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SUPPLEMENTAL CASH FLOW INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2018
Cash Flow Statement [Abstract] |
Disclosure of interest and income taxes paid |
|  | For the year ended December 31,
US$ MILLIONS |  | 2018 |  | 2017 |  | 2016
Interest paid |  | $ | 507 |  |  | $ | 451 |  |  | $ | 366 |
Income taxes paid |  | $ | 427 |  |  | $ | 132 |  |  | $ | 33 |
Disclosure of changes in non-cash working capital | Details of “Changes in non-cash working capital, net” on the Consolidated Statements of Cash Flows are as follows:
|  | For the year ended December 31,
US$ MILLIONS |  | 2018 |  | 2017 |  | 2016
Accounts receivable |  | $ | 176 |  |  | $ | (31 | ) |  | $ | 31 |
Prepayments and other |  | 5 |  |  | 4 |  |  | 3 |
Accounts payable and other |  | (305 | ) |  | 158 |  |  | 11 |
Changes in non-cash working capital, net |  | $ | (124 | ) |  | $ | 131 |  |  | $ | 45 |

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- Definition Disclosure of Changes in Non-cash Working Capital [Table Text Block] + References No definition available. + Details
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- Definition Disclosure of Interest and Income Taxes Paid [Table Text Block] + References No definition available. + Details
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