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Contingencies and Commitments - Summary of Ongoing Litigations Related With Contingent Liabilities And Contingent Assets (Details) ₩ in Millions	Dec. 31, 2021 KRW (₩)	Dec. 31, 2020 KRW (₩)
As the defendant
Litigation Case [Line Items]
Number of cases	683	663
Claim amount	₩ 689,415	₩ 550,535
As the plaintiff
Litigation Case [Line Items]
Number of cases	284	200
Claim amount	₩ 784,453	₩ 729,798

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- Definition

Claim amount.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- References

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Number of cases.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

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Period Type: