Disclosure of revenue from contracts with customers.

No definition available.

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Namespace Prefix:	grvy_
Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Transaction price allocated to remaining performance obligations percentage.

+ References

No definition available.

+ Details

Name:	grvy_TransactionPriceAllocatedToRemainingPerformanceObligationsPercentage
Namespace Prefix:	grvy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of revenue from performance obligations satisfied (or partially satisfied) in previous periods. [Refer: Performance obligations [member]; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 116
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_116_c&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- Definition

The amount of the transaction price allocated to the performance obligations that are unsatisfied (or partially unsatisfied) as of the end of the reporting period. The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties (for example, some sales taxes). [Refer: Performance obligations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2021-01-01
-Paragraph 120
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_120_a&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Data Type:	na
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Period Type:

Revenue from Contracts with Customers - Additional Information (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Revenue From Contracts With Customers [Line Items]
Amount of revenue recognized from previous period's contract liabilities	₩ 13,692
Transaction price allocated to unsatisfied performance obligations	₩ 13,579	₩ 13,793	₩ 10,846
Within a year
Disclosure Of Revenue From Contracts With Customers [Line Items]
Transaction price allocated to unsatisfied performance obligations, percentage	99.30%
Transaction price allocated to unsatisfied performance obligations	₩ 13,481
More than one year
Disclosure Of Revenue From Contracts With Customers [Line Items]
Transaction price allocated to unsatisfied performance obligations, percentage	0.70%
Transaction price allocated to unsatisfied performance obligations	₩ 98