Insurance Risk Management - Summary of Market Rate Risk Arising from Insurance Contracts (Details) - Market risk [member] ₩ in Millions |
Dec. 31, 2025
KRW (₩)
|
|---|---|
| Tongyang Life Insurance Co., Ltd. | |
| Market Rate Risk Arising From Insurance Contracts [Line Items] | |
| Insurance Contract Exposure | ₩ 25,686,541 |
| Reinsurance Contract Exposure | 437,556 |
| Financial Asset Exposure | 25,461,023 |
| ABL Life Insurance Co., Ltd. | |
| Market Rate Risk Arising From Insurance Contracts [Line Items] | |
| Insurance Contract Exposure | 16,853,760 |
| Reinsurance Contract Exposure | (97,148) |
| Financial Asset Exposure | ₩ 13,632,025 |