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Goodwill | 12 Months Ended
--- | ---
Dec. 31, 2014
Goodwill. |
Goodwill | Note 5. Goodwill The changes in the carrying amount of goodwill are as follows:
|  | (in millions) |
Balance at January 1, 2012 |  | $ | 1,244.3 |
Acquisitions |  |  | 68.0 |
Effect of foreign currency translation |  |  | 2.3 |
​ | ​ | ​ | ​ | ​
Balance at December 31, 2012 |  |  | 1,314.6 |
Acquisitions |  |  | 382.4 |
Effect of foreign currency translation |  |  | (5.4 | )
​ | ​ | ​ | ​ | ​
Balance at December 31, 2013 |  |  | 1,691.6 |
Acquisitions |  |  | 51.3 |
Consolidation of a joint venture entity |  |  | 15.2 |
Purchase price allocation adjustments |  |  | 2.1 |
Sale of business |  |  | (17.1 | )
Effect of foreign currency translation |  |  | (6.7 | )
​ | ​ | ​ | ​ | ​
Balance at December 31, 2014 |  | $ | 1,736.4 |
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​
We had no accumulated impairment losses related to goodwill at December 31, 2014.

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