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PROPERTY, PLANT AND EQUIPMENT - Net Book Value (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | $ 31,584 |
Ending balance | 38,655 | $ 31,584
Utilities |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 10,610 |
Ending balance | 7,936 | 10,610
Transport |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 8,341 |
Ending balance | 8,376 | 8,341
Midstream |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 4,303 |
Ending balance | 14,648 | 4,303
Data |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 8,330 |
Ending balance | 7,695 | 8,330
Gross Carrying Amount: |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 30,900 | 22,044
Additions, net of disposals | 1,764 | 1,305
Assets held by subsidiaries disposed during the period | (2,315) |
Non-cash additions (disposals) | (517) | (281)
Acquisitions through business combinations | 10,179 | 7,334
Net foreign currency exchange differences | (262) | 498
Ending balance | 39,749 | 30,900
Gross Carrying Amount: | Utilities |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 9,289 | 8,633
Additions, net of disposals | 478 | 535
Assets held by subsidiaries disposed during the period | (2,300) |
Non-cash additions (disposals) | 34 | 15
Acquisitions through business combinations | 180 | 0
Net foreign currency exchange differences | (116) | 106
Ending balance | 7,565 | 9,289
Gross Carrying Amount: | Transport |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 8,697 | 8,309
Additions, net of disposals | 434 | 387
Assets held by subsidiaries disposed during the period | (15) |
Non-cash additions (disposals) | (107) | (241)
Acquisitions through business combinations | 134 | 0
Net foreign currency exchange differences | (145) | 242
Ending balance | 8,998 | 8,697
Gross Carrying Amount: | Midstream |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 4,321 | 3,971
Additions, net of disposals | 423 | 306
Assets held by subsidiaries disposed during the period | 0 |
Non-cash additions (disposals) | 88 | (29)
Acquisitions through business combinations | 9,865 | 0
Net foreign currency exchange differences | 165 | 73
Ending balance | 14,862 | 4,321
Gross Carrying Amount: | Data |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 8,593 | 1,131
Additions, net of disposals | 429 | 77
Assets held by subsidiaries disposed during the period | 0 |
Non-cash additions (disposals) | (532) | (26)
Acquisitions through business combinations | 0 | 7,334
Net foreign currency exchange differences | (166) | 77
Ending balance | 8,324 | 8,593
Accumulated depreciation: |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (3,636) | (2,417)
Assets held by subsidiaries disposed during the period | 675 |
Non-cash additions (disposals) | 188 | 147
Net foreign currency exchange differences | 59 | (135)
Depreciation expense | (1,522) | (1,247)
Disposals | 45 | 16
Ending balance | (4,191) | (3,636)
Accumulated depreciation: | Utilities |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (1,613) | (1,171)
Assets held by subsidiaries disposed during the period | 663 |
Non-cash additions (disposals) | 0 | 0
Net foreign currency exchange differences | 11 | (35)
Depreciation expense | (352) | (419)
Disposals | 19 | 12
Ending balance | (1,272) | (1,613)
Accumulated depreciation: | Transport |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (1,404) | (950)
Assets held by subsidiaries disposed during the period | 12 |
Non-cash additions (disposals) | 140 | 130
Net foreign currency exchange differences | 56 | (90)
Depreciation expense | (481) | (498)
Disposals | 9 | 4
Ending balance | (1,668) | (1,404)
Accumulated depreciation: | Midstream |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (356) | (208)
Assets held by subsidiaries disposed during the period | 0 |
Non-cash additions (disposals) | 3 | 0
Net foreign currency exchange differences | (16) | (7)
Depreciation expense | (270) | (141)
Disposals | 17 | 0
Ending balance | (622) | (356)
Accumulated depreciation: | Data |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (263) | (88)
Assets held by subsidiaries disposed during the period | 0 |
Non-cash additions (disposals) | 45 | 17
Net foreign currency exchange differences | 8 | (3)
Depreciation expense | (419) | (189)
Disposals | 0 | 0
Ending balance | (629) | (263)
Accumulated fair value adjustments: |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 4,320 | 3,386
Assets held by subsidiaries disposed during the period | (1,399) |
Net foreign currency exchange differences | (76) | 148
Fair value adjustments | 252 | 786
Ending balance | 3,097 | 4,320
Accumulated fair value adjustments: | Utilities |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 2,934 | 2,212
Assets held by subsidiaries disposed during the period | (1,399) |
Net foreign currency exchange differences | (26) | 70
Fair value adjustments | 134 | 652
Ending balance | 1,643 | 2,934
Accumulated fair value adjustments: | Transport |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 1,048 | 857
Assets held by subsidiaries disposed during the period | 0 |
Net foreign currency exchange differences | (50) | 78
Fair value adjustments | 48 | 113
Ending balance | 1,046 | 1,048
Accumulated fair value adjustments: | Midstream |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 338 | 317
Assets held by subsidiaries disposed during the period | 0 |
Net foreign currency exchange differences | 0 | 0
Fair value adjustments | 70 | 21
Ending balance | 408 | 338
Accumulated fair value adjustments: | Data |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 0 | 0
Assets held by subsidiaries disposed during the period | 0 |
Net foreign currency exchange differences | 0 | 0
Fair value adjustments | 0 | 0
Ending balance | $ 0 | $ 0

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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 2021-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 75 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_75_a&doctype=Standard -URIDate 2021-03-24 + Details
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