v3.26.1
Loans and other financial assets at amortized cost - Changes in allowances for credit losses on loans (Details) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance ₩ (486,850,601)    
Changes in allowance account for credit losses of financial assets [abstract]      
Ending balance (549,165,419) ₩ (486,850,601)  
Loans and receivables, category [member]      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (386,173,471)    
Changes in allowance account for credit losses of financial assets [abstract]      
Ending balance (399,842,717) (386,173,471)  
Loans and receivables, category [member] | Allowance for credit losses | Stage 1      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (1,323,126) (1,242,267) ₩ (672,636)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses (155,984) (134,787) (246,530)
Transfer to lifetime expected credit losses 63,441 84,243 46,227
Transfer to credit-impaired financial assets 119,921 137,138 25,792
Net reversal (provision) of allowance for credit losses 68 (141,399) (406,628)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 47 1,465 284
Interest income from impaired loans 0 0 0
Others 28,910 (27,519) 11,224
Changes due to business combinations (25,041)    
Ending balance (1,291,764) (1,323,126) (1,242,267)
Loans and receivables, category [member] | Allowance for credit losses | Lifetime expected credit losses | Stage 2      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (962,991) (1,014,758) (1,074,137)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 147,172 131,909 242,995
Transfer to lifetime expected credit losses (79,413) (90,222) (56,541)
Transfer to credit-impaired financial assets 151,911 182,616 60,230
Net reversal (provision) of allowance for credit losses (5,091) (186,036) (209,954)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 5,374 8,707 931
Interest income from impaired loans 0 0 0
Others 27,700 4,793 21,718
Changes due to business combinations (26,655)    
Ending balance (741,993) (962,991) (1,014,758)
Loans and receivables, category [member] | Allowance for credit losses | Lifetime expected credit losses | Stage 3      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (1,064,213) (717,946) (587,353)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 8,812 2,878 3,535
Transfer to lifetime expected credit losses 15,972 5,979 10,314
Transfer to credit-impaired financial assets (271,832) (319,754) (86,022)
Net reversal (provision) of allowance for credit losses (1,938,456) (1,340,480) (1,194,936)
Recovery (119,730) (121,893) (143,392)
Charge-off 1,563,308 882,478 906,665
Disposal 466,043 464,761 326,522
Interest income from impaired loans 49,879 44,814 34,894
Others 133,615 34,950 11,827
Changes due to business combinations (46,584)    
Ending balance (1,203,186) (1,064,213) (717,946)
Loans and receivables, category [member] | Allowance for credit losses | Consumers | Stage 1      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (228,330) (196,845) (147,876)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses (34,745) (27,467) (25,553)
Transfer to lifetime expected credit losses 17,032 14,659 10,881
Transfer to credit-impaired financial assets 11,444 7,714 7,085
Net reversal (provision) of allowance for credit losses 22,945 (28,741) (41,029)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 23 1,442 18
Interest income from impaired loans 0 0 0
Others 9,578 908 (371)
Changes due to business combinations (2,536)    
Ending balance (204,589) (228,330) (196,845)
Loans and receivables, category [member] | Allowance for credit losses | Consumers | Lifetime expected credit losses | Stage 2      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (148,315) (134,002) (128,089)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 33,583 25,983 22,750
Transfer to lifetime expected credit losses (19,243) (17,333) (12,892)
Transfer to credit-impaired financial assets 15,959 18,054 24,577
Net reversal (provision) of allowance for credit losses (43,140) (43,686) (41,105)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 1,638 2,032 419
Interest income from impaired loans 0 0 0
Others 2,239 637 338
Changes due to business combinations (184)    
Ending balance (157,463) (148,315) (134,002)
Loans and receivables, category [member] | Allowance for credit losses | Consumers | Lifetime expected credit losses | Stage 3      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (280,125) (220,845) (241,942)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 1,162 1,484 2,803
Transfer to lifetime expected credit losses 2,211 2,674 2,011
Transfer to credit-impaired financial assets (27,403) (25,768) (31,662)
Net reversal (provision) of allowance for credit losses (374,328) (378,285) (340,607)
Recovery (45,352) (61,554) (65,639)
Charge-off 277,324 262,651 301,995
Disposal 92,299 75,603 114,643
Interest income from impaired loans 17,062 14,629 15,553
Others 34,898 49,286 22,000
Changes due to business combinations (13,979)    
Ending balance (316,231) (280,125) (220,845)
