v3.26.1
Financial Risk Management - Periods in Which Cash Flows from Cash Flow Hedge Derivatives are Expected to Occur (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of maturity analysis for derivative financial liabilities [line items]    
Assets, carrying amount ₩ 310,146 ₩ 341,108
Liabilities, carrying amount (6,403) (3,437)
Derivatives hedging instrument [member]    
Disclosure of maturity analysis for derivative financial liabilities [line items]    
Assets, carrying amount 201,262 ₩ 270,797
Liabilities, carrying amount (621)  
Assets, contractual cash flows 207,405  
Liabilities, contractual cash flows (627)  
Less than 1 year [member] | Derivatives hedging instrument [member]    
Disclosure of maturity analysis for derivative financial liabilities [line items]    
Assets, contractual cash flows 22,033  
Liabilities, contractual cash flows (627)  
1-5 years [member]    
Disclosure of maturity analysis for derivative financial liabilities [line items]    
Assets, contractual cash flows 185,372  
Liabilities, contractual cash flows ₩ 0