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Long-Term Debt - 2023 Senior Notes (Details) - Senior Notes - 9.25% Senior Secured Notes due 2023
Jun. 10, 2016
USD ($)
Sep. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Debt Instrument [Line Items]      
Stated interest rate   9.25%  
CVR Partners, LP      
Debt Instrument [Line Items]      
Debt instrument face amount $ 645,000,000    
Stated interest rate 9.25%    
Maximum fixed charge coverage ratio required to make restricted payments 1.75 1.75  
Maximum aggregated restricted payments basket permitted $ 75,000,000.0    
Debt instrument, remaining restricted payments permitted   $ 72,700,000  
Interest payable   17,600,000 $ 2,700,000
CVR Partners, LP | Level 2      
Debt Instrument [Line Items]      
Fair value of debt   $ 686,900,000