KT Corporation
CIK 0000892450 · QID Q485908
Industry: Telephone Communications (No Radiotelephone)
| Fact | Value | Period | Source |
|---|---|---|---|
| common_shares_outstanding | {"unit": "shares", "value": 241095063, "concept": "dei:EntityCommonStockSharesOutstanding" | 2025-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 245832946, "concept": "dei:EntityCommonStockSharesOutstanding" | 2024-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 246413422, "concept": "dei:EntityCommonStockSharesOutstanding" | 2023-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 256042678, "concept": "dei:EntityCommonStockSharesOutstanding" | 2022-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 235808146, "concept": "dei:EntityCommonStockSharesOutstanding" | 2021-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 241842130, "concept": "dei:EntityCommonStockSharesOutstanding" | 2020-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 245241550, "concept": "dei:EntityCommonStockSharesOutstanding" | 2019-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 245144768, "concept": "dei:EntityCommonStockSharesOutstanding" | 2018-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 245097055, "concept": "dei:EntityCommonStockSharesOutstanding" | 2017-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 241095063} | 2025-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 245832946} | 2024-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 246413422} | 2023-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 256042678} | 2022-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 235808146} | 2021-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 241842130} | 2020-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 245241550} | 2019-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 245144768} | 2018-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 245097055} | 2017-12-31 | sec_edgar |
| industry_sic | {"code": "4813", "scheme": "SIC", "description": "Telephone Communications (No Radioteleph | sec_edgar | |
| observed_web_domain | {"via": "wikidata:P856", "domain": "kt.com"} | robots_obs | |
| website | {"qid": "Q485908", "url": "http://www.kt.com/eng/", "via": "wikidata"} | wikidata | |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 571513000000} | 2024-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 1302620000000} | 2023-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 1891392000000} | 2022-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 1978411000000} | 2021-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 1031605000000} | 2020-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 1015928000000} | 2019-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 1033977000000} | 2018-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 816997000000} | 2017-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 1166755000000} | 2016-12-31 | sec_edgar |
| xbrl:AccountingProfit | {"unit": "KRW", "value": 710741000000} | 2015-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 1293627000000} | 2024-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 1267700000000} | 2023-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 1234023000000} | 2022-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 1037616000000} | 2021-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 933978000000} | 2020-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 987624000000} | 2019-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 904135000000} | 2018-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 1011089000000} | 2017-12-31 | sec_edgar |
| xbrl:Accruals | {"unit": "KRW", "value": 1061002000000} | 2016-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 63729000000} | 2024-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 52407000000} | 2023-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": -77776000000} | 2022-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 117469000000} | 2021-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 86051000000} | 2020-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 194934000000} | 2019-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 50158000000} | 2018-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 30985000000} | 2017-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": -1432000000} | 2017-01-01 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": -1432000000} | 2016-12-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncome | {"unit": "KRW", "value": 13870000000} | 2015-12-31 | sec_edgar |
| xbrl:AcquisitiondateFairValueOfTotalConsiderationTransferred | {"unit": "KRW", "value": 46800000000} | 2020-12-31 | sec_edgar |
| xbrl:AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination | {"unit": "KRW", "value": 201461000000} | 2020-12-31 | sec_edgar |
| xbrl:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill | {"unit": "KRW", "value": 1331172000000} | 2018-12-31 | sec_edgar |
| xbrl:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill | {"unit": "KRW", "value": 386711000000} | 2017-12-31 | sec_edgar |
| xbrl:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill | {"unit": "KRW", "value": 1124327000000} | 2016-12-31 | sec_edgar |
| xbrl:AcquisitionsThroughBusinessCombinationsInvestmentProperty | {"unit": "KRW", "value": 48850000000} | 2017-12-31 | sec_edgar |
| xbrl:AcquisitionsThroughBusinessCombinationsInvestmentProperty | {"unit": "KRW", "value": 160606000000} | 2016-12-31 | sec_edgar |
| xbrl:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 2631431000000} | 2017-12-31 | sec_edgar |
| xbrl:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 2695147000000} | 2016-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfDiscountRates | {"value": 0.0193} | 2020-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfDiscountRates | {"value": 0.0197} | 2019-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfDiscountRates | {"value": 0.0232} | 2018-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfDiscountRates | {"value": 0.0276} | 2017-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfDiscountRates | {"value": 0.0243} | 2016-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfDiscountRates | {"value": 0.0243} | 2015-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases | {"value": 0.0488} | 2020-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases | {"value": 0.0492} | 2019-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases | {"value": 0.0508} | 2018-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases | {"value": 0.0451} | 2017-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases | {"value": 0.041} | 2016-12-31 | sec_edgar |
| xbrl:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases | {"value": 0.0406} | 2015-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 3311157000000} | 2024-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 3556910000000} | 2023-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 3346251000000} | 2022-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 3311895000000} | 2021-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 3583273000000} | 2020-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 5198228000000} | 2019-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 5107863000000} | 2018-12-31 | sec_edgar |
| xbrl:ActuarialPresentValueOfPromisedRetirementBenefits | {"unit": "KRW", "value": 4713478000000} | 2017-12-31 | sec_edgar |
