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Financial risk management (Tables) | 12 Months Ended
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Dec. 31, 2019
Financial Instruments [Abstract] |
Schedule of interest rate risk exposure | The Company’s interest rate risk exposure is mainly related to long-term debt obligations.
As at | Dec 31 2019 |  | Dec 31 2018 |
Fixed interest rate debt: |  |
Unsecured notes | $ | 1,535,662 |  | $ | 1,189,976 |
Other limited recourse debt facilities | 156,500 |  | 161,601 |
| $ | 1,692,162 |  | $ | 1,351,577 |
Variable interest rate debt: |  |
Egypt limited recourse debt facilities | $ | 75,165 |  | $ | 101,226 |
Other limited recourse debt facilities | 1,526 |  | 5,483 |
| $ | 76,691 |  | $ | 106,709 |
Expected cash flows of financial liabilities by maturity date | The expected cash flows of financial liabilities from the date of the balance sheet to the contractual maturity date are as follows:
As at December 31, 2019 | Carrying amount |  | Contractual cash flows |  |  | 1 year or less |  | 1-3 years |  | 3-5 years |  | More than 5 years |
Trade and other payables 1 | $ | 397,173 |  | $ | 397,173 |  |  | $ | 397,173 |  | $ | — |  | $ | — |  | $ | — |
Lease obligations | 718,505 |  | 1,008,096 |  |  | 134,175 |  | 212,020 |  | 184,051 |  | 477,850 |
Long-term debt 2 | 1,768,853 |  | 2,724,777 |  |  | 129,901 |  | 484,025 |  | 467,933 |  | 1,642,918 |
Cash flow hedges 3 | 195,504 |  | 244,304 |  |  | 17,620 |  | 45,432 |  | 56,887 |  | 124,365 |
| $ | 3,080,035 |  | $ | 4,374,350 |  |  | $ | 678,869 |  | $ | 741,477 |  | $ | 708,871 |  | $ | 2,245,133 |
1 | Excludes tax and accrued interest.
2 | Contractual cash flows include contractual interest payments related to debt obligations and lease obligations. Interest rates on variable rate debt are based on prevailing rates as at December 31, 2019.
3 | Cash flow hedges includes the impact of discounting and credit valuation adjustments

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- Definition The disclosure of how the entity manages its liquidity risk. [Refer: Liquidity risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 39 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_39_c&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The disclosure of information that enables users of financial statements to evaluate the nature and extent of risks arising from financial instruments to which the entity is exposed. [Refer: Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 31 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_31&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Financial instruments [Abstract] + References No definition available. + Details
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