Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2011	Jun. 30, 2011	Mar. 15, 2012 Class C Convertible Preferred [Member]	Mar. 15, 2012 Limited Partners-Affiliated - Common [Member]	Mar. 15, 2012 Limited Partners-Affiliated - Subordinated [Member]	Mar. 15, 2012 General Partner [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	Accelerated Filer
Entity Public Float		$ 356,252,000
Entity Common Stock, Shares Outstanding			16,666,667	28,590,016	7,145,866	35,729
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011