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Other Financial Assets and Liabilities - Additional Information (Details) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about financial instruments [abstract]      
Effective portion recognized in profit or loss related to cash flow hedges ₩ 42,371 ₩ 364,863 ₩ 20,430
Ineffective portion recognized in profit or loss related to cash flow hedges 926 963 (41)
Valuation gains reclassified from other comprehensive income to profit or loss ₩ (33,837) ₩ 382,680 ₩ 50,648