The amount of assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 128
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_128_a&doctype=Standard
-URIDate 2021-03-24

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- Definition

The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 105
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_105&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 116
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_116_a&doctype=Standard
-URIDate 2021-03-24

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

+ References

No definition available.

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- Definition

The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer that is unconditional. A right to consideration is unconditional if only the passage of time is required before payment of that consideration is due.

+ References

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Revenue from Contracts with Customers - Account Receivables, Incremental Costs of Obtaining a Contract, and Contract Liabilities (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [line items]
Accounts receivables	₩ 52,615	₩ 59,761
Incremental costs of obtaining a contract (Prepaid expenses)	861	1,277
Contract liabilities (Deferred revenue)	13,579	13,793	₩ 10,846	₩ 20,074
Micro-transaction and subscription revenue
Disclosure of disaggregation of revenue from contracts with customers [line items]
Contract liabilities (Deferred revenue)	12,622	12,886
Royalties and license fees
Disclosure of disaggregation of revenue from contracts with customers [line items]
Contract liabilities (Deferred revenue)	116	307
Website and application development
Disclosure of disaggregation of revenue from contracts with customers [line items]
Contract liabilities (Deferred revenue)	₩ 841	₩ 600