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INVESTMENT IN ASSOCIATES AND JOINT VENTURES - Change in Investments (Details) - USD ($) $ in Millions |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Feb. 26, 2021 | Dec. 07, 2020 | Feb. 11, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Reconciliation of changes in associates and joint ventures |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  |  | $ 4,725 |  |  |  | $ 5,528 | $ 4,967 |
Share of earnings for the year |  |  |  |  |  |  |  | 88 | 131 | $ 224
Foreign currency translation and other |  |  |  |  |  |  |  | (323) | (245) |
Share of other comprehensive income |  |  |  |  |  |  |  | 163 | 7 |
Distributions |  |  |  |  |  |  |  | (157) | (167) |
Disposition of interest |  |  |  |  |  |  |  | (336) | 0 |
Held for sale |  |  |  |  |  |  |  | (146) | 0 |
Change in basis of accounting |  |  |  |  |  |  |  | (92) | 466 |
Acquisitions |  |  |  |  |  |  |  | 0 | 369 |
Balance at end of year | $ 4,725 |  |  |  | $ 4,725 |  |  | 4,725 | 5,528 | 4,967
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Disposal of investments in associates and joint ventures |  |  |  |  |  |  |  | 412 | 0 | 135
Repayments of borrowings, classified as financing activities |  |  |  |  |  |  |  | 0 | 339 | $ 288
Change in basis of accounting |  |  |  |  |  |  |  | (92) | 466 |
Acquisitions |  |  |  |  |  |  |  | 0 | 369 |
Australian Export Terminal |  |  |  |  |  |  |  |  |  |
Reconciliation of changes in associates and joint ventures |  |  |  |  |  |  |  |  |  |
Change in basis of accounting |  |  | $ 466 |  |  |  |  |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Disposal of ownership interest, percentage |  |  | 22.00% |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  | 49.00% |  |  |  |  |  |  |
Change in basis of accounting |  |  | $ 466 |  |  |  |  |  |  |
North American gas storage operation |  |  |  |  |  |  |  |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  | 13.00% |  |  |  |
Disposal of investments in associates and joint ventures |  |  |  |  |  | $ 412 |  |  |  |
Gain on sale of investment |  |  |  |  |  | 75 |  |  |  |
North American gas storage operation | Shareholder Loan |  |  |  |  |  |  |  |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Repayments of borrowings, classified as financing activities |  |  |  |  |  | $ 125 |  |  |  |
Australian port operation |  |  |  |  |  |  |  |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  | 50.00% |  |  |  |  |
Disposal of investments in associates and joint ventures |  |  |  |  | $ 300 |  |  |  |  |
Brazil electricity transmission operation |  |  |  |  |  |  |  |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest | 31.00% | 15.00% |  |  |  |  |  |  |  |
U.S. LNG export terminal |  |  |  |  |  |  |  |  |  |
Reconciliation of changes in associates and joint ventures |  |  |  |  |  |  |  |  |  |
Acquisitions |  |  |  |  |  |  | $ 369 |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  |  | 6.00% |  |  |
Acquisitions |  |  |  |  |  |  | $ 369 |  |  |
Proportion of voting rights held in associate |  |  |  |  |  |  | 41.00% |  |  |
North American natural gas transmission operation |  |  |  |  |  |  |  |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Loans and receivables | $ 375 |  |  |  | $ 375 |  |  | $ 375 | $ 500 |
AusNet Services Ltd |  |  |  |  |  |  |  |  |  |
Reconciliation of changes in associates and joint ventures |  |  |  |  |  |  |  |  |  |
Acquisitions |  |  |  | 500 |  |  |  |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisitions |  |  |  | $ 500 |  |  |  |  |  |
Proportion of voting rights held in associate |  |  |  | 10.00% |  |  |  |  |  |

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