Material Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2025

Disclosure of significant accounting policies [abstract]

Schedule of Estimated Useful Lives of Property, Plant and Equipment

Depreciation of all property and equipment, except for land, is calculated using the straight-line method to allocate their cost, net of their residual values, over their estimated useful lives as follows:

	Useful Life
Buildings	5 – 40 years
Structures	5 – 40 years
Machinery and equipment (Telecommunications equipment and others)	2 – 40 years
Vehicles	4 – 10 years
Tools	3 – 6 years
Office equipment	2 – 8 years

Schedule of Amortization of Intangible Assets With Limited Useful Life

The Group amortizes intangible assets with a limited useful life using the straight-line method over the following periods:

	Useful Life
Development costs	3 – 10 years
Software	3 – 10 years
Frequency usage rights	5 – 10 years
Others1	1 – 50 years

1Membership rights (condominium membership and golf membership), subscription rights, broadcast license, facility usage rights and transportation license included in others are classified as intangible assets with indefinite useful life.