Related Party Transactions - Railcar Lease Agreements (Details) - CVR Partners, LP - American Railcar Leasing, LLC - railcar	3 Months Ended
Sep. 30, 2016	Jun. 30, 2016
Related Party Transaction [Line Items]
Number of railcars to be leased		115
Term of lease agreement		7 years
Number of railcars leased	80

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