Pledged Assets (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Collateral [Abstract]

Assets Pledged as Collaterals

The following assets are pledged as collaterals for bank loans and custom duties of the imported materials.

	December 31
	2018		2019
	NT$		NT$
	(In Millions)
Property, plant and equipment	$	2,520	$	2,491
Land held under development (included in inventories)		1,999		1,999
Restricted assets (included in other assets - others)		3		3
	$	4,522	$	4,493