
	December 31, 2019		December 31, 2020		December 31, 2021
	NT$		NT$		NT$
	(In Millions)		(In Millions)		(In Millions)
Assets used by the Company	$	1,352,313.9	$	1,554,585.9	$	1,975,114.0
Assets subject to operating leases		63.5		1,003.2		4.7


	$	1,352,377.4	$	1,555,589.1	$	1,975,118.7

Assets used by the Company


	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, 2019	$	4,011.4		$	418,151.7		$	2,728,760.2		$	48,382.2		$	172,911.0		$	3,372,216.5
Additions		—			21,448.5			179,798.4			7,415.0			355,621.1			564,283.0
Disposals or retirements		—			(159.0	)		(17,381.6	)		(1,043.3	)		—			(18,583.9	)
Transfers from right-of-use assets		—			—			619.8			—			—			619.8
Effect of disposal of subsidiary		—			—			—			(0.5	)		—			(0.5	)
Effect of exchange rate changes		(19.6	)		(1,366.2	)		(5,173.8	)		(142.0	)		(237.0	)		(6,938.6	)


Balance at December 31, 2019	$	3,991.8		$	438,075.0		$	2,886,623.0		$	54,611.4		$	528,295.1		$	3,911,596.3


Accumulated depreciation and impairment

Balance at January 1, 2019	$	550.6		$	217,899.2		$	2,049,279.0		$	32,525.1		$	—		$	2,300,253.9
Additions		1.6			26,026.6			246,724.2			6,012.5			—			278,764.9
Disposals or retirements		—			(144.4	)		(12,880.8	)		(1,042.1	)		—			(14,067.3	)
Transfers from right-of-use assets		—			—			20.7			—			—			20.7
Reversal of impairment		—			—			(301.4	)		—			—			(301.4	)
Effect of disposal of subsidiary		—			—			—			(0.5	)		—			(0.5	)
Effect of exchange rate changes		(13.5	)		(722.1	)		(4,575.7	)		(76.6	)		—			(5,387.9	)


Balance at December 31, 2019	$	538.7		$	243,059.3		$	2,278,266.0		$	37,418.4		$	—		$	2,559,282.4


Carrying amounts at December 31, 2019	$	3,453.1		$	195,015.7		$	608,357.0		$	17,193.0		$	528,295.1		$	1,352,313.9


Cost

Balance at January 1, 2020	$	3,991.8		$	438,075.0		$	2,886,623.0		$	54,611.4		$	528,295.1		$	3,911,596.3
Additions (deductions)		—			84,882.5			729,943.3			15,112.9			(304,218.0	)		525,720.7
Disposals or retirements		—			(41.5	)		(6,397.3	)		(734.1	)		—			(7,172.9	)
Transfers from assets subject to operating leases		—			23.1			—			—			—			23.1
Transfers to assets subject to operating leases		—			—			(1,199.0	)		—			—			(1,199.0	)
Effect of exchange rate changes		(49.2	)		(491.7	)		(1,964.3	)		(127.5	)		(111.7	)		(2,744.4	)

Balance at December 31, 2020	$	3,942.6		$	522,447.4		$	3,607,005.7		$	68,862.7		$	223,965.4		$	4,426,223.8


Accumulated depreciation and impairment

Balance at January 1, 2020	$	538.7		$	243,059.3		$	2,278,266.0		$	37,418.4		$	—		$	2,559,282.4
Additions		1.5			29,209.1			285,393.6			7,216.9			—			321,821.1
Disposals or retirements		—			(27.9	)		(6,012.9	)		(732.4	)		—			(6,773.2	)
Transfers from assets subject to operating leases		—			8.2			—			—			—			8.2
Transfers to assets subject to operating leases		—			—			(202.6	)		—			—			(202.6	)
Impairment		—			—			10.2			—			—			10.2
Effect of exchange rate changes		(34.1	)		(449.2	)		(1,924.3	)		(100.6	)		—			(2,508.2	)


Balance at December 31, 2020	$	506.1		$	271,799.5		$	2,555,530.0		$	43,802.3		$	—		$	2,871,637.9


Carrying amounts at December 31, 2020	$	3,436.5		$	250,647.9		$	1,051,475.7		$	25,060.4		$	223,965.4		$	1,554,585.9


	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, 2021	$	3,942.6		$	522,447.4		$	3,607,005.7		$	68,862.7		$	223,965.4		$	4,426,223.8
Additions		2,587.2			53,971.3			401,659.0			7,643.0			369,545.8			835,406.3
Disposals or retirements		—			(41.1	)		(26,192.2	)		(333.4	)		—			(26,566.7	)
Transfers from assets subject to operating leases		—			35.5			1,443.6			—			—			1,479.1
Transfers to assets subject to operating leases		—			—			(244.6	)		—			—			(244.6	)
Effect of exchange rate changes		(41.6	)		184.7			1,077.7			(18.1	)		(355.5	)		847.2


