v3.26.1
Revenue - Summary of Revenue by Segment and Asset (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
Revenue [member]      
Disclosure of reportable segments [line items]      
Revenue 58,760 51,262 55,658
Operating segments [member] | Copper [member]      
Disclosure of reportable segments [line items]      
Revenue [1] 29,031 22,530 18,566
Operating segments [member] | Copper [member] | Revenue [member]      
Disclosure of reportable segments [line items]      
Revenue 29,031 22,530 18,566
Operating segments [member] | Copper [member] | Escondida [member]      
Disclosure of reportable segments [line items]      
Revenue 17,054 13,177 10,013
Operating segments [member] | Copper [member] | Pampa Norte [member]      
Disclosure of reportable segments [line items]      
Revenue 2,857 2,726 2,375
Operating segments [member] | Copper [member] | Copper South Australia [member]      
Disclosure of reportable segments [line items]      
Revenue 6,011 4,655 4,085
Operating segments [member] | Copper [member] | Third party products [member]      
Disclosure of reportable segments [line items]      
Revenue 2,996 1,845 2,021
Operating segments [member] | Copper [member] | Other [member]      
Disclosure of reportable segments [line items]      
Revenue 113 127 72
Operating segments [member] | Iron Ore [member]      
Disclosure of reportable segments [line items]      
Revenue 23,883 22,919 27,952
Operating segments [member] | Iron Ore [member] | Revenue [member]      
Disclosure of reportable segments [line items]      
Revenue 23,883 22,919 27,952
Operating segments [member] | Iron Ore [member] | Western Australia Iron Ore [member]      
Disclosure of reportable segments [line items]      
Revenue 23,726 22,767 27,805
Operating segments [member] | Iron Ore [member] | Third party products [member]      
Disclosure of reportable segments [line items]      
Revenue 19 28 25
Operating segments [member] | Iron Ore [member] | Other [member]      
Disclosure of reportable segments [line items]      
Revenue 138 124 122
Operating segments [member] | Coal [member]      
Disclosure of reportable segments [line items]      
Revenue [2] 5,590 5,046 7,666
Operating segments [member] | Coal [member] | Revenue [member]      
Disclosure of reportable segments [line items]      
Revenue 5,590 5,046 7,666
Operating segments [member] | Coal [member] | BHP Mitsubishi Alliance [Member]      
Disclosure of reportable segments [line items]      
Revenue [3] 3,876 3,422 5,873
Operating segments [member] | Coal [member] | New South Wales Energy Coal [member]      
Disclosure of reportable segments [line items]      
Revenue 1,714 1,624 1,793
Group and unallocated items/eliminations [member]      
Disclosure of reportable segments [line items]      
Revenue [4] 256 767 1,474
Group and unallocated items/eliminations [member] | Revenue [member]      
Disclosure of reportable segments [line items]      
Revenue $ 256 $ 767 $ 1,474
[1] Total Copper revenue includes: copper US$24,485 million (2025: US$19,400 million; 2024: US$16,107 million) and other US$4,546 million (2025: US$3,130 million; 2024: US$2,459 million). Other consists of gold, silver, uranium, zinc and molybdenum.
[2] Total Coal revenue includes: steelmaking coal US$3,804 million (2025: US$3,394 million; 2024: US$5,793 million) and energy coal US$1,786 million (2025: US$1,652 million; 2024: US$1,873 million).
[3] Includes Blackwater and Daunia revenue until their divestment on 2 April 2024.
[4] 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).