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Financial Instruments by Category - Summary of Financial Instruments by Category (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of detailed information about financial instruments [line items] |  |  |  |
Trade and other payables | ₩ 7,214,174 | ₩ 8,317,822 |  |
Borrowings | 10,520,690 | 10,218,165 |  |
Other financial liabilities | 1,074,149 | 1,075,838 |  |
Lease liabilities | 1,059,453 | 1,179,909 |  |
Cash and cash equivalents | 3,716,680 | 2,879,554 | ₩ 2,449,062 | ₩ 3,019,592
Trade and other receivables | 7,688,183 | 8,574,457 |  |
Other financial assets | 4,103,418 | 4,164,961 |  |
Financial assets at amortized cost [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Cash and cash equivalents | 3,716,680 | 2,879,554 |  |
Trade and other receivables | 7,573,409 | 8,458,259 |  |
Other financial assets | 962,653 | 1,385,921 |  |
Financial assets at fair value through profit or loss [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Other financial assets | 1,029,926 | 939,661 |  |
Derivatives used for hedging [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Other financial liabilities | 3 | 24,547 |  |
Other financial assets | 445,471 | 159,211 |  |
Financial liabilities at amortized cost [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Trade and other payables | 7,214,174 | 8,317,822 |  |
Borrowings | 10,520,690 | 10,218,165 |  |
Other financial liabilities | 942,135 | 915,185 |  |
Financial liabilities designated as at fair value through profit or loss [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Other financial liabilities | 132,011 | 136,106 |  |
Financial assets at fair value through other comprehensive income [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Trade and other receivables | 114,774 | 116,198 |  |
Other financial assets | 1,665,368 | 1,680,168 |  |
Others [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Lease liabilities | ₩ 1,059,453 | ₩ 1,179,909 |  |

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B13 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_i&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
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