
	Land and Land Improvements			Buildings			Machinery and Equipment			Office Equipment			Assets under Finance Leases			Equipment under Installation and Construction in Progress			Total
	NT$			NT$			NT$			NT$			NT$			NT$			NT$
	(In Millions)			(In Millions)			(In Millions)			(In Millions)			(In Millions)			(In Millions)			(In Millions)
Cost
Balance at January 1, 2015	$	4,036.8		$	269,163.9		$	1,754,170.2		$	27,960.8		$	841.2		$	109,334.7		$	2,165,507.6
Additions		—			26,960.5			142,090.4			3,428.6			—			82,595.3			255,074.8
Disposals or retirements		—			(75.0	)		(5,923.0	)		(1,170.0	)		—			—			(7,168.0	)
Lease agreement modification		—			—			—			—			(824.1	)		—			(824.1	)
Effect of acquisition of subsidiary		—			624.7			1,402.0			447.9			—			176.6			2,651.2
Effect of exchange rate changes		30.6			127.8			1,750.0			32.7			(10.0	)		4.9			1,936.0


Balance at December 31, 2015	$	4,067.4		$	296,801.9		$	1,893,489.6		$	30,700.0		$	7.1		$	192,111.5		$	2,417,177.5


Accumulated depreciation and impairment
Balance at January 1, 2015	$	459.2		$	141,245.9		$	1,188,388.4		$	16,767.9		$	447.4		$	—		$	1,347,308.8
Additions		28.9			16,312.6			199,185.0			3,751.7			25.2			—			219,303.4
Disposals or retirements		—			(74.0	)		(5,585.4	)		(1,125.2	)		—			—			(6,784.6	)
Lease agreement modification		—			—			—			—			(460.4	)		—			(460.4	)
Impairment		—			278.1			2,256.8			10.7			—			—			2,545.6
Effect of exchange rate changes		18.1			147.6			1,612.9			20.9			(5.1	)		—			1,794.4


Balance at December 31, 2015	$	506.2		$	157,910.2		$	1,385,857.7		$	19,426.0		$	7.1		$	—		$	1,563,707.2


Carrying amounts at December 31, 2015	$	3,561.2		$	138,891.7		$	507,631.9		$	11,274.0		$	—		$	192,111.5		$	853,470.3


Cost
Balance at January 1, 2016	$	4,067.4		$	296,801.9		$	1,893,489.6		$	30,700.0		$	7.1		$	192,111.5		$	2,417,177.5
Additions		—			9,113.3			156,874.2			4,584.1			—			195,256.0			365,827.6
Disposals or retirements		—			(13.4	)		(3,094.2	)		(469.2	)		—			—			(3,576.8	)
Reclassification		—			—			—			7.1			(7.1	)		—			—
Effect of exchange rate changes		(18.1	)		(1,497.3	)		(4,401.9	)		(92.4	)		—			(167.8	)		(6,177.5	)


Balance at December 31, 2016	$	4,049.3		$	304,404.5		$	2,042,867.7		$	34,729.6		$	—		$	387,199.7		$	2,773,250.8


Accumulated depreciation and impairment
Balance at January 1, 2016	$	506.2		$	157,910.2		$	1,385,857.7		$	19,426.0		$	7.1		$	—		$	1,563,707.2
Additions		29.4			17,540.5			198,189.4			4,325.7			—			—			220,085.0
Disposals or retirements		—			(7.3	)		(3,049.5	)		(468.4	)		—			—			(3,525.2	)
Reclassification		—			—			—			7.1			(7.1	)		—			—
Effect of exchange rate changes		(10.8	)		(1,094.3	)		(3,620.1	)		(68.7	)		—			—			(4,793.9	)


Balance at December 31, 2016	$	524.8		$	174,349.1		$	1,577,377.5		$	23,221.7		$	—		$	—		$	1,775,473.1


Carrying amounts at December 31, 2016	$	3,524.5		$	130,055.4		$	465,490.2		$	11,507.9		$	—		$	387,199.7		$	997,777.7


	Land and Land Improvements			Buildings			Machinery and Equipment			Office Equipment			Assets under Finance Leases		Equipment under Installation and Construction in Progress			Total
	NT$			NT$			NT$			NT$			NT$		NT$			NT$
	(In Millions)			(In Millions)			(In Millions)			(In Millions)			(In Millions)		(In Millions)			(In Millions)
Cost
Balance at January 1, 2017	$	4,049.3		$	304,404.5		$	2,042,867.7		$	34,729.6		$	—	$	387,199.7		$	2,773,250.8
Additions (Deductions)		—			75,594.7			458,605.8			8,195.9			—		(219,902.5	)		322,493.9
Disposals or retirements		—			(37.0	)		(9,553.0	)		(377.8	)		—		—			(9,967.8	)
Reclassification		—			—			8.8			1.5			—		—			10.3
Effect of disposal of subsidiary		—			—			(51.2	)		(14.8	)		—		(0.5	)		(66.5	)
Effect of exchange rate changes		(66.1	)		(827.6	)		(4,125.8	)		(142.9	)		—		56.8			(5,105.6	)


Balance at December 31, 2017	$	3,983.2		$	379,134.6		$	2,487,752.3		$	42,391.5		$	—	$	167,353.5		$	3,080,615.1


Accumulated depreciation and impairment
Balance at January 1, 2017	$	524.8		$	174,349.1		$	1,577,377.5		$	23,221.7		$	—	$	—		$	1,775,473.1
Additions		27.8			20,844.6			229,985.6			4,938.0			—		—			255,796.0
Disposals or retirements		—			(28.8	)		(8,114.3	)		(377.5	)		—		—			(8,520.6	)
Reclassification		—			—			8.2			1.5			—		—			9.7
Effect of disposal of subsidiary		—			—			(42.8	)		(13.9	)		—		—			(56.7	)
Effect of exchange rate changes		(42.1	)		(718.4	)		(3,765.3	)		(102.9	)		—		—			(4,628.7	)


Balance at December 31, 2017	$	510.5		$	194,446.5		$	1,795,448.9		$	27,666.9		$	—	$	—		$	2,018,072.8


Carrying amounts at December 31, 2017	$	3,472.7		$	184,688.1		$	692,303.4		$	14,724.6		$	—	$	167,353.5		$	1,062,542.3