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Property, Plant and Equipment - Summary of Principal Depreciation Methods and Rates Applied to Major Asset Categories (Detail) | 12 Months Ended
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Jun. 30, 2018
Buildings [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Typical depreciation methodology | SL
Buildings [Member] | Bottom of range [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Depreciation rate | 25 years
Buildings [Member] | Top of range [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Depreciation rate | 50 years
Plant and equipment [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Typical depreciation methodology | SL
Plant and equipment [Member] | Bottom of range [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Depreciation rate | 3 years
Plant and equipment [Member] | Top of range [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Depreciation rate | 30 years
Other mineral assets [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Typical depreciation methodology | UoP
Depreciation rate | Based on the rate of depletion of reserves
Capitalised exploration, evaluation and development expenditure [Member] |
Disclosure of detailed information about property, plant and equipment [Line Items] |
Typical depreciation methodology | UoP
Depreciation rate | Based on the rate of depletion of reserves

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- Definition The depreciation method used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_b&doctype=Standard -URIDate 2017-03-09 + 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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- Definition The useful lives or depreciation rates used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_c&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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- Details
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- Details
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