v3.26.1
Intangible Assets - Sensitivity Analysis For Cash Generating Units (Details)
₩ in Millions
 12 Months Ended
Dec. 31, 2025
KRW (₩)
Woori Investment Securities Co., Ltd. | Discount rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs ₩ (167,568)
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs 206,668
Woori Investment Securities Co., Ltd. | Terminal growth rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs 140,527
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs (116,990)
Woori Asset Trust Co., Ltd. | Discount rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs (30,766)
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs 37,046
Woori Asset Trust Co., Ltd. | Terminal growth rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs 21,975
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs (18,310)
Woori Asset Management Corp. | Discount rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs (24,947)
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs 29,634
Woori Asset Management Corp. | Terminal growth rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs 16,999
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs (14,378)
Woori Venture Partners Co., Ltd. | Discount rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs (33,705)
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs 42,300
Woori Venture Partners Co., Ltd. | Terminal growth rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs 29,384
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs (23,668)
PT Bank Woori Saudara Indonesia 1906 Tbk | Discount rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs (97,991)
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs 116,379
PT Bank Woori Saudara Indonesia 1906 Tbk | Terminal growth rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs 78,719
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs (66,567)
WOORI BANK (CAMBODIA) PLC | Discount rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs (52,311)
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs 62,246
WOORI BANK (CAMBODIA) PLC | Terminal growth rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs 42,278
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs (35,687)
PT Woori Finance Indonesia Tbk. | Discount rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs (12,212)
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs 14,235
PT Woori Finance Indonesia Tbk. | Terminal growth rate (%)  
Disclosure of sensitivity analysis for cash-generating units [Line Items]  
Increase in cash-generating units due to reasonably possible increase in unobservable inputs 9,220
Decrease in cash-generating units due to reasonably possible decrease in unobservable inputs ₩ 7,946