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Other-Financial Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Other Financial Assets [Line Items] |  |  |
Current Other financial assets |  | ₩ 1,415,204 | ₩ 1,991,939
Non-Current Other financial assets |  | 1,283,730 | 1,044,762
Loans and receivables |  |  |
Other Financial Assets [Line Items] |  |  |
Current Other financial assets |  | 63,233 | 122,653
Non-Current Other financial assets |  | 675,474 | 596,021
Loans and receivables | Gross amount |  |  |
Other Financial Assets [Line Items] |  |  |
Current Other financial assets |  | 64,111 | 123,657
Non-Current Other financial assets |  | 725,755 | 639,673
Loans and receivables | Allowance for doubtful accounts |  |  |
Other Financial Assets [Line Items] |  |  |
Current Other financial assets |  | (31) | (12)
Non-Current Other financial assets |  | (15,063) | (4,940)
Loans and receivables | Present value discount |  |  |
Other Financial Assets [Line Items] |  |  |
Current Other financial assets |  | (847) | (992)
Non-Current Other financial assets |  | (35,218) | (38,712)
Short-term financial instruments |  |  |
Other Financial Assets [Line Items] |  |  |
Current Other financial assets | [1] | 1,351,971 | 1,869,286
Long-term financial instruments |  |  |
Other Financial Assets [Line Items] |  |  |
Non-Current Other financial assets | [1] | 608,256 | 448,741
Financial assets at fair value through profit or loss |  |  |
Other Financial Assets [Line Items] |  |  |
Current Other financial assets |  | 0 | 0
Non-Current Other financial assets |  | ₩ 0 | ₩ 0
[1] | From prior year, certain financial assets at fair value previously recognized as other financial assets is reclassified to financial assets at fair value through profit or loss upon the adoption of IFRS 9 'Financial Instruments'.

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