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PROPERTY, PLANT AND EQUIPMENT - Schedule of Renewable Property, Plant and Equipment (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | $ 115,489 | $ 100,009 |
Gross carrying amount [member] |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 103,008 | 88,071 |
Accumulated fair value changes |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 31,074 | 28,384 |
Accumulated depreciation and amortisation |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | (18,593) | (16,446) |
Renewable Power |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 50,317 | 45,206 |
Renewable Power | Gross carrying amount [member] |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 30,588 | 28,838 | $ 27,820
Additions, net of disposals and assets reclassified as held for sale | 475 | 700 |
Acquisitions through business combinations, property, plant and equipment | 2,366 | 661 |
Foreign currency translation | (1,091) | (343) |
Renewable Power | Accumulated fair value changes |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 28,138 | 24,238 | 20,465
Foreign currency translation | (565) | (380) |
Fair value changes | 4,819 | 4,153 |
Disposals, property, plant and equipment | (354) |  |
Renewable Power | Accumulated depreciation and amortisation |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | (8,409) | (7,870) | (6,690)
Foreign currency translation | 156 | 134 |
Disposals, property, plant and equipment | 815 | 51 |
Depreciation expenses | (1,510) | (1,365) |
Hydroelectric [Member] | Renewable Power |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 32,693 | 29,033 |
Hydroelectric [Member] | Renewable Power | Gross carrying amount [member] |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 13,871 | 13,899 | 14,074
Additions, net of disposals and assets reclassified as held for sale | 734 | 425 |
Acquisitions through business combinations, property, plant and equipment | 0 | 0 |
Foreign currency translation | (762) | (600) |
Hydroelectric [Member] | Renewable Power | Accumulated fair value changes |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 23,973 | 19,865 | 16,927
Foreign currency translation | (473) | (283) |
Fair value changes | 4,581 | 3,221 |
Hydroelectric [Member] | Renewable Power | Accumulated depreciation and amortisation |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | (5,151) | (4,731) | (4,412)
Foreign currency translation | 114 | 181 |
Disposals, property, plant and equipment | 22 | 17 |
Depreciation expenses | (556) | (517) |
Wind Energy, Solar and Other | Renewable Power |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 9,408 | 9,013 |
Wind Energy, Solar and Other | Renewable Power | Gross carrying amount [member] |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 9,033 | 8,398 | 8,459
Additions, net of disposals and assets reclassified as held for sale | (907) | (9) |
Acquisitions through business combinations, property, plant and equipment | 1,643 | 0 |
Foreign currency translation | (101) | (52) |
Wind Energy, Solar and Other | Renewable Power | Accumulated fair value changes |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 2,461 | 2,908 | 2,588
Foreign currency translation | (49) | (82) |
Fair value changes | (44) | 402 |
Disposals, property, plant and equipment | (354) |  |
Wind Energy, Solar and Other | Renewable Power | Accumulated depreciation and amortisation |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | (2,086) | (2,293) | (1,781)
Foreign currency translation | 14 | 9 |
Disposals, property, plant and equipment | 792 | 25 |
Depreciation expenses | (599) | (546) |
Solar and Other [Member] | Renewable Power |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 8,216 | 7,160 |
Solar and Other [Member] | Renewable Power | Gross carrying amount [member] |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 7,684 | 6,541 | 5,287
Additions, net of disposals and assets reclassified as held for sale | 648 | 284 |
Acquisitions through business combinations, property, plant and equipment | 723 | 661 |
Foreign currency translation | (228) | 309 |
Solar and Other [Member] | Renewable Power | Accumulated fair value changes |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | 1,704 | 1,465 | 950
Foreign currency translation | (43) | (15) |
Fair value changes | 282 | 530 |
Solar and Other [Member] | Renewable Power | Accumulated depreciation and amortisation |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |
Property, plant and equipment | (1,172) | (846) | $ (497)
Foreign currency translation | 28 | (56) |
Disposals, property, plant and equipment | 1 | 9 |
Depreciation expenses | $ (355) | $ (302) |

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- Definition The increase in property, plant and equipment resulting from acquisitions 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 2021-01-01 -Paragraph 73 -Subparagraph e -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e_iii&doctype=Standard -URIDate 2021-03-24 + Details
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