Loans and receivables, category [member] | Allowance for credit losses | Corporates | Stage 1      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (971,499) (947,688) (453,621)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses (88,031) (76,352) (190,665)
Transfer to lifetime expected credit losses 36,659 60,633 28,452
Transfer to credit-impaired financial assets 106,321 128,228 17,959
Net reversal (provision) of allowance for credit losses (36,919) (107,916) (361,735)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 24 23 266
Interest income from impaired loans 0 0 0
Others 19,332 (28,427) 11,656
Changes due to business combinations (22,505)    
Ending balance (956,618) (971,499) (947,688)
Loans and receivables, category [member] | Allowance for credit losses | Corporates | Lifetime expected credit losses | Stage 2      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (699,646) (762,644) (818,234)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 80,756 75,186 190,047
Transfer to lifetime expected credit losses (49,487) (63,280) (36,229)
Transfer to credit-impaired financial assets 132,761 162,162 33,272
Net reversal (provision) of allowance for credit losses 52,189 (121,901) (153,392)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 3,736 6,675 512
Interest income from impaired loans 0 0 0
Others 25,461 4,156 21,380
Changes due to business combinations (26,471)    
Ending balance (480,701) (699,646) (762,644)
Loans and receivables, category [member] | Allowance for credit losses | Corporates | Lifetime expected credit losses | Stage 3      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (625,921) (363,703) (241,465)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 7,275 1,166 618
Transfer to lifetime expected credit losses 12,828 2,647 7,777
Transfer to credit-impaired financial assets (239,082) (290,390) (51,231)
Net reversal (provision) of allowance for credit losses (1,096,710) (582,211) (515,711)
Recovery (47,208) (36,318) (44,043)
Charge-off 899,536 329,506 298,665
Disposal 300,492 297,533 172,519
Interest income from impaired loans 32,817 30,185 19,341
Others 98,717 (14,336) (10,173)
Changes due to business combinations (32,605)    
Ending balance (689,861) (625,921) (363,703)
Loans and receivables, category [member] | Allowance for credit losses | Credit card accounts      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (7,295) (89) (27)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 0 0 0
Transfer to lifetime expected credit losses 0 0 0
Transfer to credit-impaired financial assets 0 0 0
Net reversal (provision) of allowance for credit losses (3,809) (7,663) (1,011)
Recovery 0 0 0
Charge-off 0 622 0
Disposal 7,002 837 949
Interest income from impaired loans 0 0 0
Others (5,207) (1,002) 0
Changes due to business combinations 0    
Ending balance (9,309) (7,295) (89)
Loans and receivables, category [member] | Allowance for credit losses | Credit card accounts | Stage 1      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (123,297) (97,734) (71,139)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses (33,208) (30,968) (30,312)
Transfer to lifetime expected credit losses 9,750 8,951 6,894
Transfer to credit-impaired financial assets 2,156 1,196 748
Net reversal (provision) of allowance for credit losses 14,042 (4,742) (3,864)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 0 0 0
Interest income from impaired loans 0 0 0
Others 0 0 (61)
Changes due to business combinations 0    
Ending balance (130,557) (123,297) (97,734)
Loans and receivables, category [member] | Allowance for credit losses | Credit card accounts | Lifetime expected credit losses | Stage 2      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (115,030) (118,112) (127,814)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 32,833 30,740 30,198
Transfer to lifetime expected credit losses (10,683) (9,609) (7,420)
Transfer to credit-impaired financial assets 3,191 2,400 2,381
Net reversal (provision) of allowance for credit losses (14,140) (20,449) (15,457)
Recovery 0 0 0
Charge-off 0 0 0
Disposal 0 0 0
Interest income from impaired loans 0 0 0
Others 0 0 0
Changes due to business combinations 0    
Ending balance (103,829) (115,030) (118,112)
Loans and receivables, category [member] | Allowance for credit losses | Credit card accounts | Lifetime expected credit losses | Stage 3      
Reconciliation of changes in allowance account for credit losses of financial assets [Line Items]      
Beginning balance (158,167) (133,398) (103,946)
Changes in allowance account for credit losses of financial assets [abstract]      
Transfer to 12-month expected credit losses 375 228 114
Transfer to lifetime expected credit losses 933 658 526
Transfer to credit-impaired financial assets (5,347) (3,596) (3,129)
Net reversal (provision) of allowance for credit losses (467,418) (379,984) (338,618)
Recovery (27,170) (24,021) (33,710)
Charge-off 386,448 290,321 306,005
Disposal 73,252 91,625 39,360
Interest income from impaired loans 0 0 0
Others 0 0 0
Changes due to business combinations 0    
Ending balance ₩ (197,094) ₩ (158,167) ₩ (133,398)