Related Party Transactions (Details) (USD $)	3 Months Ended			3 Months Ended			1 Months Ended	3 Months Ended
	Mar. 31, 2014 Affiliate of General Partner	Mar. 31, 2013 Affiliate of General Partner	Dec. 31, 2013 Affiliate of General Partner	Mar. 31, 2014 Affiliate of General Partner Services and Offtake agreement	Mar. 31, 2014 Affiliate of General Partner Leases	Mar. 31, 2013 Affiliate of General Partner Leases	Jan. 31, 2013 Affiliate of General Partner Leases Ammonia assets item	Mar. 31, 2014 Affiliate of General Partner Leases Rail cars	Mar. 31, 2014 CF Industries Services and Offtake agreement	Mar. 31, 2013 CF Industries Services and Offtake agreement
Related party transactions
Term of agreement							5 years	1 year
Extended term of agreement				1 year			5 years	1 year
Payroll, payroll-related expenses and other employee related benefits	$ 5,600,000	$ 5,600,000
Allocated expenses									3,900,000	3,800,000
Due to affiliates, net	30,400,000		25,300,000
Base quarterly rent of leased asset							100,000
Number of options to renew lease term under amended and restated agreement							3
Quarterly rent per leased asset (in dollars per car)								3,600
Rental income received					$ 100,000	$ 100,000