Financial Risk Management - Schedule of Maximum Exposure to Credit Risk (Details) - KRW (₩) ₩ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of credit risk exposure [line items] | ||
| Maximum exposure to credit risk | ₩ 683,628 | ₩ 642,739 |
| Cash and cash equivalents | ||
| Disclosure of credit risk exposure [line items] | ||
| Maximum exposure to credit risk | 203,599 | 228,898 |
| Short-term financial instruments | ||
| Disclosure of credit risk exposure [line items] | ||
| Maximum exposure to credit risk | 415,034 | 324,304 |
| Accounts receivable, net | ||
| Disclosure of credit risk exposure [line items] | ||
| Maximum exposure to credit risk | 56,318 | 81,152 |
| Other receivables, net | ||
| Disclosure of credit risk exposure [line items] | ||
| Maximum exposure to credit risk | 532 | 16 |
| Other current financial assets | ||
| Disclosure of credit risk exposure [line items] | ||
| Maximum exposure to credit risk | 4,333 | 6,602 |
| Other non-current financial assets | ||
| Disclosure of credit risk exposure [line items] | ||
| Maximum exposure to credit risk | ₩ 3,812 | ₩ 1,767 |