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Investments in Associates and Joint ventures - Summary of Changes in Unrecognized Accumulated Losses of Equity Accounted Investees due to Discontinue Use of Equity Method (Detail) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 KRW (₩)
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items] |
Beginning balance | ₩ 577,731
Increase | 156,797
Ending balance | 734,528
New Songdo International City Development, LLC [member] |
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items] |
Beginning balance | 112,305
Increase | 32,087
Ending balance | 144,392
UITrans LRT Co., Ltd. [member] |
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items] |
Beginning balance | 48,496
Increase | 2,196
Ending balance | 50,692
FQM Australia Holdings Pty Ltd [member] |
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items] |
Beginning balance | 355,197
Increase | 23,352
Ending balance | 378,549
Others [Member] |
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items] |
Beginning balance | 61,733
Increase | 69,554
Ending balance | 131,287
Nickel Mining Company SAS [member] |
Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees [line items] |
Increase | 29,608
Ending balance | ₩ 29,608

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- Definition Disclosure of detailed information of changes in unrecognized accumulated losses of equity accounted investees. + References No definition available. + Details
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- Definition The amount of the increase and decrease share of unrecognised share of associates & Joint ventures losses if the entity has stopped recognising its share of losses when applying the equity method. + References No definition available. + Details
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- Definition The amount of the unrecognised share of associates & Joint ventures losses if the entity has stopped recognising its share of losses when applying the equity method. + References No definition available. + Details
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- Details
Name: | pkx_AssociatesJointVentureAxis=pkx_NewSongdoInternationalCityDevelopmentLLCMember
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Data Type: | na
Balance Type: |
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- Details
Name: | pkx_AssociatesJointVentureAxis=pkx_UITransLRTCoLtdMember
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Data Type: | na
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- Details
Name: | pkx_AssociatesJointVentureAxis=pkx_FqmAustraliaHoldingsPtyLtdMember
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Data Type: | na
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- Details
Name: | pkx_AssociatesJointVentureAxis=pkx_OthersMember
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Data Type: | na
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- Details
Name: | pkx_AssociatesJointVentureAxis=pkx_NickelMiningCompanySASMember
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Data Type: | na
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