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Goodwill | 6 Months Ended
--- | ---
Jun. 30, 2013
Goodwill. |
Goodwill | 4. Goodwill The change in the carrying amount of goodwill for the six months ended June 30, 2013 is as follows:
|  |  | (in millions) |
Balance as of December 31, 2012 |  |  | $ | 1,314.6 |
Acquisition |  |  | 349.1 |
Effect of foreign currency translation |  |  | (4.9 | )
Balance as of June 30, 2013 |  |  | $ | 1,658.8 |
We had no accumulated impairment losses related to goodwill as of June 30, 2013.

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- Details
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- Definition The entire disclosure for goodwill. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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