Name:	grvy_ContractLiabilitiesDecreaseBySatisfactionOfPerformanceObligationsUnderMicroTransactionAndSubscriptionRevenue
Namespace Prefix:	grvy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Contract liabilities decrease by satisfaction of performance obligations under royalties and license fees.

No definition available.

Name:	grvy_ContractLiabilitiesDecreaseBySatisfactionOfPerformanceObligationsUnderRoyaltiesAndLicenseFees
Namespace Prefix:	grvy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Contract liabilities increase by micro-transaction and subscription revenue.

No definition available.

Name:	grvy_ContractLiabilitiesIncreaseByMicroTransactionAndSubscriptionRevenue
Namespace Prefix:	grvy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Contract liabilities increase by royalties and license fees.

No definition available.

Name:	grvy_ContractLiabilitiesIncreaseByRoyaltiesAndLicenseFees
Namespace Prefix:	grvy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Contract Liabilities Increase by Website and Application Development Contract

No definition available.

Name:	grvy_ContractLiabilitiesIncreaseByWebsiteAndApplicationDevelopmentContract
Namespace Prefix:	grvy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Decrease through termination of contract, contract liabilities.

No definition available.

Name:	grvy_DecreaseThroughTerminationOfContractContractLiabilities
Namespace Prefix:	grvy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

Name:	grvy_RevenueFromContractsWithCustomersAbstract
Namespace Prefix:	grvy_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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.

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

Name:	ifrs-full_ContractLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The decrease in contract liabilities resulting from the performance obligation being satisfied. [Refer: Contract liabilities; Performance obligations [member]]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 118
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_118_e&doctype=Standard
-URIDate 2021-03-24