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Other Equity - Summary of Reserves (Detail) - USD ($)
$ in Millions
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Disclosure of analysis of other comprehensive income by item [abstract]      
Share premium account     $ 518
Capital redemption reserve     177
Common control reserve $ (1,603) $ (1,603)  
Employee share awards reserve 171 174 268
Cash flow hedge reserve 10 41 100
Cost of hedging reserve (1) (19) (54)
Foreign currency translation reserve (14) (14) 43
Equity investments reserve 9 (8) 15
Non-controlling interest contribution reserve 1,441 1,441 1,283
Total reserves $ 13 $ 12 $ 2,350