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Trade and Other Receivables - Summary of Trade and Other Receivables (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure of financial assets [line items]    
Trade receivables ₩ 3,090,077 ₩ 2,982,867
Other receivables 3,007,995 2,104,623
Trade and other receivables, net 6,098,072 5,087,490
Trade receivables 395,359 592,447
Other receivables 1,095,687 498,879
Total 1,491,046 1,091,326
Gross carrying amount [member]    
Disclosure of financial assets [line items]    
Trade receivables 3,439,542 3,337,398
Other receivables 3,092,261 2,201,781
Trade and other receivables, net 6,531,803 5,539,179
Trade receivables 408,098 612,654
Other receivables 1,249,096 621,195
Total 1,657,194 1,233,849
Accumulated depreciation, amortisation and impairment [member]    
Disclosure of financial assets [line items]    
Trade receivables (342,539) (346,869)
Other receivables (82,243) (93,256)
Trade and other receivables, net (424,782) (440,125)
Trade receivables (1,199) (2,856)
Other receivables (136,300) (108,131)
Total (137,499) (110,987)
Present value discount [member]    
Disclosure of financial assets [line items]    
Trade receivables (6,926) (7,662)
Other receivables (2,023) (3,902)
Trade and other receivables, net (8,949) (11,564)
Trade receivables (11,540) (17,351)
Other receivables (17,109) (14,185)
Total ₩ (28,649) ₩ (31,536)