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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2018
Goodwill [Line Items] |
Sensitivity Analysis WACC [Table Text Block] | Assuming that all other components of our fair value estimate remain unchanged, a change in the WACC would have the following effect on estimated fair values in excess of carrying values:
|  |  |  | Sensitivity Analysis - Percent of Fair Values in Excess of Carrying Values
|  | Excess at Current WACC |  | WACC Decreased by 50 Basis Points |  | WACC Decreased by 25 Basis Points |  | WACC Increased by 25 Basis Points |  | WACC Increased by 50 Basis Points
Potash Reporting Unit |  | 18.0% |  | 24.5% |  | 21.3% |  | 14.7% |  | 11.3%
Goodwill | The changes in the carrying amount of goodwill, by reporting unit, as of December 31, 2018 and 2017, are as follows:
(in millions) | Phosphates |  | Potash |  | Mosaic Fertilizantes |  | Corporate, Eliminations and Other | Total
Balance as of December 31, 2016 | $ | 492.4 |  |  | $ | 1,013.6 |  |  | $ | 124.9 |  |  | $ | — |  | $ | 1,630.9 |
Foreign currency translation | — |  |  | 63.3 |  |  | (0.6 | ) |  | — |  | 62.7 |
Balance as of December 31, 2017 | 492.4 |  |  | 1,076.9 |  |  | 124.3 |  |  | — |  | 1,693.6 |
Foreign currency translation | — |  |  | (76.5 | ) |  | (5.8 | ) |  | — |  | (82.3 | )
Allocation of goodwill due to Realignment | — |  |  | — |  |  | (12.1 | ) |  | 12.1 |  | — |
Goodwill acquired in the Vale acquisition | 96.2 |  |  | — |  |  | — |  |  | — |  | 96.2 |
Balance as of December 31, 2018 | $ | 588.6 |  |  | $ | 1,000.4 |  |  | $ | 106.4 |  |  | $ | 12.1 |  | $ | 1,707.5 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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