v3.25.2
Deferred Tax Balances - Summary of Composition of Net Deferred Tax Assets and Liabilities and Deferred Tax Expense Charged/(Credited) to Income Statement (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets $ 78 $ 67  
Deferred tax liabilities 3,506 3,332  
Charged/(credited) to the income statement 177 (988) $ 387
Depreciation [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets (893) (756)  
Deferred tax liabilities 5,284 5,221  
Charged/(credited) to the income statement 213 (894) 452
Exploration expenditure [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 17 14  
Charged/(credited) to the income statement (2) (2) (2)
Employee benefits [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 35 23  
Deferred tax liabilities (477) (407)  
Charged/(credited) to the income statement (78) 6 (94)
Closure and rehabilitations [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 195 155  
Deferred tax liabilities (1,826) (1,770)  
Charged/(credited) to the income statement (96) (29) (296)
Other provisions [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 47 55  
Deferred tax liabilities (202) (196)  
Charged/(credited) to the income statement 2 23 4
Deferred income [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities (9) (23)  
Charged/(credited) to the income statement 14 (9) 37
Deferred charges [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets (31) (55)  
Deferred tax liabilities 551 522  
Charged/(credited) to the income statement 5 (148) 85
Investments, including foreign tax credits [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 281 274  
Deferred tax liabilities 516 411  
Charged/(credited) to the income statement 96 (6) (54)
Foreign exchange gains and losses [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets (14) (9)  
Deferred tax liabilities 85 80  
Charged/(credited) to the income statement 9 (115) 42
Tax losses [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 491 364  
Deferred tax liabilities (38) (84)  
Charged/(credited) to the income statement (80) 40 37
Lease liability [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 23 9  
Deferred tax liabilities (735) (730)  
Charged/(credited) to the income statement (19) 45 (83)
Other [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets (73) (7)  
Deferred tax liabilities 357 308  
Charged/(credited) to the income statement $ 113 $ 101 $ 259