v3.26.1
Reinsurance Contracts - Summary of Reconciliation of Changes In Reinsurance Contracts By Remaining Coverage And Incurred Claims (Details)
$ in Thousands, ₩ in Millions
 12 Months Ended
Dec. 31, 2025
KRW (₩)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
KRW (₩)
Dec. 31, 2023
KRW (₩)
Dec. 31, 2025
USD ($)
Disclosure Of Reconciliation Of Changes In ReInsurance Contracts By Remaining Coverage And Incurred Claims [Line Items]          
Increase due to business combinations related to Reinsurance contracts liabilities ₩ 184,792   ₩ 0   $ 127,924
Reinsurance Income - Changes in asset for incurred claims 689,461        
Total Changes in net income, other comprehensive income and reinsurance service result 1,786,814 $ 1,236,935 0 ₩ 0  
Reinsurance contracts held [member]          
Disclosure Of Reconciliation Of Changes In ReInsurance Contracts By Remaining Coverage And Incurred Claims [Line Items]          
Beginning balance - Insurance contracts assets 0        
Beginning balance - Insurance contracts liabilities 0        
Beginning balance - Net insurance contracts liabilities (asset) 0        
Increase due to business combinations related to Reinsurance contracts liabilities 136,349        
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 450,097        
Reinsurance Income - Reversal of loss components 3,745        
Reinsurance Income - Sub-total 633        
Reinsurance finance interest income and other insurance finance income - Effect of changes in credit risk of reinsurance liabilities (293)        
Reinsurance finance interest income and other insurance finance income - Net income (6,905)        
Reinsurance finance interest income and other insurance finance income - Sub-total [1] (20,157)        
Cash flow - Premium paid 62,921        
Cash flow - Claims and other reinsurance service expenses paid including investment components (66,502)        
Other increase (decrease) (3,581)        
Ending balance - Insurance contracts assets 620,207   0    
Ending balance - Insurance contracts liabilities 184,792   0    
Ending balance - Net insurance contracts liabilities (asset) 435,415   0    
Insurance Contracts To Which Premium Allocation Approach Not Applied [Member] | Reinsurance contracts held [member]          
Disclosure Of Reconciliation Of Changes In ReInsurance Contracts By Remaining Coverage And Incurred Claims [Line Items]          
Beginning balance - Insurance contracts assets 0        
Beginning balance - Insurance contracts liabilities 0        
Beginning balance - Net insurance contracts liabilities (asset) 0        
Increase due to business combinations related to Reinsurance contract assets 586,446        
Increase due to business combinations related to Reinsurance contracts liabilities 136,349        
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 450,097        
Reinsurance expenses - Reinsurance contracts under conversion (37,012)        
Net reinsurance contracts under conversion (37,012)        
Reinsurance income - Reinsurance expenses and reinsurance service expenses incurred 32,341        
Reinsurance Income - Changes in asset for incurred claims 3,745        
Reinsurance Income - Reversal of loss components 633        
Reinsurance Income - Sub-total 36,719        
Reinsurance service result (293)        
Reinsurance finance interest income and other insurance finance income - Effect of changes in credit risk of reinsurance liabilities 365        
Reinsurance finance interest income and other insurance finance income - Net income 6,905        
Reinsurance finance interest income and other insurance finance income - Other comprehensive income (20,157)        
Reinsurance finance interest income and other insurance finance income - Sub-total (12,887)        
Total Changes in net income, other comprehensive income and reinsurance service result (13,180)        
Reinsurance service result and investment components excluded from reinsurance finance interest income and other insurance finance income 0        
Cash flow - Premium paid 62,921        
Cash flow - Claims and other reinsurance service expenses paid including investment components (66,502)        
Cash flow - Sub-total (3,581)        
Other increase (decrease) 2,079        
Ending balance - Insurance contracts assets 620,207   0    
Ending balance - Insurance contracts liabilities 184,792   0    
Ending balance - Net insurance contracts liabilities (asset) 435,415   0    
Insurance Contracts To Which Premium Allocation Approach Not Applied [Member] | Reinsurance contracts held [member] | Liability (asset) for remaining coverage - Excluding loss recovery component [member]          
Disclosure Of Reconciliation Of Changes In ReInsurance Contracts By Remaining Coverage And Incurred Claims [Line Items]          
Beginning balance - Insurance contracts assets 0        
Beginning balance - Insurance contracts liabilities 0        
Beginning balance - Net insurance contracts liabilities (asset) 0        
Increase due to business combinations related to Reinsurance contract assets 582,962        
Increase due to business combinations related to Reinsurance contracts liabilities 153,241        
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 429,721        
Reinsurance expenses - Reinsurance contracts under conversion (37,012)        
Net reinsurance contracts under conversion (37,012)        
Reinsurance income - Reinsurance expenses and reinsurance service expenses incurred 0        
Reinsurance Income - Changes in asset for incurred claims 0        
Reinsurance Income - Reversal of loss components 0        
Reinsurance Income - Sub-total 0        
Reinsurance service result (37,012)        
Reinsurance finance interest income and other insurance finance income - Effect of changes in credit risk of reinsurance liabilities 365        
