Net Income/(Loss) Per Limited Partner Unit (Narrative) (Details)	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Limited Partners-Public Common [Member]
Schedule Of Earnings Per Partner Unit [Line Items]
Ownership percentage	61.10%
Limited partners unitholders, outstanding (in units)	37,434,720	17,292,279
Limited Partners-Affiliated - Subordinated [Member]
Schedule Of Earnings Per Partner Unit [Line Items]
Limited partners unitholders, outstanding (in units)	7,145,866	7,145,866
General Partner [Member] | QRE GP [Member]
Schedule Of Earnings Per Partner Unit [Line Items]
Ownership percentage	0.10%