Related Parties and Others - Details of Significant Cash Transactions of Loans and Collection of Loans Occurred in Normal Course of Business with Related Parties (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
InveniaCoLtd And YasCoLtd [member]
Disclosure of transactions between related parties [Line Items]
Beginning balance	₩ 2,000	₩ 2,750
Decrease		(750)
Ending balance		2,000
INVENIA Co., Ltd. (LIG INVENIA Co., Ltd.) [member]
Disclosure of transactions between related parties [Line Items]
Beginning balance	2,000	2,375
Increase	1,000
Decrease	₩ (3,000)	(375)
Ending balance		2,000
YAS Co., Ltd. [member]
Disclosure of transactions between related parties [Line Items]
Beginning balance		375
Decrease		₩ (375)

The cash outflow for loans and advances made to related parties. [Refer: Related parties [member]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_16&doctype=Standard
-URIDate 2019-03-27

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- Definition

The cash inflow from repayment to the entity of loans and advances made to related parties. [Refer: Related parties [member]]

+ References

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

Loans to related party.

+ References

No definition available.

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