Borrowings and Debentures - Short-term Borrowings (Detail) - KRW (₩) ₩ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of detailed information about borrowings [line items] | ||
| Short-term borrowings | ₩ 130,000 | ₩ 100,000 |
| Short-term borrowings from SK Securities Co., Ltd. [member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Annual interest rate | 3.62% | |
| Maturity | Oct. 2, 2025 | |
| Short-term borrowings | ₩ 0 | 50,000 |
| Short-term borrowings from Shinhan Securities Co., Ltd. [member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Annual interest rate | 3.62% | |
| Maturity | Oct. 2, 2025 | |
| Short-term borrowings | ₩ 0 | 50,000 |
| Short-term borrowings from Bank of China Ltd. [Member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Annual interest rate | 2.83% | |
| Maturity | Oct. 29, 2026 | |
| Short-term borrowings | ₩ 130,000 | ₩ 0 |