Intangible Assets

12 Months Ended

Dec. 31, 2020

17.	INTANGIBLE ASSETS


	Goodwill			Technology License Fees			Software and System Design Costs			Patent and Others			Total
	NT$			NT$			NT$			NT$			NT$
	(In Millions)			(In Millions)			(In Millions)			(In Millions)			(In Millions)

Cost

Balance at January 1, 2018	$	5,648.7		$	10,443.3		$	25,186.3		$	5,716.0		$	46,994.3
Additions		—			533.7			4,601.9			1,969.4			7,105.0
Disposals or retirements		—			—			(186.7	)		(31.2	)		(217.9	)
Effect of exchange rate changes		146.8			(2.5	)		(6.9	)		2.1			139.5


Balance at December 31, 2018	$	5,795.5		$	10,974.5		$	29,594.6		$	7,656.3		$	54,020.9


Accumulated amortization and impairment

Balance at January 1, 2018	$	—		$	7,694.9		$	20,376.7		$	4,747.5		$	32,819.1
Additions		—			1,063.6			2,835.3			522.5			4,421.4
Disposals or retirements		—			—			(186.6	)		(31.2	)		(217.8	)
Effect of exchange rate changes		—			(2.5	)		(1.7	)		0.3			(3.9	)


Balance at December 31, 2018	$	—		$	8,756.0		$	23,023.7		$	5,239.1		$	37,018.8


Carrying amounts at December 31, 2018	$	5,795.5		$	2,218.5		$	6,570.9		$	2,417.2		$	17,002.1


Cost

Balance at January 1, 2019	$	5,795.5		$	10,974.5		$	29,594.6		$	7,656.3		$	54,020.9
Additions		—			4,879.6			3,710.4			647.8			9,237.8
Disposals or retirements		—			—			(260.9	)		—			(260.9	)
Effect of exchange rate changes		(102.1	)		0.9			(20.1	)		(1.2	)		(122.5	)


Balance at December 31, 2019	$	5,693.4		$	15,855.0		$	33,024.0		$	8,302.9		$	62,875.3


Accumulated amortization and impairment

Balance at January 1, 2019	$	—		$	8,756.0		$	23,023.7		$	5,239.1		$	37,018.8
Additions		—			1,066.9			3,747.3			658.2			5,472.4
Disposals or retirements		—			—			(258.6	)		—			(258.6	)
Effect of exchange rate changes		—			0.9			(10.3	)		(0.9	)		(10.3	)


Balance at December 31, 2019	$	—		$	9,823.8		$	26,502.1		$	5,896.4		$	42,222.3


Carrying amounts at December 31, 2019	$	5,693.4		$	6,031.2		$	6,521.9		$	2,406.5		$	20,653.0


Cost

Balance at January 1, 2020	$	5,693.4		$	15,855.0		$	33,024.0		$	8,302.9		$	62,875.3
Additions		—			6,308.9			3,275.8			2,974.8			12,559.5
Disposals or retirements		—			—			(60.5	)		—			(60.5	)
Effect of exchange rate changes		(256.8	)		(2.2	)		(0.3	)		(0.1	)		(259.4	)


Balance at December 31, 2020	$	5,436.6		$	22,161.7		$	36,239.0		$	11,277.6		$	75,114.9


Accumulated amortization and impairment

Balance at January 1, 2020	$	—		$	9,823.8		$	26,502.1		$	5,896.4		$	42,222.3
Additions		—			2,404.5			3,669.2			1,112.5			7,186.2
Disposals or retirements		—			—			(59.9	)		—			(59.9	)
Effect of exchange rate changes		—			(2.1	)		0.3			—			(1.8	)


Balance at December 31, 2020	$	—		$	12,226.2		$	30,111.7		$	7,008.9		$	49,346.8


Carrying amounts at December 31, 2020	$	5,436.6		$	9,935.5		$	6,127.3		$	4,268.7		$	25,768.1

The Company’s goodwill has been tested for impairment at the end of the annual reporting period and the recoverable amount is determined based on the value in use. The value in use was calculated based on the cash flow forecast from the financial budgets covering the future five-year period, and the Company used annual discount rates of 8.0% in both years in its test of impairment as of December 31, 2019 and 2020, to reflect the relevant specific risk in the cash-generating unit.

For the years ended December 31, 2018, 2019 and 2020, the Company did not recognize any impairment loss on goodwill.