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Other Assets and Liabilities - Summary of Other Assets and Liabilities (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Other assets |  |  |
Advance payments |  | ₩ 151,266 | ₩ 168,302
Prepaid expenses |  | 100,697 | 66,578
Contract Cost |  | 1,801,244 | 1,804,948
Contract assets | [1] | 745,085 | 586,438
Others |  | 39,979 | 18,747
Less: Non-current |  | (793,948) | (768,661)
Current |  | 2,044,323 | 1,876,352
Other liabilities |  |  |
Advances received | [1] | 372,375 | 328,491
Withholdings |  | 135,160 | 105,415
Unearned revenue | [1] | 35,577 | 29,593
Lease liabilities |  | 1,159,369 | 1,143,640
Contract liabilities | [1] | 323,651 | 384,133
Others |  | 25,757 | 21,597
Less: Non-current |  | (927,596) | (909,570)
Current |  | ₩ 1,124,293 | ₩ 1,103,299
[1] | The amounts include adjustments arising from adoption of IFRS 15 (Note 26).

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