Related Party Transactions (Schedule Of Other Contributions To Partners' Capital) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Feb. 28, 2011
Related Party Transaction [Line Items]
Fair value of interest rate derivative novated to us from Fund			$ 2,600,000
Other contributions from affiliates	38,076,000		37,545,000
Debt coverd by interest rate swap					225,000,000
Fund [Member]
Related Party Transaction [Line Items]
Noncash general and administrative expense contributed by affiliates	31,591,000	[1]	17,364,000	[1]
Fair value of interest rate derivative novated to us from Fund			2,600,000	[2]
Prepaid insurance incurred by affiliate			224,000	[3]
Predecessor [Member]
Related Party Transaction [Line Items]
Noncash general and administrative expense contributed by affiliates	$ 6,485,000	[4]	$ 17,357,000	[4]

[1] Represents our share of allocable general and administrative expenses incurred by QRM on our behalf, but not reimbursable by us

[2] On February 28, 2011, the Fund novated to us fixed-for-floating interest rate swaps covering $225.0 million of borrowings under our revolving credit facility. The Fund also novated to us on July 1, 2011 natural gas basis swaps with contract dates until 2015. The fair value of these derivative instruments was a net asset position

[3] QRM also incurred prepaid insurance on our behalf, but not reimbursable by us

[4] Represents our share of allocable general and administrative expenses incurred by QRM on our behalf, but not reimbursable by us for the December 2012 Transferred Properties for the years ended December 31, 2012 and 2011 and for the October 2011 Transferred Properties for the period from January 1 to September 30, 2011