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Interests In Associates And Joint Venture Entities - Summary of Major Shareholdings in Associates and Joint Venture Entities, Including their Profit/(Loss) (Detail) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Jun. 30, 2022
Disclosure of significant investments in associates and joint ventures [line items]      
Share of profit/(loss) of equity accounted investments $ 153 $ 348 $ 657
Profit/(loss) from equity accounted investments, related impairments and expenses $ 280 $ (354) $ (19)
Compañia Minera Antamina SA [member]      
Disclosure of significant investments in associates and joint ventures [line items]      
Ownership interest 33.75% 33.75% 33.75%
Share of profit/(loss) of equity accounted investments $ 185 $ 381 $ 720
Samarco Mineracao SA [member]      
Disclosure of significant investments in associates and joint ventures [line items]      
Ownership interest 50.00% 50.00% 50.00%
Samarco dam failure provision $ (13) $ (539) $ (663)
Samarco Germano dam decommissioning 31 49 68
Fair value change on forward exchange derivatives 109 (212) (81)
Others [member]      
Disclosure of significant investments in associates and joint ventures [line items]      
Share of profit/(loss) of equity accounted investments $ (32) $ (33) $ (63)