v3.10.0.1
Financial Risk Management and Financial Instruments - Summary of Liquidity Position in Terms of Available Cash and Cash Equivalents and Short Term Investments (Details) - EUR (€)
€ in Millions
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of Liquidity Risk [Line Items]    
Short term investments € 915 € 1,032
Liquidity Position    
Disclosure Of Liquidity Risk [Line Items]    
Short term investments 915 1,032
Short term deposits 307 122
Cash at bank and on hand 584 355
Total surplus liquidity 1,806 1,509
Liquidity position € 1,806 € 1,509