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Impairment of Non-current Assets - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
May 02, 2023
Jun. 30, 2024
Jun. 30, 2023
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Goodwill     $ 1,341 $ 1,389
Material impairment loss       0
Impairment charges on property plant and equipment     3,833 73
Impairment charges on intangible assets     $ 57 2
Western Australia Nickel [Member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Discount rate applied     7.50%  
Recoverable amount of asset or cash-generating unit     $ 600  
Impairment charges on property plant and equipment     3,744  
Impairment charges on intangible assets     56  
OZ Minerals Limited [member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Additional recognition, goodwill   $ 194    
OZ Minerals Limited [member] | Western Australia Nickel [Member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Goodwill impairment loss $ 50      
Goodwill allocated   50    
Other Cash Generating Units [Member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Goodwill     187 187
Goodwill impairment loss     $ 0
Other Cash Generating Units [Member] | Top of range [member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Percentage of goodwill included in net assets     1.00% 1.00%
Copper SA [Member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Amount by which unit's recoverable amount exceeds its carrying amount     $ 8,400  
Goodwill     $ 1,154  
Production volume decrease     7.00%  
Copper SA [Member] | OZ Minerals Limited [member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Goodwill     $ 144  
Goodwill allocated   $ 144    
Copper SA [Member] | WMC Resources Ltd [Member]        
Disclosure of detailed information about impairment of noncurrent assets [Line items]        
Goodwill     $ 1,010