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Risk Management - Summary of Fair Value Measurement of Financial Liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | ₩ 148,155,994 | ₩ 138,660,579
At fair value |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 452,234 | 432,751
Financial liabilities, at fair value |  | 452,234 | 432,751
At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 147,703,760 | 138,227,828
Financial liabilities, at fair value |  | 145,129,539 | 129,887,195
Derivative liabilities | Not Designated as Hedging Instrument | At fair value |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 428,670 | 407,246
Financial liabilities, at fair value |  | 428,670 | 407,246
Derivative liabilities | Designated as Hedging Instrument | At fair value |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 23,564 | 25,505
Financial liabilities, at fair value |  | 23,564 | 25,505
Secured borrowings | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 773,646 | 102,368
Financial liabilities, at fair value |  | 773,646 | 102,368
Unsecured bond | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 113,792,178 | 105,185,189
Financial liabilities, at fair value |  | 111,218,771 | 96,846,056
Lease liabilities | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 3,807,880 | 4,163,143
Financial liabilities, at fair value |  | 3,807,880 | 4,163,143
Unsecured borrowings | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 19,062,162 | 15,282,193
Financial liabilities, at fair value |  | 19,061,348 | 15,280,693
Trade and other payables | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities | [1] | 10,264,050 | 13,459,320
Financial liabilities, at fair value | [1] | 10,264,050 | 13,459,320
Bank overdraft | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 3,844 | 35,615
Financial liabilities, at fair value |  | ₩ 3,844 | ₩ 35,615
[1] | Excludes lease liabilities.

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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 of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_25&doctype=Standard -URIDate 2023-03-23 + Details
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