XML 54 R47.htm IDEA: XBRL DOCUMENT v3.22.4
Significant Events - Summary of Provision for Samarco Dam Failure (Detail) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Dec. 31, 2022
Jun. 30, 2022
Disclosure of other provisions [line items]    
Current $ 4,104 $ 3,965
Non-current 10,717 10,478
Samarco dam failure [member]    
Disclosure of other provisions [line items]    
At the beginning of the reporting period 3,421 2,792
Movement in provisions (135) 629
Utilised (339) (256)
Change in estimate - Samarco dam failure provision   747
Change in estimate - Samarco Germano dam decommissioning (33) (56)
Amortisation of discounting impacting net finance costs 222 290
Exchange translation 15 (96)
Current 1,950 1,815
Non-current 1,336 1,606
At the end of the reporting period 3,286 3,421
Samarco dam failure provision 3,122 3,237
Samarco Germano dam decommissioning provision $ 164 $ 184