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Revision of prior financial statements | 12 Months Ended
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Dec. 31, 2018
Text block [abstract] |
Revision of prior financial statements |
43. | Revision of prior financial statements
The Group revised the prior period financial statements to correct errors in relation to the under-statement of revenue due to omission of data transferring from billing system to finance system, and the details are as follows: Consolidated Statements of financial position
(In millions of Korean won) |  | January 1, 2017 |  |  | December 31, 2017 |
|  | As Previously Reported |  |  | Adjustments |  |  | As Revised |  |  | As Previously Reported |  |  | Adjustments |  |  | As Revised |
Current assets |  | ￦ | 9,716,020 |  |  | ￦ | 150,282 |  |  | ￦ | 9,866,302 |  |  | ￦ | 9,678,243 |  |  | ￦ | 150,282 |  |  | ￦ | 9,828,525 |
Trade and other receivables |  |  | 5,327,352 |  |  |  | 150,282 |  |  |  | 5,477,634 |  |  |  | 5,814,283 |  |  |  | 150,282 |  |  |  | 5,964,565 |
Total assets |  | ￦ | 30,664,298 |  |  | ￦ | 150,282 |  |  | ￦ | 30,814,580 |  |  | ￦ | 29,745,439 |  |  | ￦ | 150,282 |  |  | ￦ | 29,895,721 |
Current liabilities |  | ￦ | 9,523,137 |  |  | ￦ | 16,058 |  |  | ￦ | 9,539,195 |  |  | ￦ | 9,458,104 |  |  | ￦ | 16,058 |  |  | ￦ | 9,474,162 |
Trade and other payables |  |  | 7,139,771 |  |  |  | 1,954 |  |  |  | 7,141,725 |  |  |  | 7,424,134 |  |  |  | 1,954 |  |  |  | 7,426,088 |
Current income tax liabilities |  |  | 88,739 |  |  |  | 14,104 |  |  |  | 102,843 |  |  |  | 68,880 |  |  |  | 14,104 |  |  |  | 82,984 |
Total liabilities |  | ￦ | 17,881,580 |  |  | ￦ | 16,058 |  |  | ￦ | 17,897,638 |  |  | ￦ | 16,696,309 |  |  | ￦ | 16,058 |  |  | ￦ | 16,712,367 |
Equity attribute to owners of the Controlling Company |  | ￦ | 11,429,874 |  |  | ￦ | 134,224 |  |  | ￦ | 11,564,098 |  |  | ￦ | 11,657,366 |  |  | ￦ | 134,224 |  |  | ￦ | 11,791,590 |
Retained earnings |  |  | 9,644,483 |  |  |  | 134,224 |  |  |  | 9,778,707 |  |  |  | 9,826,926 |  |  |  | 134,224 |  |  |  | 9,961,150 |
Total equity |  |  | 12,782,718 |  |  |  | 134,224 |  |  |  | 12,916,942 |  |  |  | 13,049,130 |  |  |  | 134,224 |  |  |  | 13,183,354 |
Total liabilities and equity |  | ￦ | 30,664,298 |  |  | ￦ | 150,282 |  |  | ￦ | 30,814,580 |  |  | ￦ | 29,745,439 |  |  | ￦ | 150,282 |  |  | ￦ | 29,895,721 |
Consolidated Statement of operations & Comprehensive Income
(In millions of Korean won) |  | Year ended December 31, 2016 |
|  | As Previously Reported |  |  | Adjustments |  |  | As Revised |
Operating revenue |  | ￦ | 23,120,878 |  |  | ￦ | 43,324 |  |  | ￦ | 23,164,202 |
Operating profit |  |  | 1,339,780 |  |  |  | 43,324 |  |  |  | 1,383,104 |
Profit before income tax |  |  | 1,123,431 |  |  |  | 43,324 |  |  |  | 1,166,755 |
Income tax expense |  |  | 328,314 |  |  |  | 6,596 |  |  |  | 334,910 |
Profit for the year |  | ￦ | 795,117 |  |  | ￦ | 36,728 |  |  | ￦ | 831,845 |
Profit for the year attributable to the equity holders of the Controlling Company |  |  | 708,362 |  |  |  | 36,728 |  |  |  | 745,090 |
Total comprehensive income for the year |  | ￦ | 789,447 |  |  | ￦ | 36,728 |  |  | ￦ | 826,175 |
Total comprehensive income for the year attributable to the equity holders of the Controlling Company |  | ￦ | 701,685 |  |  | ￦ | 36,728 |  |  | ￦ | 738,413 |
Consolidated Statements of changes in equity
(In millions of Korean won) |  | As Previously Reported |  |  | Adjustments |  |  | As Revised |
|  | Retained earnings |  |  | Owners of the Controlling Company |  |  | Retained earnings |  |  | Owners of the Controlling Company |  |  | Retained earnings |  |  | Owners of the Controlling Company |
Balance at January 1, 2016 |  | ￦ | 9,049,971 |  |  | ￦ | 10,835,735 |  |  | ￦ | 97,496 |  |  | ￦ | 97,496 |  |  | ￦ | 9,147,467 |  |  | ￦ | 10,933,231 |
Balance at December 31, 2016 |  | ￦ | 9,644,483 |  |  | ￦ | 11,429,874 |  |  | ￦ | 134,224 |  |  | ￦ | 134,224 |  |  | ￦ | 9,778,707 |  |  | ￦ | 11,564,098 |
Balance at December 31, 2017 |  | ￦ | 9,826,926 |  |  | ￦ | 11,657,366 |  |  | ￦ | 134,224 |  |  | ￦ | 134,224 |  |  | ￦ | 9,961,150 |  |  | ￦ | 11,791,590 |
The increase in retained earnings due to revision of prior period financial statements before January 1, 2016 is ￦97,496 million.

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