Net gain or loss on financial instruments at fair value through profit or loss - Summary of gains related to financial instruments at FVTPL (Details) - KRW (₩) ₩ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of detailed information about financial instruments [line items] | |||
| Total | ₩ 725,939 | ₩ 1,492,783 | ₩ 488,486 |
| Gain on financial instruments at FVTPL [member] | |||
| Disclosure of detailed information about financial instruments [line items] | |||
| Total | 723,045 | 1,512,430 | 488,486 |
| Loss on financial instruments designated to be measured at FVTPL [member] | |||
| Disclosure of detailed information about financial instruments [line items] | |||
| Total | ₩ 2,894 | ₩ (19,647) | ₩ 0 |