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v3.22.1

Deferred Income Tax and Income Tax Expense - Summary of Tax on the Group's Profit Before Tax (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Deferred tax assets and liabilities [abstract] |  |  |
Profit before income tax expense | ₩ 1,978,411 | ₩ 1,031,605 | ₩ 1,015,928
Statutory income tax expense | 533,701 | 273,329 | 269,018
Tax effect |  |  |
Income not taxable for taxation purposes | (4,307) | (24,657) | (1,265)
Non-deductible expenses | 20,570 | 31,741 | 19,543
Tax credit | (31,517) | (47,056) | (39,190)
Additional payment of income taxes | (221) | 429 | 3,832
Tax effect and adjustment on consolidation |  |  |
Goodwill impairment |  | 0 | 159
Eliminated dividend income form subsidiaries | 7,264 | 20,682 | 21,917
Changes of out-side tax effect | 4,738 | 38,552 | 13,539
Intangible Asset impairment and amortization | 796 | 3,790 | 14,052
Reversal expenses of contract cost assets | (2,932) | (6,643) | 11,213
Tax Effect Change In Scope Of Consolidation | (5,128) |  |
Others | (3,948) | (4,818) | 7,242
Income tax expense | ₩ 519,016 | ₩ 285,349 | ₩ 320,060

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