XML 180 R113.htm IDEA: XBRL DOCUMENT v3.22.2.2
Impairment of Non-current Assets - Summary of Impairment of Non-current Assets Excluding Goodwill (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Disclosure of detailed information about impairment of non-current assets excluding goodwill [line items]      
Total impairment of non-current assets $ 515 $ 2,507 $ 482
New South Wales Energy Coal [Member]      
Disclosure of detailed information about impairment of non-current assets excluding goodwill [line items]      
Negative recoverable​ amount​ of asset​ or cash generating​ unit   300  
Total impairment of non-current assets   $ 1,057  
Discount rate applied   6.50%  
Cerrejon [Member]      
Disclosure of detailed information about impairment of non-current assets excluding goodwill [line items]      
Recoverable amount of asset or cash-generating unit   $ 284  
Total impairment of non-current assets   466  
Potash [Member]      
Disclosure of detailed information about impairment of non-current assets excluding goodwill [line items]      
Recoverable amount of asset or cash-generating unit   3,300  
Total impairment of non-current assets   $ 1,314  
Cerro Colorado [Member]      
Disclosure of detailed information about impairment of non-current assets excluding goodwill [line items]      
Total impairment of non-current assets $ 455