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Financial Risk Management - Summary of Maximum Exposure to Credit Risk (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | ₩ 11,578,687 | ₩ 10,731,034
Cash and cash equivalents (except for cash on hand) [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 2,989,713 | 2,625,581
Financial assets at amortized costs [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 5,687,103 | 5,034,621
Financial assets at fair value through other comprehensive income [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 491,713 | 1,118,619
Contract assets [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 745,085 | 586,438
Derivatives financial assets for hedging [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 99,453 | 7,684
Financial assets at fair value through profit or loss [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 862,481 | 680,453
Other financial assets at fair value through other comprehensive income [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | 94,750 | 6,570
Other financial assets at amortized costs [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Maximum exposure to credit risk | ₩ 608,389 | ₩ 671,068

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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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 2021-01-01 -Paragraph 35K -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 36 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_a&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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