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DISTRIBUTIONS DISTRIBUTIONS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2020
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividends recognised as distributions to owners | $ 287 | $ 271 | $ 574 | $ 541 |
Dividends Paid, Total | 305 | 283 | 608 | 565 |
Quarterly Dividends Recognised As Distributions To Owners Per Share |  |  |  |  | $ 0.5375
Preferred Unitholders Capital [Member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividends recognised as distributions to owners | $ 18 | $ 12 | $ 34 | $ 24 |
Dividends recognised as distributions to owners per share | $ 0.27 | $ 0.24 | $ 0.52 | $ 0.48 |
Limited Partners 1 [Member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividends recognised as distributions to owners | $ 151 | $ 143 | $ 302 | $ 301 |
Dividends recognised as distributions to owners per share | $ 0.51 | $ 0.485 | $ 1.02 | $ 0.970 |
Special General Partner |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividends recognised as distributions to owners | $ 50 | $ 47 | $ 100 | $ 93 |
Dividends recognised as incentive distributions to owners | 50 |  | 100 |  |
Non-controlling Interest - Redeemable Partnership Units [Member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividends recognised as distributions to owners | $ 62 | $ 58 | $ 124 | $ 123 |
Dividends recognised as distributions to owners per share | $ 0.51 | $ 0.485 | $ 1.02 | $ 0.970 |
Non-controlling Interest - Class A Shares, equity [Member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividends recognised as distributions to owners | $ 23 | $ 22 | $ 46 | $ 22 |
Dividends recognised as distributions to owners per share | $ 0.51 | $ 0.485 | $ 1.02 | $ 0.970 |
Number of shares issued |  |  |  |  | 46.3
Non-controlling Interest - Exchange LP Units, equity [Member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividends recognised as distributions to owners | $ 1 | $ 1 | $ (2) | $ 2 |
Dividends recognised as distributions to owners per share | $ 0.51 | $ 0.485 | $ 1.02 | $ 0.970 |

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