Reinsurance finance interest income and other insurance finance income - Net income 6,115        
Reinsurance finance interest income and other insurance finance income - Other comprehensive income (20,099)        
Reinsurance finance interest income and other insurance finance income - Sub-total (13,619)        
Total Changes in net income, other comprehensive income and reinsurance service result (50,631)        
Reinsurance service result and investment components excluded from reinsurance finance interest income and other insurance finance income (39,806)        
Cash flow - Premium paid 62,921        
Cash flow - Claims and other reinsurance service expenses paid including investment components (6,662)        
Cash flow - Sub-total 56,259        
Other increase (decrease) 0        
Ending balance - Insurance contracts assets 460,626   0    
Ending balance - Insurance contracts liabilities 65,083   0    
Ending balance - Net insurance contracts liabilities (asset) 395,543   0    
Insurance Contracts To Which Premium Allocation Approach Not Applied [Member] | Reinsurance contracts held [member] | Liability (asset) for remaining coverage - Loss recovery component [member]          
Disclosure Of Reconciliation Of Changes In ReInsurance Contracts By Remaining Coverage And Incurred Claims [Line Items]          
Beginning balance - Insurance contracts assets 0        
Beginning balance - Insurance contracts liabilities 0        
Beginning balance - Net insurance contracts liabilities (asset) 0        
Increase due to business combinations related to Reinsurance contract assets 0        
Increase due to business combinations related to Reinsurance contracts liabilities 0        
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 0        
Reinsurance expenses - Reinsurance contracts under conversion 0        
Net reinsurance contracts under conversion 0        
Reinsurance income - Reinsurance expenses and reinsurance service expenses incurred 56        
Reinsurance Income - Changes in asset for incurred claims 0        
Reinsurance Income - Reversal of loss components 633        
Reinsurance Income - Sub-total 689        
Reinsurance service result 689        
Reinsurance finance interest income and other insurance finance income - Effect of changes in credit risk of reinsurance liabilities 0        
Reinsurance finance interest income and other insurance finance income - Net income 278        
Reinsurance finance interest income and other insurance finance income - Other comprehensive income 0        
Reinsurance finance interest income and other insurance finance income - Sub-total 278        
Total Changes in net income, other comprehensive income and reinsurance service result 967        
Reinsurance service result and investment components excluded from reinsurance finance interest income and other insurance finance income 0        
Cash flow - Premium paid 0        
Cash flow - Claims and other reinsurance service expenses paid including investment components 0        
Cash flow - Sub-total 0        
Other increase (decrease) 0        
Ending balance - Insurance contracts assets 125,747   0    
Ending balance - Insurance contracts liabilities 124,780   0    
Ending balance - Net insurance contracts liabilities (asset) 967   0    
Insurance Contracts To Which Premium Allocation Approach Not Applied [Member] | Reinsurance contracts held [member] | Asset (liability) for incurred claim [member]          
Disclosure Of Reconciliation Of Changes In ReInsurance Contracts By Remaining Coverage And Incurred Claims [Line Items]          
Beginning balance - Insurance contracts assets 0        
Beginning balance - Insurance contracts liabilities 0        
Beginning balance - Net insurance contracts liabilities (asset) 0        
Increase due to business combinations related to Reinsurance contract assets 3,484        
Increase due to business combinations related to Reinsurance contracts liabilities (16,892)        
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 20,376        
Reinsurance expenses - Reinsurance contracts under conversion 0        
Net reinsurance contracts under conversion 0        
Reinsurance income - Reinsurance expenses and reinsurance service expenses incurred 32,285        
Reinsurance Income - Changes in asset for incurred claims 3,745        
Reinsurance Income - Reversal of loss components 0        
Reinsurance Income - Sub-total 36,030        
Reinsurance service result 36,030        
Reinsurance finance interest income and other insurance finance income - Effect of changes in credit risk of reinsurance liabilities 0        
Reinsurance finance interest income and other insurance finance income - Net income 512        
Reinsurance finance interest income and other insurance finance income - Other comprehensive income (58)        
Reinsurance finance interest income and other insurance finance income - Sub-total 454        
Total Changes in net income, other comprehensive income and reinsurance service result 36,484        
Reinsurance service result and investment components excluded from reinsurance finance interest income and other insurance finance income 39,806        
Cash flow - Premium paid 0        
Cash flow - Claims and other reinsurance service expenses paid including investment components (59,840)        
Cash flow - Sub-total (59,840)        
Other increase (decrease) 2,079        
Ending balance - Insurance contracts assets 33,834   0    
Ending balance - Insurance contracts liabilities (5,071)   0    
Ending balance - Net insurance contracts liabilities (asset) ₩ 38,905   ₩ 0    
[1] The finance income recognized in other comprehensive income is the amount before deducting tax and non-controlling interests.