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PROPERTY, PLANT AND EQUIPMENT - Property, Plant and Equipment by Type (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | $ 13,806 | $ 14,103
Additions | 1,228 | 2,343
Capitalized Interest | 9 | 0
Disposals | (7) | (1,197)
Depreciation | (1,562) | (1,697)
Impairment reversals (charges) | 648 | 254
Transfers | 0 | 0
Property, plant and equipment | 12,826 | 13,806
Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | 49,784 | 49,523
Property, plant and equipment | 50,984 | 49,784
Accumulated depreciation and impairments |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | (35,978) | (35,420)
Property, plant and equipment | (38,158) | (35,978)
Buildings, plant and equipment |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | 4,213 | 4,556
Additions | (21) | 158
Capitalized Interest | 0 |
Disposals | (7) | (72)
Depreciation | (790) | (878)
Impairment reversals (charges) | 394 | (102)
Transfers | 599 | 551
Property, plant and equipment | 3,600 | 4,213
Buildings, plant and equipment | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | 14,209 | 14,111
Property, plant and equipment | 14,750 | 14,209
Buildings, plant and equipment | Accumulated depreciation and impairments |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | (9,996) | (9,555)
Property, plant and equipment | (11,150) | (9,996)
MIning property costs subject to depreciation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | 6,522 | 7,194
Additions | 199 | 219
Capitalized Interest | 0 |
Disposals | 0 | (194)
Depreciation | (772) | (819)
Impairment reversals (charges) | 178 | (359)
Transfers | 487 | 481
Property, plant and equipment | 6,258 | 6,522
MIning property costs subject to depreciation | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | 20,938 | 20,778
Property, plant and equipment | 21,624 | 20,938
MIning property costs subject to depreciation | Accumulated depreciation and impairments |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | (14,416) | (13,584)
Property, plant and equipment | (15,366) | (14,416)
MIning property costs not subject to depreciation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | 3,071 | 2,353
Additions | 1,050 | 1,966
Capitalized Interest | 9 |
Disposals | 0 | (931)
Depreciation | 0 | 0
Impairment reversals (charges) | 76 | 715
Transfers | (1,086) | (1,032)
Property, plant and equipment | 2,968 | 3,071
MIning property costs not subject to depreciation | Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | 14,637 | 14,634
Property, plant and equipment | 14,610 | 14,637
MIning property costs not subject to depreciation | Accumulated depreciation and impairments |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment | (11,566) | (12,281)
Property, plant and equipment | $ (11,642) | $ (11,566)

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2018-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_e_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2018-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_e_vii&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2018-01-01 -Paragraph 75 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_75_a&doctype=Standard -URIDate 2018-03-16 + 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 2018-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_e_v&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_98_a&doctype=Standard -URIDate 2018-03-16 + Details
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