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Goodwill
3 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill Mosaic had goodwill of $1.2 billion as of March 31, 2021 and December 31, 2020, respectively. We review goodwill for impairment annually in October and at any time events or circumstances indicate that the carrying value may not be fully
recoverable, which is based on our accounting policy and GAAP. The changes in the carrying amount of goodwill, by reporting unit, are as follows:
PotashMosaic FertilizantesCorporate, Eliminations and OtherTotal
Balance as of December 31, 2020$1,063.2 $97.7 $12.1 $1,173.0 
Foreign currency translation9.2 (2.2)— 7.0 
Balance as of March 31, 2021$1,072.4 $95.5 $12.1 $1,180.0 
We are required to perform our next annual goodwill impairment analysis as of October 31, 2021. It is possible that, during the remainder of 2021 or beyond, business conditions could deteriorate from the current state, raw material or product price projections could decline significantly from current estimates, or our common stock price could decline significantly. If projected net sales and cash flow projections are not achieved or our common stock price significantly declines from current levels, book values of certain operations could exceed their fair values, which may result in goodwill impairment charges in future periods. It is not possible at this time to determine if any such future impairment charge would result or, if it does, whether such charge would be material.