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Financial Risk Management - Summary of Contractual Undiscounted Cash Flows (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Trade and other payables | ₩ 8,922,416 | ₩ 8,483,110
Borrowings (including debentures) | 10,693,722 | 11,016,756
Lease liabilities | 1,340,166 | 1,336,761
Other non-derivative financial liabilities | 1,130,037 | 336,178
Financial guarantee contracts | 116,719 | 26,206
Total | 22,203,060 | 21,199,011
Less than 1 year [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Trade and other payables | 8,184,036 | 7,386,703
Borrowings (including debentures) | 2,922,557 | 2,028,207
Lease liabilities | 313,431 | 313,162
Other non-derivative financial liabilities | 372,743 | 33,279
Financial guarantee contracts | 13,719 | 21,618
Total | 11,806,486 | 9,782,969
1-5 years [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Trade and other payables | 730,340 | 1,009,559
Borrowings (including debentures) | 6,027,323 | 6,972,077
Lease liabilities | 617,561 | 615,766
Other non-derivative financial liabilities | 747,221 | 209,155
Financial guarantee contracts | 103,000 |
Total | 8,225,445 | 8,806,557
More than 5 years [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Trade and other payables | 8,040 | 86,848
Borrowings (including debentures) | 1,743,842 | 2,016,472
Lease liabilities | 409,174 | 407,833
Other non-derivative financial liabilities | 10,073 | 93,744
Financial guarantee contracts | 0 | 4,588
Total | ₩ 2,171,129 | ₩ 2,609,485

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