Leases - Summary of Changes in Assets Subject to Operating Lease (Details) - KRW (₩) ₩ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Changes In Assets Subject To Operating Lease [Abstract] | |||
| Beginning balance | ₩ 3,922,844 | ₩ 3,285,926 | |
| Acquisition | 926,165 | 1,463,419 | |
| Disposal | (388,889) | (262,184) | |
| Depreciation | (629,079) | (587,148) | ₩ (462,394) |
| Others | (26,265) | 22,831 | |
| Ending balance | ₩ 3,804,776 | ₩ 3,922,844 | ₩ 3,285,926 |