Commitments and Contingencies - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Commitments and contingencies [Line Items]
Properties pledged as collateral for leases on buildings	₩ 1,198
Contract Value	800,000,000
Acquistion Of Property Plant And Equipment And Intangible Assets In The Future [Member]
Commitments and contingencies [Line Items]
Contractual commitment capital expenditure	24,008
Sales of Handsets [member]
Commitments and contingencies [Line Items]
Accounts receivable - other	₩ 205,160	₩ 241,962

The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments]

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- Definition

The amount receivable by the entity that it does not separately disclose in the same statement or note.

+ References

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- Definition

The amount of property, plant and equipment pledged as security for liabilities. [Refer: Property, plant and equipment]

+ References

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- Definition

Commitments and contingencies.

+ References

No definition available.

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- Definition

Contract Value.

+ References

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