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Currency Gains / (Losses) | 12 Months Ended
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Dec. 31, 2018
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Currency Gains / (Losses) | NOTE 9—CURRENCY GAINS / (LOSSES) Currency gains and losses, which are included in Income from operations, are as follows:
(in millions of Euros) |  | Notes |  | Year ended December 31, 2018 |  |  | Year ended December 31, 2017 |  |  | Year ended December 31, 2016 |
Included in Revenue |  | 23 |  |  | 2 |  |  |  | 2 |  |  |  | — |
Included in Cost of sales |  |  |  |  | 2 |  |  |  | (4 | ) |  |  | 4 |
Included in Other gains / (losses)—net |  |  |  |  | 7 |  |  |  | (4 | ) |  |  | (3 | )
Total |  |  |  |  | 11 |  |  |  | (6 | ) |  |  | 1 |
Realized exchange gains / (losses) on foreign currency derivatives—net |  | 23 |  |  | 11 |  |  |  | (15 | ) |  |  | (46 | )
Unrealized (losses) / gains on foreign currency derivatives—net |  | 23 |  |  | (3 | ) |  |  | 17 |  |  |  | 40 |
Exchange gains / (losses) from the remeasurement of monetary assets and liabilities—net |  |  |  |  | 3 |  |  |  | (8 | ) |  |  | 7 |
Total |  |  |  |  | 11 |  |  |  | (6 | ) |  |  | 1 |
See NOTE 22—Financial Instruments and NOTE 23—Financial Risk Management for further information regarding the Company’s foreign currency derivatives and hedging activities. Foreign currency translation reserve
(in millions of Euros) |  | At December 31, 2018 |  |  | At December 31, 2017 |
Foreign currency translation reserve at January 1 |  |  | (7 | ) |  |  | 12 |
Effect of currency translation differences |  |  | 10 |  |  |  | (19 | )
Foreign currency translation reserve at December 31 |  |  | 3 |  |  |  | (7 | )

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