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Other current assets (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Other current assets [Abstract]      
Content assets € 92 € 24  
Prepaid expenses and other 47 36  
Derivative assets 12 8  
Other current assets 151 68  
Content asset amortization € 48 € 20 € 8