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Net Defined Benefit Liabilities - Summary of Remeasurements of the Net Defined Benefit Liabilities Recognized in Other Comprehensive Income (Loss) (Details)
$ in Thousands, ₩ in Millions
12 Months Ended
Dec. 31, 2023
KRW (₩)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
KRW (₩)
Dec. 31, 2021
KRW (₩)
Remeasurement Of Net Defined Benefit Liability Asset Recognized As Other Comprehensive Income [Abstract]        
Return on plan assets (excluding amounts included in interest income) ₩ 18,228   ₩ (68,550) ₩ (9,438)
Actuarial gains and losses (120,846)   399,633 (55,703)
Income tax effect 25,895   (91,150) 18,638
Effect of exchange differences 4,553   (232) 993
Remeasurements after income tax expense ₩ (72,170) $ (55,904) ₩ 239,701 [1] ₩ (45,510) [2]
[1] Comparative data for the year ended 31 December 2022 have been restated due to the application of IFRS No.17.
[2] Comparative data for the year ended 31 December 2021 are prepared on an IFRS No.4 basis.