Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Jun. 28, 2013	Mar. 02, 2014 Class B Units [Member]	Mar. 02, 2014 Class C Convertible Preferred [Member]	Mar. 02, 2014 Limited Partners - Public And Affiliated Common Units [Member]
Entity Information [Line Items]
Entity Registrant Name	QR Energy, LP
Entity Central Index Key	0001502012
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	qre
Document Type	10-K
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Document Period End Date	Dec. 31, 2013
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding			6,133,558	16,666,667	58,629,353
Entity Public Float		$ 902,773,769