Leases - Summary of Future Lease Payments for the Lease Contracts (Details) - KRW (₩) ₩ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure Of Maturity Analysis Of Lease Payments Of Lessee [Line Items] | ||
| Future lease payments under the lease contracts | ₩ 614,862 | ₩ 562,345 |
| Within one year | ||
| Disclosure Of Maturity Analysis Of Lease Payments Of Lessee [Line Items] | ||
| Future lease payments under the lease contracts | 214,922 | 194,384 |
| After one year but within five years | ||
| Disclosure Of Maturity Analysis Of Lease Payments Of Lessee [Line Items] | ||
| Future lease payments under the lease contracts | 355,365 | 317,609 |
| After five years | ||
| Disclosure Of Maturity Analysis Of Lease Payments Of Lessee [Line Items] | ||
| Future lease payments under the lease contracts | ₩ 44,575 | ₩ 50,352 |