v3.26.1
Intangible assets and goodwill (Details 1) - KRW (₩)
₩ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]      
Beginning balance ₩ 7,801,317 ₩ 8,157,327 ₩ 8,520,127
Changes in scope of consolidation 193,772,391    
Acquisition 13,823,661    
Amortization (600,075) (356,010) (362,800)
Impairment (131,969,664)    
Other [1] (5,032,503)    
Ending balance 77,795,128 7,801,317 8,157,327
Computer software [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 110,937 197,547 290,947
Changes in scope of consolidation    
Acquisition    
Amortization (52,104) (86,610) (93,400)
Impairment    
Other [1]    
Ending balance 58,833 110,937 197,547
Band [Member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 4,422,650 4,692,050 4,961,450
Acquisition    
Amortization (269,400) (269,400) (269,400)
Impairment    
Other [1]    
Ending balance 4,153,250 4,422,650 4,692,050
Goodwill [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 3,267,730 3,267,730 3,267,730
Changes in scope of consolidation 191,659,072    
Acquisition    
Amortization
Impairment (129,071,743)    
Other [1] (5,238,028)    
Ending balance 60,617,031 3,267,730 ₩ 3,267,730
Crypto Assets [Member]      
IfrsStatementLineItems [Line Items]      
Beginning balance    
Changes in scope of consolidation    
Acquisition 13,823,661    
Amortization    
Impairment (2,897,921)    
Other [1] 205,525    
Ending balance 11,131,265  
Contents IP [Member]      
IfrsStatementLineItems [Line Items]      
Beginning balance    
Changes in scope of consolidation 2,113,319    
Acquisition    
Amortization (278,571)    
Impairment    
Other [1]    
Ending balance ₩ 1,834,748  
[1] Other includes effects of changes in foreign currency exchange rates and others.