| xbrl:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets | {"unit": "KRW", "value": 523799000000} | 2017-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill | {"unit": "KRW", "value": 221245000000} | 2024-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill | {"unit": "KRW", "value": 309737000000} | 2023-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill | {"unit": "KRW", "value": 346989000000} | 2022-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill | {"unit": "KRW", "value": 1720619000000} | 2021-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill | {"unit": "KRW", "value": 165630000000} | 2020-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill | {"unit": "KRW", "value": 178694000000} | 2019-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill | {"unit": "KRW", "value": 1331172000000} | 2018-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 2908510000000} | 2024-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 3189108000000} | 2023-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 3346380000000} | 2022-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 3128093000000} | 2021-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 3151849000000} | 2020-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 3693428000000} | 2019-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 2287630000000} | 2018-12-31 | sec_edgar |
| xbrl:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment | {"unit": "KRW", "value": 2631431000000} | 2017-12-31 | sec_edgar |
| xbrl:AdditionsToRightofuseAssets | {"unit": "KRW", "value": -2090000000} | 2022-12-31 | sec_edgar |
| xbrl:AdditionsToRightofuseAssets | {"unit": "KRW", "value": -4261000000} | 2021-12-31 | sec_edgar |
| xbrl:AdditionsToRightofuseAssets | {"unit": "KRW", "value": -5824000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 246004585} | 2024-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 249589335} | 2023-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 242327263} | 2022-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 235685542} | 2021-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 245276905} | 2020-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 245241550} | 2019-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 245050629} | 2018-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 245097055} | 2017-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 84245} | 2016-12-31 | sec_edgar |
| xbrl:AdjustedWeightedAverageShares | {"unit": "shares", "value": 1104} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": -67598000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": -317531000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": -179255000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": 32798000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": 288507000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": 240488000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": -480543000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": -205403000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": 167873000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInInventories | {"unit": "KRW", "value": -270343000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": 77878000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": 250569000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": -101947000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": -89230000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": 9089000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": 984000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": -123258000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": 11792000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": 48549000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets | {"unit": "KRW", "value": -19701000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": -79503000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": -124023000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": -43787000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": 327031000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": 66462000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": -433292000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": -81217000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": -303340000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": 216818000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"unit": "KRW", "value": 112674000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2866974000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2773152000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2687191000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2643894000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2635307000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2567754000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2735413000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2802531000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 2821779000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForDepreciationExpense | {"unit": "KRW", "value": 3030821000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 70914000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 59758000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 14121000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 21525000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 4442000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 3408000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 2910000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": 4785000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": -3926000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForDividendIncome | {"unit": "KRW", "value": -11371000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": 19057000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": 6982000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": 38024000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": -1000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": 111000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": 30000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": -3737000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": 979000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": -1450000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"unit": "KRW", "value": -4848000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": -13894000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": -511000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": 66317000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": -17410000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": 55590000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": 49284000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": 68688000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": 150293000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": 74913000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"unit": "KRW", "value": 129466000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 184942000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 175244000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 132102000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 105344000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 139957000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 60193000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 113064000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 45704000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 92711000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"unit": "KRW", "value": 161448000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 164845000000} | 2024-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 335367000000} | 2023-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 505757000000} | 2022-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 519016000000} | 2021-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 285349000000} | 2020-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 320060000000} | 2019-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 314565000000} | 2018-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 270656000000} | 2017-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 334910000000} | 2016-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncomeTaxExpense | {"unit": "KRW", "value": 346146000000} | 2015-12-31 | sec_edgar |
| xbrl:AdjustmentsForIncreaseDecreaseInDeferredIncome | {"unit": "KRW", "value": -1948000000} | 2020-12-31 | sec_edgar |
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