Designation Of Financial Assets Or Liabilities Of IFRS Standards 1 : If an entity uses fair value in its opening IFRS statement of financial position as deemed cost for an item of property, plant and equipment, an investment property, an intangible asset or a right-of-use asset , the entity’s first IFRS financial statements shall disclose, for each line item in the opening IFRS statement of financial position:
(a) the aggregate of those fair values; and
(b) the aggregate adjustment to the carrying amounts reported under previous GAAP.

 if an entity uses a deemed cost in its opening IFRS statement of financial position for an investment in a subsidiary, joint venture or associate in its separate financial statements, the entity’s first IFRS separate financial statements shall disclose:
(a) the aggregate deemed cost of those investments for which deemed cost is their previous GAAP carrying amount;
(b) the aggregate deemed cost of those investments for which deemed cost is fair value; and
(c) the aggregate adjustment to the carrying amounts reported under previous GAAP.

To know more about IFRS please read the following article -> IFRS Details