Concentration Risk (Tables)

12 Months Ended

Dec. 31, 2013

Risks and Uncertainties [Abstract]

Schedule Of Revenues And Cost Of Sales By Major Customer And Supplier

The following table provides information about the extent of reliance on major customers and gas suppliers. Total revenues and cost of sales from transactions with an external customer or supplier amounting to 10% or more of revenue or cost of gas and liquids are disclosed below, together with the identity of the reporting segment.

		Years Ended December 31,
	Reportable Segment	2013		2012		2011
Customer
Customer A	Gathering and Processing	$	381	$	367	$	366
Customer B	Gathering and Processing	362		451		—
Supplier
Supplier A	Gathering and Processing	164		171		133
Supplier B	Gathering and Processing	185		—		—