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Risk Management - Summary of Maximum Exposure to Credit Risk (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Cash and cash equivalents |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | ₩ 2,382,979 | ₩ 4,342,887
Financial assets at fair value through profit or loss |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk | [1] | 2,013,948 | 2,590,228
Derivative assets (trading) |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 1,846,527 | 730,948
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 |  | 5,045 | 4,627
Financial assets at amortized cost |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 30,233 | 38,843
Loans |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 908,148 | 988,331
Long-term/short-term financial instruments |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 1,960,140 | 1,412,315
Derivative assets (applying hedge accounting) |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 844,637 | 269,446
Trade and other receivables |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk |  | 15,373,625 | 14,179,322
Financial guarantee contracts |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Maximum exposure to credit risk | [2] | ₩ 5,151,554 | ₩ 4,399,189
[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 2024-01-01 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2024-03-27 + Details
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