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Related Party Transactions - Summary of Transactions Prior Liquidation (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Acquisition of right of use assets [member]      
Statement [Line Items]      
Dividend Income ₩ 7 ₩ 1,966  
Acquisition of right of use assets [member] | HD Hyundai Robotics Co., Ltd.(formerly Hyundai Robotics Co., Ltd.) [member]      
Statement [Line Items]      
Dividend Income 0    
Acquisition of right of use assets [member] | K-Realty 11th Real Estate Investment Trust Company [Member]      
Statement [Line Items]      
Dividend Income 7 1,966  
Interest income [member]      
Statement [Line Items]      
Dividend Income 8,264 3,052 ₩ 223
Interest income [member] | Korea Information & Technology Investment Fund (KIF Investment Fund) [member]      
Statement [Line Items]      
Dividend Income     223
Interest income [member] | K Bank Inc.[Member]      
Statement [Line Items]      
Dividend Income 8,264 3,052  
Interest Expense [member]      
Statement [Line Items]      
Payables 261 260 205
Interest Expense [member] | K-Realty CR-REITs No.1 [member]      
Statement [Line Items]      
Payables     205
Interest Expense [member] | K-Realty 11th Real Estate Investment Trust Company [Member]      
Statement [Line Items]      
Payables 261 260  
Dividend Income [member]      
Statement [Line Items]      
Dividend Income 1,786 54,869 48,779
Dividend Income [member] | K-Realty CR-REITs No.1 [member]      
Statement [Line Items]      
Dividend Income   45,549 40,142
Dividend Income [member] | K-Realty 11th Real Estate Investment Trust Company [Member]      
Statement [Line Items]      
Dividend Income 507 162  
Dividend Income [member] | Others [member]      
Statement [Line Items]      
Dividend Income ₩ 1,279 ₩ 9,158 ₩ 8,637