v3.26.1
Revenue - Summary of Revenue by Segment and Asset (Parenthetical) (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disclosure of reportable segments [line items]      
Revenue $ 58,760 $ 51,262 $ 55,658
Group and unallocated items/eliminations [member]      
Disclosure of reportable segments [line items]      
Revenue [1] 256 767 1,474
Only copper [member] | Copper [member]      
Disclosure of reportable segments [line items]      
Revenue 24,485 19,400 16,107
Other metals [member] | Copper [member]      
Disclosure of reportable segments [line items]      
Revenue 4,546 3,130 2,459
Steelmaking Coal [member] | Coal [member]      
Disclosure of reportable segments [line items]      
Revenue 3,804 3,394 5,793
Energy​ coal​ [member] | Coal [member]      
Disclosure of reportable segments [line items]      
Revenue 1,786 1,652 1,873
Western Australia Nickel [member] | Group and unallocated items/eliminations [member]      
Disclosure of reportable segments [line items]      
Revenue 245 758 1,473
Other revenue [member] | Group and unallocated items/eliminations [member]      
Disclosure of reportable segments [line items]      
Revenue $ 11 $ 9 $ 1
[1] Group and unallocated items revenue includes: Western Australia Nickel, which transitioned into temporary suspension in December 2024, of US$245 million (2025: US$758 million; 2024: US$1,473 million) and other revenue US$11 million (2025: US$9 million; 2024: US$1 million).