v3.26.1
Net Debt - Summary of Maturity Profile of Financial Liabilities Based on the Contractual Amounts (Parenthetical) (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Jun. 30, 2025
Disclosure of financial liabilities [line items]    
Input taxes $ 88 $ 90
Lease liabilities due for payment [1] 4,532 3,993
Other financial liabilities, contractual amount 360 [2] 549
Later than ten years [member]    
Disclosure of financial liabilities [line items]    
Lease liabilities due for payment $ 734 $ 820
[1] Lease liabilities due for payment in more than five years includes US$734 million (2025: US$820 million) due for payment in more than ten years.
[2] Excludes other financial liabilities associated with the Antamina silver streaming agreement, as future repayments are not based on fixed contractual amounts but variable and linked to Antamina's future production.