v3.26.1
Insurance Contracts - Summary of the expected amounts to be recognized in profit or loss (Details)
₩ in Millions
Dec. 31, 2025
KRW (₩)
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin ₩ 3,033,563
1 year  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 172,054
2 years  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 155,398
3 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 140,927
4 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 130,462
5 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 120,720
6~10 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 481,013
11~20 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 657,915
21~30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 478,727
After 30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 696,347
Life [Member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 955,543
Life [Member] | 1 year  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 30,628
Life [Member] | 2 years  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 28,920
Life [Member] | 3 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 28,431
Life [Member] | 4 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 28,613
Life [Member] | 5 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 28,616
Life [Member] | 6~10 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 131,482
Life [Member] | 11~20 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 222,769
Life [Member] | 21~30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 180,182
Life [Member] | After 30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 275,902
Health [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 1,524,384
Health [member] | 1 year  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 78,792
Health [member] | 2 years  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 70,989
Health [member] | 3 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 62,633
Health [member] | 4 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 57,086
Health [member] | 5 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 52,756
Health [member] | 6~10 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 213,953
Health [member] | 11~20 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 331,027
Health [member] | 21~30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 259,354
Health [member] | After 30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 397,794
Annuity/ Savings and others [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 416,744
Annuity/ Savings and others [member] | 1 year  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 46,266
Annuity/ Savings and others [member] | 2 years  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 41,112
Annuity/ Savings and others [member] | 3 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 37,263
Annuity/ Savings and others [member] | 4 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 33,865
Annuity/ Savings and others [member] | 5 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 29,973
Annuity/ Savings and others [member] | 6~10 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 104,470
Annuity/ Savings and others [member] | 11~20 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 76,944
Annuity/ Savings and others [member] | 21~30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 29,301
Annuity/ Savings and others [member] | After 30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 17,550
Variable  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 136,892
Variable | 1 year  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 16,368
Variable | 2 years  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 14,377
Variable | 3 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 12,600
Variable | 4 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 10,898
Variable | 5 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 9,375
Variable | 6~10 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 31,108
Variable | 11~20 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 27,175
Variable | 21~30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin 9,890
Variable | After 30 years [member]  
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]  
Contractual service margin ₩ 5,101