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Closure and Rehabilitation Provisions - Summary of Closure and Rehabilitation Provisions (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019
Disclosure of other provisions [line items] |  |
Current | $ 2,810 | $ 2,175
Non-current | 11,185 | 8,928
Closure and rehabilitation provisions [member] |  |
Disclosure of other provisions [line items] |  |
At the beginning of the financial year | 6,977 | 6,330
Increases to existing and new provisions | 731 | 318
Exchange translation | (19) | (7)
Released during the year | (43) | (33)
Amortisation of discounting impacting net finance costs | 356 | 353
Utilisation | (258) | (201)
Exchange variations impacting foreign currency translation reserve | (1) | (2)
Divestment and demerger of subsidiaries and operations |  | (80)
Other movements |  | (1)
At the end of the financial year | 8,810 | 6,977
Current | 373 | 361
Non-current | 8,437 | 6,616
Closure and rehabilitation provisions [member] | Operating sites [member] |  |
Disclosure of other provisions [line items] |  |
At the beginning of the financial year | 5,535 |
Change in estimate | 1,255 | 494
Exchange translation | (188) | (194)
At the end of the financial year | 6,636 | 5,535
Closure and rehabilitation provisions [member] | Closed sites [member] |  |
Disclosure of other provisions [line items] |  |
At the beginning of the financial year | 1,442 |
At the end of the financial year | $ 2,174 | $ 1,442

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