Financial Risk Management and Financial Instruments - Summary of Changes in Contingent Consideration Liability (Details) - Contingent consideration € in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2019
EUR (€)
| |
| Disclosure Of Financial Instruments [Line Items] | |
| Initial recognition of contingent consideration included in purchase consideration of acquisition | € 13 |
| Non cash changes recognized in profit or loss | |
| Changes in fair value | 14 |
| At December 31 | € 27 |