Cost Classifications (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Cost Classifications
Depreciation and amortization not included in direct operating expenses	$ 5.7	$ 5.4

Represents the amount of depreciation and amortization not included in direct operating expenses.

No definition available.

Name:	uan_DepreciationAndAmortizationNotIncludedInDirectOperatingExpenses
Namespace Prefix:	uan_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration