Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Schedule of Segment's Revenue

Below are the third-party customers that accounted for more than 10% of our segment’s revenues:

	2013		2012		2011
Oil and Natural Gas:
Valero Energy Corporation	25	%	26	%	18	%
Sunoco Partners Marketing	8	%	8	%	10	%
Drilling:
QEP Resources, Inc.	18	%	15	%	22	%
Kodiak Oil and Gas Corp.	10	%	10	%	6	%
Mid-Stream:
ONEOK, Inc.	50	%	54	%	54	%
Tenaska Resources, LLC	16	%	7	%	1	%
Gavilon, LLC	—	%	10	%	19	%

Schedule Of Fair Values Of The Net Assets (Liabilities)

At December 31, 2013, the fair values of the net assets (liabilities) we had with each of the counterparties with respect to all of our commodity derivative transactions are listed in the table below:

	December 31, 2013
	(In millions)
Canadian Imperial Bank of Commerce	$	0.5
Scotiabank	(0.3		)
Bank of Montreal	(5.2		)
Total assets (liabilities)	$	(5.0	)