Revenue from Contracts with Customers - Details of Amortization Costs Recognized as Cost of Revenues (Details) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [abstract]
Incremental costs of obtaining a contract recognized as cost of revenues	₩ 1,277	₩ 998	₩ 2,036

The amount of amortisation for assets recognised from the costs incurred to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers; Amortisation expense]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 128
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_128_b&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_AmortisationAssetsRecognisedFromCostsIncurredToObtainOrFulfilContractsWithCustomers
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration