Capital - Summary of Retained Earnings (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2024	Dec. 31, 2023
Contract Assets And Contract Liabilities [Line Items]
Unappropriated retained earnings	₩ 513,418	₩ 428,499

A component of equity representing the entity's cumulative undistributed earnings or deficit.

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