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Explanation of initial application of IFRS 16 (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of Explanation of initial application of IFRS 16 [Line Items] |  |  |  |  |
Current non-financial assets (Note 15) |  | ₩ 1,206,377 | ₩ 875,867 | ₩ 878,888 |
Total current assets |  | 19,483,001 | 19,742,047 | 19,745,068 |
Non-current trade and other receivables, net (Notes 5,8,20,45,46 and 47) |  | 2,002,297 | 1,819,835 | 1,819,845 |
Property, plant and equipment, net (Notes 18,24,27 and 49) |  | 164,701,827 | 157,691,141 | 152,743,194 |
Non-current non-financial assets (Note 15) |  | 166,929 | 325,820 | 327,152 |
Total non-current assets |  | 178,114,791 | 170,450,598 | 165,503,993 |
Total Assets (Note 4) |  | 197,597,792 | 190,192,645 | 185,249,061 | ₩ 181,788,915
Trade and other payables, net (Notes 5,22,24,45 and 47) |  | 6,649,402 | 6,915,699 | 6,405,395 |
Total current liabilities |  | 24,231,656 | 22,351,837 | 21,841,533 |
Non-current trade and other payables, net (Notes 5,22,24,45 and 47) |  | 6,965,760 | 7,374,976 | 2,941,696 |
Total non-current liabilities |  | 104,476,487 | 96,748,046 | 92,314,766 |
Total liabilities (Note 4) |  | 128,708,143 | 119,099,883 | 114,156,299 | ₩ 108,824,274
Total liabilities and equity |  | ₩ 197,597,792 | 190,192,645 | ₩ 185,249,061 |
Increase (decrease) due to changes in accounting policy required by IFRSs |  |  |  |  |
Disclosure of Explanation of initial application of IFRS 16 [Line Items] |  |  |  |  |
Current non-financial assets (Note 15) |  |  | (3,021) |  |
Total current assets |  |  | (3,021) |  |
Non-current trade and other receivables, net (Notes 5,8,20,45,46 and 47) |  |  | (10) |  |
Property, plant and equipment, net (Notes 18,24,27 and 49) |  |  | 4,947,947 |  |
Non-current non-financial assets (Note 15) |  |  | (1,332) |  |
Total non-current assets |  |  | 4,946,605 |  |
Total Assets (Note 4) |  |  | 4,943,584 |  |
Trade and other payables, net (Notes 5,22,24,45 and 47) |  |  | 510,304 |  |
Total current liabilities |  |  | 510,304 |  |
Non-current trade and other payables, net (Notes 5,22,24,45 and 47) |  |  | 4,433,280 |  |
Total non-current liabilities |  |  | 4,433,280 |  |
Total liabilities (Note 4) | [1] |  | 4,943,584 |  |
Total liabilities and equity |  |  | ₩ 4,943,584 |  |
[1] | The adjustment from the total liabilities amounting to KRW 4,943,584 is a present value of operating lease payment as of December 31, 2018, discounted by the weighted average interest rate of the lessee's incremental borrowing rates as of January 1, 2019, and deducted by the present value of short-term leases and low-value asset leases payments

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