Employee Share Ownership Plans - Summary of Employee Share Awards (Parenthetical) (Detail)	Jun. 30, 2025 Awards
BHP Group Limited [member] \| Management Award Plan [member]
Statements [Line Items]
Number of share options exercisable in share-based payment arrangement	10,214

The number of share options exercisable in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2024-01-01
-Paragraph 45
-Subparagraph b
-Clause vii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_b_vii&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant