v3.26.1
Borrowings And Debentures - Details Of Borrowings (Details) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 331,187,528 ₩ 341,468,024
Total 34,183,267 30,117,031
Present value discount    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ (1,359) ₩ (4,367)
Borrowings from The BOK | Maximum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 1.00% 1.50%
Borrowings from The BOK | Total    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 1,845,239 ₩ 1,981,928
Lenders The BOK The BOK
Borrowings from government funds | Minimum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 0.00% 0.00%
Borrowings from government funds | Maximum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 3.50% 3.50%
Borrowings from government funds | Total    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 2,195,534 ₩ 2,165,257
Lenders Small Enterprise and Market Service and others Small Enterprise and Market Service and others
Others | Minimum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 0.00% 0.00%
Others | Maximum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 4.60% 5.60%
Others | Total    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 8,378,570 ₩ 7,955,941
Lenders The Korea Development Bank and others The Korea Development Bank and others
Borrowings in local currency    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 12,419,343 ₩ 12,103,126
Borrowings in foreign currencies    
Disclosure of detailed information about borrowings [line items]    
Lenders The Export-Import Bank of Korea and others The Export-Import Bank of Korea and others
Borrowings in foreign currencies | Minimum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 0.80% 0.00%
Borrowings in foreign currencies | Maximum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 10.00% 12.00%
Borrowings in foreign currencies | Total    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 13,071,842 ₩ 15,081,035
Bills sold | Minimum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 0.00% 0.00%
Bills sold | Maximum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 2.00% 2.70%
Bills sold | Total    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 1,033 ₩ 3,690
Lenders Others Others
Call money | Minimum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 1.70% 1.70%
Call money | Maximum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 10.00% 4.90%
Call money | Total    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 2,013,940 ₩ 1,402,780
Lenders Bank and others Bank and others
Bonds sold under repurchase agreements | Minimum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 1.00% 1.00%
Bonds sold under repurchase agreements | Maximum    
Disclosure of detailed information about borrowings [line items]    
Interest rate 14.90% 12.20%
Bonds sold under repurchase agreements | Total    
Disclosure of detailed information about borrowings [line items]    
Notional Amount ₩ 6,678,468 ₩ 1,530,767
Lenders Other financial institutions Other financial institutions