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Consolidated Statements of Changes in Equity - KRW (₩) ₩ in Millions | Total | Share capital [member] | Share premium [member] | Retained earnings [member] | Accumulated other comprehensive income [member] | Other components of equity [member] | Total attributable to owners of the Controlling Company [member] | Non-controlling interest [member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (Adjusted [member]) at Dec. 31, 2017 | ₩ 14,232,276 | ₩ 1,564,499 | ₩ 1,440,258 | ₩ 10,915,203 | ₩ 48,726 | ₩ (1,205,302) | ₩ 12,763,384 | ₩ 1,468,892
Beginning balance at Dec. 31, 2017 | 13,183,354 | 1,564,499 | 1,440,258 | 9,961,150 | 30,985 | (1,205,302) | 11,791,590 | 1,391,764
Changes in value of available-for-sale financial assets | Increase (decrease) due to changes in accounting policy required by IFRSs [member] | 1,048,922 |  |  | 954,053 | 17,741 |  | 971,794 | 77,128
Comprehensive income |  |  |  |  |  |  |  |
Profit for the year | 719,412 |  |  | 645,571 |  |  | 645,571 | 73,841
Remeasurements of net defined benefit liabilities | (73,511) |  |  | (61,449) |  |  | (61,449) | (12,062)
Share of gain on remeasurements of associates and joint ventures | (816) |  |  | (816) |  |  | (816) |
Share of other comprehensive income of associates and joint ventures | (41) |  |  |  | (136) |  | (136) | 95
Valuation gains (losses) on cashflow hedge | (27,011) |  |  |  | (27,011) |  | (27,011) |
Gain(loss) on disposal of equity instruments at fair value through other comprehensive income |  |  |  | 4,441 | (4,441) |  |  |
Gain on valuation of financial instruments at fair value through other comprehensive income | 43,811 |  |  |  | 30,731 |  | 30,731 | 13,080
Exchange differences on translation of foreign operations | 2,940 |  |  |  | 2,289 |  | 2,289 | 651
Total comprehensive income for the year | 664,784 |  |  | 587,747 | 1,432 |  | 589,179 | 75,605
Transactions with equity holders |  |  |  |  |  |  |  |
Dividends paid by the Controlling Company | (245,097) |  |  | (245,097) |  |  | (245,097) |
Dividends paid to non-controlling interest of subsidiaries | (53,535) |  |  |  |  |  |  | (53,535)
Changes in consolidation scope | (1,701) |  |  |  |  | (1,803) | (1,803) | 102
Changes in ownership interest in subsidiaries | 48,589 |  |  |  |  | 11,118 | 11,118 | 37,471
Appropriation of loss on disposal of treasury stock |  |  |  | (2,046) |  | 2,046 |  |
Disposal of treasury stock | 9,547 |  |  |  |  | 9,547 | 9,547 |
Others | 3,627 |  |  | 262 |  | 3,311 | 3,573 | 54
Subtotal | (238,570) |  |  | (246,881) |  | 24,219 | (222,662) | (15,908)
Ending balance (Adjusted [member]) at Dec. 31, 2018 | 14,654,600 | 1,564,499 | 1,440,258 | 11,252,179 | 50,158 | (1,181,083) | 13,126,011 | 1,528,589
Ending balance at Dec. 31, 2018 | 14,658,490 | 1,564,499 | 1,440,258 | 11,256,069 | 50,158 | (1,181,083) | 13,129,901 | 1,528,589
Changes in value of available-for-sale financial assets | Increase (decrease) due to changes in accounting policy required by IFRSs [member] | (3,890) |  |  | (3,890) |  |  | (3,890) |
Comprehensive income |  |  |  |  |  |  |  |
Profit for the year | 695,868 |  |  | 645,703 |  |  | 645,703 | 50,165
Remeasurements of net defined benefit liabilities | (25,777) |  |  | (22,774) |  |  | (22,774) | (3,003)
