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Events After the Reporting Period - Summary of Public Bonds Issued After Reporting Period (Detail)
₩ in Millions
12 Months Ended
Dec. 31, 2023
KRW (₩)
Disclosure of non-adjusting events after reporting period [line items]  
Annual interest rates 0.00%
Gross carrying amount [member] | The 200-1st Public bond [member]  
Disclosure of non-adjusting events after reporting period [line items]  
Issued Date Feb. 27, 2024
Annual interest rates 3.552%
Maturity Feb. 27, 2026
Carrying amount ₩ 120,000
Gross carrying amount [member] | The 200-2nd Public bond [member]  
Disclosure of non-adjusting events after reporting period [line items]  
Issued Date Feb. 27, 2024
Annual interest rates 3.608%
Maturity Feb. 26, 2027
Carrying amount ₩ 200,000
Gross carrying amount [member] | The 200-3rd Public bond [member]  
Disclosure of non-adjusting events after reporting period [line items]  
Issued Date Feb. 27, 2024
Annual interest rates 3.548%
Maturity Feb. 27, 2029
Carrying amount ₩ 80,000