v3.25.2
Financial Risk Management - Summary of Reconciliation of Components of Equity and Analysis of Movements in Reserves for all Hedges (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items]    
At the beginning of the financial year $ 20 $ 9
At the beginning of the financial year 27 10
At the beginning of the financial year (7) (1)
Add: Change in fair value of hedging instrument recognised in OCI 242 (23)
Less: Reclassified from reserves to financial expenses – recognised through OCI (274) 34
At the end of the financial year 4 (7)
At the end of the financial year (16) 27
At the end of the financial year (12) 20
Cash flow hedging reserve, gross [member]    
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items]    
At the beginning of the financial year 40 15
Add: Change in fair value of hedging instrument recognised in OCI 330 (24)
Less: Reclassified from reserves to financial expenses – recognised through OCI (392) 49
At the end of the financial year (22) 40
Cash flow hedging reserve, tax [member]    
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items]    
At the beginning of the financial year (13) (5)
Add: Change in fair value of hedging instrument recognised in OCI (99) 7
Less: Reclassified from reserves to financial expenses – recognised through OCI 118 (15)
At the end of the financial year 6 (13)
Cash flow hedging reserve, net [member]    
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items]    
At the beginning of the financial year 27 10
Add: Change in fair value of hedging instrument recognised in OCI 231 (17)
Less: Reclassified from reserves to financial expenses – recognised through OCI (274) 34
At the end of the financial year (16) 27
Cost of hedging reserve, gross [member]    
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items]    
At the beginning of the financial year (10) (1)
Add: Change in fair value of hedging instrument recognised in OCI 16 (9)
Less: Reclassified from reserves to financial expenses – recognised through OCI 0 0
At the end of the financial year 6 (10)
Cost of hedging reserve, tax [member]    
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items]    
At the beginning of the financial year 3 0
Add: Change in fair value of hedging instrument recognised in OCI (5) 3
Less: Reclassified from reserves to financial expenses – recognised through OCI 0 0
At the end of the financial year (2) 3
Cost of hedging reserve, net [member]    
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items]    
At the beginning of the financial year (7) (1)
Add: Change in fair value of hedging instrument recognised in OCI 11 (6)
Less: Reclassified from reserves to financial expenses – recognised through OCI 0 0
At the end of the financial year $ 4 $ (7)