Share Capital - Additional Information (Detail) - BHP Group Limited [member] - $ / shares |
Jun. 30, 2025 |
Apr. 30, 2025 |
Aug. 31, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Aug. 31, 2023 |
Jun. 30, 2023 |
Aug. 31, 2022 |
|---|---|---|---|---|---|---|---|---|
| Disclosure of classes of share capital [line items] | ||||||||
| Number of shares issued | 4,461,418 | 5,710,261 | 3,497,366 | |||||
| BHP Group Limited Employee Equity Trust and Computershare Nominees CI Ltd [member] | ||||||||
| Disclosure of classes of share capital [line items] | ||||||||
| Number of shares issued | 2,091,047 | 2,791,030 | ||||||
| Shares issued price per shares | $ 39.62 | $ 43.79 | ||||||
| BHP Group Limited Employee Equity Trust And Solium Nominees Australia Pty Ltd [Member] | ||||||||
| Disclosure of classes of share capital [line items] | ||||||||
| Number of shares issued | 2,370,371 | 2,919,231 | 3,497,366 | |||||
| Shares issued price per shares | $ 40.84 | $ 43.52 | $ 40.51 |