v3.26.1
Equity - Schedule of movements in hedging and exchange reserve (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disclosure of reserves within equity [line items]      
Beginning balance $ 13,178 $ 12,070 $ 11,709
Other comprehensive income/(loss) (233) 803 (485)
Equity at end of period 12,954 13,178 12,070
Derivatives in net investment hedges of foreign operations      
Disclosure of reserves within equity [line items]      
cost of hedging 24 3  
Hedging reserve      
Disclosure of reserves within equity [line items]      
Beginning balance 218 139 293
Other comprehensive income/(loss) (10) 79 (154)
Equity at end of period 208 218 139
Exchange reserve      
Disclosure of reserves within equity [line items]      
Beginning balance (3,846) (4,312) (3,699)
Other comprehensive income/(loss) (454) 466 (613)
Equity at end of period (4,300) (3,846) (4,312)
Hedging and exchange reserve      
Disclosure of reserves within equity [line items]      
Beginning balance (3,628) (4,173) (3,406)
Other comprehensive income/(loss) (464) 545 (767)
Equity at end of period $ (4,092) $ (3,628) $ (4,173)