Share Capital - Additional Information (Detail) - BHP Group Limited [member] - $ / shares |
Jun. 30, 2026 |
Apr. 30, 2026 |
Aug. 31, 2025 |
Jun. 30, 2025 |
Apr. 30, 2025 |
Aug. 31, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Aug. 31, 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Disclosure of classes of share capital [line items] | |||||||||
| Number of shares issued | 5,399,471 | 4,461,418 | 5,710,261 | ||||||
| BHP Group Limited Employee Equity Trust and Computershare Nominees CI Ltd [member] | |||||||||
| Disclosure of classes of share capital [line items] | |||||||||
| Number of shares issued | 2,478,531 | 2,091,047 | 2,791,030 | ||||||
| Shares issued price per shares | $ 50.37 | $ 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 | 2,920,940 | 2,370,371 | 2,919,231 | ||||||
| Shares issued price per shares | $ 41.47 | $ 40.84 | $ 43.52 |