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Investment Properties (Tables)

12 Months Ended

Dec. 31, 2024

Disclosure of detailed information about investment property [abstract]

Summary of Investment Properties


		December 31
		2023				2024
		NT$				NT$
		(In Millions)
Carrying amount
Investment properties		$	9,805			$	12,302


				Investment Properties
				NT$
				(In Millions)
Cost
Balance on January 1, 2022				$	10,663
Additions					18
Reclassification					99
Balance on December 31, 2022				$	10,780
Accumulated depreciation and impairment
Balance on January 1, 2022				$	(1,000	)
Depreciation expense					(44	)
Reversal of impairment loss					107
Reclassification					(39	)
Balance on December 31, 2021				$	(976	)
Balance on December 31, 2021, net				$	9,804
Cost
Balance on January 1, 2023				$	10,780
Additions					54
Reclassification					328
Balance on December 31, 2023				$	11,162
Accumulated depreciation and impairment
Balance on January 1, 2023				$	(976	)
Depreciation expense					(45	)
Impairment loss					(336	)
Balance on December 31, 2023				$	(1,357	)
Balance on December 31, 2023, net				$	9,805
Cost
Balance on January 1, 2024				$	11,162
Additions					4
Reclassification					2,427
Balance on December 31, 2024				$	13,593
Accumulated depreciation and impairment
Balance on January 1, 2024				$	(1,357	)
Depreciation expense					(45	)
Reversal of impairment loss					139
Reclassification					(28	)
Balance on December 31, 2024				$	(1,291	)
Balance on December 31, 2024, net				$	12,302

Estimated Service Lives of Investment Properties

Depreciation expense is computed using the straight-line method over the following estimated service lives:


Land improvements		15-30 years
Buildings
Main buildings		8-60 years
Other building facilities		10-35 years

Key Assumptions and Fair Values of Investment Properties

The fair values of the Company’s investment properties as of December 31, 2023 and 2024 were determined by Level 3 fair value measurements inputs based on the appraisal reports conducted by independent appraisers. Those appraisal reports are based on the comparison approach, income approach or cost approach. Key assumptions and the fair values were as follows:


			December 31
			2023			2024
			NT$			NT$
			(In Millions)
Fair value		$	$24,237		$	$41,285
Overall capital interest rate			1.43%-5.51%			1.47%-5.81%
Profit margin ratio			10%-20%			12%-20%
Discount rate			—			0%-10%
Capitalization rate			0.23%-2.28%			1.12%-2.13%

Summary of Future Aggregate Lease Collection under Operating Lease for Freehold Plant, Property and Equipment

The future aggregate lease collection under operating lease for investment properties is as follows:


		December 31
		2023				2024
		NT$				NT$
		(In Millions)
Year 1		$	168			$	274
Year 2			157				248
Year 3			134				217
Year 4			105				192
Year 5			83				190
Onwards			435				1,306
		$	1,082			$	2,427