entity.
Minority interest: portion of the net results and net assets of a subsidiary attributable to interests not owned directly or indirectly by the parent.
A parent should present consolidated financial statements in which it consolidates its investments in subsidiaries in accordance with IAS 27.
However, a parent need not present consolidated financial statements if, and only, if:
the parent itself is a 100% owned subsidiary or is partially owned by another entity whose owners have been informed and do not object to the parent not preparing consolidated accounts; and
the parent's debt or equity instruments are not traded...