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Interests in Joint Operations - Summary of Assets Held in Joint Operations (Detail) - USD ($)
$ in Millions
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Disclosure of significant joint operations [line items]      
Current assets $ 23,351 $ 28,664  
Non-current assets 77,945 66,502 $ 82,234
Total assets 101,296 95,166 $ 108,927
Joint operations [member]      
Disclosure of significant joint operations [line items]      
Current assets 1,561 1,928  
Non-current assets 26,370 26,256  
Total assets $ 27,931 $ 28,184