Financial Risk Management - Schedule of Impairment of Trade Receivable (Details) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Trade receivables \| Valuation allowance
Disclosure of impairment loss and reversal of impairment loss [line items]
Impairment loss Bad debt expenses	₩ 71,654	₩ 95,060

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.

No definition available.

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