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Risk Management - Summary of Maturity Analysis for Non Derivative Financial Liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | ₩ 138,002,832 | ₩ 91,950,482
Lease liabilities |  | 4,612,352 | 4,928,988
Trade and other payables |  | 13,459,320 | 9,739,421
Financial guarantee contracts | [1] | 3,776,060 | 3,718,015
Non-derivative financial liabilities, undiscounted cash flows |  | 159,850,564 | 110,336,906
Financial guarantee liabilities |  | 67,240 | 80,841
Less than 1 year |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 26,157,747 | 15,833,589
Lease liabilities |  | 639,756 | 620,121
Trade and other payables |  | 11,369,512 | 7,569,869
Financial guarantee contracts | [1] | 105,091 | 435,729
Non-derivative financial liabilities, undiscounted cash flows |  | 38,272,106 | 24,459,308
1~2 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 27,367,577 | 11,229,657
Lease liabilities |  | 657,210 | 636,724
Trade and other payables |  | 347,563 | 777,017
Financial guarantee contracts | [1] | 54,310 | 0
Non-derivative financial liabilities, undiscounted cash flows |  | 28,426,660 | 12,643,398
2~5 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 47,361,676 | 28,663,693
Lease liabilities |  | 1,390,374 | 1,521,421
Trade and other payables |  | 1,008,133 | 725,231
Financial guarantee contracts | [1] | 3,495,437 | 3,105,599
Non-derivative financial liabilities, undiscounted cash flows |  | 53,255,620 | 34,015,944
More than 5 years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 37,115,832 | 36,223,543
Lease liabilities |  | 1,925,012 | 2,150,722
Trade and other payables |  | 734,112 | 667,304
Financial guarantee contracts | [1] | 121,222 | 176,687
Non-derivative financial liabilities, undiscounted cash flows |  | ₩ 39,896,178 | ₩ 39,218,256
[1] | This represents the total guarantee amounts associated with the financial guarantee contracts. Financial guarantee liabilities which are recognized as of December 31, 2021 and 2022 are ￦80,841 million and ￦67,240 million, respectively.

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