Dividends - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
Aug. 19, 2025 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Disclosure of dividends [line items] | ||||
| Tax rate | 30.00% | 30.00% | 30.00% | |
| Proceeds from cash management related instruments | $ 195 | $ 361 | $ 331 | |
| Major ordinary share transactions [member] | ||||
| Disclosure of dividends [line items] | ||||
| Dividend per share, after period-end | $ 0.60 | $ 0.74 | $ 0.80 | |
| Dividend amount, after period-end | $ 3,045 | $ 3,752 | $ 4,052 | |
| Proceeds from cash management related instruments | $ 107 | |||
| BHP Group Limited [member] | ||||
| Disclosure of dividends [line items] | ||||
| Number of ordinary shares represented by each American Depositary Share | 2 | 2 | 2 | |
| Tax rate | 30.00% | 30.00% | 30.00% | |