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Closure and Rehabilitation Provisions - Summary of Closure and Rehabilitation Provisions (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Disclosure of other provisions [line items] |  |
Current | $ 3,696 | $ 2,810
Non-current | 13,799 | 11,185
Closure and rehabilitation provisions [member] |  |
Disclosure of other provisions [line items] |  |
At the beginning of the financial year | 8,810 | 6,977
Increases to existing and new provisions | 564 | 731
Exchange translation | 76 | (19)
Released during the year | (157) | (43)
Amortisation of discounting impacting net finance costs | 380 | 356
Utilisation | (321) | (258)
Exchange variations impacting foreign currency translation reserve | 3 | (1)
Acquisition of subsidiaries and operations | 179 |
Divestment and demerger of subsidiaries and operations | (81) |
At the end of the financial year | 11,910 | 8,810
Current | 591 | 373
Non-current | 11,319 | 8,437
Closure and rehabilitation provisions [member] | Operating sites [member] |  |
Disclosure of other provisions [line items] |  |
At the beginning of the financial year | 6,636 |
Change in estimate | 1,974 | 1,255
Exchange translation | 483 | (188)
At the end of the financial year | 9,279 | 6,636
Closure and rehabilitation provisions [member] | Closed sites [member] |  |
Disclosure of other provisions [line items] |  |
At the beginning of the financial year | 2,174 |
At the end of the financial year | $ 2,631 | $ 2,174

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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