Contingencies and Commitments (Tables)

9 Months Ended

Sep. 30, 2012

Text Block [Abstract]

Schedule Of Aggregate Undiscounted Commitments On Gathering, Processing And Transportation Agreements

The aggregate undiscounted commitments under our gathering, processing and transportation agreements, excluding any reimbursement from working interest and royalty interest owners, are presented below.

	September 30, 2012
	($ in millions)
2012	$	282
2013	1,194
2014	1,535
2015	1,626
2016	1,683
2017 - 2099	11,235
Total	$	17,555