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Revenues and other income - Other income and revenues (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenues and other income      
Gains from sale of assets and businesses € 10 € 152 € 454
Other proceeds 950 1,008 662
Other revenue € 960 € 1,160 € 1,116