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PROPERTY, PLANT AND EQUIPMENT - Schedule of Infrastructure Property, Plant and Equipment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | $ 100,009 |
Balance, end of period | 115,489 | $ 100,009
Costs |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 88,071 |
Balance, end of period | 103,008 | 88,071
Accumulated fair value changes |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 28,384 |
Balance, end of period | 31,074 | 28,384
Accumulated depreciation and amortisation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | (16,446) |
Balance, end of period | (18,593) | (16,446)
Infrastructure |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 32,167 |
Balance, end of period | 38,655 | 32,167
Infrastructure | Costs |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 31,212 | 22,454
Additions, net of disposals and assets reclassified as held for sale | (1,362) | 1,008
Acquisitions through business combinations | 10,179 | 7,334
Foreign currency translation | (260) | 416
Balance, end of period | 39,769 | 31,212
Infrastructure | Accumulated fair value changes |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 4,626 | 3,777
Dispositions and assets reclassified as held for sale | 1,643 | 0
Fair value changes | 172 | 792
Foreign currency translation | (78) | 57
Balance, end of period | 3,077 | 4,626
Infrastructure | Accumulated depreciation and amortisation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | (3,671) | (2,459)
Depreciation expenses | (1,526) | (1,257)
Dispositions and assets reclassified as held for sale | (946) | (170)
Foreign currency translation | 60 | (125)
Balance, end of period | (4,191) | (3,671)
Utilities [Member] | Infrastructure |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 10,610 |
Balance, end of period | 7,936 | 10,610
Utilities [Member] | Infrastructure | Costs |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 9,306 | 8,654
Additions, net of disposals and assets reclassified as held for sale | (1,788) | 550
Acquisitions through business combinations | 180 | 0
Foreign currency translation | (116) | 102
Balance, end of period | 7,582 | 9,306
Utilities [Member] | Infrastructure | Accumulated fair value changes |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 2,917 | 2,187
Dispositions and assets reclassified as held for sale | 1,399 | 0
Fair value changes | 134 | 652
Foreign currency translation | (26) | 78
Balance, end of period | 1,626 | 2,917
Utilities [Member] | Infrastructure | Accumulated depreciation and amortisation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | (1,613) | (1,172)
Depreciation expenses | (352) | (419)
Dispositions and assets reclassified as held for sale | (682) | (12)
Foreign currency translation | 11 | (34)
Balance, end of period | (1,272) | (1,613)
Transport | Infrastructure |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 8,341 |
Balance, end of period | 8,376 | 8,341
Transport | Infrastructure | Costs |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 8,698 | 8,309
Additions, net of disposals and assets reclassified as held for sale | 312 | 146
Acquisitions through business combinations | 134 | 0
Foreign currency translation | (145) | 243
Balance, end of period | 8,999 | 8,698
Transport | Infrastructure | Accumulated fair value changes |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 1,047 | 857
Dispositions and assets reclassified as held for sale | 0 | 0
Fair value changes | 48 | 113
Foreign currency translation | (50) | 77
Balance, end of period | 1,045 | 1,047
Transport | Infrastructure | Accumulated depreciation and amortisation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | (1,404) | (950)
Depreciation expenses | (481) | (498)
Dispositions and assets reclassified as held for sale | (161) | (134)
Foreign currency translation | 56 | (90)
Balance, end of period | (1,668) | (1,404)
Midstream [Member] | Infrastructure |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 4,303 |
Balance, end of period | 14,648 | 4,303
Midstream [Member] | Infrastructure | Costs |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 4,321 | 3,971
Additions, net of disposals and assets reclassified as held for sale | 511 | 277
Acquisitions through business combinations | 9,865 | 0
Foreign currency translation | 165 | 73
Balance, end of period | 14,862 | 4,321
Midstream [Member] | Infrastructure | Accumulated fair value changes |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 338 | 317
Dispositions and assets reclassified as held for sale | 0 | 0
Fair value changes | 70 | 21
Foreign currency translation | 0 | 0
Balance, end of period | 408 | 338
Midstream [Member] | Infrastructure | Accumulated depreciation and amortisation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | (356) | (208)
Depreciation expenses | (270) | (141)
Dispositions and assets reclassified as held for sale | (20) | 0
Foreign currency translation | (16) | (7)
Balance, end of period | (622) | (356)
Data [Member] | Infrastructure |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 8,330 |
Balance, end of period | 7,695 | 8,330
Data [Member] | Infrastructure | Costs |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 8,593 | 1,131
Additions, net of disposals and assets reclassified as held for sale | (103) | 51
Acquisitions through business combinations | 0 | 7,334
Foreign currency translation | (166) | 77
Balance, end of period | 8,324 | 8,593
Data [Member] | Infrastructure | Accumulated fair value changes |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 0 | 0
Dispositions and assets reclassified as held for sale | 0 | 0
Fair value changes | 0 | 0
Foreign currency translation | 0 | 0
Balance, end of period | 0 | 0
Data [Member] | Infrastructure | Accumulated depreciation and amortisation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | (263) | (88)
Depreciation expenses | (419) | (189)
Dispositions and assets reclassified as held for sale | (45) | (17)
Foreign currency translation | 8 | (3)
Balance, end of period | (629) | (263)
Sustainable Resources [Member] | Infrastructure |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 583 |
Balance, end of period | 0 | 583
Sustainable Resources [Member] | Infrastructure | Costs |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 294 | 389
Additions, net of disposals and assets reclassified as held for sale | (294) | (16)
Acquisitions through business combinations | 0 | 0
Foreign currency translation | 2 | (79)
Balance, end of period | 2 | 294
Sustainable Resources [Member] | Infrastructure | Accumulated fair value changes |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | 324 | 416
Dispositions and assets reclassified as held for sale | 244 | 0
Fair value changes | (80) | 6
Foreign currency translation | (2) | (98)
Balance, end of period | (2) | 324
Sustainable Resources [Member] | Infrastructure | Accumulated depreciation and amortisation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Balance, beginning of period | (35) | (41)
Depreciation expenses | (4) | (10)
Dispositions and assets reclassified as held for sale | (38) | (7)
Foreign currency translation | 1 | 9
Balance, end of period | $ 0 | $ (35)

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