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INVESTMENT IN ASSOCIATES AND JOINT VENTURES - Cash Flows Impact of Investments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |
Cash from operating activities | $ 2,530 | $ 2,143 | $ 1,362
Cash used by investing activities | (4,609) | (11,372) | (5,564)
Cash from financing activities | 2,126 | 9,542 | 4,418
Change during the year | 47 | 313 | 216
Total |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |
Cash from operating activities | 2,603 | 1,688 | 1,806
Cash used by investing activities | (2,785) | (4,935) | 4,571
Cash from financing activities | 978 | 3,665 | (6,374)
Change during the year | 796 | 418 | 3
Other Ownership Interests | 681 | 422 | (10)
Partnership's Share | 115 | (4) | 13
Utilities |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |
Cash from operating activities | 184 | 108 | 380
Cash used by investing activities | (697) | (1,109) | 6,189
Cash from financing activities | 285 | 1,548 | (6,716)
Change during the year | (228) | 547 | (147)
Other Ownership Interests | (199) | 471 | (106)
Partnership's Share | (29) | 76 | (41)
Transport |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |
Cash from operating activities | 1,189 | 692 | 776
Cash used by investing activities | (1,039) | (852) | (1,018)
Cash from financing activities | 826 | 11 | 369
Change during the year | 976 | (149) | 127
Other Ownership Interests | 843 | (76) | 77
Partnership's Share | 133 | (73) | 50
Midstream |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |
Cash from operating activities | 378 | 357 | 320
Cash used by investing activities | (314) | (267) | (288)
Cash from financing activities | (56) | (95) | (46)
Change during the year | 8 | (5) | (14)
Other Ownership Interests | 3 | (3) | (10)
Partnership's Share | 5 | (2) | (4)
Data |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |
Cash from operating activities | 852 | 531 | 323
Cash used by investing activities | (735) | (2,707) | (305)
Cash from financing activities | (77) | 2,201 | 19
Change during the year | 40 | 25 | 37
Other Ownership Interests | 34 | 30 | 29
Partnership's Share | 6 | (5) | 8
Corporate |  |  |
Disclosure Of Associates And Joint Ventures [Line Items] |  |  |
Cash from operating activities | 0 | 0 | 7
Cash used by investing activities | 0 | 0 | (7)
Cash from financing activities | 0 | 0 | 0
Change during the year | 0 | 0 | 0
Other Ownership Interests | 0 | 0 | 0
Partnership's Share | $ 0 | $ 0 | $ 0

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- Definition The cash flows from (used in) financing activities, which are activities that result in changes in the size and composition of the contributed equity and borrowings of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_10&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 50 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_50_d&doctype=Standard -URIDate 2020-01-01 + Details
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