Goodwill (Tables)
 3 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The changes in the carrying amount of goodwill, by reporting unit, are as follows:
 
Phosphates
 
Potash
 
International Distribution
 
Total
Balance as of December 31, 2014
$
648.4

 
$
1,158.1

 
$
—

 
$
1,806.5

Foreign currency translation
—

 
(89.1
)
 
(8.7
)
 
(97.8
)
Allocation of goodwill due to Realignment
(156.0
)
 
—

 
156.0

 
—

Adjustment to goodwill acquired in ADM acquisition
—

 
—

 
(22.0
)
 
(22.0
)
Balance as of March 31, 2015
$
492.4

 
$
1,069.0

 
$
125.3

 
$
1,686.7