Balance at December 31, 2021	$	6,488.2		$	576,597.8		$	3,984,749.2		$	76,154.2		$	593,155.7		$	5,237,145.1


Accumulated depreciation and impairment

Balance at January 1, 2021	$	506.1		$	271,799.5		$	2,555,530.0		$	43,802.3		$	—		$	2,871,637.9
Additions		1.3			34,331.6			368,777.7			8,373.3			—			411,483.9
Disposals or retirements		—			(36.5	)		(22,230.1	)		(332.6	)		—			(22,599.2	)
Transfers from assets subject to operating leases		—			15.1			436.8			—			—			451.9
Transfers to assets subject to operating leases		—			—			(68.3	)		—			—			(68.3	)
Impairment		—			—			274.4			—			—			274.4
Effect of exchange rate changes		(7.6	)		55.6			818.9			(16.4	)		—			850.5


Balance at December 31, 2021	$	499.8		$	306,165.3		$	2,903,539.4		$	51,826.6		$	—		$	3,262,031.1


Carrying amounts at December 31, 2021	$	5,988.4		$	270,432.5		$	1,081,209.8		$	24,327.6		$	593,155.7		$	1,975,114.0

(Concluded)

The significant part of the Company’s buildings includes main plants, mechanical and electrical power equipment and clean rooms, and the related depreciation is calculated using the estimated useful lives of 20 years, 10 years and 10 years, respectively.

In the first quarter of 2019, the Company recognized a reversal of impairment loss of NT$301.4 million due to redeployment of certain idle machinery and equipment. Such reversal of impairment loss was recognized in other operating income and expenses.

In the first quarter of 2021, the Company recognized an impairment loss of NT$274.4 million for certain machinery and equipment that was assessed to have no future use, and the recoverable amount of certain machinery and equipment was nil. Such impairment loss was recognized in other operating income and expenses.

Assets subject to operating leases


	Buildings			Machinery and Equipment			Total
	NT$			NT$			NT$
	(In Millions)			(In Millions)			(In Millions)
Cost

Balance at January 1, 2019	$	562.6		$	—		$	562.6


Balance at December 31, 2019	$	562.6		$	—		$	562.6


Accumulated depreciation

Balance at January 1, 2019	$	474.9		$	—		$	474.9
Additions		24.2			—			24.2


Balance at December 31, 2019	$	499.1		$	—		$	499.1


Carrying amounts at December 31, 2019	$	63.5		$	—		$	63.5


Cost

Balance at January 1, 2020	$	562.6		$	—		$	562.6
Disposals or retirements		(311.9	)		—			(311.9	)
Transfers to assets used by the Company		(23.1	)		—			(23.1	)
Transfers from assets used by the Company		—			1,199.0			1,199.0


Balance at December 31, 2020	$	227.6		$	1,199.0		$	1,426.6


Accumulated depreciation

Balance at January 1, 2020	$	499.1		$	—		$	499.1
Additions		16.3			19.4			35.7
Disposals or retirements		(305.8	)		—			(305.8	)
Transfers to assets used by the Company		(8.2	)		—			(8.2	)
Transfers from assets used by the Company		—			202.6			202.6


Balance at December 31, 2020	$	201.4		$	222.0		$	423.4


Carrying amounts at December 31, 2020	$	26.2		$	977.0		$	1,003.2


Cost

Balance at January 1, 2021	$	227.6		$	1,199.0		$	1,426.6
Transfers to assets used by the Company		(35.5	)		(1,443.6	)		(1,479.1	)
Transfers from assets used by the Company		—			244.6			244.6


Balance at December 31, 2021	$	192.1		$	—		$	192.1


Accumulated depreciation

Balance at January 1, 2021	$	201.4		$	222.0		$	423.4
Additions		1.1			146.5			147.6
Transfers to assets used by the Company		(15.1	)		(436.8	)		(451.9	)
Transfers from assets used by the Company		—			68.3			68.3


Balance at December 31, 2021	$	187.4		$	—		$	187.4


Carrying amounts at December 31, 2021	$	4.7		$	—		$	4.7

Operating leases relate to leases of buildings and leases of machinery and equipment with lease terms ranging between approximately 1 to 5 years. The lessees do not have purchase options to acquire the assets at the expiration of the lease periods.

The maturity analysis of operating lease payments receivable from the buildings and machinery and equipment is as follows:


	December 31, 2020		December 31, 2021
	NT$		NT$
	(In Millions)		(In Millions)

Year 1	$	149.1	$	18.0
Year 2		17.0		—


	$	166.1	$	18.0