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Segment Reporting - Summary of Geographical Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Disclosure of geographical areas [line items]      
Revenue $ 53,817 $ 65,098 $ 56,921
Non-current assets 77,945 66,502 82,234
Unallocated assets [member]      
Disclosure of geographical areas [line items]      
Non-current assets 1,171 858 3,522
Australia [member]      
Disclosure of geographical areas [line items]      
Revenue 1,702 1,649 1,871
Non-current assets 51,961 43,250 48,612
Europe [member]      
Disclosure of geographical areas [line items]      
Revenue 1,961 2,129 886
China [member]      
Disclosure of geographical areas [line items]      
Revenue 31,205 36,618 39,653
Japan [member]      
Disclosure of geographical areas [line items]      
Revenue 6,971 8,401 4,387
India [member]      
Disclosure of geographical areas [line items]      
Revenue 3,447 5,215 2,189
South Korea [member]      
Disclosure of geographical areas [line items]      
Revenue 2,997 4,786 3,420
Rest of Asia [member]      
Disclosure of geographical areas [line items]      
Revenue 3,583 4,303 2,934
North America [member]      
Disclosure of geographical areas [line items]      
Revenue 1,382 1,282 1,147
Non-current assets 5,081 3,964 9,701
South America [member]      
Disclosure of geographical areas [line items]      
Revenue 569 715 426
Non-current assets 19,047 18,280 18,548
Rest of world [member]      
Disclosure of geographical areas [line items]      
Revenue     8
Non-current assets $ 685 $ 150 $ 1,851