v3.26.1
Reinsurance Contracts - Summary of Reconciliation of Changes in Reinsurance Contracts by Components (Details)
$ in Thousands, ₩ in Millions
12 Months Ended
Dec. 31, 2025
KRW (₩)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
KRW (₩)
Disclosure Of Reconciliation Of Changes In Reinsurance Contracts By Components [Line Items]      
Increase due to business combinations related to Reinsurance contract assets ₩ 620,207 $ 429,343 ₩ 0
Increase due to business combinations related to Reinsurance contracts liabilities 184,792 $ 127,924 ₩ 0
Changes related to future service - Effect of initially recognized contracts 8,174    
Risk adjustment for non-financial risk [member]      
Disclosure Of Reconciliation Of Changes In Reinsurance Contracts By Components [Line Items]      
Changes related to future service - Effect of initially recognized contracts 49,342    
Reinsurance contracts held [member]      
Disclosure Of Reconciliation Of Changes In Reinsurance Contracts By Components [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    
Changes related to current service - Amortization of contractual service margin (7,868)    
Changes related to current service - Changes in risk adjustment for non-financial risk (1,024)    
Changes related to current service - Experience adjustments 4,221    
Changes related to current service - Sub-total (4,671)    
Changes related to future service - Change in estimate adjusting contractual service margin 0    
Changes related to future service - Change in estimate adjusting loss recovery component 481    
Changes related to future service - Effect of initially recognized contracts [1] 152    
Changes related to future service - Sub-total 633    
Changes related to past service - Changes in asset for incurred claims 3,745    
Changes related to past service - Sub-total 3,745    
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 [2] (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)    
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    
Ending balance - Insurance contracts liabilities 184,792    
Ending balance - Net insurance contracts liabilities (asset) 435,415    
Reinsurance contracts held [member] | Estimates of present value of future cash flows [member]      
Disclosure Of Reconciliation Of Changes In Reinsurance Contracts By Components [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 470,958    
Increase due to business combinations related to Reinsurance contracts liabilities 289,635    
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 181,323    
Changes related to current service - Amortization of contractual service margin 0    
Changes related to current service - Changes in risk adjustment for non-financial risk 0    
Changes related to current service - Experience adjustments 4,221    
Changes related to current service - Sub-total 4,221    
Changes related to future service - Change in estimate adjusting contractual service margin 133,284    
Changes related to future service - Change in estimate adjusting loss recovery component 6,196    
Changes related to future service - Effect of initially recognized contracts (572)    
Changes related to future service - Sub-total 138,908    
Changes related to past service - Changes in asset for incurred claims 3,643    
Changes related to past service - Sub-total 3,643    
Reinsurance service result 146,772    
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 2,732    
Reinsurance finance interest income and other insurance finance income - Other comprehensive income (19,685)    
Reinsurance finance interest income and other insurance finance income - Sub-total (16,588)    
Total Changes in net income, other comprehensive income and reinsurance service result 130,184    
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 371,842    
Ending balance - Insurance contracts liabilities 61,837    
Ending balance - Net insurance contracts liabilities (asset) 310,005    
Reinsurance contracts held [member] | Risk adjustment for non-financial risk [member]      
Disclosure Of Reconciliation Of Changes In Reinsurance Contracts By Components [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 17,215    
Increase due to business combinations related to Reinsurance contracts liabilities (20,976)    
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 38,191    
Changes related to current service - Amortization of contractual service margin 0    
Changes related to current service - Changes in risk adjustment for non-financial risk (1,024)    
Changes related to current service - Experience adjustments 0    
Changes related to current service - Sub-total (1,024)    
Changes related to future service - Change in estimate adjusting contractual service margin (990)    
Changes related to future service - Change in estimate adjusting loss recovery component (5,715)    
Changes related to future service - Effect of initially recognized contracts [1] 38    
Changes related to future service - Sub-total (6,667)    
Changes related to past service - Changes in asset for incurred claims 102    
Changes related to past service - Sub-total 102    
Reinsurance service result (7,589)    
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 273    
Reinsurance finance interest income and other insurance finance income - Other comprehensive income (472)    
Reinsurance finance interest income and other insurance finance income - Sub-total (199)    
Total Changes in net income, other comprehensive income and reinsurance service result (7,788)    
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 24,068    
Ending balance - Insurance contracts liabilities (6,335)    
Ending balance - Net insurance contracts liabilities (asset) 30,403    
Reinsurance contracts held [member] | Insurance contracts under conversion [Member]      
Disclosure Of Reconciliation Of Changes In Reinsurance Contracts By Components [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 98,273    
Increase due to business combinations related to Reinsurance contracts liabilities (132,310)    
Increase due to business combinations related to Net reinsurance contracts asset (liabilities) 230,583    
Changes related to current service - Amortization of contractual service margin (7,868)    
Changes related to current service - Changes in risk adjustment for non-financial risk 0    
Changes related to current service - Experience adjustments 0    
Changes related to current service - Sub-total (7,868)    
Changes related to future service - Change in estimate adjusting contractual service margin (132,294)    
Changes related to future service - Change in estimate adjusting loss recovery component 0    
Changes related to future service - Effect of initially recognized contracts 686    
Changes related to future service - Sub-total (131,608)    
Changes related to past service - Changes in asset for incurred claims 0    
Changes related to past service - Sub-total 0    
Reinsurance service result (139,476)    
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 3,900    
Reinsurance finance interest income and other insurance finance income - Other comprehensive income 0    
Reinsurance finance interest income and other insurance finance income - Sub-total 3,900    
Total Changes in net income, other comprehensive income and reinsurance service result (135,576)    
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 224,297    
Ending balance - Insurance contracts liabilities 129,290    
Ending balance - Net insurance contracts liabilities (asset) ₩ 95,007    
[1] There are no reinsurance contracts acquired in a transfer.
[2] The finance income recognized in other comprehensive income is the amount before deducting tax and non-controlling interests.