Net Interest Income - Summary of Interest Expense (Details) $ in Thousands, ₩ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
KRW (₩)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
KRW (₩)
|
Dec. 31, 2023
KRW (₩)
|
|
| Interest costs [abstract] | ||||
| Interest on deposits due to customers | ₩ 8,050,948 | ₩ 9,599,529 | ₩ 8,738,249 | |
| Interest on borrowings | 1,111,255 | 1,351,612 | 1,294,710 | |
| Interest on debentures | 1,823,313 | 1,760,003 | 1,507,108 | |
| Other interest expense | 398,088 | 398,694 | 348,588 | |
| Interest on lease liabilities | 18,349 | 17,167 | 10,359 | |
| Total | 11,401,953 | 13,127,005 | 11,899,014 | |
| Insurance finance interest expense | 756,021 | $ 523,361 | 0 | 0 |
| Total | ₩ 12,157,974 | ₩ 13,127,005 | ₩ 11,899,014 | |