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Document And Entity Information	9 Months Ended
Document And Entity Information	Sep. 30, 2011	Nov. 12, 2011 Class C Convertible Preferred [Member]	Nov. 12, 2011 General Partner [Member]	Nov. 12, 2011 Limited Partners - Affiliated Subordinated [Member]	Nov. 12, 2011 Limited Partners - Common [Member]
Entity Information [Line Items]
Entity Registrant Name	QR Energy, LP
Entity Central Index Key	0001502012
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		16,666,667	35,729	7,145,866	28,565,344
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2011