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Sales - Other assets - Current and non-current (Details) - EUR (€)
€ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Revenue [abstract]        
Total € 1,383 € 1,281 € 1,204 € 1,179
o/w other non-current assets 125 129 110  
o/w other current assets € 1,258 € 1,152 € 1,094