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Related Party Transactions (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Term
$ / Car
Jun. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Related party transactions          
Document Period End Date     Jun. 30, 2017    
Affiliate of General Partner          
Related party transactions          
Payroll, payroll-related expenses and other employee related benefits $ 6,800,000 $ 6,900,000 $ 13,800,000 $ 14,100,000  
Due From (To) Affiliates, Net 9,900,000   $ 9,900,000   $ (100,000)
Services and Offtake Agreement | Affiliate of General Partner          
Related party transactions          
Extended term of agreement     1 year    
Services and Offtake Agreement | CF Industries          
Related party transactions          
Allocated expenses 4,000,000 3,900,000 $ 7,900,000 7,800,000  
Lease Agreements | Affiliate of General Partner          
Related party transactions          
Rental income received $ 200,000 $ 300,000 $ 200,000 $ 300,000  
Lease Agreements | Affiliate of General Partner | Ammonia assets          
Related party transactions          
Term of agreement     5 years    
Related Party Transaction Number of Extensions Possible in Agreement Term | Term     3    
Base quarterly rent of leased asset     $ 100,000    
Lease Agreements | Affiliate of General Partner | Rail cars          
Related party transactions          
Extended term of agreement     1 year    
Term of agreement     1 year    
Quarterly rent per leased asset (in dollars per car) | $ / Car     3,600