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Trade and Other Payables - Summary of Trade and Other Payables (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Jan. 01, 2017
Current liabilities        
Trade payables ₩ 1,236,489   ₩ 1,399,287  
Other payables 5,771,026   6,026,801  
Total 7,007,515 ₩ 7,426,385 7,426,088 ₩ 7,141,725
Non-current liabilities        
Trade payables 3,207   4,787  
Other payables 1,510,657   996,582  
Total ₩ 1,513,864   ₩ 1,001,369 ₩ 1,188,311