v3.26.1
Income tax expense - Unrealizable temporary differences (Details) - KRW (₩)
₩ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure Of Unrecognized Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Deductible temporary differences ₩ 510,185 ₩ 332,384
Tax loss carry forward 0 62,963
Taxable temporary differences (10,417,258) (10,335,041)
Total (9,907,073) ₩ (9,939,694)
Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised 477,836  
Temporary Differences For Which No Deferred Tax Liability Is Recognised 32,349  
Temporary Differences Associated With Investments In Subsidiaries Branches And Associates And Interests In Joint Ventures    
Disclosure Of Unrecognized Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Deductible temporary differences 10,417,258  
Temporary Differences Associated With Others    
Disclosure Of Unrecognized Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Deductible temporary differences ₩ 0