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Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2024

Property, plant and equipment not subject to operating leases [member]

Disclosure of detailed information about property, plant and equipment [line items]

Summary of Property, Plant and Equipment


	Land and Land Improvements				Buildings				Machinery and Equipment				Office Equipment				Equipment under Installation and Construction in Progress				Total
		NT$				NT$				NT$				NT$				NT$				NT$
		(In Millions)				(In Millions)				(In Millions)				(In Millions)				(In Millions)				(In Millions)

Cost

Balance at January 1, 2022		$	6,488.2			$	576,597.8			$	3,984,749.2			$	76,154.2			$	593,155.7			$	5,237,145.1
Additions			816.4				59,443.8				330,782.7				10,325.3				738,523.9				1,139,892.1
Disposals or retirements			-				(236.8	)			(25,846.4	)			(1,709.2	)			-				(27,792.4	)
Transfers to assets subject to operating leases			-				-				(65.8	)			-				-				(65.8	)
Effect of exchange rate changes			357.2				1,242.1				6,322.9				257.7				5,163.0				13,342.9


Balance at December 31, 2022		$	7,661.8			$	637,046.9			$	4,295,942.6			$	85,028.0			$	1,336,842.6			$	6,362,521.9


Accumulated depreciation and impairment

Balance at January 1, 2022		$	499.8			$	306,165.3			$	2,903,539.4			$	51,826.6			$	-			$	3,262,031.1
Additions			1.4				35,982.4				380,216.2				9,216.3				-				425,416.3
Disposals or retirements			-				(225.6	)			(24,706.7	)			(1,708.6	)			-				(26,640.9	)
Transfers to assets subject to operating leases			-				-				(40.3	)			-				-				(40.3	)
Impairment			-				-				-				-				790.7				790.7
Effect of exchange rate changes			54.9				1,016.3				5,872.3				205.8				-				7,149.3


Balance at December 31, 2022		$	556.1			$	342,938.4			$	3,264,880.9			$	59,540.1			$	790.7			$	3,668,706.2


Carrying amounts at December 31, 2022		$	7,105.7			$	294,108.5			$	1,031,061.7			$	25,487.9			$	1,336,051.9			$	2,693,815.7


Cost

Balance at January 1, 2023		$	7,661.8			$	637,046.9			$	4,295,942.6			$	85,028.0			$	1,336,842.6			$	6,362,521.9
Additions (deductions)			-				182,033.3				1,120,848.7				18,205.5				(423,568.7	)			897,518.8
Disposals or retirements			-				(585.5	)			(28,525.9	)			(3,325.3	)			-				(32,436.7	)
Transfers from right-of-use assets			-				-				4.4				-				-				4.4
Transfers from assets subject to operating leases			-				-				80.4				-				-				80.4
Transfers to assets subject to operating leases			-				-				(71.1	)			-				-				(71.1	)
Effect of exchange rate changes			(39.8	)			(671.7	)			(3,293.5	)			(83.1	)			(4,984.1	)			(9,072.2	)


Balance at December 31, 2023		$	7,622.0			$	817,823.0			$	5,384,985.6			$	99,825.1			$	908,289.8			$	7,218,545.5


Accumulated depreciation and impairment

Balance at January 1, 2023		$	556.1			$	342,938.4			$	3,264,880.9			$	59,540.1			$	790.7			$	3,668,706.2
Additions			1.3				45,052.9				463,825.3				10,586.7				-				519,466.2
Disposals or retirements			-				(583.0	)			(27,407.7	)			(3,324.2	)			-				(31,314.9	)
Transfers from right-of-use assets			-				-				1.9				-				-				1.9
Transfers from assets subject to operating leases			-				-				53.5				-				-				53.5
Transfers to assets subject to operating leases			-				-				(45.7	)			-				-				(45.7	)
Effect of exchange rate changes			0.7				(394.4	)			(2,299.7	)			(52.6	)			-				(2,746.0	)


Balance at December 31, 2023		$	558.1			$	387,013.9			$	3,699,008.5			$	66,750.0			$	790.7			$	4,154,121.2


Carrying amounts at December 31, 2023		$	7,063.9			$	430,809.1			$	1,685,977.1			$	33,075.1			$	907,499.1			$	3,064,424.3


Cost

Balance at January 1, 2024		$	7,622.0			$	817,823.0			$	5,384,985.6			$	99,825.1			$	908,289.8			$	7,218,545.5
Additions			5,542.9				141,097.1				490,799.0				13,719.2				147,349.2				798,507.4
Disposals or retirements			(278.3	)			(119.8	)			(34,140.5	)			(8,334.2	)			-				(42,872.8	)
Transfers from assets subject to operating leases			-				-				56.5				-				-				56.5
Transfers to assets subject to operating leases			-				(197.9	)			-				-				-				(197.9	)
Effect of exchange rate changes			167.6				531.4				10,502.1				224.7				24,645.2				36,071.0


Balance at December 31, 2024		$	13,054.2			$	959,133.8			$	5,852,202.7			$	105,434.8			$	1,080,284.2			$	8,010,109.7


	Land and Land Improvements			Buildings				Machinery and Equipment				Office Equipment				Equipment under Installation and Construction in Progress			Total
		NT$			NT$				NT$				NT$				NT$			NT$
		(In Millions)			(In Millions)				(In Millions)				(In Millions)				(In Millions)			(In Millions)

Accumulated depreciation and impairment
Balance at January 1, 2024		$	558.1		$	387,013.9			$	3,699,008.5			$	66,750.0			$	790.7		$	4,154,121.2
Additions			13.6			52,205.0				585,635.2				12,047.5				-			649,901.3
Disposals or retirements			-			(114.7	)			(30,823.2	)			(8,332.5	)			-			(39,270.4	)
Transfers from assets subject to operating leases			-			-				53.8				-				-			53.8
Transfers to assets subject to operating leases			-			(14.4	)			-				-				-			(14.4	)
Impairment			-			47.5				1,103.0				-				-			1,150.5
Effect of exchange rate changes			36.8			1,231.9				7,905.6				215.0				-			9,389.3


Balance at December 31, 2024		$	608.5		$	440,369.2			$	4,262,882.9			$	70,680.0			$	790.7		$	4,775,331.3


Carrying amounts at December 31, 2024		$	12,445.7		$	518,764.6			$	1,589,319.8			$	34,754.8			$	1,079,493.5		$	3,234,778.4

Property plant and equipment including subject and not subject to operating leases [member]

Disclosure of detailed information about property, plant and equipment [line items]

Summary of Property, Plant and Equipment


	December 31, 2022			December 31, 2023			December 31, 2024
		NT$			NT$			NT$
		(In Millions)			(In Millions)			(In Millions)

Assets used by the Company		$	2,693,815.7		$	3,064,424.3		$	3,234,778.4
Assets subject to operating leases			21.3			50.7			201.7


		$	2,693,837.0		$	3,064,475.0		$	3,234,980.1