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Income and expenses - Sale by Geographical Area (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Sales by Geographical Area |  |  |  |  |
Sales | $ 2,274,038 | $ 1,741,693 | [1] | $ 1,576,037 | [1]
Spain |  |  |  |  |
Sales by Geographical Area |  |  |  |  |
Sales | 274,769 | 253,991 |  | 201,403 |
Germany |  |  |  |  |
Sales by Geographical Area |  |  |  |  |
Sales | 359,737 | 245,152 |  | 241,046 |
Italy |  |  |  |  |
Sales by Geographical Area |  |  |  |  |
Sales | 138,796 | 94,590 |  | 90,267 |
Other EU Countries |  |  |  |  |
Sales by Geographical Area |  |  |  |  |
Sales | 487,340 | 340,877 |  | 236,746 |
USA |  |  |  |  |
Sales by Geographical Area |  |  |  |  |
Sales | 674,243 | 547,309 |  | 563,619 |
Rest of World |  |  |  |  |
Sales by Geographical Area |  |  |  |  |
Sales | $ 339,153 | $ 259,774 |  | $ 242,956 |
[1] | The amounts for 2016 have been re-presented to show the results of the Spanish energy business within profit (loss) from continuing operations, as described in Note 1 to the consolidated financial statements.

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