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Business Segments (Details 3) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Product |  |  |  |
Revenue from External Customer |  |  |  |
Net sales |  | $ 9,587.3 | $ 7,409.4 | $ 7,162.8
Transferred at Point in Time [Member] | Phosphate Crop Nutrients |  |  |  |
Revenue from External Customer |  |  |  |
Net sales |  | 2,956.8 | 2,266.7 | 2,369.2
Transferred at Point in Time [Member] | Potash Crop Nutrients |  |  |  |
Revenue from External Customer |  |  |  |
Net sales |  | 2,755.9 | 2,180.6 | 1,889.1
Transferred at Point in Time [Member] | Crop Nutrient Blends |  |  |  |
Revenue from External Customer |  |  |  |
Net sales |  | 1,418.9 | 1,384.2 | 1,403.1
Transferred at Point in Time [Member] | Specialty Products |  |  |  |
Revenue from External Customer |  |  |  |
Net sales | [1] | 1,844.8 | 1,319.8 | 1,266.5
Transferred at Point in Time [Member] | Phosphate Rock |  |  |  |
Revenue from External Customer |  |  |  |
Net sales |  | 53.0 | 0.0 | 0.0
Transferred at Point in Time [Member] | Other |  |  |  |
Revenue from External Customer |  |  |  |
Net sales | [2] | $ 557.9 | $ 258.1 | $ 234.9
[1] | Includes sales of MicroEssentials®, K-Mag, Aspire and animal feed ingredients.
[2] | Includes sales of industrial potash.

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