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Risk Management - Summary of Fair Value Measurement of Financial Liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | ₩ 138,660,579 | ₩ 94,757,468
At fair value |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 432,751 | 78,031
Financial liabilities, at fair value |  | 432,751 | 78,031
At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 138,227,828 | 94,679,437
Financial liabilities, at fair value |  | 129,887,195 | 90,067,938
Derivative liabilities | Not Designated as Hedging Instrument | At fair value |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 407,246 | 56,256
Financial liabilities, at fair value |  | 407,246 | 56,256
Derivative liabilities | Designated as Hedging Instrument | At fair value |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 25,505 | 21,775
Financial liabilities, at fair value |  | 25,505 | 21,775
Secured borrowings | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 102,368 | 176,358
Financial liabilities, at fair value |  | 102,368 | 176,358
Unsecured bond | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 105,185,189 | 73,881,671
Financial liabilities, at fair value |  | 96,846,056 | 69,803,043
Lease liabilities | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 4,163,143 | 4,410,503
Financial liabilities, at fair value |  | 4,163,143 | 4,410,503
Unsecured borrowings | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 15,282,193 | 6,471,484
Financial liabilities, at fair value |  | 15,280,693 | 5,938,613
Trade and other payables | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities | [1] | 13,459,320 | 9,739,421
Financial liabilities, at fair value | [1] | 13,459,320 | 9,739,421
Bank overdraft | At amortized cost |  |  |
Disclosure of financial liabilities [line items] |  |  |
Financial liabilities |  | 35,615 | 0
Financial liabilities, at fair value |  | ₩ 35,615 | ₩ 0
[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 2022-03-24 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_25&doctype=Standard -URIDate 2022-03-24 + Details
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