Net Income (Tables)

12 Months Ended

Dec. 31, 2020

Analysis Of Income And Expense [Abstract]

Other income and expenses

	Year Ended December 31
	2018			2019			2020
	NT$			NT$			NT$
	(In Millions)
Gain (loss) on disposal of property, plant and equipment	$	142		$	(38	)	$	1,428
Impairment loss on property, plant and equipment		—			(93	)		—
Gain on disposal of investment properties		—			—			151
Reversal of impairment loss on investment properties		19			57			27
Loss on disposal of intangible assets		—			—			(2	)
Impairment loss on intangible assets		(51	)		(9	)		(9	)
Impairment loss on other assets		—			(44	)		—
	$	110		$	(127	)	$	1,595

Other Income

Other income

	Year Ended December 31
	2018		2019		2020
	NT$		NT$		NT$
	(In Millions)
Dividend income	$	396	$	296	$	246
Rental income		70		85		70
Others		234		150		154
	$	700	$	531	$	470

Other Gains and Losses

Other gains and losses

	Year Ended December 31
	2018			2019			2020
	NT$			NT$			NT$
	(In Millions)
Foreign currency exchange gain or loss, net	$	37		$	16		$	(47	)
Gain or loss on disposal of investments accounted for using equity method		—			151			10
Gain (loss) on disposal of financial instruments		6			4			(2	)
Valuation gain or loss on financial assets and liabilities at fair value through profit or loss, net		(21	)		(38	)		(99	)
Others		(68	)		(49	)		(21	)
	$	(46	)	$	84		$	(159	)

Interest Expenses

Interest expenses

	Year Ended December 31
	2018		2019		2020
	NT$		NT$		NT$
	(In Millions)
Interest paid to financial institutions	$	16	$	17	$	79
Interest on lease liabilities		—		85		80
Interest on bonds payable		—		—		46
Others		2		2		1
	$	18	$	104	$	206

Impairment Loss (Reversal of Impairment Loss) on Financial Instruments and Non-financial Assets

Impairment loss (reversal of impairment loss)

	Year Ended December 31
	2018			2019			2020
	NT$			NT$			NT$
	(In Millions)
Contract assets	$	19		$	(2	)	$	1
Trade notes and accounts receivable	$	805		$	(54	)	$	49
Other receivables	$	96		$	(69	)	$	(5	)
Inventories	$	365		$	475		$	1,161
Property, plant and equipment	$	—		$	93		$	—
Investment properties	$	(19	)	$	(57	)	$	(27	)
Intangible assets	$	51		$	9		$	9
Other assets	$	—		$	44		$	—

Depreciation and Amortization Expenses

Depreciation and amortization expenses

	Year Ended December 31
	2018		2019		2020
	NT$		NT$		NT$
	(In Millions)
Property, plant and equipment	$	27,461	$	26,930	$	26,989
Right-of-use assets		—		3,968		3,931
Investment properties		21		25		22
Intangible assets		4,386		4,253		5,424
Incremental costs of obtaining contracts		1,941		1,173		772
Total depreciation and amortization expenses	$	33,809	$	36,349	$	37,138
Depreciation expenses summarized by functions
Operating costs	$	25,996	$	28,957	$	29,056
Operating expenses		1,486		1,966		1,886
	$	27,482	$	30,923	$	30,942
Amortization expenses summarized by functions
Operating costs	$	6,085	$	5,196	$	5,971
Marketing expenses		113		96		100
General and administrative expenses		93		95		82
Research and development expenses		36		39		43
	$	6,327	$	5,426	$	6,196

Employee Benefit Expenses

Employee benefit expenses

	Year Ended December 31
	2018		2019		2020
	NT$		NT$		NT$
	(In Millions)
Post-employment benefit
Defined contribution plans	$	640	$	654	$	708
Defined benefit plans		2,953		2,859		2,001
		3,593		3,513		2,709
Share-based payment
Equity-settled share-based payment		17		2		8
Other employee benefit
Salaries		26,204		25,464		26,630
Insurance		2,740		2,746		2,712
Others		14,470		14,430		12,904
		43,414		42,640		42,246
Total employee benefit expenses	$	47,024	$	46,155	$	44,963
Summary by functions
Operating costs	$	24,367	$	23,587	$	23,005
Operating expenses		22,657		22,568		21,958
	$	47,024	$	46,155	$	44,963

The compensation to the employees and remuneration to the directors of 2018 and 2019 approved by the Board of Directors on March 19, 2019 and February 26, 2020, respectively, were as follows:

	2018		2019
	Cash		Cash
	NT$		NT$
	(In Millions)
Compensation distributed to the employees	$	1,404	$	1,126
Remuneration paid to the directors		38		35