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Other Components of Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure of reserves within equity [abstract] |
Summary of Other Components of Equity |
(1) | Other components of equity of the parent as of December 31, 2020 and 2021 are as follows:
|  |  |  |  | 2020 |  |  | 2021 |
|  |  |  |  | In millions of won |
Other capital surplus |  | ￦ |  |  |  |  | 1,224,105 |  |  |  | 1,231,109 |
Accumulated other comprehensive income (loss) |  |  |  |  |  |  | (409,577 | ) |  |  | (57,632 | )
Other equity |  |  |  |  |  |  | 13,294,973 |  |  |  | 13,294,973 |
|  | ￦ |  |  |  |  | 14,109,501 |  |  |  | 14,468,450 |
Summary of Changes in Other Capital Surplus |
(2) | Changes in other capital surplus for the years ended December 31, 2020 and 2021 are as follows:
|  |  |  |  | 2020 |  |  | 2021 |
|  |  |  | Gains on disposal of treasury stocks |  |  | Others |  |  | Subtotal |  |  | Gains on disposal of treasury stocks |  |  | Others |  |  | Subtotal |
|  |  |  |  | In millions of won |
Beginning balance |  | ￦ |  |  |  |  | 387,524 |  |  |  | 838,840 |  |  |  | 1,226,364 |  |  |  | 387,524 |  |  |  | 836,581 |  |  |  | 1,224,105 |
Changes in consolidation scope |  |  |  |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 43 |  |  |  | 43 |
Issuance of share capital of subsidiary |  |  |  |  |  |  | — |  |  |  | (148 | ) |  |  | (148 | ) |  |  | — |  |  |  | (491 | ) |  |  | (491 | )
Others |  |  |  |  |  |  | — |  |  |  | (2,111 | ) |  |  | (2,111 | ) |  |  | — |  |  |  | 7,452 |  |  |  | 7,452 |
Ending balance |  | ￦ |  |  |  |  | 387,524 |  |  |  | 836,581 |  |  |  | 1,224,105 |  |  |  | 387,524 |  |  |  | 843,585 |  |  |  | 1,231,109 |
Summary of Changes in Accumulated Other Comprehensive Income (Loss) |
(3) | Changes in accumulated other comprehensive income (loss) for the years ended December 31, 2020 and 2021 are as follows:
|  |  |  |  | 2020 |
|  |  |  |  | Financial asset at fair value through other comprehensive income valuation reserve |  |  | Shares in other comprehensive income of investments in associates and joint ventures |  |  | Reserve for overseas operations translation credit |  |  | Reserve for gain (loss) on valuation of derivatives |  |  | Total |
|  |  |  |  | In millions of won |
Beginning balance |  | ￦ |  |  |  |  | (92,599 | ) |  |  | 142,896 |  |  |  | (294,898 | ) |  |  | (36,129 | ) |  |  | (280,730 | )
Changes in the unrealized fair value of financial assets at FVOCI, net of tax |  |  |  |  |  |  | (8,533 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (8,533 | )
Shares in other comprehensive Income(loss) of associates and joint ventures, net of tax |  |  |  |  |  |  | — |  |  |  | (132,805 | ) |  |  | — |  |  |  | — |  |  |  | (132,805 | )
Foreign currency translation of foreign operations, net of tax |  |  |  |  |  |  | — |  |  |  | — |  |  |  | (46,032 | ) |  |  | — |  |  |  | (46,032 | )
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax |  |  |  |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 58,523 |  |  |  | 58,523 |
Ending balance |  | ￦ |  |  |  |  | (101,132 | ) |  |  | 10,091 |  |  |  | (340,930 | ) |  |  | 22,394 |  |  |  | (409,577 | )
|  |  |  |  | 2021 |
|  |  |  |  | Financial assets at fair value through other comprehensive income valuation reserve |  |  | Shares in other comprehensive income of investments in associates and joint ventures |  |  | Reserve for overseas operations translation credit |  |  | Reserve for gain (loss) on valuation of derivatives |  |  | Total |
|  |  |  |  | In millions of won |
Beginning balance |  | ￦ |  |  |  |  | (101,132 | ) |  |  | 10,091 |  |  |  | (340,930 | ) |  |  | 22,394 |  |  |  | (409,577 | )
Changes in the unrealized fair value of financial assets at FVOCI, net of tax |  |  |  |  |  |  | 59,022 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 59,022 |
Shares in other comprehensive income of associates and joint ventures, net of tax |  |  |  |  |  |  | — |  |  |  | 301,161 |  |  |  | — |  |  |  | — |  |  |  | 301,161 |
Foreign currency translation of foreign operations, net of tax |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 15,760 |  |  |  | — |  |  |  | 15,760 |
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax |  |  |  |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (19,610 | ) |  |  | (19,610 | )
Others |  |  |  |  |  |  | (4,388 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (4,388 | )
Ending balance |  | ￦ |  |  |  |  | (46,498 | ) |  |  | 311,252 |  |  |  | (325,170 | ) |  |  | 2,784 |  |  |  | (57,632 | )
Summary of Changes in Other equity |
(4) | Other equity as of December 31, 2020 and 2021 are as follows:
|  |  |  |  | 2020 |  |  | 2021 |
|  |  |  |  | In millions of won |
Statutory revaluation reserve |  | ￦ |  |  |  |  | 13,295,098 |  |  |  | 13,295,098 |
Changes in other equity |  |  |  |  |  |  | (125 | ) |  |  | (125 | )
|  | ￦ |  |  |  |  | 13,294,973 |  |  |  | 13,294,973 |

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