v3.26.1
Working capital - Analysis of expected credit loss allowance for doubtful debts (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disclosure of trade and other receivables [line items]      
Balance at beginning of the year $ (6,965)    
Reclassification to assets held for sale (1,145) $ (257)  
Balance at end of the year (5,924) (6,965)  
Accumulated impairment | Trade receivables      
Disclosure of trade and other receivables [line items]      
Balance at beginning of the year 99 95 $ 112
Exchange differences (10) 1 (3)
Reclassification to assets held for sale (22) 0 0
Income statement charge 6 27 8
Utilised (5) (24) (22)
Balance at end of the year $ 68 $ 99 $ 95