v2.4.1.9
Commitments and Contingencies (Details 2) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Environmental Health and Safety Matters    
Long-term commitments    
Expenses related to environmental, health and safety (EHS) matters $ 200,000us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= uan_EnvironmentalHealthAndSafetyMattersMember
$ 57,000us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= uan_EnvironmentalHealthAndSafetyMattersMember
HollyFrontier Corporation    
Long-term commitments    
Expenses related to agreement 1,300,000uan_LongTermPurchaseCommitmentExpenses
/ us-gaap_TypeOfArrangementAxis
= uan_HollyFrontierCorporationMember
1,300,000uan_LongTermPurchaseCommitmentExpenses
/ us-gaap_TypeOfArrangementAxis
= uan_HollyFrontierCorporationMember
Material | Linde, Inc. | CRNF    
Long-term commitments    
Expenses related to agreement $ 800,000uan_LongTermPurchaseCommitmentExpenses
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= us-gaap_InventoriesMember
/ us-gaap_TypeOfArrangementAxis
= uan_LindeIncMember
$ 1,000,000uan_LongTermPurchaseCommitmentExpenses
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= us-gaap_InventoriesMember
/ us-gaap_TypeOfArrangementAxis
= uan_LindeIncMember