v2.4.1.9
Related Party Transactions (Details 4) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Related Party Transaction [Line Items]      
Personnel accruals, with affiliates $ 1,205,000uan_PersonnelAccrualsWithAffiliates   $ 1,129,000uan_PersonnelAccrualsWithAffiliates
Limited Partnership Agreement      
Related Party Transaction [Line Items]      
Personnel costs 1,100,000us-gaap_LaborAndRelatedExpense
/ us-gaap_EnergyAxis
= uan_LimitedPartnershipAgreementMember
400,000us-gaap_LaborAndRelatedExpense
/ us-gaap_EnergyAxis
= uan_LimitedPartnershipAgreementMember
 
Personnel Accruals and Accounts Payable | Limited Partnership Agreement      
Related Party Transaction [Line Items]      
Personnel accruals, with affiliates $ 1,200,000uan_PersonnelAccrualsWithAffiliates
/ us-gaap_BalanceSheetLocationAxis
= uan_PersonnelAccrualsandAccountsPayableMember
/ us-gaap_EnergyAxis
= uan_LimitedPartnershipAgreementMember
  $ 1,100,000uan_PersonnelAccrualsWithAffiliates
/ us-gaap_BalanceSheetLocationAxis
= uan_PersonnelAccrualsandAccountsPayableMember
/ us-gaap_EnergyAxis
= uan_LimitedPartnershipAgreementMember