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Closure and Rehabilitation Provisions - Summary of Closure and Rehabilitation Provisions (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Disclosure of other provisions [line items]    
Current $ 4,514 $ 3,965
Non-current 11,973 10,478
Closure and rehabilitation provisions [member]    
Disclosure of other provisions [line items]    
At the beginning of the financial year 8,689 11,910
Increases to existing and new provisions 47 174
Exchange translation (8) (58)
Released during the year (35) (42)
Amortisation of discounting impacting net finance costs 839 554
Divestment and demerger of subsidiaries and operations   (4,477)
Utilisation (273) (316)
Exchange variations impacting foreign currency translation reserve   (3)
Other movements   62
At the end of the financial year 9,887 8,689
Current 520 475
Non-current 9,367 8,214
Closure and rehabilitation provisions [member] | Operating sites [member]    
Disclosure of other provisions [line items]    
At the beginning of the financial year 6,198  
Change in estimate 510 1,579
Exchange translation (50) (694)
At the end of the financial year 7,366 6,198
Closure and rehabilitation provisions [member] | Closed sites [member]    
Disclosure of other provisions [line items]    
At the beginning of the financial year 2,491  
At the end of the financial year 2,521 $ 2,491
OZ Minerals Limited [member] | Closure and rehabilitation provisions [member]    
Disclosure of other provisions [line items]    
Acquisition of subsidiaries and operations $ 168