v3.25.2
Closure and Rehabilitation Provisions - Summary of Closure and Rehabilitation Provisions (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Disclosure of other provisions [line items]    
Current $ 5,823 $ 4,007
Non-current 13,498 15,088
Closure and rehabilitation provisions [member]    
Disclosure of other provisions [line items]    
At the beginning of the financial year 9,837 9,887
Amortisation of discounting impacting net finance costs 510 556
Divestment of subsidiaries and operations   (652)
Utilisation (468) (395)
Other movements 1 (2)
At the end of the financial year 10,468 9,837
Current 662 610
Non-current 9,806 9,227
Closure and rehabilitation provisions [member] | Operating sites [member]    
Disclosure of other provisions [line items]    
At the beginning of the financial year 6,349  
Change in estimate 548 463
Exchange translation (61) (58)
At the end of the financial year 6,908 6,349
Closure and rehabilitation provisions [member] | Closed and contaminated sites rehabilitation asset [member]    
Disclosure of other provisions [line items]    
At the beginning of the financial year 3,488  
Change in estimate 112 85
Exchange translation (11) (47)
At the end of the financial year $ 3,560 $ 3,488