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Operating Segments Information (Tables)

12 Months Ended

Dec. 31, 2020

Text Block [Abstract]

Geographic Information

1)

Geographic information


		December 31,				December 31,
		2019				2020
		NT$				NT$
Noncurrent Assets		(In Millions)				(In Millions)

Taiwan		$	1,344,352.6			$	1,569,080.4
United States			8,850.1				9,455.5
China			38,586.6				34,456.4
Europe, the Middle East and Africa			186.2				174.2
Japan			27.1				327.2
Others			3.1				3.0


		$	1,392,005.7			$	1,613,496.7

Major Customers Representing at Least 10% of Net Revenue

2)

Major custom

e

rs representing at least 10% of net revenue


		Years Ended December 31
		2018								2019								2020
		Amount				%				Amount				%				Amount				%
		NT$								NT$								NT$
		(In Millions)								(In Millions)								(In Millions)

Customer A		$	224,690.7				22			$	247,213.3				23			$	336,775.5				25
Customer B			83,885.6				8				152,876.9				14				167,390.8				12