v3.10.0.1
Income Tax - Summary of Reconciliation of Net Deferred Tax (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Reconciliation Of Changes In Deferred Tax Liability Asset [Abstract]      
At January 1 € 6 € 3 € 4
Movement recognized in consolidated statement of operations 136 5 1
Movement recognized in consolidated statement of changes in equity and other comprehensive income (136) 2 (2)
Movement due to acquisition 0 (4) 0
At December 31 € 6 € 6 € 3