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Consolidated statements of changes in equity (Parenthetical) - EUR (€)
€ in Millions
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Equity € 12,023 € 13,453 € 11,725
Reserve of exchange differences on translation [Member]      
Equity [1] 392 1,234 1,058
Reserve of exchange differences on translation [Member] | Investment in associates [Member]      
Equity € 46 € 40 € 34
[1] Cumulative translation adjustments related to Investments in associates were EUR 46 million at December 31, 2017 (2016: EUR 40 million, 2015: EUR 34 million).