Reporting Entity - Summary of Consolidated Subsidiaries (Parenthetical) (Detail) ₩ in Millions	12 Months Ended
Dec. 31, 2022 KRW (₩)
LG DISPLAY FUND I LLC [member]
Disclosure of subsidiaries [line items]
Cash contribution for capital increase in consolidated subsidiaries	₩ 33,137

The cash outflow for changes in ownership interests in subsidiaries that do not result in a loss of control. [Refer: Subsidiaries [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2022-03-24
-Paragraph 42A
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_42A&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2022-03-24
-Paragraph 42B
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_42B&doctype=Standard
-URIDate 2022-03-24

Name:	ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration