Movements in goodwill comprise:
| (€ million) | Goodwill | |||
| Balance at January 1, 2015 | 39,197 | |||
| Reclassification of the Animal Health business(a) | (1,510) | |||
| Currency translation differences | 1,870 | |||
| Balance at December 31, 2015 | 39,557 | |||
| Acquisitions during the period | 5 | |||
| Currency translation differences | 725 | |||
| Balance at December 31, 2016 | 40,287 | |||
| Acquisitions during the period | 2,347 | |||
| Other movements during the period | 12 | |||
| Currency translation differences | (2,382) | |||
| Balance at December 31, 2017 | 40,264 | |||
| (a) |
Comprises the goodwill on the Animal Health business, presented within Assets held for sale or exchange as of December 31, 2016 and 2015. |