v3.8.0.1

Derivative financial instruments, Breakdown of maturities of notional and fair value amounts (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Loss on cash flow hedges | $ 70,953 | $ 72,774 | $ 55,841
Cap [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 756,339 | 478,314 |
Fair value | $ 8,230 | $ 3,822 |
Cap [Member] | Up to 1 Year [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 42,324 | 24,261 |
Fair value | $ 347 | $ 250 |
Cap [Member] | Between 1 and 2 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 45,422 | 25,934 |
Fair value | $ 978 | $ 262 |
Cap [Member] | Between 2 and 3 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 48,215 | 27,880 |
Fair value | $ 396 | $ 275 |
Cap [Member] | Subsequent Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 620,378 | 400,239 |
Fair value | $ 6,509 | $ 3,035 |
Swap [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 2,231,611 | 1,860,355 |
Fair value | $ (329,731) | $ (349,266) |
Swap [Member] | Up to 1 Year [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 139,939 | 75,837 |
Fair value | $ (13,224) | $ (12,383) |
Swap [Member] | Between 1 and 2 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 94,285 | 199,832 |
Fair value | $ (14,378) | $ (14,927) |
Swap [Member] | Between 2 and 3 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 103,536 | 83,897 |
Fair value | $ (15,923) | $ (13,957) |
Swap [Member] | Subsequent Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 1,893,850 | 1,500,789 |
Fair value | $ (286,206) | $ (307,999) |
Interest Rate Derivatives [Member] | Euros [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Maturity date | 2030 |  |
Interest Rate Derivatives [Member] | Euros [Member] | Bottom of Range [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Percentage of notional amount of project debt hedged | 87.00% |  |
Average guaranteed interest rates | 3.20% |  |
Interest Rate Derivatives [Member] | Euros [Member] | Top of Range [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Percentage of notional amount of project debt hedged | 100.00% |  |
Average guaranteed interest rates | 4.87% |  |
Interest Rate Derivatives [Member] | U.S. Dollars [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Maturity date | 2032 |  |
Interest Rate Derivatives [Member] | U.S. Dollars [Member] | Bottom of Range [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Percentage of notional amount of project debt hedged | 70.00% |  |
Average guaranteed interest rates | 2.32% |  |
Interest Rate Derivatives [Member] | U.S. Dollars [Member] | Top of Range [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Percentage of notional amount of project debt hedged | 100.00% |  |
Average guaranteed interest rates | 5.27% |  |
Interest Rate Derivatives [Member] | Cash Flow Hedge [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Loss on cash flow hedges | $ (70,953) | (72,774) | (55,841)
Gain (loss) on net amount of time value component | 860 | 1,694 | $ 4,234
After-tax result accumulated in equity | $ 80,968 | $ 52,797 |

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- Definition The percentage of the notional amounts of debt issued at the project level under project finance that the entity hedges. + References No definition available. + Details
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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2016-01-13 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2016-03-30&anchor=para_7&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The fair value of financial assets. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2016-01-13 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2016-03-30&anchor=para_25&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The gain (loss) on the change in fair value of the hedged item used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 7 -IssueDate 2016-01-13 -Paragraph 24B -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2016-03-30&anchor=para_24B_a_iv&doctype=Standard -URIDate 2016-03-31 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 7 -IssueDate 2016-01-13 -Paragraph 24B -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2016-03-30&anchor=para_24B_b_i&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The gains (losses) recognised in other comprehensive income on cash flow hedges, before tax. [Refer: Cash flow hedges [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2016-01-13 -Paragraph 23 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2016-03-30&anchor=para_23_c&doctype=Standard -URIDate 2016-03-31 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 91 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_91_b&doctype=Standard -URIDate 2016-03-31 + Details
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