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Risk Management - Summary of Fair Value Measurement of Financial Liabilities (Details) - KRW (₩) ₩ in Millions		Dec. 31, 2022	Dec. 31, 2021
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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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.

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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]]

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The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]

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