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Risk Management - Summary of Maturity Analysis for Non Derivative Financial Liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | ₩ 155,124,645 | ₩ 138,002,832
Lease liabilities |  | 4,235,100 | 4,612,352
Trade and other payables | [1] | 10,264,050 | 13,459,320
Financial guarantee contracts | [2] | 4,399,189 | 3,776,060
Non-derivative financial liabilities, undiscounted cash flows |  | 174,022,984 | 159,850,564
Financial guarantee liabilities |  | 49,992 | 67,240
Less than 1 year |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 50,878,929 | 26,157,747
Lease liabilities |  | 641,525 | 639,756
Trade and other payables | [1] | 8,477,209 | 11,369,512
Financial guarantee contracts | [2] | 121,415 | 105,091
Non-derivative financial liabilities, undiscounted cash flows |  | 60,119,078 | 38,272,106
1~2 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 29,046,036 | 27,367,577
Lease liabilities |  | 588,850 | 657,210
Trade and other payables | [1] | 364,443 | 347,563
Financial guarantee contracts | [2] | 2,546,689 | 54,310
Non-derivative financial liabilities, undiscounted cash flows |  | 32,546,018 | 28,426,660
2~5 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 42,420,850 | 47,361,676
Lease liabilities |  | 1,309,996 | 1,390,374
Trade and other payables | [1] | 833,394 | 1,008,133
Financial guarantee contracts | [2] | 1,645,488 | 3,495,437
Non-derivative financial liabilities, undiscounted cash flows |  | 46,209,728 | 53,255,620
More than 5 years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 32,778,830 | 37,115,832
Lease liabilities |  | 1,694,729 | 1,925,012
Trade and other payables | [1] | 589,004 | 734,112
Financial guarantee contracts | [2] | 85,597 | 121,222
Non-derivative financial liabilities, undiscounted cash flows |  | ₩ 35,148,160 | ₩ 39,896,178
[1] | Excludes lease liabilities.
[2] | This represents the total guarantee amounts associated with the financial guarantee contracts. Financial guarantee liabilities which are recognized as of December 31, 2022 and 2023 are W67,240 and ￦49,992 million, respectively.

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