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Lease Liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Disclosure of maturity analysis of operating lease payments [Line Items] |  |
Minimum lease payments |  | ₩ 381,742
Present value of minimum lease payments |  | 283,806
Undiscounted operating lease payments to be received | ₩ 5,757,009 |
Less than 1 year |  |
Disclosure of maturity analysis of operating lease payments [Line Items] |  |
Minimum lease payments |  | 87,709
Present value of minimum lease payments |  | 57,200
Undiscounted operating lease payments to be received | 686,445 |
1~5 Years |  |
Disclosure of maturity analysis of operating lease payments [Line Items] |  |
Minimum lease payments |  | 228,783
Present value of minimum lease payments |  | 170,676
Undiscounted operating lease payments to be received | 2,334,883 |
More than 5 years |  |
Disclosure of maturity analysis of operating lease payments [Line Items] |  |
Minimum lease payments |  | 65,250
Present value of minimum lease payments |  | ₩ 55,930
Undiscounted operating lease payments to be received | ₩ 2,735,681 |

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