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Interests in Joint Operations - Summary of Assets Held in Joint Operations (Detail) - USD ($)
$ in Millions
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Disclosure of significant joint operations [line items]      
Current assets $ 28,664 $ 26,693  
Non-current assets 66,502 82,234 $ 84,262
Total assets 95,166 108,927 $ 105,733
Joint operations [member]      
Disclosure of significant joint operations [line items]      
Current assets 1,928 2,260  
Non-current assets 26,256 38,725  
Total assets $ 28,184 $ 40,985