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Financial Risk Management - Summary of Maximum Exposure to Credit Risk (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | ₩ 13,027,594 | ₩ 11,578,687
Cash and cash equivalents (except for cash on hand) [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 2,437,629 | 2,989,713
Financial assets at amortized costs [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 7,459,994 | 5,687,103
Financial assets at fair value through other comprehensive income [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 129,124 | 491,713
Contract assets [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 802,253 | 745,085
Derivatives financial assets for hedging [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 190,830 | 99,453
Financial assets at fair value through profit or loss [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 942,274 | 862,481
Financial assets at fair value through other comprehensive income [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 5,432 | 94,750
Financial assets at amortized costs [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | ₩ 1,060,058 | ₩ 608,389

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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 36 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_a&doctype=Standard&book=b -URIDate 2022-03-24 + Details
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