Share of gain on remeasurements of associates and joint ventures | 649 |  |  | 636 |  |  | 636 | 13
Share of other comprehensive income of associates and joint ventures | 2,517 |  |  |  | 2,427 |  | 2,427 | 90
Valuation gains (losses) on cashflow hedge | 22,864 |  |  |  | 22,850 |  | 22,850 | 14
Gain on valuation of financial instruments at fair value through other comprehensive income | 167,152 |  |  |  | 114,869 |  | 114,869 | 52,283
Exchange differences on translation of foreign operations | 4,933 |  |  |  | 4,630 |  | 4,630 | 303
Total comprehensive income for the year | 868,206 |  |  | 623,565 | 144,776 |  | 768,341 | 99,865
Transactions with equity holders |  |  |  |  |  |  |  |
Dividends paid by the Controlling Company | (269,659) |  |  | (269,659) |  |  | (269,659) |
Dividends paid to non-controlling interest of subsidiaries | (35,500) |  |  |  |  |  |  | (35,500)
Changes in consolidation scope | 1,539 |  |  |  |  | (245) | (245) | 1,784
Changes in ownership interest in subsidiaries | (83,660) |  |  |  |  | (9,082) | (9,082) | (74,578)
Appropriation of loss on disposal of treasury stock |  |  |  | (15,169) |  | 15,169 |  |
Disposal of treasury stock | 3,346 |  |  |  |  | 3,346 | 3,346 |
Others | 1,812 |  |  |  |  | 1,812 | 1,812 |
Subtotal | (382,122) |  |  | (284,828) |  | 11,000 | (273,828) | (108,294)
Ending balance at Dec. 31, 2019 | 15,140,684 | 1,564,499 | 1,440,258 | 11,590,916 | 194,934 | (1,170,083) | 13,620,524 | 1,520,160
Comprehensive income |  |  |  |  |  |  |  |
Profit for the year | 746,256 |  |  | 700,889 |  |  | 700,889 | 45,367
Remeasurements of net defined benefit liabilities | (60,181) |  |  | (49,554) |  |  | (49,554) | (10,627)
Share of gain on remeasurements of associates and joint ventures | 786 |  |  | 410 |  |  | 410 | 376
Share of other comprehensive income of associates and joint ventures | 15,932 |  |  |  | 14,701 |  | 14,701 | 1,231
Valuation gains (losses) on cashflow hedge | 27,387 |  |  |  | 27,433 |  | 27,433 | (46)
Gain on valuation of financial instruments at fair value through other comprehensive income | 41,997 |  |  | 184,215 | (150,135) |  | 34,080 | 7,917
Exchange differences on translation of foreign operations | (2,666) |  |  |  | (882) |  | (882) | (1,784)
Total comprehensive income for the year | 769,511 |  |  | 835,960 | (108,883) |  | 727,077 | 42,434
Transactions with equity holders |  |  |  |  |  |  |  |
Dividends paid by the Controlling Company | (269,766) |  |  | (269,766) |  |  | (269,766) |
Dividends paid to non-controlling interest of subsidiaries | (40,802) |  |  |  |  |  |  | (40,802)
Changes in ownership interest in subsidiaries | 29,825 |  |  |  |  | 11,628 | 11,628 | 18,197
Appropriation of loss on disposal of treasury stock |  |  |  | (1,690) |  | 1,690 |  |
Acquisition of treasury stock | (110,097) |  |  |  |  | (110,097) | (110,097) |
Disposal of treasury stock | 33,213 |  |  |  |  | 33,213 | 33,213 |
Others | (1,135) |  |  |  |  | (1,135) | (1,135) |
Subtotal | (358,762) |  |  | (271,456) |  | (64,701) | (336,157) | (22,605)
Ending balance at Dec. 31, 2020 | ₩ 15,551,433 | ₩ 1,564,499 | ₩ 1,440,258 | ₩ 12,155,420 | ₩ 86,051 | ₩ (1,234,784) | ₩ 14,011,444 | ₩ 1,539,989

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