v3.10.0.1

Derivative financial instruments, Breakdown of maturities of notional and fair value amounts (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Loss on cash flow hedges | $ 67,519 | $ 70,953 | $ 72,774
Cap [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 672,997 | 756,339 |
Fair value | $ 11,571 | $ 8,230 |
Cap [Member] | Up to 1 Year [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 42,846 | 42,324 |
Fair value | $ 493 | $ 347 |
Cap [Member] | Between 1 and 2 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 45,603 | 45,422 |
Fair value | $ 2,172 | $ 978 |
Cap [Member] | Between 2 and 3 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 48,774 | 48,215 |
Fair value | $ 562 | $ 396 |
Cap [Member] | Subsequent Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 535,774 | 620,378 |
Fair value | $ 8,344 | $ 6,509 |
Swap [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 2,305,641 | 2,231,611 |
Fair value | $ (279,152) | $ (329,731) |
Swap [Member] | Up to 1 Year [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 93,440 | 139,939 |
Fair value | $ (11,848) | $ (13,224) |
Swap [Member] | Between 1 and 2 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 119,568 | 94,285 |
Fair value | $ (13,231) | $ (14,378) |
Swap [Member] | Between 2 and 3 Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 234,572 | 103,536 |
Fair value | $ (15,151) | $ (15,923) |
Swap [Member] | Subsequent Years [Member] |  |  |
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract] |  |  |
Notionals | 1,858,061 | 1,893,850 |
Fair value | $ (238,922) | $ (286,206) |
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 | 81.00% |  |
Average guaranteed interest rates | 0.60% |  |
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 | 2034 |  |
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 | $ (67,519) | (70,953) | (72,774)
Gain (loss) on net amount of time value component | (560) | (860) | $ 1,694
After-tax result accumulated in equity | $ 95,011 | $ 80,968 |

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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 2018-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard -URIDate 2018-03-16 + 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 2018-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_25&doctype=Standard -URIDate 2018-03-16 + 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 -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 24B -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_24B_a_iv&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 24B -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_24B_b_i&doctype=Standard -URIDate 2018-03-16 + 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 -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 91 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_91_b&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 23 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_23_c&doctype=Standard&book=b -URIDate 2018-03-16 + Details
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