Property and Equipment and Investment Properties - Rental Income from the above Investment Properties (Details) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Rental income from investment property, net of direct operating expense [abstract]
Rental income from the investment properties	₩ 136,493	₩ 123,313

The amount of rental income arising from investment property recognised in profit or loss. [Refer: Investment property]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2022-03-24
-Paragraph 75
-Subparagraph f
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2022-en-r&anchor=para_75_f_i&doctype=Standard
-URIDate 2022-03-24

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