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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | $ 68,041 | $ 67,182
Impact of adopting IFRS 16 | 2,154 |
Additions | 8,836 | 7,760
Remeasurements of index-linked freight contracts | 733 |
Depreciation for the year | (6,028) | (5,747)
Impairments, net of reversals | (494) | (250)
Disposals | (99) | (47)
Transferred to assets held for sale |  | (331)
Exchange variations taken to reserve |  | (1)
Transfers and other movements | (781) | (525)
At the end of the financial year | 72,362 | 68,041
Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 132,149 |
At the end of the financial year | 141,571 | 132,149
Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | (64,108) |
At the end of the financial year | (69,209) | (64,108)
Land and buildings [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 7,885 | 8,152
Impact of adopting IFRS 16 | 754 |
Additions | 115 | 5
Depreciation for the year | (630) | (585)
Impairments, net of reversals | (17) | (9)
Disposals | (12) | (2)
Transfers and other movements | 292 | 324
At the end of the financial year | 8,387 | 7,885
Land and buildings [member] | Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 12,825 |
At the end of the financial year | 13,932 | 12,825
Land and buildings [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | (4,940) |
At the end of the financial year | (5,545) | (4,940)
Plant and equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 38,174 | 40,885
Impact of adopting IFRS 16 | 1,400 |
Additions | 1,719 | 515
Remeasurements of index-linked freight contracts | 733 |
Depreciation for the year | (5,104) | (4,885)
Impairments, net of reversals | (189) | (234)
Disposals | (22) | (40)
Exchange variations taken to reserve |  | (1)
Transfers and other movements | 2,718 | 1,934
At the end of the financial year | 39,429 | 38,174
Plant and equipment [member] | Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 92,090 |
At the end of the financial year | 97,230 | 92,090
Plant and equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | (53,916) |
At the end of the financial year | (57,801) | (53,916)
Mineral rights and petroleum interests [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 9,211 | 8,974
Additions | 684 | 1,023
Depreciation for the year | (294) | (277)
Impairments, net of reversals | (288) |
Disposals |  | (5)
Transfers and other movements | (661) | (504)
At the end of the financial year | 8,652 | 9,211
Mineral rights and petroleum interests [member] | Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 13,681 |
At the end of the financial year | 13,736 | 13,681
Mineral rights and petroleum interests [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | (4,470) |
At the end of the financial year | (5,084) | (4,470)
Assets under construction [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 11,149 | 7,554
Additions | 6,100 | 5,799
Transferred to assets held for sale |  | (331)
Transfers and other movements | (3,475) | (1,873)
At the end of the financial year | 13,774 | 11,149
Assets under construction [member] | Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 11,149 |
At the end of the financial year | 13,774 | 11,149
Assets under construction [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 0 |
At the end of the financial year |  | 0
Exploration and evaluation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 1,622 | 1,617
Additions | 218 | 418
Impairments, net of reversals |  | (7)
Disposals | (65) |
Transfers and other movements | 345 | (406)
At the end of the financial year | 2,120 | 1,622
Exploration and evaluation [member] | Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | 2,404 |
At the end of the financial year | 2,899 | 2,404
Exploration and evaluation [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
At the beginning of the financial year | (782) |
At the end of the financial year | $ (779) | $ (782)

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- Definition The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_ii&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_98_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2019-03-27 + Details
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