v3.10.0.1

Basis of preparation (Details) $ in Thousands | Jun. 13, 2014 ConcessionalAsset | Sep. 30, 2018 USD ($) | Dec. 31, 2017 USD ($)
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Basis of preparation [Abstract] |  |  |  |
Number of selected assets subject to ROFO Agreement | ConcessionalAsset |  | 4 |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
Contracted concessional assets |  |  | $ 8,606,943 | $ 9,084,270
Deferred tax assets |  |  | 160,106 | 165,136
Long-term project debt |  |  | 4,908,678 | 5,228,917
Grants and other liabilities |  |  | 1,653,451 | 1,636,060
Deferred tax liabilities |  |  | 251,479 | 186,583
Other reserves |  |  | 105,959 | 80,968
Retained earnings |  |  | (363,605) | (477,214)
Contracted concessional financial assets |  |  | $ 855,752 | 936,004
Other Reserves [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
IFRS 9 Adjustments, hedge accounting |  |  |  | 1,326
Retained Earnings [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
IFRS 9 Adjustments, expected credit losses | [1] |  |  | (38,182)
IFRS 9 Adjustments, modifications of financial liabilities |  |  |  | 27,695
IFRS 9 Adjustments, hedge accounting |  |  |  | (1,326)
Long-term Project Debt [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
IFRS 9 Adjustments, modifications of financial liabilities |  |  |  | (39,599)
Grants and Other Liabilities [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
IFRS 16 adjustments |  |  |  | 62,982
Deferred Tax Liabilities [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
IFRS 9 Adjustments, modifications of financial liabilities |  |  |  | 8,849
Contracted Concessional Assets [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
IFRS 9 Adjustments, expected credit losses | [1] |  |  | (53,048)
IFRS 16 adjustments |  |  |  | 62,982
Deferred Tax Assets [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
IFRS 9 Adjustments, expected credit losses | [1] |  |  | 14,866
IFRS 9 Adjustments, modifications of financial liabilities |  |  |  | (3,055)
Restated [Member] |  |  |  |
Summary of adjustments arising from application of IFRS 9 and IFRS 16 [Abstract] |  |  |  |
Contracted concessional assets |  |  |  | 9,094,204
Deferred tax assets |  |  |  | 176,947
Long-term project debt |  |  |  | 5,189,318
Grants and other liabilities |  |  |  | 1,699,042
Deferred tax liabilities |  |  |  | 195,432
Other reserves |  |  |  | 82,294
Retained earnings |  |  |  | $ (489,027)
[1] | The expected credit losses provision only applies to the concessional assets recorded as financial assets for an amount before provision of $936,004 thousand as of December 31, 2017 (see Note 6).

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