v3.19.3.a.u2
Financial Risk Management and Financial Instruments - Summary of Major Security Type, Financial Assets and Liabilities that are Measured at Fair Value on Recurring Basis and Category Using Fair Value Hierarchy (Details) - EUR (€)
€ in Millions
Dec. 31, 2019
Dec. 31, 2018
Financial assets at fair value    
Total financial assets at fair value by level € 2,197 € 2,569
Financial liabilities at fair value    
Total financial liabilities at fair value by level 138 339
Contingent consideration    
Financial liabilities at fair value    
Total financial liabilities at fair value by level 27  
Derivatives (Designated for Hedging) | Foreign Exchange Forwards    
Financial liabilities at fair value    
Total financial liabilities at fair value by level 13  
Derivatives (Not Designated for Hedging) | Warrants    
Financial liabilities at fair value    
Total financial liabilities at fair value by level 98 333
Foreign Exchange Forwards | Derivatives (Designated for Hedging)    
Financial assets at fair value    
Total financial assets at fair value by level 8 6
Financial liabilities at fair value    
Total financial liabilities at fair value by level   6
Short Term Investments | Government Securities    
Financial assets at fair value    
Total financial assets at fair value by level 268 221
Short Term Investments | Agency Securities    
Financial assets at fair value    
Total financial assets at fair value by level 5 7
Short Term Investments | Corporate Notes    
Financial assets at fair value    
Total financial assets at fair value by level 263 343
Short Term Investments | Collateralized Reverse Purchase Agreements    
Financial assets at fair value    
Total financial assets at fair value by level 156 344
Long Term Investment    
Financial assets at fair value    
Total financial assets at fair value by level 1,497 1,646
Other | Derivatives (Not Designated for Hedging)    
Financial assets at fair value    
Total financial assets at fair value by level   2
Level 1    
Financial assets at fair value    
Total financial assets at fair value by level 1,710 1,794
Level 1 | Short Term Investments | Government Securities    
Financial assets at fair value    
Total financial assets at fair value by level 229 164
Level 1 | Long Term Investment    
Financial assets at fair value    
Total financial assets at fair value by level 1,481 1,630
Level 2    
Financial assets at fair value    
Total financial assets at fair value by level 471 757
Financial liabilities at fair value    
Total financial liabilities at fair value by level 13 6
Level 2 | Derivatives (Designated for Hedging) | Foreign Exchange Forwards    
Financial liabilities at fair value    
Total financial liabilities at fair value by level 13  
Level 2 | Foreign Exchange Forwards | Derivatives (Designated for Hedging)    
Financial assets at fair value    
Total financial assets at fair value by level 8 6
Financial liabilities at fair value    
Total financial liabilities at fair value by level   6
Level 2 | Short Term Investments | Government Securities    
Financial assets at fair value    
Total financial assets at fair value by level 39 57
Level 2 | Short Term Investments | Agency Securities    
Financial assets at fair value    
Total financial assets at fair value by level 5 7
Level 2 | Short Term Investments | Corporate Notes    
Financial assets at fair value    
Total financial assets at fair value by level 263 343
Level 2 | Short Term Investments | Collateralized Reverse Purchase Agreements    
Financial assets at fair value    
Total financial assets at fair value by level 156 344
Level 3    
Financial assets at fair value    
Total financial assets at fair value by level 16 18
Financial liabilities at fair value    
Total financial liabilities at fair value by level 125 333
Level 3 | Contingent consideration    
Financial liabilities at fair value    
Total financial liabilities at fair value by level 27  
Level 3 | Derivatives (Not Designated for Hedging) | Warrants    
Financial liabilities at fair value    
Total financial liabilities at fair value by level 98 333
Level 3 | Long Term Investment    
Financial assets at fair value    
Total financial assets at fair value by level € 16 16
Level 3 | Other | Derivatives (Not Designated for Hedging)    
Financial assets at fair value    
Total financial assets at fair value by level   € 2