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Statement of Cash Flows - Summary of Changes in Liabilities Incurred From Financing Activities (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	₩ 136,885,563	₩ 124,177,037
Cash flows	(3,673,668)	12,450,948
Increase	119,161	253,495
Effect of exchange rate fluctuations and others	495,462	4,083
Ending balance	133,826,518	136,885,563
Borrowings
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	19,839,652	15,420,176
Cash flows	604,841	4,406,382
Increase	0	0
Effect of exchange rate fluctuations and others	214,888	13,094
Ending balance	20,659,381	19,839,652
Debt securities
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	113,792,178	105,185,189
Cash flows	(4,211,164)	8,286,542
Increase	0	0
Effect of exchange rate fluctuations and others	2,293,005	320,447
Ending balance	111,874,019	113,792,178
Lease liabilities
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	3,807,880	4,163,143
Cash flows	(612,828)	(574,239)
Increase	119,161	253,495
Effect of exchange rate fluctuations and others	385,243	(34,519)
Ending balance	3,699,456	3,807,880
Derivative liabilities (assets), net
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	(554,147)	(591,471)
Cash flows	545,483	332,263
Increase	0	0
Effect of exchange rate fluctuations and others	(2,397,674)	(294,939)
Ending balance	₩ (2,406,338)	₩ (554,147)

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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

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The increase (decrease) in liabilities arising from financing activities resulting from financing cash flows. [Refer: Cash flows from (used in) financing activities; Liabilities arising from financing activities]

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The increase in liabilities arising from financing activities resulting from new leases. [Refer: Liabilities arising from financing activities]

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The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities]

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Increase (decrease) through effect of changes in foreign exchange rates and other changes liabilities arising from financing activities.

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