v3.26.1
Intangible assets and goodwill (Details) - KRW (₩)
₩ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill ₩ 77,795,128 ₩ 7,801,317 ₩ 8,157,327 ₩ 8,520,127
Computer software [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 58,833 110,937 197,547 290,947
Band [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 4,153,250 4,422,650 4,692,050 4,961,450
Crypto Assets [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 11,131,265    
Contents IP [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 1,834,748    
Goodwill [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 60,617,031 3,267,730 ₩ 3,267,730 ₩ 3,267,730
Gross carrying amount [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 212,406,452 9,143,039    
Gross carrying amount [member] | Computer software [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 273,500 487,309    
Gross carrying amount [member] | Band [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 5,388,000 5,388,000    
Gross carrying amount [member] | Crypto Assets [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 13,823,661      
Gross carrying amount [member] | Contents IP [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 2,113,318      
Gross carrying amount [member] | Goodwill [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill 190,807,972 3,267,730    
Accumulated Amortisation [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill (1,727,987) (1,341,722)    
Accumulated Amortisation [Member] | Computer software [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill (214,667) (376,372)    
Accumulated Amortisation [Member] | Band [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill (1,234,750) (965,350)    
Accumulated Amortisation [Member] | Crypto Assets [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill      
Accumulated Amortisation [Member] | Contents IP [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill (278,570)      
Accumulated Amortisation [Member] | Goodwill [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill    
Accumulated impairment [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill (132,883,337)      
Accumulated impairment [member] | Computer software [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill      
Accumulated impairment [member] | Band [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill      
Accumulated impairment [member] | Crypto Assets [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill (2,692,396)      
Accumulated impairment [member] | Contents IP [Member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill      
Accumulated impairment [member] | Goodwill [member]        
IfrsStatementLineItems [Line Items]        
Intangible assets and goodwill ₩ (130,190,941)