Earnings Per Share - Summary of Reconciliation of Earnings Attributable to Ordinary Shareholders (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Earnings per share [line items] | |||
| Earnings attributable to BHP shareholders | $ 9,019 | $ 7,897 | $ 12,921 |
| (Gain)/loss on sales of property, plant and equipment, intangibles and investments | (3) | (29) | (9) |
| Impairments of property, plant and equipment and intangibles net of reversals | 154 | 3,905 | 75 |
| Loss/(gain) on disposal of subsidiaries and operations | 117 | (915) | |
| Tax effect of above adjustments | (34) | (928) | (17) |
| Subtotal of adjustments | 234 | 2,033 | 49 |
| Headline earnings | 9,253 | 9,930 | 12,970 |
| Diluted headline earnings | $ 9,253 | $ 9,930 | $ 12,970 |