XML 213 R200.htm IDEA: XBRL DOCUMENT v3.26.1
Property and equipment - Changes in property and equipment (Details) (Parenthetical) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Changes in property, plant and equipment [abstract]    
Transferred from assets under construction ₩ 36,258 ₩ 26,185