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Risk Management - Summary of Maximum Exposure to Credit Risk (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Cash and Cash Equivalents |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | ₩ 2,635,238 | ₩ 2,029,584
Financial assets at fair value through profit or loss |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk | [1] | 932,736 | 1,808,404
Not Designated as Hedging Instrument |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 443,027 | 110,764
Financial assets at fair value through other comprehensive income (debt securities) |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 491 | 0
Financial assets at amortized cost |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 25,273 | 14,422
Loans and receivables |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 909,071 | 790,162
Long-term/short-term financial instruments |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 1,728,508 | 2,062,103
Designated as Hedging Instrument |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 204,756 | 55,649
Trade and other receivables |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 10,029,276 | 9,780,039
Financial guarantee contracts |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk | [2] | ₩ 3,718,015 | ₩ 3,224,696
[1] | Equity investments held by the Company are excluded.
[2] | Maximum exposure associated with the financial guarantee contracts is the maximum amounts of the obligation.

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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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