Risk Management - Maturity analysis of Offbalance accounts (Details) - KRW (₩) ₩ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of maturity analysis for off balance sheet item [Abstract] | ||
| Payment guarantees | ₩ 16,070,098 | ₩ 16,611,262 |
| Loan commitments | 134,286,067 | 133,863,588 |
| Other commitments | ₩ 5,806,012 | ₩ 4,572,323 |