XML 220 R120.htm IDEA: XBRL DOCUMENT
v3.19.2

Closure and Rehabilitation Provisions - Additional Information (Detail) - Closure and rehabilitation provisions [member] - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Disclosure of other provisions [line items] |  |  |
Increases to existing and new provisions associated closure and remediation costs charged to the income statement | $ 318 | $ 132 |
Percentage of reasonably possible decrease in real discount rates | 0.50% |  |
Increase in closure and rehabilitation provision due to reasonably possible decrease in real discount rates | $ 618 |  |
Increase in depreciation expense due to reasonably possible decrease in real discount rates | $ 42 |  |
Bottom of range [member] |  |  |
Disclosure of other provisions [line items] |  |  |
Remaining production life | 1 year |  |
Top of range [member] |  |  |
Disclosure of other provisions [line items] |  |  |
Remaining production life | 98 years |  |
Weighted average [member] |  |  |
Disclosure of other provisions [line items] |  |  |
Remaining production life | 32 years |  |
Closed sites [member] |  |  |
Disclosure of other provisions [line items] |  |  |
Increases to existing and new provisions associated closure and remediation costs charged to the income statement | $ 251 | $ (21) | $ 33
Increase in income statement charge due to reasonably possible decrease in real discount rates | 94 |  |
Operating sites [member] |  |  |
Disclosure of other provisions [line items] |  |  |
Increase in property, plant and equipment due to reasonably possible decrease in real discount rates | $ 524 |  |

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- Definition Increase in depreciation expense due to reasonably possible decrease in discount rate. + References No definition available. + Details
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- Definition Increase in expense in respect with closed sites due to reasonably possible decrease in discount rate. + References No definition available. + Details
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- Definition Increase in property, plant and equipment rehab asset relating to operating sites due to reasonably possible decrease in discount rate. + References No definition available. + Details
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- Definition Increase in closure and rehabilitation provision due to reasonably possible decrease in discount rate. + References No definition available. + Details
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- Definition Percentage of reasonably possible decrease in discount rate. + References No definition available. + Details
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- Definition The amount of additional other provisions made. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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