XML 151 R141.htm IDEA: XBRL DOCUMENT
v3.26.1

Borrowings - Schedule Disclosure of Detailed Information about Exchangeable Bonds (Parenthetical) (Detail) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 EUR (€) shares
Disclosure of detailed information about borrowings [line items] |
Number Of Options Redeemed Due To Put Option Exercised By Bond holders | shares | 1,038,800,000
Notional amount | € | € 1,065,900,000

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_NotionalAmount
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options redeemed due to put option exercised by bond holders. + References No definition available. + Details
Name: | pkx_NumberOfOptionsRedeemedDueToPutOptionExercisedByBondHolders
Namespace Prefix: | pkx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration