v3.26.1
Financial Risk Management - Summary of Movement of Interest Bearing Liabilities and Related Derivatives (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disclosure of reconciliation of liabilities arising from financing activities [line items]      
Proceeds from interest bearing liabilities $ 3,957 $ 4,129 $ 5,091
Settlements of debt related instruments (22) (147) (321)
Repayment of interest bearing liabilities (2,363) (1,675)  
Change from Net financing cash flows 1,572 2,307  
Bank loans [member]      
Disclosure of reconciliation of liabilities arising from financing activities [line items]      
At the beginning of the financial year 3,731 2,610  
Proceeds from interest bearing liabilities 850 1,150  
Settlements of debt related instruments 0 0  
Repayment of interest bearing liabilities (40) (40)  
Change from Net financing cash flows 810 1,110  
Other movements:      
Interest rate impacts (13) 11  
Foreign exchange impacts 3 7  
Lease additions 0 0  
Remeasurement of index-linked freight contracts 0 0  
Other interest bearing liabilities/derivative related changes 3 (7)  
At the end of the financial year 4,534 3,731 2,610
Notes and debentures [member]      
Disclosure of reconciliation of liabilities arising from financing activities [line items]      
At the beginning of the financial year 17,653 14,932  
Proceeds from interest bearing liabilities 3,107 2,979  
Settlements of debt related instruments 0 0  
Repayment of interest bearing liabilities (1,323) (894)  
Change from Net financing cash flows 1,784 2,085  
Other movements:      
Interest rate impacts (354) 252  
Foreign exchange impacts (154) 369  
Lease additions 0 0  
Remeasurement of index-linked freight contracts 0 0  
Other interest bearing liabilities/derivative related changes 16 15  
At the end of the financial year 18,945 17,653 14,932
Lease Liabilities [member]      
Disclosure of reconciliation of liabilities arising from financing activities [line items]      
At the beginning of the financial year 2,953 3,116  
Proceeds from interest bearing liabilities 0 0  
Settlements of debt related instruments 0 0  
Repayment of interest bearing liabilities (977) (712)  
Change from Net financing cash flows (977) (712)  
Other movements:      
Interest rate impacts 0 0  
Foreign exchange impacts 71 (13)  
Lease additions 1,111 870  
Remeasurement of index-linked freight contracts 340 (297)  
Other interest bearing liabilities/derivative related changes (2) (11)  
At the end of the financial year 3,496 2,953 3,116
Bank overdraft and short-term borrowings [member]      
Disclosure of reconciliation of liabilities arising from financing activities [line items]      
At the beginning of the financial year 1 3  
Proceeds from interest bearing liabilities 0 0  
Settlements of debt related instruments 0 0  
Repayment of interest bearing liabilities 0 0  
Change from Net financing cash flows 0 0  
Other movements:      
Interest rate impacts 0 0  
Foreign exchange impacts 0 0  
Lease additions 0 0  
Remeasurement of index-linked freight contracts 0 0  
Other interest bearing liabilities/derivative related changes (1) (2)  
At the end of the financial year 0 1 3
Other interest bearing liabilities [member]      
Disclosure of reconciliation of liabilities arising from financing activities [line items]      
At the beginning of the financial year 158 57  
Proceeds from interest bearing liabilities 0 0  
Settlements of debt related instruments 0 0  
Repayment of interest bearing liabilities (23) (29)  
Change from Net financing cash flows (23) (29)  
Other movements:      
Interest rate impacts 0 0  
Foreign exchange impacts (1) 0  
Lease additions 0 0  
Remeasurement of index-linked freight contracts 0 0  
Other interest bearing liabilities/derivative related changes 12 130  
At the end of the financial year 146 158 57
Cross currency and interest rate swaps [member]      
Disclosure of reconciliation of liabilities arising from financing activities [line items]      
At the beginning of the financial year 595 1,395  
Proceeds from interest bearing liabilities 0 0  
Settlements of debt related instruments (22) (147)  
Repayment of interest bearing liabilities 0 0  
Change from Net financing cash flows (22) (147)  
Other movements:      
Interest rate impacts 317 (265)  
Foreign exchange impacts 154 (369)  
Lease additions 0 0  
Remeasurement of index-linked freight contracts 0 0  
Other interest bearing liabilities/derivative related changes 23 (19)  
At the end of the financial year $ 1,067 $ 595 $ 1,395