XML 177 R116.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Closure and Rehabilitation Provisions - Additional Information (Detail) - Closure and rehabilitation provisions [Member] - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Disclosure of other provisions [Line Items] |  |  |
Increases to existing and new provisions associated closure and remediation costs charged to the income statement | $ 132 | $ 127 |
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 | $ 604 |  |
Increase in depreciation expense due to reasonably possible decrease in real discount rates | $ 46 |  |
Bottom of range [Member] |  |  |
Disclosure of other provisions [Line Items] |  |  |
Remaining production life | 2 years |  |
Top of range [Member] |  |  |
Disclosure of other provisions [Line Items] |  |  |
Remaining production life | 127 years |  |
Weighted average [Member] |  |  |
Disclosure of other provisions [Line Items] |  |  |
Remaining production life | 29 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 | $ (21) | $ 33 | $ 18
Increase in income statement charge due to reasonably possible decrease in real discount rates | 80 |  |
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 2017-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_84_b&doctype=Standard -URIDate 2017-03-09 + Details
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- Details
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- Details
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- Details
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