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Construction Services Contracts, Continued (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Accumulated earned revenue, expense and others |  |  |
Accumulated earned revenue |  | ₩ 20,971,487 | ₩ 19,801,220
Accumulated expense |  | 19,566,647 | 18,651,188
Accumulated profit |  | 1,404,840 | 1,150,032
Unearned advance receipts |  | 0 | 0
Contract with Customer, Asset and Liability |  |  |
Assets | [1] | 53,827 | 36,232
Liabilities | [2] | ₩ 73,420 | ₩ 350,460
[1] | Included in trade and other receivables, net, in the consolidated statements of financial position. The balance of receivables from construction contracts are KRW35,218 million and KRW46,489 million, as of December 31, 2018 and 2019, respectively.
[2] | Included in non-financial liabilities in the consolidated statements of financial position.

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