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Non-current Assets Held for Sale - Summary of Investment Securities Liquidated as Non-current Assets Held for Sale (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure In Tabular Form Of Investment Securities Scheduled To Be Liquidated As Non Current Assets Held For Sale [Line Items]    
Non-current assets or disposal groups classified as held for sale ₩ 6,377 ₩ 8,734
Financial assets at fair value through profit or loss, category [member]    
Disclosure In Tabular Form Of Investment Securities Scheduled To Be Liquidated As Non Current Assets Held For Sale [Line Items]    
Non-current assets or disposal groups classified as held for sale 5,315  
Associates [member]    
Disclosure In Tabular Form Of Investment Securities Scheduled To Be Liquidated As Non Current Assets Held For Sale [Line Items]    
Non-current assets or disposal groups classified as held for sale 1,062  
Digital Content Korea Fund [Member] | Financial assets at fair value through profit or loss, category [member]    
Disclosure In Tabular Form Of Investment Securities Scheduled To Be Liquidated As Non Current Assets Held For Sale [Line Items]    
Non-current assets or disposal groups classified as held for sale 3,645  
Intervest Fund [Member] | Financial assets at fair value through profit or loss, category [member]    
Disclosure In Tabular Form Of Investment Securities Scheduled To Be Liquidated As Non Current Assets Held For Sale [Line Items]    
Non-current assets or disposal groups classified as held for sale 107  
Central Fusion Content Fund [Member] | Financial assets at fair value through profit or loss, category [member]    
Disclosure In Tabular Form Of Investment Securities Scheduled To Be Liquidated As Non Current Assets Held For Sale [Line Items]    
Non-current assets or disposal groups classified as held for sale ₩ 1,563