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Trade and other receivables (Tables) | 12 Months Ended
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Dec. 31, 2018
Subclassifications of assets, liabilities and equities [abstract] |
Schedule of trade and other receivables |
As at | Dec 31 2018 |  | Dec 31 2017 |
Trade | $ | 412,662 |  | $ | 429,582 |
Value-added and other tax receivables | 37,823 |  | 36,584 |
Egypt gas contract recoveries(a) | 6,227 |  | 24,466 |
Other | 57,856 |  | 46,004 |
| $ | 514,568 |  | $ | 536,636 |
a) Egypt gas contract recoveries: The natural gas supply agreement in Egypt has a mechanism whereby the Company is partially compensated when gas delivery shortfalls exceed a certain threshold. The receivable is secured by a combination of funds held in escrow and a bank guarantee.

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