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Trade and Other Receivables (Tables) | 12 Months Ended
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Dec. 31, 2017
Subclassifications of assets, liabilities and equities [abstract] |
Trade and Other Receivables |
As at Dec. 31 | 2017 |  | 2016 |
Trade accounts receivable | 693 |  | 446 |
Mississauga recontracting receivable | 108 |  | 112 |
Net trade receivables | 801 |  | 558 |
Collateral paid (Note 14) | 67 |  | 77 |
Current portion of finance lease receivables (Note 7) | 59 |  | 59 |
Current portion of loan receivable (Note 19) | 5 |  | — |
Income taxes receivables | 1 |  | 9 |
Trade and other receivables | 933 |  | 703 |

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