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Commitments and Contingencies - Summary of Guarantees Received from Financial Institutions (Detail) - Dec. 31, 2022
$ in Thousands, ₩ in Millions
KRW (₩)
USD ($)
Disclosure of detailed information about borrowings [line items]    
Guarantees limit ₩ 2,319,939 $ 109,645
Guarantee for payment in korean currency [member] | Hana Bank [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 4,000  
Guarantee for payment in korean currency [member] | Woori Bank [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 5,200  
Comprehensive Credit Line and Others [Member] | Hana Bank [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 3,100 10,300
Guarantee for payment in foreign currency [member] | Hana Bank [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit | $   273
Guarantee for payment in foreign currency [member] | Kookmin Bank [member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit | $   6,484
Guarantee for payment in foreign currency [member] | Woori Bank [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit | $   7,000
Guarantee For Payment In Korean Currency And Others [Member] | Shinhan Bank [member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 36,298  
Guarantee For Payment In Foreign Currency And Others [Member] | Shinhan Bank [member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit | $   77,837
Refund guarantee for advances received [Member] | Korea Development Bank [member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit | $   6,880
Guarantees for depositions [Member] | H S B C [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit | $   $ 871
Performance Guarantee And Others [Member] | Seoul Guarantee Insurance Company [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 783,247  
Performance Guarantee And Others [Member] | Korea Software Financial Cooperative [member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 1,445,072  
Performance Guarantee And Others [Member] | Korea Specialty Contractor Financial Cooperative [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 531  
Performance Guarantee And Others [Member] | Korea Housing Finance Corporation [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit 14,464  
Performance Guarantee And Others [Member] | Information & Communication Financial Cooperative [Member]    
Disclosure of detailed information about borrowings [line items]    
Guarantees limit ₩ 28,027