Goodwill and Intangible Assets, Net (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization expense $ 4.1 $ 1.0  
Goodwill [Line Items]      
Goodwill 417.2   $ 412.2
Plant Nutrition, North America [Member]      
Goodwill [Line Items]      
Goodwill 53.9   53.6
Plant Nutrition South America [Member]      
Goodwill [Line Items]      
Goodwill $ 357.5   $ 352.8