Provisions - Changes in Provisions (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2019
Disclosure of other provisions [abstract]
Applicable period from the date of purchase for warranties covering defective products	18~36 months

The description of types of warranties and related obligations in contracts with customers.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2019-01-01
-Paragraph 119
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2019-en-r&anchor=para_119_e&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_DescriptionOfTypesOfWarrantiesAndRelatedObligations
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration